ICHEP 2016 Chicago

US/Central
Chicago IL USA

Chicago IL USA

Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
Young-Kee Kim (University of Chicago (US))
Description

The U.S. particle physics community is proud to host the 38th ICHEP in Chicago from the 3rd to the 10th August 2016. ICHEP is a focal point of the field of particle physics, bringing together experimentalists and theorists of the world. It was first held in 1950, and is biennial since 1960.

Dates: from 3 August 2016 17:00 to 10 August 2016 17:50
Timezone: US/Central
Location:

Sheraton Grand Chicago
Map

Address: 301 East North Water Street
Chicago IL 60611
USA
Webcast
There is a live webcast for this event
    • 16:00 19:00
      Registration Registration Desk

      Registration Desk

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
    • 07:00 09:00
      Registration: Registration desk will be open until 6pm
    • 09:00 11:00
      Accelerator: Physics, Performance, R&D and Future Facilities: 1 Superior B

      Superior B

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Convener: Eugene Levichev
      • 09:00
        Status of the CEPC Project, accelerator, detector and physics (15' + 5') 20m
        Being the next generation of circular collider, the CEPC project will be installed in a tunnel of at least 54 km circumference. Using electron-positron collisions, the CEPC project provides high precision measurements for Higgs physics and electroweak physics. The CEPC could be upgraded to SPPC, which can explore the physics landscape at o(100) TeV proton collisions. Other collision operations, such as e-p and heavy ion collisions, is also under discussion. This talk covers the accelerator baseline design, R&D progress of Detector and the exploration of Physics potential with simulation at CEPC.
        Speaker: Jie GAO (IHEP)
      • 09:20
        Review of interaction regions for future crab waist colliders. (15' + 5') 20m
        Invention of the crab waist collision scheme gave birth to several projects of future colliders with luminosity by one or two orders of magnitude higher than in previous particle factories. The biggest influence in luminosity gain comes from extremely small vertical beta function, which enhances nonlinear chromaticity of the interaction region lattice. Therefore, all the projects have to compensate it. We will review three projects for completely different energies of the future colliders with crab waist collision scheme: FCC-ee (CERN), tau-charm (Novosibirsk) and super-phi (Novosibirsk), explain the common problems of the interaction region nonlinear properties and solutions we used to control them.
        Speaker: Dr Anton Bogomyagkov (Budker Institute of Nuclear Physics (RU))
      • 09:40
        Beam Optics for FCC-ee Collider Ring (15' + 5') 20m
        Design of beam optics will be presented for the FCC-ee double-ring collider. The main characteristics are 45 to 175 GeV beam energy, 100 km circumference with two IPs/ring, 30 mrad crossing angle at the IP, crab-waist scheme with local chromaticity correction system, and "tapering" of the magnets along with the local beam energy. An asymmetric layout near the interaction region suppresses the critical energy of synchrotron radiation toward the detector at the IP less than 100 keV, while keeping the geometry as close as to the FCC-hh beam line. A sufficient transverse/longitudinal dynamic aperture is obtained for beta* = (0.5 m, 1 mm) to assure the lifetime with beamstrahlung and top-up injection. The synchrotron radiation in all magnets, the IP solenoid and its compensation, nonlinearity of the final quadrupoles are taken into account.
        Speaker: Katsunobu Oide (High Energy Accelerator Research Organization (JP))
      • 10:00
        Research program on the cryogenic beam-vacuum of the FCC-hh (15' + 5') 20m
        The FCC-hh is an accelerator with unique vacuum issues. Naively it could be thought of as a beefed-up LHC, but a careful scrutiny of its technical specifications immediately shows that it presents distinctive features which are nowhere to be found in the present LHC or even in its funded upgrade, HiLumi-LHC. Its peculiarity stems from the fact that FCC-hh is characterized by extremely high synchrotron radiation (SR) power density and photon flux while at the same time technology- and cost-wide issues call for a smaller cold-bore diameter with respect to the present 8.3 tesla dipoles of the LHC. Another important constraint for the design of the beam screen (BS) comes from the need to remove the SR power at a temperature as high as allowed by vacuum considerations in order to minimize the capital and operational costs of the cryogenic cooling system. The design of the BS in the arcs is presently the subject of a EuroCirCol work package 4 (*) collaboration between 6 different research centers, aiming at developing and testing a conceptual BS suitable for installation in the 16 tesla FCC-hh dipoles. This paper highlights the current status of the analysis of the performances of the BS, via coupled montecarlo simulations for SR and molecular flow, and coupled electromagnetic-thermo-mechanical calculations as well. The latter take into account the powerful forces generated during a simulated dipole quench, and the complex SR heat transfer across the novel BS geometry. In parallel, the collaboration is designing a test-stand for installation of a prototype BS at the 2.5 GeV light source ANKA, where the SR spectrum of the FCC-hh can be reproduced quite accurately. The currents status of the design of the test bench and its main goals will also be briefly highlighted. These activities are mainly carried out at CERN, while studies covering electron-cloud mitigation measures, involving other participating EuroCirCol WP4 collaboration institutions, are also briefly highlighted. (*)This project has received funding from the European Union's Horizon 2020 research and innovation programme (EuroCirCol)
        Speaker: Roberto Kersevan (CERN)
      • 10:20
        The CERN High Field Magnet Program (15' + 5') 20m
        High Field Magnets is one of the priority R&D clearly identified in the Update of the European Strategy for Particle Physics, as well as the HEPAP Accelerator R&D Subpanel. CERN, together with several collaborating institutes in the Member States, is responding with a broadly structured and progressive approach to increasing field levels. The activities in the domain of high field accelerator magnets cover technology, demonstration and engineering developments, embracing construction projects such as HL-LHC, and design studies such as the FCC, but also beyond. This presentation covers the rationale of the program, by putting it in the context of previous developments, and lists the main milestones in the path that we traced to drawing the maximum performance from LTS materials, and exploring the potential of HTS materials.
        Speaker: Paolo Fessia (CERN)
      • 10:40
        Landscape of Future Accelerators at the Energy and Intensity Frontier (15' + 5') 20m
        This talk will provide an overview of the currently envisaged landscape of charge particle accelerators at the energy and intensity frontiers to explore particle physics beyond the standard model via 1-100 TeV-scale lepton and hadron colliders and multi-Megawatt proton accelerators for short- and long-baseline neutrino experiments. The particle beam physics, associated technological challenges and progress to date for these accelerator facilities (LHC, HL-LHC, future 100 TeV p-p colliders, Tev-scale linear and circular electron-positron colliders, high intensity proton accelerator complex PIP-II for DUNE and future upgrade to PIP-III) will be outlined. Potential and prospects for advanced “plasma-wakefield-based techniques” at the TeV-scale energy frontier and advanced “nonlinear dynamic techniques” at multi-MW level intensity frontier will be touched upon.
        Speaker: Prof. Michael Syphers (Northern Illinois University)
    • 09:00 11:00
      Astro-particle Physics and Cosmology: AMS/Holometer Chicago 10

      Chicago 10

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Convener: Kirsten Anne Tollefson (Michigan State University (US))
      • 09:00
        Precision Measurement of the (e$^{+}$+e$^{−}$) Flux in Primary Cosmic Rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station (12' + 3') 15m
        We present a measurement of the cosmic ray (e$^{+}$+e$^{−}$) flux in the range 0.5 GeV to 1 TeV based on the analysis of 10.6 million (e$^{+}$+e$^{−}$) events collected by AMS. The statistics and the resolution of AMS provide a precision measurement of the flux. The flux is smooth and reveals new and distinct information. AMS measurements of individual e$^{+}$ and e$^{−}$ fluxes show neither e$^{+}$ nor e$^{−}$ can be described by a single power law above 27.2 and 52.3 GeV, respectively. Surprisingly, above 30.2 GeV, the combined (e$^{+}$+e$^{−}$) flux can be described accurately by a single power law with a spectral index γ=-3.170 ± 0.008(stat+syst) ± 0.008(energy scale).
        Speaker: Valerio Vagelli (Universita e INFN, Perugia (IT))
      • 09:15
        Precision measurement of the antiproton-to-proton ratio by the Alpha Magnetic Spectrometer on the International Space Station (12' + 3') 15m
        A precision measurement, with the Alpha Magnetic Spectrometer, of the antiproton-to-proton ratio in the primary cosmic rays is presented. The measurement is made in the rigidity range from 1 to 450 GV and is based on 300,000 antiproton events. The measurement increases the precision and significantly extends the high rigidity range beyond previous observations.
        Speaker: Andrew Chen (Massachusetts Institute of Technology)
      • 09:30
        Precision Measurement of Boron-to-Carbon and Carbon-to-Helium flux ratio in Cosmic Rays from 2 GV to 2 TV with the Alpha Magnetic Spectrometer on the International Space Station. (12' + 3') 15m
        AMS-02 is wide acceptance high-energy physics experiment installed on the International Space Station in May 2011 and operating continuously since then. AMS-02 is able to precisely separate cosmic rays light nuclei ($1\leq Z \leq 8$) with contaminations less than $10^{-3}$. The light nuclei cosmic ray Boron to Carbon flux ratio is a very well known sensitive observable for the understanding of the propagation of cosmic rays in the Galaxy, being Boron a secondary product of spallation on the interstellar medium of heavier primary elements such as Carbon and Oxygen. The ratio of the two primary species such as Carbon and Helium is also important for understanding charge dependencies of the production, acceleration and propagation mechanisms of cosmic rays in our galaxy. The status of the measurement of the boron-to-carbon and carbon-to-helium based on 10 millions Boron and Carbon and 50 million Helium events is presented.
        Speaker: Alberto Oliva (Centro de Investigaciones Energ. Medioambientales y Tecn. - (ES)
      • 09:45
        Search for Space-Time Correlations from the Planck Scale with the Fermilab Holometer (15' + 5') 20m
        Measurements are reported of high frequency cross-spectra of signals from the Fermilab Holometer, a pair of co-located 39 m, high power Michelson interferometers. The instrument obtains differential position sensitivity to cross-correlated signals far exceeding any previous measurement in a broad frequency band extending to the 3.8 MHz inverse light crossing time of the apparatus. General experimental constraints are placed on parameters of a set of models of universal exotic spatial shear correlations, with a sensitivity that exceeds the Planck scale holographic information bound of space-time position states by a significant factor. Current status and future plans are discussed.
        Speaker: Dr Chris Stoughton (Fermilab)
      • 10:05
        Exotic Rotational Correlations from Quantum Geometry (15' + 5') 20m
        Planck scale quantum geometry can lead to exotic correlations in displacements of bodies and phases of fields that grow with scale, in the same way as standard quantum correlations in extended systems. Such correlations resolve some of the well known conflicts of standard field theory with gravity on large scales. Even without a theory of quantum gravity, basic quantum principles suffice to predict the effect of exotic rotational correlations in the signal of an interferometer. The prediction can be tested with a reconfiguration of an existing instrument, the Fermilab Holometer. Entanglement of these correlations with the Standard Model vacuum might explain the origin of the cosmological constant.
        Speaker: Prof. Craig Hogan (Fermilab and University of Chicago)
      • 10:25
        Sterile neutrino dark matter and the 3.5 keV line (15' + 5') 20m
        The cold dark matter (CDM) paradigm has been extremely successful in explaining the large-scale structure of the Universe. However, it continues to face issues when confronted by observations on sub-Galactic scales. We first summarize the small-scale issues surrounding CDM and discuss the solutions explored by modern state-of-the-art numerical simulations including treatment of baryonic physics. We identify the `too-big-to-fail' in field galaxies as among the best targets to study modifications to CDM, and discuss the particular solution of keV sterile neutrino warm dark matter. Furthermore, we discuss how the claimed anomalous 3.5 keV X-ray lines, when interpreted as sterile neutrino dark matter decay, provide a very good description of small-scale observations of the Local Group.
        Speaker: Shunsaku Horiuchi (Virginia Tech)
      • 10:45
        Hints of new physics from stars (12' + 3') 15m
        Several stellar systems show a preference for a mild non-standard cooling mechanism when compared with theoretical models. Taken individually, these excesses do not show a strong statistical weight. However, together they seem to indicate a systematic problem with our understanding of stellar evolution and, perhaps, a hint to new physics. Indeed, the exotic cooling could be provided by new Weakly Interacting Slim Particles (WISPs), produced in the hot cores and contributing directly to the energy loss. I will present an overview of the most recent observations and of the available solutions. I will show that Axion-Like Particles (ALPs) represent the best option for this problem. Interestingly, the hinted ALP parameter space is accessible to the next generation proposed ALP searches, such as ALPS II and especially the International Axion Observatory (IAXO).
        Speaker: Maurizio Giannotti (Barry University)
    • 09:00 11:00
      Beyond the Standard Model: 1 Chicago 7

      Chicago 7

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Conveners: Bruce Mellado Garcia (University of the Witwatersrand), Seema Sharma (Indian Institute of Science Education and Research (IN))
      • 09:00
        Search for supersymmetry with jets and missing transverse momentum in pp collisions at 13 TeV with CMS (15' + 5') 20m

        A search for new physics is performed based on multijet events with large missing transverse momentum produced in 13 TeV proton-proton collisions. The data sample, corresponding to an integrated luminosity of 2.2 fb-1, was collected with the CMS detector at Run 2 of the CERN LHC. The data are examined in search regions of jet multiplicity, bottom-quark jet multiplicity, missing transverse momentum, and the scalar sum of jet transverse momenta. Exclusion limits are presented for simplified supersymmetric models of gluino pair production.These results significantly extend the limits from LHC Run 1.

        Speaker: Francesco Pandolfi (ETH Zürich)
      • 09:20
        Inclusive searches for squarks and gluinos in fully hadronic final states with the ATLAS detector (15' + 5') 20m
        Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. The recent increase in the center of mass energy of the proton-proton collisions gives a unique opportunity to extend the sensitivity to production of supersymmetric particles at the Large Hadron Collider. This talk summarises recent ATLAS results on inclusive searches for promptly decaying supersymmetric squarks and gluinos in events containing jets, missing transverse momentum and no light lepton.
        Speaker: David Miller (University of Chicago (US))
      • 09:40
        Search for supersymmetry in events with one lepton, jets and missing transverse momentum in pp collisions at 13 TeV with CMS (15' + 5') 20m

        Results are reported from a search for supersymmetric particles in pp collisions in the final state with a single, high pT lepton; multiple jets, including at least one btagged jet; and large missing transverse momentum. The data sample corresponds to 2.1 fb-1 recorded by the CMS experiment at ps = 13 TeV. The search focuses on processes leading to high jet multiplicities, such as gluino pair production with the gluino decaying to top quarks. The quantity MJ, defined as the sum of the masses of the large-radius jets in the event, is used in conjunction with other kinematic variables to provide discrimination between signal and backgrounds and as a key part of the background estimation method. Competitive exclusion limits are obtained.

        Speaker: Artur Apresyan (California Institute of Technology (US))
      • 10:00
        Inclusive searches for squarks and gluinos in lepton channels with the ATLAS detector (15' + 5') 20m
        Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. The recent increase in the center of mass energy of the proton-proton collisions gives a unique opportunity to extend the sensitivity to production of supersymmetric particles at the Large Hadron Collider. This talk summarises recent ATLAS results on inclusive searches for promptly decaying supersymmetric squarks and gluinos in events containing jets, missing transverse momentum and electrons or muons.
        Speaker: Lucian Stefan Ancu (Universite de Geneve (CH))
      • 10:20
        Search for supersymmetry in events with two or more leptons in pp collisions at 13 TeV with CMS (15' + 5') 20m

        We present a search for new physics in events with one or two low-momentum leptons and missing transverse energy, based on the first proton-proton integrated luminosity recorded with the CMS detector at 13 TeV. The final state can be the phenomenology of SUSY models foreseeing a small mass splitting between the lightest supersymmetric particle and e.g. the top squark or chargino, in the so called compressed mass spectra scenario. The event selection and kinematics, together with methods for estimating the standard model backgrounds are presented. Results are interpreted in terms on SUSY models where a compressed mass scenario is foreseen.

        Speaker: Marc Dunser (CERN)
      • 10:40
        Searches for electroweak production of supersymmetric gauginos and sleptons with the ATLAS detector (15' + 5') 20m
        Many supersymmetry models feature gauginos and also sleptons with masses less than a few hundred GeV. These can give rise to observables direct pair production rates at the LHC. The talk presents results from searches for gaugino and slepton pair production in final states with leptons, including prospects for very high integrated luminosities.
        Speaker: Dongliang Zhang (University of Michigan (US))
    • 09:00 11:00
      Detector: R&D and Performance: Overview Chicago 8

      Chicago 8

      Convener: Ingrid-Maria Gregor (DESY)
      • 09:00
        The SiD Detector for the International Linear Collider (15' + 5') 20m
        The SiD Detector for the future International Linear Collider will deliver superb performance for high precision Higgs and Top measurements, and will have excellent sensitivity to a wide range of possible new phenomena. SiD features a compact, cost-constrained design, with a robust silicon vertex and tracking system, which, combined with a 5 Tesla central solenoidal field, provides excellent momentum resolution. The highly granular calorimeter system is optimized for Particle Flow application to achieve very good jet energy resolution over a wide range of energies. Details of the proposed implementation of the SiD subsystems, as driven by the physics requirements, together with recent changes to the overall design and assembly procedures, will be given. Integration with the accelerator, the push-pull mechanism, and the assembly logistics at the Kitakami site will be described, with an estimated timeline for construction in relation to the overall ILC Project.
        Speaker: Andrew White (University of Texas at Arlington)
      • 09:20
        ATLAS Upgrades for the next Decades (15' + 5') 20m
        fter the successful operation at the center-of-mass energies of 7 and 8 TeV in 2010 - 2012, the LHC is ramped up and successfully took data at the center-of-mass energies of 13 TeV in 2015. Meanwhile, plans are actively advancing for a series of upgrades of the accelerator, culminating roughly ten years from now in the high-luminosity LHC (HL-LHC) project, delivering of the order of five times the LHC nominal instantaneous luminosity along with luminosity leveling. The ultimate goal is to extend the dataset from about few hundred fb−1 expected for LHC running to 3000 fb−1 by around 2035 for ATLAS and CMS. In parallel, the experiments need to be keep lockstep with the accelerator to accommodate running beyond the nominal luminosity this decade. Along with maintenance and consolidation of the detector in the past few years, ATLAS has added inner b-layer to its tracking system. The challenge of coping with the HL-LHC instantaneous and integrated luminosity, along with the associated radiation levels, requires further major changes to the ATLAS detector. The designs are developing rapidly for a new all-silicon tracker, significant upgrades of the calorimeter and muon systems, as well as improved triggers and data acquisition. ATLAS is also examining potential benefits of extensions to larger pseudorapidity, particularly in tracking and muon systems. This report summarizes various improvements to the ATLAS detector required to cope with the anticipated evolution of the LHC luminosity during this decade and the next.
        Speaker: Guido Volpi (Universita di Pisa & INFN (IT))
      • 09:40
        Detector Systems for the Muon g-2 Experiment (15' + 5') 20m
        The Muon g-2 Experiment at Fermilab will collect more than 20 times the data obtained in the BNL E821 measurement of the muon’s anomalous magnetic moment. Because $g \neq 2$, the spin of a muon confined in a magnetic storage ring precesses slightly faster than the cyclotron frequency; the difference between these frequencies is proportional to the magnetic moment anomaly. The signature of this difference is a modulation in the decay rate of muons to higher-energy positrons, which we measure using 24 electromagnetic calorimeters positioned uniformly around the inside of the ring. The larger data set compared to BNL will be obtained by employing a higher muon fill rate frequency, a longer running period, and higher muon storage intensity per fill. Each of these issues has implications in the instrumentation design, but none more challenging than handling the anticipated higher instantaneous rates and potential systematic uncertainties related to pileup and gain (energy) instability. We have developed an ultra-fast, segmented Cherenkov crystal calorimeter read out by silicon photomultipliers (SiPMs), which are insensitive to the magnetic field environment. The SiPM signals are continuously digitized at 800 MSPS at depth of 12 bits. The SiPM pulse widths are less than 8 ns, and two-pulse separation resolution has been demonstrated down to a few ns. Complementing this system is a series of in-vacuum straw chamber planes positioned in front of three calorimeters. The straw system allows both accurate determination of the important muon storage parameters that are critical for systematic error corrections {\e em and} sensitivity to a muon EDM signal that would manifest itself as an up/down modulation in the average slope of decay positrons at the $g-2$ precession frequency, but out of phase with it by $\pi/2$. This talk will emphasize the key developments in these systems and why they will lead to a robust measurement.
        Speaker: Jarek Kaspar (University of Washington)
      • 10:00
        Simulations for energy frontier (15' + 5') 20m
        Monte Carlo (MC) event samples with simulation of detector response are an essential part of the strategic planning for future energy-frontier experiments, such as High-Luminosity LHC, ILC (International Linear Collider), FCC (Future Circular Collider), CEPC (Circular Electron Positron Collider), SPPC (Super Proton-Proton Collider) and other future particle collider proposals. This talk describes a project, called HepSim, that focuses on Monte Carlo samples created using large-scale computing facilities such as High-performance computing (HPC) and the Open Science grid (OSG). HepSim provides software tools and publicly accessible Monte Carlo event samples including fast and full detector simulations, to be used for physics and performance studies by the HEP community. A few examples relevant to specific physics cases will be illustrated.
        Speaker: Sergei Chekanov (Argonne National Laboratory (US))
      • 10:20
        Status of the CEPC Project: Accelerator, Detector and Physics (15' + 5') 20m
        The high energy Circular Electron-Positron Collider (CEPC) is envisioned to be installed in a tunnel of at least 54 km in circumference. The CEPC physics program includes high precision measurements of the Higgs boson and the study of the electroweak physics. The CEPC may be upgraded to a Super proton-proton Collider (SppC), which can explore the physics landscape at o(100) TeV in proton-proton collisions. Other collision operations, such as e-p and heavy ion collisions, are also under discussion. This talk covers the accelerator baseline design, the detector R&D progress and the physics potentials of the CEPC project.
        Speaker: Jie GAO (IHEP)
      • 10:40
        Study Of Boosted W-Jets And Higgs-Jets With the SiFCCDetector (15' + 5') 20m

        We study detector performance of Higgs boson identification variables at very high energy proton colliders. We study Higgs bosons decaying to bottom quarks with transverse momentum in the multi-TeV range. Detectors are benchmarked in various configurations in order to understand the impact of granularity and resolution on boosted Higgs boson discrimination.

        Speaker: Shin-Shan Yu (National Central University (TW))
    • 09:00 11:00
      Higgs Physics: 1 Chicago 9

      Chicago 9

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Conveners: Kirill Prokofiev (The Hong Kong University of Science and Technology (HK)), Stefania Gori (Perimeter Institute/Cincinnati University)
      • 09:00
        Determination of the total LHC Higgs boson Cross Section (15' + 5') 20m
        In this talk I will present the most precise theoretical determination of the total Higgs boson Cross Section at the LHC known to this date. This new determination was made possible only through the first complete calculation of an LHC observable at N3LO in perturbative QCD. I will discuss the impact of the N3LO correction on the total cross section and examine remaining sources of theoretical uncertainties, such as limited knowledge of physical parameters, parton densities and yet unknown higher order corrections.
        Speaker: Dr Franz Herzog (Nikhef)
      • 09:20
        Measurement of cross sections and couplings of the SM Higgs boson in the diphoton decay channel using the ATLAS detector (12' + 3') 15m
        The latest results on the measurement of the cross sections and couplings of the Higgs boson in the diphoton decay channel with the ATLAS detector are presented, using approximately 10 fb-1 of pp collision data collected at 13 TeV.
        Speaker: Andrew Pilkington (University Of Manchester)
      • 09:35
        Measurements of Higgs boson production and properties in the di-photon decay channel using the CMS detector (12' + 3') 15m
        A summary of the CMS results in the study of the Higgs boson in decays to diphotons will be presented in this talk.
        Speaker: Vittorio Raoul Tavolaro (Eidgenoessische Tech. Hochschule Zuerich (CH))
      • 09:50
        Measurement of cross sections and couplings of the SM Higgs boson in the ZZ decay channel using the ATLAS detector (12' + 3') 15m
        The latest results on the measurement of the cross sections and couplings of the Higgs boson in the ZZ decay channel with the ATLAS detector are presented, using approximately 10 fb-1 of pp collision data collected at 13 TeV.
        Speaker: Ludovica Aperio Bella (University of Birmingham (GB))
      • 10:05
        Measurements of Higgs boson production and properties in the ZZ decay channel using the CMS detector (12' + 3') 15m
        A summary of the CMS results in the study of the Higgs boson in decays to four leptons will be presented in this talk.
        Speaker: Simon Regnard (Centre National de la Recherche Scientifique (FR))
      • 10:20
        Measurement of cross sections and couplings of the SM Higgs boson in the WW decay channel using the ATLAS detector (12' + 3') 15m
        The measurement of the cross sections and couplings of the Higgs boson in the WW decay channel with the ATLAS detector is presented, using the run-1 dataset.
        Speaker: Claudia Bertella (Johannes-Gutenberg-Universitaet Mainz (DE))
      • 10:35
        Measurements of Higgs boson production and properties in the WW decay channel using the CMS detector (12' + 3') 15m
        A summary of the CMS results in the study of the Higgs boson in decays to W pair bosons will be presented in this talk.
        Speaker: Andrea Massironi (Northeastern University (US))
    • 09:00 11:00
      Neutrino Physics: Solar/Atm/SN Chicago 6

      Chicago 6

      Convener: Hiroyuki Sekiya (University of Tokyo)
      • 09:00
        Atmospheric Neutrino Results from Super-Kamiokande (15' + 2') 17m
        The latest results from the Super-Kamiokande on the topic of atmospheric neutrino oscillation will be presented. Atmospheric neutrinos cover a wide energy range, have both electron and muon flavors, and through a 3-flavor analysis are sensitive to the neutrino mass hierarchy and CP-violating phase.
        Speaker: Mr Zepeng Li (Duke University)
      • 09:17
        Solar neutrino results from Super-Kamiokande (15' + 3') 18m
        Super-Kamiokande (SK), a 50 kton water Cherenkov detector in Japan, observes $^{8}$B solar neutrinos with neutrino-electron elastic scattering. SK searches for distortions of the solar neutrino energy spectrum caused by the edge of the MSW resonance in the core of the Sun. It also searches for a day/night solar rate asymmetry induced by the matter in the Earth. A combined analysis of the all SK spectral, day/night and absolute rate measurements as well as all solar neutrino and KamLAND data is presented. The installation of new front-end electronics in 2008 marks the beginning of the 4th phase of SK (SK-IV). With the improvement of the water circulation system, calibration methods, reduction cuts, this phase achieved the lowest energy threshold thus far (~3.5 MeV kinetic energy). SK observed solar neutrinos for about 18 years, that is more than 5,000 days. This long operation covers about 1.5 solar activity cycles. An analysis about a possible correlation between solar neutrino flux and 11 year activity cycle will be presented.
        Speaker: Yuuki Nakano (Kamioka Observatory)
      • 09:35
        Recent results from Borexino (25' + 5') 30m
        The Borexino experiment is running at the “Laboratori del Gran Sasso” in Italy since 2007. Its technical distinctive feature is the unprecedented ultralow background of the inner scintillating core, which is the basis of the outstanding achievements obtained by the experiment. In this talk, after recalling the main features of the detector, the impressive solar and geoneutrino results accumulated so far by Borexino will be summarized, with special emphasis to the most recent and prominent results. Specifically, these are on one hand the measure of the fundamental pp solar neutrino flux, which is the direct probe of the engine mechanism powering our star, and on the other the detection of the geo-neutrino signal with a significance as high as 5.9 sigma. The pp milestone measurement puts Borexino in the unique situation of being the only experiment able to do solar neutrino spectroscopy over the entire solar spectrum; the counterpart of this peculiar status in the oscillation interpretation of the data is the capability of Borexino alone to perform the full validation across the solar energy range of the MSW-LMA paradigm. The implications of the geoneutrino data in term of capability to investigate important geophysical properties of the interior of the Earth will be also discussed. The talk will be concluded highlighting the perspectives for the final stage of the solar program of the experiment, centered on the goal to fully complete the solar spectroscopy with the missing piece of the CNO neutrinos. If successful, such a measurement would represent the final crowning of the long quest of Borexino to unravel all the properties of the neutrinos from the Sun.
        Speaker: Davide D'Angelo (Universita' degli Studi Milano)
      • 10:05
        Neutrino decay and Solar Neutrino Seasonal effect (15' + 2') 17m
        We consider the possibility of solar neutrino decay on their propagation between production and detection. Using current oscillation data, we set a new lower bound to the $\nu_2$ neutrino lifetime at $\tau_2\, /\, m_2 \geq 7.2 \times 10^{-4}\,\,\hbox{s}\,.\,\hbox{eV}^{-1}$ at $99\%\,$C.L.. We show that in neutrino decay scenario induce an non-usual seasonal variation in the solar neutrino data.
        Speaker: Orlando L. G. Peres (UNICAMP)
      • 10:22
        $\nu_{\mu}$ Disappearance with IceCube/Deepcore (15' + 5') 20m
        Located at the South Pole Station in Antarctica, the IceCube Neutrino Observatory is the world's largest neutrino telescope. In the clearest part of the ice sits a more densely instrumented section, DeepCore, that is able to measure neutrinos from 10-60 GeV. Using DeepCore, neutrino oscillations can be observed via $\nu_{\mu}$ disappearance. This talk will go over the latest atmospheric disappearance results from IceCube/DeepCore and the future outlook of the oscillation physics that can be done with such detector.
        Speaker: Joshua Hignight (Michigan State University)
    • 09:00 11:00
      Quark and Lepton Flavor Physics: 1 Superior A

      Superior A

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Convener: Diego Milanes Carreno (Universidad Nacional de Colombia (CO))
      • 09:00
        CP asymmetries in $D$ decays to two pseudoscalars (15' + 5') 20m

        Current experiments measuring CP asymmetries in $D$ meson decays approach a sensitivity which is comparable to the tiny Standard-Model (SM) predictions for these quantities. However, the errors of the SM predictions, which essentially all rely on the approximate SU(3) flavour symmetry, make the search for new physics in $D$-meson CP asymmetries difficult. I present new calculations which control the dominant hadronic uncertainties up to linear order in SU(3) breaking. I further discuss the potentially large CP asymmetry in $D^0 \to K_S K_S$.

        Speakers: Ulrich Nierste (Karlsruhe Institute of Technology (KIT)), Ulrich Nierste (Unknown), Ulrich Nierste (KIT)
      • 09:20
        Mixing and CP violation in charm decays at LHCb (10' + 5') 15m
        LHCb has collected the world's largest sample of charmed hadrons. This sample is used to measure $D^0 - \bar D^0$ mixing and to search for direct and indirect CP violation. New measurements from several decay modes are presented, as well as prospects for future sensitivities.
        Speaker: Adam Davis (University of Cincinnati (US))
      • 09:35
        Recent BABAR results on mixing and CP violation in the charm sector. (10' + 5') 15m
        Based on the full data set recorded with the BABAR detector at center-of-mass energies at and near the Upsilon(4S) resonance, and corresponding to an integrated luminosity of approximately 468 fb-1, we measure the D0-D0bar mixing parameters using a time-dependent amplitude analysis of the decay D0 -> pi+pi-pi0. The neutral D-meson candidates are selected from D*(2010)+ -> D0 pi+ decays where the flavour at the production is identified by the charge of the low-momentum pion. With the same data set we perform an analysis of CP-asymmetries in the singly Cabibbo-suppressed decay process D+ -> pi+ pi0. We discuss the sensitivity to CP-violating phases, and the correspondening New Physics constraints.
        Speaker: Alessandro Pilloni (Jefferson Lab)
      • 09:50
        Search for $CP$ violation in $D$ decays to radiative and hadronic decays (10' + 5') 15m
        Enhancement of branching fraction and $CP$ violation in $D$ decays would represent a signal of physics beyond the Standard Model. Using the large data sample accumulated by the Belle experiment at KEKB asymmetric energy $e^+ e^−$ collider, we present the results for search for rare $D$ decays such as $D^0 \to \gamma\gamma$, along with the search for $CP$ violation in $D^0 \to V \gamma$ ($V$ = light vector meson) and $D^0 \to K_S^0 K_S^0$.
        Speaker: Nibedita Dash (IIT Bhubaneswar)
      • 10:05
        CP Asymmetries in Many-Body Final in Beauty & Charm Transitions (15' + 5') 20m
        Our community has focused on two-body final states in B & D decays. The SM produces at least the leading source of CP violation in B transitions; none has been established yet in charm decays. It is crucial to measure three- and four-body final states (FS) with accuracy and to compare with predictions based on refined theoretical tools. Correlations between different final states (FS) based on CPT invariance are often not obvious, how to apply them and where. We have to probe regional asymmetries and use refined parameterization of the CKM matrix. One uses (broken) U- & V-spin symmetries for spectroscopy. The situations with weak decays of hadrons are much more complex. The impact of strong re-scattering is large, and it connects U- & V-spin symmetries. Drawing diagrams often does not mean we understand the underlying dynamics. I give a few comments about probing the decays of beauty & charm baryons. I discuss the ‘strategies’ more than the ‘tactics’.
        Speaker: Ikaros Bigi (Univ. of Notre Dame)
      • 10:25
        D0D0-bar mixing and hadronic D decays at BESIII (10' + 5') 15m
        The BESIII detector at BEPCII collider accumulated 2.93 and 0.482 fb-1 data at 3.773 and 4.009 GeV. Using the quantum correlation property of D0D0-bar production, we determine the parameters of the strong phase difference and D0D0-bar mixing. Also, we perform Dalitz plot analysis on D+ to Kspi+pi0, measurements of D0 to KsKK, D0(+) to omegapi0(+) and Ds+ to etaprime X, Ds+ to etaprime rho+.
        Speaker: Xiao-Rui Lyu (UCAS)
      • 10:40
        Standard Model Prediction for Direct CP-violation in K-decays, and Long-Distance Contributions to Kaonic Ampltiudes (15' + 5') 20m
        Recent theoretical and computational advances have enabled the precision determination of multi-particle Standard Model amplitudes using lattice QCD. In particular the measure of direct CP-violation in kaon decays, \epsilon', has now been computed with errors that are 40% of the experimental value; this quantity is highly sensitive to BSM sources of CP-violation and may help shed light on the origin of the matter-antimatter asymmetry in the Universe. We will discuss this calculation of \epsilon' and our present and future efforts in improving our result. We will also briefly discuss our ongoing calculations of other long-distance contributions to kaonic amplitudes sensitive to new physics.
        Speaker: Christopher Kelly (Brookhaven National Laboratory)
    • 09:00 11:00
      Strong Interactions and Hadron Physics: LHC Exotic hadrons, b, charm Ontario

      Ontario

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Convener: Xiaoyan Shen (Univ. of Science & Tech. of China (CN))
      • 09:00
        Exotic hadrons at the LHC (25' + 5') 30m
        Merged abstract
        Speaker: Liming Zhang (Tsinghua University (CHINA))
      • 09:30
        Exotic hadrons at the Tevatron (15' + 5') 20m
        Merged abstract
        Speaker: Daria Zieminska (Indiana University (US))
      • 09:50
        b-hadron production at ATLAS and CMS (20' + 5') 25m
        Merged abstract
        Speaker: Eduard De La Cruz Burelo (Centro de Investigación y de Estudios Avanzados del IPN (MX))
      • 10:15
        b-hadron production at LHCb (15' + 5') 20m
        Merged abstract
        Speaker: Marina Artuso (Syracuse University (US))
      • 10:35
        charm-hadron production at hadron colliders (20' + 5') 25m
        Merged abstract
        Speaker: Miriam Watson (University of Birmingham (GB))
    • 09:00 11:00
      Top Quark and Electroweak Physics: 1 Huron

      Huron

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Convener: Pedro Vieira De Castro Ferreira Da Silva (CERN)
      • 09:00
        Top quark pair production cross-section measurements with the ATLAS detector (15' + 5') 20m
        Measurements of the inclusive and differential top-quark pair production cross sections in proton-proton collisions with the ATLAS detector at the Large Hadron Collider are presented at a center of mass energy of 8 TeV and 13 TeV. The inclusive measurements reach high precision and are compared to the best available theoretical calculations. Differential measurements of the kinematic properties of top quark pair production are also discussed. These measurements, including results using boosted tops, probe our understanding of top pair production in the TeV regime. The results, unfolded to particle and parton level, are compared to Monte Carlo generators implementing LO and NLO matrix elements matched with parton showers and NLO QCD calculations.
        Speaker: James William Howarth (Deutsches Elektronen-Synchrotron (DE))
      • 09:20
        Top pair cross section measurements (incl./diff.) and event modelling with the CMS detector (15' + 5') 20m

        Precision measurements are presented of the top-quark pair inclusive production cross section in proton-proton collisions at the LHC at centre-of-mass energies of 7, 8 and 13 TeV. The data are collected with the CMS experiment during the years 2011, 2012, and 2015. The analyses profit from different top quark final states and make use of events with two, one or no reconstructed charged leptons. In most analyses b-jet identification is used to increase the purity of the selection. The backgrounds are determined using data-driven techniques. The results are combined with each other and compared with theory predictions. Indirect constraints on both the top quark mass and alpha_s are obtained through their relation to the inclusive cross section.
        Differential top quark pair production cross sections are measured in proton-proton collisions at the LHC at centre-of-mass energies of 7, 8, and 13 TeV, using data collected by the CMS experiment in the years 2011, 2012, and 2015. The differential cross sections are measured as functions of various kinematic observables, including the transverse momentum and rapidity of the (anti)top quark and the top-antitop system and the jets and leptons of the event final state. Multiplicity and kinematic distributions of the jets produced in addition to the top pair are investigated. Measurements of the associate production of top quark pairs with additional b-quarks, and a search for four-top production are also presented.
        State-of-the-art theoretical predictions accurate to next-to-leading order QCD interfaced with Pythia8 and Herwig++ event generators are tested by comparing the unfolded ttbar differential data collected with the CMS detector at 8 TeV. These predictions are also compared with the underlying event activity distributions in ttbar events using CMS proton-proton data collected in 2015 at a center of mass energy of 13 TeV.

        Speaker: James Michael Keaveney (Deutsches Elektronen-Synchrotron (DE))
      • 09:40
        Theoretical results for top-quark cross sections and distributions (15' + 5') 20m
        I present new results and updates for total cross sections and differential distributions in top-antitop pair and single-top production. Soft-gluon corrections are added to exact fixed-order results to provide the best predictions up to N^3LO. Total cross sections and transverse-momentum and rapidity distributions are presented and compared with data at LHC and Tevatron energies.
        Speaker: Nikolaos Kidonakis (Kennesaw State University)
      • 10:00
        Latest developments on WbWb production at hadron colliders (15' + 5') 20m
        In the last few years we have seen a number of advances in the higher order calculation of this more complex final state. I will review these new developments and illustrate how they impact existing approaches in Monte Carlo event generation and experimental measurements of the top-quark antitop-quark sector.
        Speaker: Jan Winter (Michigan State University (MSU), USA)
      • 10:20
        Measurements of ttbar+X using the ATLAS detector (15' + 5') 20m
        The large integrated luminosity provided by the LHC enables the production of a significant number of top-quark pairs in association with addition jets or additional gauge bosons. The production of top-quark pairs in association with W and Z bosons is presented. The measurement uses events with multiple leptons and in particular probes the coupling between the top quark and the Z boson. The cross-section measurement of photons produced in association with top-quark pairs is also discussed. The production cross-section of top-quark pairs in association with additional light or heavy jets is presented. These process are important backgrounds to searches for new physics and are all compared to the best available theoretical calculations.
        Speaker: Dr Yichen Li (Siegen University)
      • 10:40
        Latest developments in the simulation of final states involving top-pair and heavy bosons (15' + 5') 20m
        I will give an overview of recent progress in the simulation of final states involving top-quarks and vector bosons pair. In the first part of the talk, I'll discuss the obstacles, and present recently found solutions needed to simulate, at NLO+PS accuracy, fully differential top pair production (pp -> 4 leptons + b bar), retaining exactly offshellness and interference effects. In the second part, I'll introduce very quickly the MiNLO method, and then show a recent application, namely the simultaneous NLO+PS description of WW and WW+1jet production.
        Speaker: Emanuele Re (LAPTh Annecy)
    • 11:00 11:30
      Break 30m
    • 11:00 14:00
      Outreach Training 3h Riverwalk A/B

      Riverwalk A/B

      Training session for volunteers for library program. Stop by for 30 minutes when you have time to learn about your presentation.

    • 11:20 13:30
      Higgs Physics: 2 Chicago 9

      Chicago 9

      Conveners: Kirill Prokofiev (The Hong Kong University of Science and Technology (HK)), Stefania Gori (Perimeter Institute/Cincinnati University)
      • 11:20
        Measurement of fermionic couplings of the SM Higgs boson using the leptonic decay channels with the ATLAS detector (12' + 3') 15m
        The latest results on the measurement of the cross sections and couplings of the Higgs boson in the leptonic decay channels with the ATLAS detector are presented, using approximately 10 fb-1 of pp collision data collected at 13 TeV
        Speaker: Dr Christian Grefe (Universitaet Bonn (DE))
      • 11:35
        Measurements of Higgs boson production and properties in the di-lepton decay channel using the CMS detector (12' + 3') 15m
        The most recent results from CMS on the search for a neutral Higgs bosons decaying into a tau or a muon pair will be presented.
        Speaker: Pooja Saxena (Deutsches Elektronen-Synchrotron (DE))
      • 11:50
        Search for the SM Higgs boson in VH(bb) channel using the ATLAS detector (12' + 3') 15m
        ATLAS results in the search for the Higgs boson in the VH production mode with the Higgs decaying to a b-quark pair will be given, using approximately 10 fb-1 of pp collision data collected at 13 TeV.
        Speaker: Patricia Conde Muino (LIP Laboratorio de Instrumentacao e Fisica Experimental de Part)
      • 12:05
        Measurements of Higgs boson production and properties in the bbbar decay channel using the CMS detector (12' + 3') 15m
        The most recent results from CMS on the search for a neutral Higgs bosons decaying to bottom quarks will be presented.
        Speaker: Chris Palmer (Princeton University (US))
      • 12:20
        Search for the SM Higgs boson in the ttH production channel using the ATLAS detector. (12' + 3') 15m
        The associated production of the Higgs boson with top quarks should allow the direct observation of the coupling of the Higgs boson to top quarks. The channel also benefits for a large cross-section increase between 8 and 13 TeV. ATLAS results in the search for the Higgs boson in the ttH production mode will be presented.
        Speaker: John Stakely Keller (DESY (DE))
      • 12:35
        Search for Higgs bosons produced in association with top quarks in the CMS detector (12' + 3') 15m
        We present new results of CMS searches for a Higgs boson produced in association with top quarks, and decaying to gamma gamma, ZZ, WW, tautau, and bbbar final states. The analyses use pp collision data collected at center-of-mass energies of 13 TeV in 2015 and part of 2016. Where possible, results will be combined to give a total ttH sensitivity.
        Speaker: Marco Peruzzi (CERN)
      • 12:50
        Determination of the Higgs boson properties with the ATLAS detector. (15' + 5') 20m
        The results obtained from the different search channels are combined to determine global properties of the SM Higgs boson production and decay, measured at 13 TeV using about 10 fb-1 of p-p collisions.
        Speaker: Bertrand Laforge (Lab.de Phys.Nucleaire et de Hautes Energie/LPNHE (LPNHE))
      • 13:10
        Combined results of the 125 GeV Higgs boson on the mass, tensor structure, and couplings measured by the CMS detector (15' + 5') 20m
        The status of mass, tensor structure, and couplings measurements of the 125 GeV Higgs boson using the combination of all decay channels from the CMS experiment will be discussed in this talk.
        Speaker: Ulascan Sarica (Johns Hopkins University (US))
    • 11:30 13:30
      Accelerator: Physics, Performance, R&D and Future Facilities: 2 Superior B

      Superior B

      Conveners: Jie GAO (IHEP), Katsunobu Oide (High Energy Accelerator Research Organization (JP))
      • 11:30
        Fermilab PIP-II Status and Strategy (15' + 5') 20m
        Proton Improvement Plan-II (PIP-II) is the centerpiece of Fermilab’s plan for upgrading the accelerator complex to establish the leading facility in the world for particle physics research based on intense proton beams. PIP-II has been developed to provide 1.2 MW of proton beam power at the start of operations of the Long Baseline Neutrino Experiment (LBNE), while simultaneously providing a platform for eventual extension of LBNE beam power to >2 MW and enabling future initiatives in rare processes research based on high duty factor/higher beam power operations. PIP-II is based on the construction of a new, 800 MeV, superconducting linac, augmented by improvements to the existing Booster, Recycler, and Main Injector complex. PIP-II is currently in the development stage with an R&D program underway targeting the front end and superconducting rf acceleration technologies. This paper will describe the status of the PIP-II conceptual development, the associated technology R&D programs, and the strategy for project implementation. Work supported by the Fermi Research Alliance under U.S. Department of Energy contract number DE-AC02-07CH11359
        Speaker: Shekhar Mishra (Fermilab)
      • 11:50
        Achievement and future upgrade of J-PARC accelerator (15' + 5') 20m
        The J-PARC accelerator comprises an H- linac, a 3-GeV Rapid-Cycling Synchrotron (RCS), a 30-GeV slow cycling Main Ring synchrotron (MR). The MR has two beam extraction systems; a fast extraction for beam delivery to the neutrino beam line of the Tokai-to-Kamioka (T2K) experiment, and a slow extraction for beam delivery to particle and nuclear physics experiments in the hadron experimental hall. The MR delivered 400 kW beam in maximum to the T2K experiment and 43 kW beam to the hadron experimental hall. For near future plan, high repetition rate scheme will be adopted to achieve beam power higher than the design specification 750 kW. The cycle time of the FX will be decreased from the present 2.48 s to 1.3 s by replacing all of main magnet power supplies. The budget of the power supplies have been approved by Japanese government in JFY2016. In this paper, the most recent status of the J-PARC accelerator and details of the future upgrade plan will be presented.
        Speaker: Tadashi Koseki (KEK)
      • 12:10
        Update of the HL-LHC Baseline Configuration, operation scenarios and performance projections (15' + 5') 20m
        The presentation summaries the current baseline configuration of the HL-LHC and highlights the most recent changes. Following the end of the EU funded design study the HL-LHC project published the main technical choices in form a Preliminary Design report. After the publication of the PDR, the design work was further updated in form of a Technical Design Report in 2015 and, following a cost and schedule review in 2015, the HL-LHC baseline configuration has been further revised. This presentation summaries the main changes in the configuration and discusses the current operation scenarios and performance projections.
        Speaker: Gianluigi Arduini (CERN)
      • 12:30
        Fermilab's Accelerator Complex: Current Status, Upgrades and Outlook (15' + 5') 20m
        Current status, upgrades and outlook of the Fermilab's accelerator complex will be presented. Expectations of beam delivery for the neutrino experiments and intensity frontier research for the next decade will be discussed.
        Speaker: Mary Convery (Fermilab)
      • 12:50
        Review of Laser Backscattering as an Approach for Electron Beam Energy Measurement (15' + 5') 20m
        Direct measurement of energy spectrum of backscattered laser photons allows to determine the average energy of beam electrons. With HPGe detector the mean energy could be measured with relative accuracy about 30ppm in absolute scale for beam energies below 2 GeV. This report includes an overview of beam energy measurement systems for VEPP-4M, BEPC-II and VEPP-2000 colliders. Some ideas about how to extend the capabilities of the approach to higher beam energies will be presented on the example of future Higgs factories.
        Speaker: Nickolai Muchnoi
      • 13:10
        Simulation of orientational coherent effects via Geant4 (15' + 5') 20m
        Simulation of orientational coherent effects via Geant4 Beam manipulation of high- and very-high-energy particle beams is a hot topic in accelerator physics. Coherent effects of ultra-relativistic particles in bent crystals allow the steering of particle trajectories thanks to the strong electrical field generated between atomic planes. Recently, a collimation experiment with bent crystals was carried out at the CERN-LHC [1], paving the way to the usage of such technology in current and future accelerators. Geant4 [2] is a widely used object-oriented tool-kit for the Monte Carlo simulation of the interaction of particles with matter in high-energy physics. Moreover, its areas of application include also nuclear and accelerator physics, as well as studies in medical and space science. We present the first Geant4 extension for the simulation of orientational effects in straight and bent crystals for high energy charged particles [3]. The model allows the manipulation of particle trajectories by means of straight and bent crystals and the scaling of the cross sections of hadronic and electromagnetic processes for channeled particles. Based on such a model, an extension of the Geant4 toolkit has been developed. The code and the model have been validated by comparison with published experimental data regarding the deflection efficiency via channeling and the variation of the rate of inelastic nuclear interactions. [1] CERN Bulletin 11 November 2015, Crystals channel high-energy beams in the LHC (2015). [2] S. Agostinelli et al., Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 506, 250 (2003). [3] Bagli, E., Asai, M., Brandt, D., Dotti, A., Guidi, V., and Wright, D. H., Eur. Phys. J. C 74, 2996 (2014).
        Speaker: Enrico Bagli (Universita di Ferrara & INFN (IT))
    • 11:30 13:30
      Astro-particle Physics and Cosmology: Ultra-high Energy Cosmic Rays Chicago 10

      Chicago 10

      Convener: Prof. Justin Vandenbroucke (University of Wisconsin)
      • 11:30
        Latest Results from the Pierre Auger Observatory (15' + 5') 20m
        The Pierre Auger Observatory, located near the town of Malargüe, Argentina, has been detecting ultra-high energy cosmic rays for more than ten years. An essential feature of the 3,000 km$^2$ Observatory is its hybrid design: cosmic rays above 10$^{17}$ eV are detected through the observation of the associated air showers with different and complementary techniques, from surface detector arrays and fluorescence telescopes to radio antennas. The analyses of the multi-detector data have enabled high-statistics and high-precision studies of the energy spectrum, mass composition and distribution of arrival directions of ultra-high energy cosmic rays (UHECRs), the investigation of whose origin being a primary objective of the Observatory. The data have also enabled us to search for ultra-high energy photons and neutrinos, and to perform a measurement of the proton-air cross section at 57 TeV center-of-mass energy. A coherent interpretation of all these recent results, requiring the use of LHC-tuned interaction models to describe the air showers, opens new directions regarding the properties of UHECR sources. The resulting picture, calling into question the perception of UHECRs at the time of the conception of the Observatory in the early 1990s, has led to a plan for an upgrade of the Observatory. In this talk, I will present the most recent results obtained with the Pierre Auger Observatory, their interpretation, and the motivations for upgrading the Observatory - upgrade which is currently undertaken.
        Speaker: Olivier Deligny (CNRS/IN2P3)
      • 11:50
        Results from the Telescope Array Experiment (15' + 5') 20m
        Since 2008, the Telescope Array (TA) has been the largest experiment observing ultrahigh energy cosmic rays in the northern sky. TA combines the precision of the air fluorescence technique with the efficiency of a ground array. Currently, TA consists of a surface detector with 507 scintillation counters, covering over 700 square kilometers, along with 38 fluorescence telescopes divided over three fluorescence stations located along the periphery of the array. TA has now collected over eight years of data. We will present the cosmic ray spectra from both TA and its low energy extension (TALE), covering a range of energies from just below 10 PeV to over 100 EeV. We will also present an update of the measurement of mass composition by TA, and show the latest results from our search for arrival direction anisotropy, including the apparent hotspot at the highest energies, seen in the vicinity of Ursa Major. Lastly, we will discuss the planned upgrade, TAx4, which will quadruple the detection area of our experiment, and allow us to collect 20 TA-years equivalent of data by 2020.
        Speaker: Prof. Charles Jui (Telescope Array Collaboration)
      • 12:10
        Search for anisotropy of UHECR with the Telescope Array experiment (12' + 3') 15m
        Telescope Array (TA) is a hybrid detector of ultra-high energy cosmic rays (UHECRs) sensitive to cosmic rays with energies from about 10^16 eV to over 10^20 eV. The detector, which is operational from May 2008, by now has collected full 8 years of data and accumulated the largest to date UHECR data set in the Northern hemisphere. We will summarize the searches for anisotropy of UHECRs that have been performed in TA.
        Speaker: Peter Tinyakov (Universite Libre de Bruxelles (ULB))
      • 12:25
        Detection of High Energy Cosmic Rays at the Auger Engineering Radio Array (12' + 3') 15m
        Detection of (ultra) high energy cosmic rays with the use of radio frequency emission in extensive air showers has been proven as complimentary to existing ground array detection techniques. Great progress has been booked in the theoretical understanding of the emission processes and in their Monte Carlo modelling. These have led to experimental results, notably also at the Auger Engineering Radio Array, on energy, angular and mass composition resolution of the primary cosmic rays. Recent results will be shown. The measured resolutions turn out to be competitive with existing techniques and they have independent uncertainties. Implications for cross calibration with existing techniques and for future large scale application of radio detection of ultra high energy cosmic rays will be discussed.
        Speaker: Sijbrand De Jong (Radboud University Nijmegen (NL))
      • 12:40
        First Results from the Telescope Array RADAR (TARA) Cosmic Ray Observatory Remote Stations (12' + 3') 15m
        The TARA Remote Stations (RS) are autonomous Very-High-Frequency radio receivers for the detection of Ultra-High-Energy Cosmic Rays (UHECR). UHECR cause charged showers in the atmosphere which may become dense enough to reflect radio waves. The RS use firmware-based filtration and trigger techniques to receive and record these reflections from a dedicated VHF transmitter. We are co-located with the primary TARA detector as well as the Telescope Array (TA) ground-based cosmic ray detector, which allows us to make coincident detection studies. In this presentation, first results of the RS experiment, which ran from February to April of 2016, are relayed and compared to previous such measurements. The station design and novel trigger mechanism are briefly discussed, as well as future prospects for radio-based cosmic ray physics.
        Speaker: steven prohira (University of Kansas)
      • 12:55
        The Origin of the Broken Power Law Spectrum for Cosmic Rays (15' + 5') 20m
        A long-standing puzzle in cosmic ray physics has been the nature of the spectrum, which is very well modeled by a broken power law with differing exponents, both close to -3, above and below the "knee". We show that a rather simple hadronic evaporation model reproduces the correct exponents, and the location of the knee without free parameters. The model is predictive, with some successful predictions already and has broader implications for nuclear physics and particle astrophysics.
        Speaker: John Swain (Northeastern University (US))
      • 13:15
        Prompt atmospheric neutrino flux (12' + 3') 15m
        Cosmic rays incident on the Earth produce neutrinos through the interaction with nuclei in the atmosphere. At the energies above about 1 PeV, neutrinos from the charmed hadron decay (prompt neutrinos) dominate those from the pion and kaon decay (conventional neutrinos). The prompt neutrinos are important because they are the background to the astrophysical neutrinos. We calculate the fluxes of the prompt atmospheric muon neutrinos in the different frameworks: perturbative QCD and the dipole model, using the most recent versions of the PDFs and the cosmic ray spectrum. Nuclear effects are included and their impact is investigated. We compare the results from the various models and estimate the uncertainties. The new calculation of the prompt atmospheric tau neutrino flux is also presented.
        Speaker: Dr Yu Seon Jeong (KISTI)
    • 11:30 13:30
      Beyond the Standard Model: 2 Chicago 7

      Chicago 7

      Conveners: Bruce Mellado Garcia (University of the Witwatersrand), Seema Sharma (Indian Institute of Science Education and Research (IN))
      • 11:30
        Search for electroweak production of SUSY at CMS (15' + 5') 20m

        Searches for the direct electroweak production of supersymmetric charginos and neutralinos in topologies containing leptons and W, Z, and Higgs bosons are presented.

        Speaker: Santiago Folgueras (Purdue University (US))
      • 11:50
        Global Fits of the MSSM with GAMBIT (15' + 5') 20m
        The wide range of probes of physics beyond the standard model leads to the need for tools that combine experimental results to make the most robust possible statements about the validity of theories of new physics and the preferred regions of their parameter space. In this talk, I will introduce a new code for such analyses: GAMBIT, the Global and Modular BSM Inference Tool. GAMBIT is a flexible and extensible framework for global fits of essentially any BSM theory. The code currently incorporates direct, indirect, solar and relic density searches for dark matter, limits on production of new particles from the LHC and LEP, complete flavor constraints from LHCb, LHC Higgs production and decay measurements, and various electroweak precision observables. I will discuss both the code's capabilities and results of scans of the parameter space of the MSSM.
        Speaker: Jonathan Cornell (McGill University)
      • 12:10
        Phenomenological MSSM interpretation of CMS results (15' + 5') 20m
        Using a global Bayesian analysis, it is shown how the results from searches for supersymmetry performed by CMS constrain the Minimal Supersymmetric Standard Model (MSSM). The study is performed within the framework of the phenomenological MSSM (pMSSM), a 19-parameter realization of the R-parity conserving weakscale MSSM, that captures most of the latter’s phenomenological features and which, therefore, permits robust conclusions to be drawn about the MSSM.
        Speaker: Samuel Louis Bein (Florida State University (US))
      • 12:30
        CheckMATE: Checkmating new physics at the LHC (15' + 5') 20m
        In the first four years of running, the LHC has delivered a wealth of new data that is now being analysed. The two multi-purpose detectors, ATLAS and CMS, have performed many searches for new physics but theorists are eager to test their own particular model. We present the program CheckMATE (Check Models At Terascale Energies) that helps to automise this procedure so that new theories can easily be checked against the latest results. The backbone of CheckMATE is a library of almost 50 LHC analyses that almost any new physics model can be tested against. The user only needs to provide a model in SLHA format and CheckMATE will automatically decide if the model is ruled out or not. In addition, if new physics begins to appear, CheckMATE offers the possibility to quickly determine the model that best fits the data. New CheckMATE features are also presented including Machine Learning tools that allow for fast and accurate scans of theories with many free parameters. In addition, a novel technique using kinematic transformations of existing events will be presented that promises to speed up the determination of model best fit points by many orders of magnitude. https://checkmate.hepforge.org/
        Speaker: Jamie Tattersall (RWTH Aachen)
      • 12:50
        Search for third generation squarks in pp collisions at 13 TeV with CMS (15' + 5') 20m

        A search for direct top squark pair production in the hadronic final state is presented. The data used are 2.3 fb-1 of pp collision data at 13 TeV taken with the CMS detector in 2015.

        Speaker: Nadja Strobbe (Fermi National Accelerator Lab. (US))
      • 13:10
        Search for third generation squarks in pp collisions at 13 TeV with ATLAS (15' + 5') 20m

        Naturalness arguments for weak-scale supersymmetry favour supersymmetric partners of the third generation quarks with masses not too far from those of their Standard Model counterparts. Top or bottom squarks with masses of a few hundred GeV can also give rise to large direct pair production rates at the LHC. The recent increase in the center of mass energy of the proton-proton collisions gives a unique opportunity to extend the sensitivity to production of supersymmetric particles at the Large Hadron Collider. The talk presents recent ATLAS results from searches for direct stop and sbottom pair production, with emphasis on those obtained using proton-proton collisions at a centre-of-mass energy of 13 TeV.

        Speaker: Kilian Rosbach (Universität Freiburg (DE))
    • 11:30 13:30
      Computing: Overview Ontario

      Ontario

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Convener: Randy Sobie (University of Victoria (CA))
      • 11:30
        CMS operations for Run II: preparation and commissioning of the offline infrastructure (15' + 5') 20m
        The restart of the LHC coincided with an intense activity for the CMS experiment. Both at the beginning of Run II in 2015 and the restart of operations in 2016, the collaboration was engaged in an extensive re-commissioning of the CMS data-taking operations. After the long stop, the detector was fully aligned and calibrated. Data streams were redesigned, to fit the priorities dictated by the physics program for 2015 and 2016. A new reconstruction software (both online and offline) was commissioned with early collisions and further developed during the year. A massive campaign of Monte Carlo production was launched, to assist physics analyses. This presentation reviews the main event of this commissioning journey and describes the status of CMS physics performances for 2016.
        Speaker: Gianluca Cerminara (CERN)
      • 11:50
        First experience with the new ATLAS analysis model (15' + 5') 20m
        During the Long shutdown of the LHC, the ATLAS collaboration overhauled its analysis model based on experience gained during Run 1. The main components are a new analysis format and Event Data Model which can be read directly by ROOT, as well as a "Derivation Framework" that takes the Petabyte-scale output from ATLAS reconstruction and produces smaller samples targeted at specific analyses, using the central production system. We will discuss the technical and operational aspects of this new system and review its performance during the first year of 13 TeV data taking.
        Speaker: Jack Cranshaw (Argonne National Laboratory (US))
      • 12:10
        The Geant4 Validation Repository (15' + 5') 20m
        Geant4 is a toolkit for the simulation of the passage of particles through matter. Its areas of application include high energy, nuclear and accelerator physics as well as studies in medical and space science. The Geant4 collaboration regularly performs validation and regression tests through its development cycle. A validation test compares results obtained with a specific Geant4 version with data obtained by various experiments. On the other hand, a regression test compares results of two or more versions of Geant4 for any observable. To make validation materials easily available to both collaborators and the user community in general, most of the validation data are stored in one central repository. The availability of this data should help experimenters to find answers to questions like: • What data is used to validate Geant4 physics? • How well does Geant4 describe the data of interest for the experiment? • Which model provided by Geant4 best describes the data of interest for the experiment? • What are the benefits of switching to the latest improved version of Geant4? Having easy access to this data might also help in estimating the systematical uncertainties stemming from the simulation of physical processes like the response of a detector or predicting the flux of neutrinos produced when a target is bombarded with protons. The repository consists of a relational database that stores experimental data and Geant4 test results, accessed through a Java API and a web application which allows to select and search the data and display the results graphically. Future plans include providing a web API, expanding the number of experimental data sets and providing quantitative statistical tests. We also want to stress that the project is not specific to Geant4 and it can be used with other Monte Carlo (e.g. GENIE) tools as well.
        Speaker: Hans-Joachim Wenzel (Fermi National Accelerator Lab. (US))
      • 12:30
        Linear Collider Software and Computing (15' + 5') 20m
        The ILC/CLIC linear collider community has for many years followed a strategy of developing common and generic software tools for studying the physics potential as well as continuously optimizing their detector concepts. The basis of the software framework is formed by the common event data model LCIO and the detector description toolkit DD4hep. DD4hep is a recently developed, generic detector description toolkit that allows to provide all aspects of detector geometry, materials and physics properties of the detector as needed for simulation, reconstruction and analysis from one single source of information. It offers an application framework for running full simulations with Geant4 as well as interfaces for handling conditions data and simulating mis-alignment of detector components. DD4hep has also been adopted by detector projects at FCC and CEPC. The proposed detectors for ILC and CLIC combine unprecedented momentum and impact parameter resolution with very high jet energy resolution, achieved with highly granular calorimeters and the application of particle flow reconstruction algorithms (PFA). The reconstruction algorithms for tracking and PFA are written as much as possible in a detector independent way, which on the one hand facilitates common software developments and on the other hand simplifies the comparison of different detector variants. For large scale Monte Carlo production and physics analyses the iLCDIRAC system provides a unified interface to the distributed computing resources used by the LC community. A simplified API allows to transparently submit jobs running all of the LC software to a large number of different batch and Grid-resources that are either directly provided or opportunistically available for the VO ILC. In this talk we will present the complete LC software for simulation and reconstruction with a focus on recent developments and application to ILD and the new CLIC detector model.
        Speaker: Nikiforos Nikiforou (CERN)
      • 12:50
        Overview and Highlights of the Belle II Computing and Software (25' + 5') 30m
        The Belle II experiment is the next-generation flavor factory experiment at the SuperKEKB accelerator in Tsukuba, Japan. The first physics run will take place in 2017, then we plan to increase the luminosity gradually. We will reach the world's highest luminosity L=8x10^35 cm-2s-1 finally and collect a total of 50ab-1 data by the end of 2024. Such a huge amount of data allows us to explore the new physics possibilities through a large variety of analyses in quark sectors as well as tau physics and to deepen understanding of nature. In terms of the software and computing, the Belle II experiment is highly challenging. The higher luminosity leads to higher background levels and requires a major upgrade of the detector. As a consequence, the simulation, reconstruction, and analysis software must also upgraded substantially. Most of the software has been redesigned from scratch, taking into account the experience from Belle, the predecessor of Belle II, and other experiments and utlizing new technologies. The Belle II computing system is expected to manage the process of massive raw data, production of copious simulation and many concurrent user analysis jobs. The required resource estimation for the Belle II computing system shows a similar evolution curve of the resource pledges in LHC experiments. Eventually, we have to handle several tens of Petayte of beam data per year. Here, the Belle II is a worldwide collaboration of about 700 scientists working in 23 countries and region. It is natural to adopt a distributed computing model based on existing technologies and infrastructure. We chosen DIRAC as a workload and data management system, which provides us an interoperability of heterogeneous computing systems such as grids with different middleware, academic/commercial clouds and local computing clusters. This year, we will experience the first beam data from the SuperKEKB accelerator, the advanced Trans-Pacific network and the full replacement of the central computing system at KEK with upgraded resources. We will present the overview and highlights of the recent achievements and present status of the Belle II computing system and software in this presentation.
        Speaker: Malachi Schram
    • 11:30 13:30
      Detector: R&D and Performance: Calorimeter Chicago 8

      Chicago 8

      Convener: Marzio Nessi (CERN)
      • 11:30
        Design studies for the Phase II upgrade of the CMS Barrel Electromagnetic Calorimeter (12' + 3') 15m
        The High Luminosity LHC (HL-LHC) will provide unprecedented instantaneous and integrated luminosity. The lead tungstate crystals forming the barrel part of the Electromagnetic Calorimeter (ECAL) of the Compact Muon Solenoid (CMS) will still perform well, even after the expected integrated luminosity of 3000fb-1 at the end of HL-LHC. The avalanche photodiodes (APDs) used to detect the scintillation light will also continue to be operational, although there will be some increase in noise due to radiation-induced dark currents. This will be mitigated by reducing the barrel operating temperature during HL-LHC running. The front-end electronics of the ECAL barrel will be replaced, in order to remove existing constraints on trigger rate and latency and to provide additional capability to fully exploit the higher luminosity delivered by the HL-LHC. New developments in high-speed optical links will allow single-crystal readout at 40 MHz to upgraded off-detector processors, allowing maximum flexibility and enhanced triggering possibilities. Improved algorithms, currently being evaluated in Run II, are being developed to reduce the effects of out-of-time pileup on signal amplitude reconstruction. The very-front-end system will also be upgraded, to provide improved rejection of anomalous signals in the APDs and to further mitigate the increases in APD noise and pileup. The potential to provide precise timing measurements for high energy signals (with a precision of approximately 20-30 ps) is being explored in the design of the new electronics. This should further mitigate the effects of large event pileup at HL-LHC, where around 200 interactions per 25ns bunch crossing are anticipated. The requirements of the new ECAL electronics will be reviewed and the status of design studies and evaluations of demonstrator systems will be provided. Finally, a summary of the expected performance of the upgraded detector during HL-LHC operation will be presented.
        Speaker: Toyoko Orimoto (Northeastern University (US))
      • 11:45
        Recent progress with very forward calorimeters for linear colliders (12' + 3') 15m
        This talk will summarize recent R&D developments for very compact calorimeters designed for precise luminosity measurement (LumiCal) and beam monitoring (BeamCal) in the very-forward region of future linear colliders. Silicon pad sensors for LumiCal have been equipped with modern read-out electronics and tested in the laboratory. Ultra-compact assemblies of these sensors, with only 1 mm spacing between tungsten absorber plates, have been developed. This stack has been exposed to few-GeV electron and muon test beams at CERN and DESY. First results on shower development in such a compact stack are presented and compared to Geant4 simulations.
        Speaker: Oleksandr Borysov (Tel Aviv University (IL))
      • 12:00
        Design, status and test of the Mu2e crystal calorimeter (12' + 3') 15m
        The Mu2e experiment at Fermilab searches for the charged-lepton flavor violating neutrino-less conversion of a negative muon into an electron in the field of a aluminum nucleus. The dynamics of such a process is well modelled by a two-body decay, resulting in a mono-energetic electron with an energy slightly below the muon rest mass (104.967 MeV). If no events are observed in three years of running, Mu2e will set a limit on the ratio between the conversion and the capture rates, \convrate, of $\leq 6\ \times\ 10^{-17} (@ 90 \%$ C.L.). This will improve the current limit by four orders of magnitude. A very intense pulsed muon beam ($\sim 10^{10} \mu/$ sec) is stopped on a target inside a long evacuated solenoid where the detector is located. The Mu2e detector is composed of a tracker, an electromagnetic calorimeter and a veto for cosmic rays externally surrounding the detector solenoid. The calorimeter plays an important role in providing excellent particle identification capabilities and an online trigger filter while aiding the track reconstruction capabilities. It should keep functionality in an environment where the neutron, proton and photon backgrounds from muon capture processes and beam flash deliver a dose of $\sim$ 120 Gy/year in the hottest area. It will also need to work in 1 T axial magnetic field and a $10^{-4}$ torr vacuum. The calorimeter requirements are to provide a large acceptance for 100 MeV electrons and reach at this energies: + a time resolution better than 0.5 ns; + an energy resolution *O($5\%$)*; + a position resolution of *O(1)* cm. The baseline calorimeter configuration consists of two disks, each one made of $\sim$ 700 undoped CsI crystals read out by two large area UV extended Silicon Photomultipliers (SIPM). These crystals emit at 310 nm with a large light yield (30 pe/MeV) when coupled in air to the SIPMs and provide a fast response and accurate timing having a time emission of $\tau \sim$ 20 ns. These crystals match the requirements for stability of response, high resolution and radiation hardness. SIPM signals are amplified, shaped and then read out through 200 msps waveform digitizers optically connected to the DAQ system. We present the calorimeter design, the experimental tests and the simulation carried out to prove the validity of the chosen configuration. In particular, we will summarise the results of the test beam with electron beams in the energy range between 80 and 140 MeV and the irradiation program carried out both with crystals and SiPM.
        Speaker: David Hitlin
      • 12:15
        Performance study for the CEPC ScW Ecal (12' + 3') 15m
        This article presents the status of a highly granular scintillator-based electromagnetic calorimeter (ScW Ecal) proposed to realize Particle Flow Algorithm for the CEPC. The ScW Ecal is a sandwich calorimeter consists of sampling and sensitive layers. The material of tungsten is selected as absorb material. The active layers are plastic scintillators consisting of 5×45 mm2 scintillator strips. The scintillator strips in adjacent layers are perpendicular to each other to achieve a 5×5 mm2 effective transverse size. Each strip is covered by a reflector film to increase collection efficiency and improve uniformity of the scintillation light. Photons from each scintillator strip are read out by very compact photon sensor, SiPM, attached at the end of the strip. Scintillator-SiPM unit is the core part of ScW Ecal. Optimization of the scintillator-SiPM unit such as shape of scintillator strip, thickness of scintillator strip, design of combination of a scintillator and a SiPM are discussed. Additionally, the performance of SiPM was tested. The gain is typically of order a few 105, the dark noise rate and the inter-pixel cross-talk probability are of order 100 kHz/mm2 and 0.1 respectively. The SiPM dynamic range is determined by the number of pixels.
        Speaker: Dr Zhigang Wang (IHEP,China)
      • 12:30
        Upgrade of the ATLAS Calorimeters for Higher LHC Luminosities (12' + 3') 15m
        The upgrade of the LHC will bring instantaneous and total luminosities which are a factor 5-7 beyond the original design of the ATLAS Liquid Argon (LAr) and Tile Calorimeters and their read-out systems. Due to radiation requirements and a new hardware trigger concept the read-out electronics will be improved in two phases. In Phase-I, a dedicated read-out of the LAr Calorimeters will provide higher granularity input to the trigger, in order to mitigate pile-up effects and to reduce the background rates. In Phase-II, completely new read-out electronics will allow a digital processing of all LAr and Tile Calorimeter channels at the full 40 MHz bunch-crossing frequency and a transfer of calibrated energy inputs to the trigger. Results from system design and performance of the developed read-out components, including fully functioning demonstrator systems already operated on the detector, will be reported. Furthermore, the current Forward Calorimeter (FCal) may suffer from signal degradation and argon bubble formation at highest instataneous luminosities. A high-granularity replacement is thus proposed, improving on reconstruction of jets and missing energy in the presence of pile-up. The corresponding R&D and expected performance results will be presented. Another upgrade project that is under consideration is a high-granularity timing-device in front of the end-cap/forward calorimeters to help particle identification and pile-up mitigation. The R&D work on this project will be also presented.
        Speaker: Ryne Michael Carbone (Columbia University (US))
      • 12:45
        test beam results on W-fiber and tilted plate calorimeters for a new RHIC experiment (12' + 3') 15m
        Achim Franz Brookhaven National Laboratory for the (s)PHENIX collaboration Over the 16 years of data taking at the Relativistic Heavy Ion collider, RHIC at BNL it became important to identify and analyze jets in the heavy ion collisions. Comparing jets from partons traversing the hot and dense medium to ones created in vacuum sheds light on the microscopic structure of the quark gluon plasma. One important tool in jet recognition is calorimetry with electromagnetic (EM) and hadronic (HAD) sections, ladder is missing on both current RHIC experiments. The PHENIX collaboration is planning substantial upgrades to a new detector with large coverage EM and HAD calorimetry and precision charged particle tracking. Beam tests of the W-fiber EM calorimeter and tilted plate HAD calorimeter have been performed in 2014 and 2016 at the FNAL test beam facility. This talk will present results from these tests and an outlook on the new experiment.
        Speaker: Dr Achim Franz (Brookhaven National Laboratory)
      • 13:00
        Technologies for highly granular electromagnetic and hadronic calorimeters (12' + 3') 15m
        The CALICE collaboration is developing highly granular calorimeters primarily to establish those technologies for experiments at a future lepton collider optimized for particle flow event reconstruction. These technologies are now also finding applications in other areas, such as upgrades for the LHC. After the successful validation of the principle of imaging calorimeters with different electromagnetic and hadronic physics prototypes, the emphasis has now shifted to technological prototypes that address system issues relevant for full detector systems and production techniques amenable to mass production. At examples such as the SiPM-based Analog Hadron Calorimeter and the RPC-based Semi-Digital Hadron Calorimeter, we will discuss new developments on electronic integration, the fabrication of large size detector elements extending over several square meters and techniques for the mass production and assembly of scintillator tiles. We will also report results from recent beam tests of such elements, and give an outlook on the development towards combined beam tests of different CALICE technological prototypes integrated via a common DAQ system.
        Speaker: Huong Lan Tran (Deutsches Elektronen-Synchrotron (DE))
      • 13:15
        The Shashlik Calorimeter, a LYSO/W plate Calorimeter for Precision EM Calorimeter in the High Luminosity LHC environment (12' + 3') 15m
        Over the last four years, a group of institutions active in the CMS experiment have developed with beam tests, radiation damage studies, and simulations a sampling EM calorimeter option that consists of two endcap 30,000 element LYSO/W plate configurations that would provide superb EM resolution for photons and electrons of order (10%)/√E+1%. When coupled with the existing HE hadron calorimeter it also delivers excellent hadronic resolution for jets in the harsh environment of the forward eta region of the LHC collider. We present the Shashlik configuration proposed to CMS together with the results of beam tests, radiation damage, and the performance of the configuration.
        Speaker: Brad Cox (University of Virginia (US))
    • 11:30 13:30
      Neutrino Physics: Reactor Chicago 6

      Chicago 6

      Convener: Seon-Hee Seo (Seoul National University)
      • 11:30
        What is delta m^2_{ee} ? (15' + 5') 20m
        Both Daya Bay and Reno have performed a combined analysis of sin^2 2 theta_{13} and Delta m^2_ee using reactor anti-neutrinos. In the literature there are various definitions of Delta m^2_ee, in this presentation I will review the properties of these different definitions and argue that "the nu_e average of Delta m^2_{31} and Delta m^2_{32}" is the not only L/E independent but the simplest definition on the market which is applicable to both the short baseline experiments, Daya Bay, RENO and Double Chooz as well as the medium baseline future experiments JUNO and RENO 50. see arXiv:1601.07464
        Speaker: Stephen Parke (Fermi National Accelerator Lab. (US))
      • 11:50
        Precision Measurement of $\sin^{2}(2\theta_{13})$ and $|\Delta m^{2}_{ee}|$ from Daya Bay (15' + 5') 20m
        In the three-flavor neutrino mixing framework, $\theta_{13}$ was the least known mixing angle. The Daya Bay experiment was designed to measure this parameter with unprecedented precison through a relative measurement with eight functionally identical electron anti-neutrino detectors deployed at three experimental halls near three high-power nuclear reactor complexes in south China. In March 2012 the Daya Bay experiment discovered the non-zero value of $\sin^{2}2\theta_{13}=0.092 \pm 0.016 \pm 0.005$ with significance better than $5\sigma$. The Daya Bay experiment is continuously improving the precision of $\sin^{2}2\theta_{13}$ and the effective neutrino mass squared difference $|\Delta m^{2}_{ee}|$ with more statistics, less background and better control of systematics. In this talk, I will report the latest status on the measurement of $\sin^{2}2\theta_{13}$ and $|\Delta m^{2}_{ee}|$ from the Daya Bay experiment.
        Speaker: Dr Jiajie Ling
      • 12:10
        Spectral measurment of theta13 and |dm_ee^2| at RENO (15' + 5') 20m
        The Reactor Experiment for Neutrino Oscillation(RENO) has been taking data since August 2011 using two identical detectors. In 2012 RENO has unambiguously measured the smallest neutrino mixing angle theta13 using 220 days data. In this talk, we report our new results with a larger data set and improved systematics using ~500 days data. They are a more precisely measured value of sin^2 (2theta_13) = 0.082 +- 0.009 (Stat.) +- 0.006 (Syst.) and our first measured value of |Delta m^2_ee| = 2.62 +0.21 -0.23 (Stat.) +0.12 -0.13 (Syst.) (X 10^-3 eV^2) based on a spectral analysis. Most improvement in the systematic error comes from the reduction of Li/He background uncertainty. We also report the result on the 5 MeV excess in the observed reactor neutrino spectrum.
        Speaker: Dr Jun-Ho Choi (Dongshin University)
      • 12:30
        First double-detector results from Double Chooz experiment (15' + 5') 20m
        Double Chooz is reactor neutrino experiment designed for precise measurement of the neutrino mixing angle $\theta_{13}$. The first non-zero indication of the $\theta_{13}$ from a reactor experiment was provided by Double Chooz in 2011. A robust observation of $\theta_{13}$ was followed in 2012 by the Daya Bay and RENO experiments with multiple detectors. The final precision of the $\theta_{13}$ by reactor experiment is a critical matter for current and future experiments addressing the possible observation of leptonic CP violation in neutrino oscillations, such as T2K and NOvA. Systematic errors in reactor experiments are on the per-mill level each, hence comparison of multi-experimental measurements is important in the field. In addition to the Far detector, the Near detector started operation since December 2014, which allows us to reach significantly improved sensitivity of the $\theta_{13}$. In this talk, we will show the first double-detector results for the $\theta_{13}$, combining ~1 year of double-detector and ~2 years of single-detector data analysis. We will also show information of reactor-neutrino flux normalization and shape.
        Speaker: Tsunayuki Matsubara (Tokyo Metropolitan University)
      • 12:50
        Design, status and plans of JUNO & RENO-50 as a comprehensive neutrino program (15' + 5') 20m
        The Status of JUNO and RENO-50 Both the Jiangmen Underground Neutrino Observatory (JUNO) in China and the RENO-50 in South Korea are multipurpose neutrino experiments designed to determine neutrino mass hierarchy and precisely measure oscillation parameters by detecting reactor neutrinos from nuclear power plants, observe supernova neutrinos, study the atmospheric, solar neutrinos and geo-neutrinos, and perform exotic searches. The two experiments both plan to use the liquid scintillator detector with large scale to have huge target mass and with the critical performance of the precise energy resolution. All the design and research progresses of JUNO will be introduced in this talk including detector structure design, high detection efficiency PMT, transparent liquid scintillator, electronics readout, calibration, veto system, etc. The main design of structure of central detector in JUNO is determined and it uses the acrylic sphere with the diameter of 35.4 m to contain the 20 ktons of liquid scintillator. The acrylic sphere is supported by stainless steel latticed shell and the shell also holds about 17000 pieces of 20 inch PMTs and 34000 pieces of 3 inch PMTs with high detection efficiency to detect the light from the liquid scintillator. The liquid scintillator is very transparent with the attenuation length of over 20 meters. The central detector is surrounded by pure water as veto Cherenkov detector and its top is covered by tracker detector composed of plastic scintillator with wavelength shift fiber. There are several calibration methods to be used for the central detector. Also the RENO-50 R&D status will be introduced.
        Speaker: Prof. Yuekun Heng (Institute of High Energy Physics, Beijing)
      • 13:10
        Theoretical motivations for the precision measurement of the oscillation parameters (15' + 5') 20m
        Current neutrino oscillation data strongly suggests specific flavour structures in the lepton sector which can be explained by underlying flavour symmetries. Discrete flavour symmetries have emerged as a powerful tool to realise the observed mixing patterns in which the values of the parameters are uniquely predicted or specific correlations between parameters are obtained. In many models the values of CP violating phase take special values, for instance conserving or maximally-violating values. The precision measurement of mixing angles and the CP violating phase delta will be crucial tasks in the next-generation neutrino oscillation experiments, such as DUNE and T2HK. They will allow to test the flavour models both by constraining the individual parameters and in probing the correlations among them. We consider the current status, comparing the current neutrino oscillation data with typical mixing patterns. We then present the expected sensitivities in the DUNE and T2HK, and JUNO/RENO-50 experiments and how they will provide the opportunity to distinguish different flavour models. We will discuss the guidance for model building that this will provide.
        Speaker: Dr Ye-Ling Zhou (Durham University)
    • 11:30 13:30
      Quark and Lepton Flavor Physics: 2 Superior A

      Superior A

      Convener: Diego Milanes Carreno (Universidad Nacional de Colombia (CO))
      • 11:30
        Dalitz analysis of charmless b-hadron decays at LHCb (10' + 5') 15m
        Charmless b-hadron decays in the Standard Model are characterised by tree amplitudes which are comparable in size to loop amplitudes, and potentially by New Physics amplitudes. CP violation measurements using Dalitz plot analyses in multi-body decays enable the various contributions to be disentangled. We present the most recent measurements in this sector, notably results on $B \to K_s hh$ and $B \to 3h$ decays.
        Speaker: Louis Henry (Paris-LPNHE)
      • 11:45
        Recent results on charmless $B$ and $B_s$ decays from Belle (10' + 5') 15m

        Charmless hadronic B decays constitute a powerful probe to search for new physics beyond the standard model and provide constraints of various CP violation parameters. We report the final measurements from Belle of the branching fraction and CP asymmetry for a variety of charmless decays -- $B^0 \to \pi^0\pi^0$, $B^+ \to K^+ K^- \pi^+$, $B\to \phi \phi K$, and $B^+ \to K_S^0 K_S^0 h^+$ $(h=K,\pi)$ -- as well as a search for the $B^0 \to \eta\eta$ decay. All investigations employ the full dataset at $\Upsilon(4S)$ delivered by the KEKB $e^+ e^-$ collider. The $B^0 \to \pi^0 \pi^0$ measurement enables improved constraints on the CKM unitarity triangle $\phi_2$. For $B^+ \to K^+ K^- \pi^+$ we measure CP asymmetry as a function of the invariant mass of the $K^+ K^-$ system, where LHCb has earlier reported an unexpectedly strong enhancement at low mass. The three-body decays $B^+ \to K_S^0 K_S^0 h^+$ $(h=K,\pi)$ and $B\to \phi \phi K$ both proceed predominantly via flavor-changin!
        g neutral current transitions and hence are sensitive to potential new physics effects. The $B^0 \to \eta\eta$ decays could play an important role in understanding the $B$ decay dynamics and improving the deviation boundary of $\sin 2\phi_1$ measured in $b\to s c\bar{c}$ and $b\to s q\bar{q}$ decays.

        Charmless $B_s$ decays are studied using a data sample of 121 fb−1 collected at the Υ(10860) resonance ($\sqrt{s} = 10.87$ GeV) at Belle. We present the branching fraction of $B_s \to K^0 \bar{K}^0$, which is the first observation of a charmless two-body $B_s$ decays involving only neutral hadrons in the final state. Also presented is the first search for $B_s \to \eta\eta$ decay.

        Speaker: Kamal Jyoti Nath (research scholar)
      • 12:00
        Charmless two-body b-meson decays at LHCb (10' + 5') 15m
        Charmless b-mesons decays receive contributions from penguin diagrams which may exhibit effects of physics beyond the Standard Model. We present the most recent measurements on such decays performed by LHCb, using the full data sample collected during the first run of the LHC. In particular, we present the results of the analyses of B->VV decays (where V indicate a vector particle) including measurements of branching fractions, CP asymmetries, polarisation fractions and T-odd correlations. Moreover, we present CP violation measurements in $B_{d,s} \to h^+h^-$ decays and discuss their implication on the the CKM picture of the Standard Model.
        Speaker: Maria Vieites Diaz (Universidade de Santiago de Compostela (ES))
      • 12:15
        Recent Heavy Flavor results from D0 (10' + 5') 15m
        We report on recent measurements using $B$-meson decays in $10.4\ \rm fb^{−1}$ of proton-antiproton collisions collected by the D0 detector during Run II at the Fermilab Tevatron Collider. We present the first search for exclusive CPT-violating effects in the mixing of $B_s^0$ mesons. We find no evidence for the CPT-violating effects tested and place limits on CPT- and Lorentz-invariance violating coupling coefficients, $\Delta a_\mu$. We also present the first measurement of the direct CP-violating charge asymmetry in $B^\pm$ mesons decaying to $\mu^\pm D^{0} X$ where the $D^0$ decays to $K^+ \pi^-$.
        Speaker: Iain Bertram (Lancaster University (GB))
      • 12:30
        CP violation measurements in B0 to D(*)0_CP h0 decays with BaBar+Belle joint analysis approach (10' + 5') 15m

        Knowledge on the angles of the Unitarity Triangle provides stringent tests on the Standard Model of electroweak interactions and enables one to constrain potential effects of the physics beyond. The parameter $\sin (2\beta) = \sin (2\phi_1)$ has been precisely measured by the B factory experiments BaBar and Belle using $b \to c \bar{c} s$ transitions such as the golden mode $B^0 \to J/\psi K_S^0$. In terms of the angle $\beta = \phi_1$, the value smaller than $\pi/2$ is favored between two possible solutions, however the discrimination is not evident yet at current experimental status. By reconstructing the neutral $D$ meson decays in self-conjugated multi-body final states, a time-dependent Dalitz analysis in $B^0 \to D^{(*)} h^0$ decays provide a theoretically clean probe to constrain $\cos(2\beta) = \cos(2\phi_1)$. We present a time-dependent Dalitz analysis of $B^0 \to D^{(*)} h^0$ decays followed by the $D$ meson decays to $K_S^0 \pi^+ \pi^-$ where the $h^0$ is a $\pi i^0$, $\eta$ or $\omega$ meson. The measurement is performed by combining the final data samples of $471 \times 10^6$ $B\overline{B}$ pairs and $772 \times 10^6$ $B\overline{B}$ pairs recorded by the BaBar and the Belle experiments, respectively.

        Speaker: Markus Roehrken (California Institute of Technology)
      • 12:45
        CP violation in hadronic tau decays (15' + 5') 20m
        The decay $\tau \to 3\pi\nu_\tau$ shows no CP violation in the Standard Model. Therefore it serves as an excellent testing ground for New Physics effects. These effects in rate asymmetries depend on the interference of two helicity amplitudes of the axial vector current decaying to three pions. Motivated by the precise measurements from CLEO, BaBar and Belle, we present an analysis of these amplitudes with unprecedented precision that considers the rescattering between the final state pions. We show how unitarity and analyticity is preserved in our framework. Moreover, this analysis improves the description of the experimental data and is thus very interesting in view of the upcoming measurements at Belle II. The constraints from our results on New Physics models are discussed.
        Speaker: Ina Lorenz (Indiana University)
      • 13:05
        Vus from tau decay data (15' + 5') 20m
        We discuss the results from two determinations of Vus using hadronic tau decay data. In the first, we revisit the determination from flavor-breaking finite-energy sum rules and show that the low Vus values obtained from this approach in the past are the result of a systematic problem associated with assumptions, which can now be shown to be incorrect, about higher dimension OPE contributions on the theory side of the relevant sum rules. Lattice data is used to confirm this analysis and to aid in quantifying the theory errors on the OPE side. Fitting the higher dimension contributions to data leads to Vus in good agreement with that obtained from K_{ell 3} data using lattice input for f_+(0). The second determination results from a novel approach in which sum rules for the sum of the vector and axial vector flavor us polarizations are constructed which relate integrals over the strange hadronic tau decay distributions to lattice values of the underlying polarization sum at intermediate Q^2, where lattice data for the polarization is rather accurate. We compare the results of these determinations to those from K_{ell 3} and Gamma_[K_{mu 2}]/Gamma[pi_{mu 2}].
        Speaker: Kim Maltman (York University)
    • 11:30 13:30
      Top Quark and Electroweak Physics: 2 Huron

      Huron

      Convener: Doreen Wackeroth (SUNY Buffalo)
      • 11:30
        Higher-orders in heavy quark processes within the LTD approach (15' + 5') 20m
        The computation of perturbative corrections to processes involving heavy quarks is crucial for the precision program of LHC and future colliders. In this talk, we describe a powerful method to calculate higher-orders in QCD skipping the traditional subtraction method. Our proposal is based in the loop-tree duality (LTD) theorem, which allows to rewrite virtual contributions in terms of integrals over the real emission phase-space. Then, we proceed to combine both real and virtual parts at integrand level, obtaining regular expressions that can be numerically integrated. In this way, we avoid dealing with complicated massive Feynman integrals and introducing infrared counter-terms. Some reference examples are explained, in order to exhibit the potential of our approach.
        Speaker: German Sborlini (IFIC-Valencia)
      • 11:50
        NLO predictions for SM EFT in the top-quark sector (15' + 5') 20m
        The standard model (SM) effective field theory (EFT) is a powerful approach to the SM deviations, where predictions can be systematically improved in precision. I will discuss some recent progresses and ongoing efforts in developing the SM EFT to next-to-leading order (NLO) accuracy, in particular in the top-quark sector. Based on the MadGraph5_aMC@NLO framework, one can start from an EFT with top-quark operators, and make NLO predictions for various processes, for cross sections as well as distributions, in a fully automatic way. Furthermore, NLO results matched to the parton shower simulation are available, allowing for event generation to be directly employed in an experimental analyses. These works provide a solid basis for the interpretation of current and future measurements in the EFT framework, with improved accuracy and precision. Dedicated investigations of the features of deviations from the SM can be performed based on the presented works, with an expected improvement in sensitivity.
        Speaker: Cen Zhang (Brookhaven National Laboratory)
      • 12:10
        Top properties measurements with the ATLAS detector (15' + 5') 20m
        The top quark is unique among the known quarks in that it decays before it has an opportunity to form hadronic bound states. This makes measurements of its properties particularly interesting as one can access directly the properties of a bare quark. The latest measurements of these properties are presented. Measurements of the charge asymmetry in top-quark pair, which probe models of physics beyond the Standard Model, are presented; these include measurements at high invariant masses of the ttbar system using boosted top quarks. Measurements of the top polarisation produced either through pair process or through single top process are discussed. The helicity of the W boson from the top decays and the production angles of the top quark are further discussed. Limits on the rate of flavour changing neutral currents in the production or decay of the top quark are discussed.
        Speaker: Antonio Limosani (University of Sydney (AU))
      • 12:30
        Top properties measurements with the CMS detector at the LHC (15' + 5') 20m

        Measurements are presented of the properties of top quarks in pair production from proton-proton collisions at the LHC. The data were collected at pp centre-of-mass energies of 7 and 8 TeV by the CMS experiment during the years 2011 and 2012. The charge asymmetry is measured using the difference of the absolute rapidities of the reconstructed top and anti-top kinematics, as well as from distributions of the top quark decay products. The measurements are performed in the decay channels of the ttbar pair into both one and two leptons in the final state. The results, obtained differentially in several kinematic variables of the ttbar-system, are discussed in the context of the forward-backard asymmetry measurements at Tevatron. The polarization of top quarks is measured from the decay angular distributions. Ttbar spin correlation and asymmetries are measured from the angular distributions of the top quark decay products. These measurements are used to search for new physics. TTbar spin correlation is also measured using a matrix element method. Measurements of the associate production of top quark pairs with vector bosons (photons, W and Z) are also presented. The results are compared with standard model predictions.
        Several measurements of top quark properties in top quark decays are presented using data collected by the CMS experiment during the years 2011 and 2012. The polarization of W bosons in top quark decays is measured. The W-boson helicity fractions and angular asymmetries are extracted and limits on anomalous contributions to the Wtb vertex are determined. Furthermore, searches for flavor-changing neutral currents in top quark decays are presented using samples of top-quark pair event candidates decaying via Wb and Zq into lνb and llq events, or decaying via Hq into 3 b-quarks. The flavor contents in top-quark pair events are measured using the fraction of top quarks decaying into a W-boson and a b-quark relative to all top quark decays, R=BR(t->Wb)/Sum(BR(t->Wq)), and the result is used to determine the CKM matrix element Vtb as well as the width of the top quark resonance. The top-quark charge is measured, using the charge correlations between high-pT muons from W boson decays and soft muons from B-hadron decays in b jets. We also report on searches for CP violation effects in ttbar.

        Speaker: Jui-Fa Tsai (National Taiwan University (TW))
      • 12:50
        Measurement of top quark properties in single top production (15' + 5') 20m
        Single top topologies are exploited for studies of top quark properties. This includes the first measurement of single top polarization in the t-channel production mode in pp collisions, which directly confirms the V-A nature of the tWb production vertex. W-helicity fractions are measured in the phase space sampled by a selection optimized for t-channel single top production, orthogonal to the ttbar final states used in traditional measurements of these properties. Anomalous couplings of the top quark are also searched in t-channel single top production with a NN-based analysis.
        Speaker: Abideh Jafari (Universite Catholique de Louvain (UCL) (BE))
      • 13:10
        Measurements of spin correlation, spin polarization, and forward-backward asymmetries in $t\bar t$ -> ttbar events at the Tevatron (D0+CDF) (15' + 5') 20m
        We present recent measurements on top properties obtained in $t\bar t$ events produced in $p\bar p$ collisions at a center-of-mass energy of 1.96 TeV at the Tevatron Collider. We first present a measurement of the spin correlations strength obtained with a matrix element technique applied to dilepton and lepton plus jets final states in $9.7\,$fb$^{-1}$ of data accumulated with the D0 detector. The measured correlation coefficient in the off-diagonal basis is in agreement with the standard model prediction, and represents evidence for a top-antitop spin correlation different from zero at a level of 4.2 standard deviations. Using the same dataset in the lepton plus jets channel, we also discuss a measurement of the top quark polarization in the beam and helicity bases, as well as the first measurement of the transverse polarization at a hadron collider. The combination between D0 polarization measurements in the lepton plus jets and dilepton channels is also presented. We finally discuss the complete overview of the forward-backward asymmetry measurements in the angular distributions in $t\bar t$ events at the Tevatron. These measurements use the full data set accumulated by the Tevatron in lepton plus jets and dilepton channels, in the D0 and CDF detectors. The combinations of the measurements of the $t\bar t$ and leptonic asymmetries are presented and compared with the NNLO QCD predictions.
        Speaker: Andreas Jung (Purdue)
    • 13:30 14:30
      Lunch 1h
    • 14:30 16:30
      Accelerator: Physics, Performance, R&D and Future Facilities: 3 Superior A

      Superior A

      Convener: Katsunobu Oide (High Energy Accelerator Research Organization (JP))
      • 14:30
        Will there be energy frontier colliders after LHC? (15' + 5') 20m
        The future of the world-wide HEP community critically depends on the feasibility of possible post-LHC colliders. The concept of the feasibility is complex and includes at least three factors: feasibility of energy, feasibility of luminosiity and feasibility of cost. The talk will give on overview of all current options for post-LHC colliders from such perspective (ILC, CLIC, Muon Collider, plasma colliders, CEPC, FCC, HE-LHC, etc) and discuss major challenges and accelerator R&D required to claim these machines feasible.
        Speaker: Vladimir Shiltsev (Fermilab)
      • 14:50
        Muon storage for the Muon g-2 Experiment at Fermilab (15' + 5') 20m
        The muon storage ring for the g-2 experiment at Fermilab poses optimization challenges that couple directly to the statistical and systematic uncertainties of the measurement. The statistical uncertainty in the Muon g-2 Experiment at Fermilab is coupled to the number of measured positrons emitted by muons stored in a weak-focusing magnetic storage ring. The frequency that the ring is filled and the number of muons stored per fill determine the running time to achieve the experimental precision goal of 20 times the data obtained in BNL E821. Coherent betatron oscillation can introduce effects that must be controlled in the extraction of the muon spin precession frequency. Optimizing muon storage involves matching the final leg of the beamline with the storage ring acceptance, subject to very restrictive physical apertures. The storage ring is anchored by a 7.11 m radius superconducting magnet with a highly uniform 1.45 T vertical magnetic. Additional components include four sets of electrostatic quadrupoles that provide vertical focusing, a series of collimators that define the allowed storage volume, a superconducting inflector magnet that provides a near field-free corridor though which the muons enter the magnet, and a fast magnetic kicker that places the incoming muons on orbit. In practice, relatively pure 120-ns-long bunches of 3.094 GeV/$c$ polarized muons are injected through a hole in the back yoke of the C-shaped magnet, next through the inflector, which has a very narrow constriction, then into the ring. One quarter of the way around the first turn, the kicker imparts a $\sim11$ mrad outward deflection to the bunch. After a scraping scheme using the quadrupoles and collimators, muons orbit within a 9-cm circular aperture until they decay. We have used a variety of models to establish the expected storage rate and to demonstrate how tuning parameters affects this rate and the behavior of the stored beam. Instrumentation to provide feedback on rates and profiles of the beam at various locations has been developed. This talk will describe our expected muon storage rates, which exceed that obtained at BNL, as well as our studies of the stored beam dynamics.
        Speaker: Vladimir Tishchenko (BNL)
      • 15:10
        Advanced Controls for Particle Accelerators (15' + 5') 20m
        Particle accelerators are host to myriad nonlinear and complex physical phenomena, involve a multitude of interacting systems, are subject to tight performance demands, and should be able to run for extended periods of time with minimal interruption. Machine learning and artificial intelligence constitute a versatile set of techniques that are particularly well-suited to modeling, control, and diagnostic analysis of complex, nonlinear, and time-varying systems, as well as systems with large parameter spaces. Consequently, the use of adaptive, machine learning-based modeling and control techniques could be of significant benefit to particle accelerators and the scientific endeavors that they support. Here, we discuss our efforts to develop and deploy machine learning-based tools specifically to address control challenges found in particle accelerators, with a focus on neural networks.
        Speaker: Auralee Edelen (Colorado State University)
      • 15:30
        Superconducting technology for future HEP particle accelerators: opportunities and challenges (15' + 5') 20m
        Superconducting magnets and radio frequency cavities are cornerstone technologies for future high energy particle accelerators. In this talk I will briefly discuss state of the art of these two technologies, outline how they enable future generation of accelerators for particle physics and discuss challenges.
        Speaker: Sergey Belomestnykh (Fermilab)
      • 15:50
        Recomissioning and Perspectives of VEPP-2000 e+e- Collider (15' + 5') 20m
        VEPP-2000 is electron-positron collider exploiting the novel concept of round colliding beams. After three seasons of data taking in the whole energy range of 160-1000 MeV per beam it was stopped in 2013 for injection chain upgrade. The linking to the new BINP source of intensive beams together with booster synchrotron modernization provides the drastic luminosity gain at top energy of VEPP-2000.
        Speaker: Dmitry Shwartz (BINP)
      • 16:10
        Performance and Perspective of Beijing Electron Positron Collider (15' + 5') 20m
        The Beijing Electron Positron Collider (BEPC) was upgraded as a double-ring factory-like charm-tau collider (BEPCII) with the design luminosity of 1*10^{33}cm^{-2}s^{-1} at 1.89 GeV. Being finished construction and passed the national test and check in 2009, the BEPCII has been operated for high energy physics studies for more than 6 years. The luminosity at the design energy has been steadily enhanced, and its performance was also optimized at various energies the HEP required. A lot of important HEP results, such as the observation of Zc(3900) was done at the BEPCII under its excellent performance. In the meanwhile, the collider is also served as a synchrotron radiation facility with 5 insertion devices for extracting beam lines to synchrotron light users during the past years. Status of the machine and beam performance are described in this talk. Various accelerator physics and technology results and developments have been obtained in the year of BEPCII. The future plan is also discussed in this talk.
        Speaker: Prof. QING QIN (IHEP)
    • 14:30 16:30
      Astro-particle Physics and Cosmology: Gamma Ray Astrophysics Chicago 10

      Chicago 10

      Convener: Karen Byrum (Argonne National Lab)
      • 14:30
        VERITAS Observations of the Galactic Center (15' + 5') 20m
        Weakly-interacting massive particles (WIMPS) are among the wide range of candidates for the dark matter (DM) that dominates the mass content of the universe. In some scenarios these WIMPs are self-annihilating. In regions of high dark matter density (such as our own Galactic Center) this self-annihilation is expected to produce a characteristic gamma-ray radiation signature that cuts off at the WIMP mass. Observations of these regions of high dark matter density with very-high-energy (VHE) gamma-ray telescopes can constrain a unique phase space of heavy WIMP masses. However, in the case of the Galactic Center gamma-ray emission arising from more conventional astrophysical sources complicates the interpretation of such observations. We provide an update on deep observations of the Galactic Center with VERITAS, an array of atmospheric Cherenkov telescopes sensitive to VHE gamma rays with energies between 85 GeV and 30 TeV.
        Speaker: Amanda Weinstein (Iowa State University)
      • 14:50
        Multimessenger studies with the VERITAS Atmospheric Cherenkov Telescope (15' + 5') 20m
        Multimessenger astronomy is an emerging area of study in high-energy astrophysics aimed at combining observations from instruments sensitive to different “cosmic messengers”; neutrinos, photons, cosmic rays, and potentially gravitational waves. The VERITAS gamma-ray observatory has an active multimessenger program, currently focused on studying the connection between very high energy gamma-rays and the astrophysical neutrino flux recently discovered by IceCube. As both gamma-rays and neutrinos are produced in hadronic interactions, it is expected that a joint study of both messenger channels could reveal powerful cosmic-ray accelerators and probe their properties. We present an overview and recent results from the VERITAS multimessenger program and discuss prospects for combined studies with other multimessenger facilities, such as the aLIGO gravitational wave observatory, that could benefit from the synergy between the VERITAS, HAWC, and Fermi gamma-ray instruments.
        Speaker: Marcos Santander (Barnard College, Columbia University)
      • 15:10
        Measurement of the Cosmic-ray Electron Spectrum with VERITAS (15' + 5') 20m
        Cosmic-ray electrons and positrons (CREs) at GeV-TeV energies are a unique probe of our local Galactic neighbourhood. CREs lose energy rapidly via inverse Compton scattering and synchrotron processes while propagating in the Galaxy, effectively placing a maximal propagation distance for TeV electrons of order $\sim$1 kpc. Within this window, production of CREs can come from a handful of known, nearby astrophysical sources capable of exciting CREs to that energy or from more exotic production mechanisms, like particle dark matter. VERITAS is an array of four imaging atmospheric Cherenkov telescopes in southern Arizona and is one of the world's most sensitive detectors of very high energy (VHE: >100 GeV) gamma rays and cosmic rays. In this presentation, we'll discuss the VERITAS measurement of an electron plus positron cosmic ray spectrum to TeV energies.
        Speaker: David Staszak (University of Chicago)
      • 15:30
        Observation of Galactic Cosmic Rays and Gamma Rays with the High Altitude Water Cherenkov Observatory (15' + 5') 20m
        The High-Altitude Water Cherenkov Observatory, or HAWC, is carrying out an unbiased survey of cosmic rays and gamma rays from the Northern Hemisphere between 100 GeV and 100 TeV. HAWC is currently the only high-uptime wide-field TeV observatory in operation, and has a robust program to search for flares and other transient sources of gamma rays. The detector is also well suited to observe spatially extended regions of gamma-ray emission and cosmic-ray anisotropy. HAWC recently concluded its first year of data taking with the complete detector. The results include not only observations of many known TeV point sources, but also extended emission from Galactic objects like the Geminga supernova remnant. These results have implications for the origins of several astrophysical anomalies observed in the cosmic-ray data, such as the excess of Galactic positrons at Earth. We will describe results from HAWC with a focus on the observation of cosmic rays and Galactic sources of gamma rays.
        Speaker: Segev BenZvi (University of Rochester)
      • 15:50
        Searches for Dark Matter and Primordial Black Holes with the High Altitude Water Cherenkov (HAWC) Gamma-ray Observatory (15' + 5') 20m
        The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a continuously operated, wide field-of-view (FOV) observatory sensitive to 100 GeV – 100 TeV gamma rays and cosmic rays. HAWC has been making observations since summer 2012 and officially commenced data-taking operations with the completed detector on March 20, 2015. With an instantaneous FOV of 2 steradians, HAWC observes 2/3 of the sky in 24 hours and can be used to search for astrophysical signatures of dark matter (DM) and primordial black holes (PBHs). In particular, HAWC should be the most sensitive experiment to signals coming from annihilation or decay of dark matter with masses greater than 10-100 TeV. I will present the HAWC sensitivity and current limits to dark matter signals from several likely sources of these signals, including dwarf spheroidal galaxies, galaxy clusters, emission from the center of the Milky Way, and from non-luminous dark matter subhalos. I will also show HAWC's sensitivity and current limits on evaporating PBHs.
        Speaker: Kirsten Anne Tollefson (Michigan State University (US))
      • 16:10
        Fundamental physics with the Cherenkov Telescope Array (15' + 5') 20m
        The Cherenkov Telescope Array (CTA) is a next-generation array of atmospheric Cherenkov telescopes that will feature an order of magnitude improved sensitivity compared to the previous generation of instruments. Building on the success of H.E.S.S., MAGIC, and VERITAS in a complementary energy range to Fermi, CTA will investigate the particle physics of the cosmos through observations of gamma rays between tens of GeV and several hundred TeV. By observing the inner Galaxy, dwarf galaxies, and other targets rich in dark matter, CTA will detect signatures of WIMP annihilations in situ in the universe or provide strong constraints on their annihilation cross section for WIMP masses ranging from below 100 GeV to above 10 TeV, including a mass range inaccessible with other methods. CTA will also detect or constrain the nature of axion-like particles and test Lorentz invariance violation over a large energy range. Finally, CTA’s measurements of the energy spectrum and possible anisotropy of cosmic-ray electrons and positrons will provide important constraints on the excess positron signal that could be connected to dark matter .
        Speaker: Prof. Justin Vandenbroucke (University of Wisconsin)
    • 14:30 16:30
      Beyond the Standard Model: 3 Chicago 7

      Chicago 7

      Convener: Kiwoon Choi (KAIST)
      • 14:30
        Supersymmetry versus Extra Dimensions at the LHC (15' + 5') 20m
        Non-minimal universal extra dimensions (nmUED) involve the choice of boundary localized kinetic terms (BLKT) for the 5 dimensional gauge bosons and fermions. We find that with suitable choice of these parameters needed to explain the current Higgs data, the BLK terms removes the approximate degeneracy of the KK mass spectrum, and the pair productions of the level-1 quarks and gluons give rise to hard jets, leptons and large missing energy. Thus the LHC will not be able to distinguish between the supersymmetry and extra dimensions, and the production of the 2nd KK excitation will be the key for such a distinction.
        Speaker: Prof. Satyanarayan Nandi (Oklahoma State University)
      • 14:50
        Search for supersymmetry with diphotons in pp collisions at 13 TeV with CMS (15' + 5') 20m

        We present a search for supersymmetry in diphoton plus jets plus missing transverse energy final states. The analysis uses data collected with the CMS detector at a center-of-mass energy of 13 TeV.

        Speaker: Si Xie (California Institute of Technology (US))
      • 15:10
        Searches for SUSY in photons and tau channels with the ATLAS detector (15' + 5') 20m
        The talk presents searches for the prompt decay of supersymmetric particles in events containing photons or taus and large transverse missing momentum, performed by the ATLAS experiment. The final states considered are particularly motivated in gauge mediated supersymmetry breaking models with a light gravitino as the lightest supersymmetric particle. The increase in the center-of-mass energy of the proton-proton collisions gives a unique opportunity to extend the sensitivity to production of supersymmetric particles at the Large Hadron Collider. Results obtained with pp collisions at sqrt(s) = 13 TeV are presented.
        Speaker: Bruce Andrew Schumm (University of California,Santa Cruz (US))
      • 15:30
        Imposing LHC constraints on the combined Anomaly and $Z^\prime$ Mediation Mechanism of Supersymmetry Breaking (15' + 5') 20m
        Combining anomaly with $Z^\prime$ mediation allows us to solve the tachyonic problem of the former and avoid fine tuning in the latter. This model includes an extra $U(1)^\prime$ gauge symmetry and extra singlet scalar $S$ which provides a solution to the `$\mu$ problem' of the MSSM. The low-energy particle spectrum is calculated from the UV inputs using the Renormalization Group Equations. The benchmark points considered in the original model, suggested before the Higgs discovery, predicted a Higgs mass close to the current measured value of 125 $\mathrm{GeV}$. We use the current LHC data to update the predictions of the model, its particle spectrum and in particular the mass of the $Z^\prime$ gauge boson.
        Speaker: Joydeep Roy (Wayne State University)
      • 15:50
        Naturalizing Supersymmetry with a Two-Field Relaxion Mechanism (15' + 5') 20m
        We present a supersymmetric version of a two-field relaxion model that natu- ralizes tuned versions of supersymmetry. This arises from a relaxion mechanism that does not depend on QCD dynamics and where the relaxion potential barrier height is controlled by a second axion-like eld. During the cosmological evolution, this allows the relaxion to roll with a nonzero value that breaks supersymmetry and scans the soft supersymmetric mass terms. Electroweak symmetry is broken after the soft masses become of order the supersymmetric mass scale, causing the relaxion to stop rolling at values corresponding to superpartner mass scales up to ~10^9 GeV. This helps to explain the tuning in supersymmetric models, including split-SUSY models at the PeV scale, while preserving the QCD axion solution to the strong CP problem. Besides predicting two very weakly-coupled axion-like par- ticles, the supersymmetric spectrum contains an extra Goldstino, which could be a viable dark matter candidate.
        Speaker: Prof. Jason Evans (Korean Institute for Advanced Study)
      • 16:10
        Searches for R-Parity violating SUSY with the ATLAS detector (15' + 5') 20m
        The violation of R-parity allows new signatures to be pursued in the search for supersymmetry at the LHC. This talk presents the latest results from the ATLAS experiment on searches for R-parity vilating SUSY using data from pp collisions at a centre-of-mass energy of 13 TeV. The results presented are for dedicated searches for resonances, as well as a systematic analysis of the constraints placed on R-parity violating models.
        Speaker: Suen Hou (Academia Sinica (TW))
    • 14:30 16:30
      Computing: Infrastructure Huron

      Huron

      Convener: Elizabeth Sexton-Kennedy (Fermi National Accelerator Lab. (US))
      • 14:30
        Data Acquisition with GPUs: The DAQ for the Fermilab Muon g-2 Experiment (15' + 5') 20m
        Graphical Processing Units (GPUs) have have recently become a valuable computing tool for the acquisition of data at high rates and for a relatively low cost. The devices work by parallelizing the code into thousands of threads, each executing a simple process, such as identifying pulses from a waveform digitizer. The cuda programming library can be used to effectively write code to parallelize such tasks on Nvidia GPUs, providing a significant upgrade in performance over CPU based acquisition systems. The muon $g$-$2$ experiment at Fermilab is heavily relying on GPUs to process it's data. The data acquisition system for this experiment must have the ability to create deadtime-free records from 700 $\mu$s muon spills at a raw data rate 18 GB per second. Data will be collected using 1296 channels of $\mu$TCA-based 800 MSPS, 12 bit waveform digitizers and processed in a layered array of networked commodity processors with 24 GPUs working in parallel to perform a fast recording of the muon decays during the spill. The described data acquisition system is currently being constructed, and will be fully operational before the start of the experiment in 2017.
        Speaker: Wesley Gohn (University of Kentucky)
      • 14:50
        Fermilab HEP Cloud: an elastic computing facility for High Energy Physics. (15' + 5') 20m
        The need for computing in the HEP community follows cycles of peaks and valleys mainly driven by holiday schedules, conference dates and other factors. Because of this, the classical method of provisioning these resources at providing facilities has drawbacks such as potential overprovisioning. As the appetite for computing increases, however, so does the need to maximize cost efficiency by developing a model for dynamically provisioning resources only when needed. To address this issue, the HEP Cloud project was launched by the Fermilab Scientific Computing Division in June 2015. Its goal is to develop a facility that provides a common interface to a variety of resources, including local clusters, grids, high performance computers, and community and commercial clouds. Initially targeted communities include CMS and NOvA, as well as other Fermilab stakeholders. In its first phase, the project has demonstrated the use of the “elastic” provisioning model offered by commercial clouds, such as Amazon Web Services. In this model, resources are rented and provisioned automatically over the Internet upon request. In January 2016, the project demonstrated the ability to increase the total amount of global CMS resources by 58,000 cores from 150,000 cores - a 25 percent increase. This burst of resources was used in preparation for the Recontres de Moriond conference to generate and reconstruct Monte Carlo events. At the same time, the NOvA experiment has also run data-intensive computations through HEP Cloud, readily provisioning 1,500 cores on Amazon to process reconstructed detector data. NOvA is using the same familiar services they use for local computations such as data handling and job submission. In both cases, the cost was contained by the use of the Amazon Spot Instance Market, a rental model that allows Amazon to sell their overprovisioned capacity at a fraction of the regular price. This paper describes the Fermilab HEP Cloud Facility and the challenges overcome for all targeted communities.
        Speaker: Burt Holzman (Fermi National Accelerator Lab. (US))
      • 15:10
        The FIFE Project at Fermilab: Computing for Experiments (15' + 5') 20m
        The FabrIc for Frontier Experiments (FIFE) project is an initiative within the Fermilab Scientific Computing Division designed to steer the computing model for non-LHC Fermilab experiments across multiple physics areas. FIFE is a collaborative effort between experimenters and computing professionals to design and develop integrated computing models for experiments of varying size, needs, and infrastructure. The major focus of the FIFE project is the development, deployment, and integration of solutions for high throughput computing, data management, database access and collaboration management within an experiment. To accomplish this goal, FIFE has developed workflows that utilize Open Science Grid compute sites along with dedicated and commercial cloud resources. The FIFE project has made significant progress integrating into experiment computing operations several services including a common job submission service, software and reference data distribution through CVMFS repositories, flexible and robust data transfer clients, and access to opportunistic resources on the Open Science Grid. The progress with current experiments and plans for expansion with additional projects will be discussed. FIFE has taken the leading role in defining the computing model for Fermilab experiments, aided in the design of experiments beyond those hosted at Fermilab, and will continue to define the future direction of high throughput computing for future physics experiments worldwide.
        Speaker: Dr Kenneth Richard Herner (Fermi National Accelerator Laboratory (US))
      • 15:30
        GeantV: from CPU to accelerators (15' + 5') 20m
        The GeantV project aims to research and develop the next generation simulation software describing the passage of particles through matter, targeting not only modern CPU architectures, but also more exotic resources such as GPGPU, Intel© Xeon Phi, Atom or ARM, which cannot be ignored any more for HEP computing. While the proof of concept GeantV prototype has been mainly engineered for CPU threads, we have foreseen from early stages a bridge for such accelerators, materialized in the form of architecture/technology specific backend templates. This approach allows to abstract out not only basic types such as scalar/vector, but also to formalize generic computation kernels using transparently library or device specific constructs based on several industry leading libraries. While the main goal of this approach is performance and access to functionality, this comes as bonus with the insulation of the core application and algorithms from the technology layer, allowing our application to be long term maintainable and versatile to changes at the backend side. The talk will present the early results of basket-based GeantV geometry navigation on the Intel© Xeon and Intel© Xeon Phi KNC architecture, as well as the work done for making the transport NUMA aware. We will present a detailed scalability and vectorization study conducted using Intel performance tools, as well as our preliminary conclusions on the use of accelerators for GeantV transport. We will also describe the current work and preliminary results for using the GeantV transport kernel on GPUs..
        Speaker: Philippe Canal (Fermi National Accelerator Lab. (US))
      • 15:50
        Developments in Architectures and Services for using High Performance Computing in Energy Frontier Experiments (25' + 5') 30m

        The integration of HPC resources into the standard computing toolkit of HEP experiments is becoming important as traditional resources are being outpaced by the needs of the experiments. We will describe solutions that address some of the difficulty in running data-intensive pipelines on HPC systems. Users of NERSC HPCs are benefiting from a newly developed package called "Shifter" that creates docker-like images and the deployment of the new "Burst Buffers" NVRAM file system designed to offer extreme I/O performance, supporting terabyte-per-second bandwidth and 10s of millions of IO operations per second. These tools have enabled particle physicists from multiple experiments routinely run their entire multi-TB sized CVMFS software stacks across tens of thousands of compute cores. In addition, an Edge Service has been developed to provide a uniform interface for HEP job management systems to access supercomputer sites. It is based on the Python Django framework and is composed of two processes, of which one runs inside the supercomputing environment and one runs outside. It has been used to run over 100 million core-hours of LHC experiment jobs on the Mira supercomputer at the Argonne Leadership Computing Facility and on the Edison supercomputer at NERSC for LHC experiments.

        Speakers: Lisa Gerhardt (LBNL), Taylor Childers (Argonne National Laboratory (US))
    • 14:30 16:30
      Dark Matter Detection: 1 Chicago 9

      Chicago 9

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Convener: Young-Im Kim (Institute for Basic Science)
      • 14:30
        IAXO, next-generation of helioscopes (15' + 5') 20m
        The International Axion Observatory (IAXO) is a proposed next-generation axion helioscope with the primary physics research goal to search for solar axions via their Primakoff conversion into photons in a strong magnetic field. IAXO consists of a 20 m long superconducting 8-coil toroidal magnet optimized for axion research. Each one of the eight 60-cm-diameter magnet bores is equipped with state-of-the-art x-ray optics and low-background x-ray detectors. The magnet is built into a structure with elevation and azimuth drives that allow for daily solar tracking. IAXO will achieve a sensitivity to the axion-photon coupling gaγγ down to a few 10-12 GeV-1 for a wide range of axion masses up to ~0.25 eV. This is an improvement over the currently best axion helioscope, the CERN Axion Solar Telescope (CAST), of about 5 orders of magnitude in signal strength.
        Speakers: Dr Jaime Ruz Armendariz (LLNL), Maurizio Giannotti (Barry University), Dr Maurizio Giannotti
      • 14:50
        CULTASK, the Coldest Axion Experiment at CAPP/IBS in Korea (15' + 5') 20m
        The axion is an excellent dark matter candidate motivated by the Peccei-Quinn solution to the strong-CP problem. The IBS Center for Axion and Precision Physics Research (CAPP) in Korea will explore the dark matter axion using a method suggested by P. Sikivie, converting axions into microwave photons in a resonant cavity permeated by a strong magnetic field. CAPP’s first microwave axion experiment, CULTASK (CAPP’s Ultra Low Temperature Axion Search in Korea) is being launched at KAIST (Korea Advanced Institute of Science and Technology) campus this spring utilizing top of the line equipment and technology. I will outline many R&D efforts that are currently being undertaken to make the axion search range broader and the sensitivity greater. I will also discuss the results from the recent engineering runs and future plans of the axion experiment.
        Speaker: Dr Chung Woohyun (CAPP/IBS)
      • 15:10
        ADMX Status (30' + 10') 40m
        Nearly all astrophysical and cosmological data point convincingly to a large component of cold dark matter (CDM) in the Universe. The axion particle, first theorized as a solution to the strong charge-parity problem of quantum chromodynamics, has been established as a prominent CDM candidate. Cosmic observation and particle physics experiments have bracketed the unknown mass of CDM axions between approximately a μeV and a meV. The Axion Dark Matter eXperiement (ADMX) is a direct-detection CDM axion search which has set limits at the KSVZ coupling of the axion to two photons for axion masses between 1.9 and 3.7 μeV. The current upgrades will allow ADMX to detect axions with even the most pessimistic couplings in this mass range. In order to expand the mass reach of the detector, ADMX is conducting extensive research and development of microwave cavity technology. Status of the experiment, current research, and projected results will be presented. This work was supported in part by the Department of Energy under grant DE-SC0010280.
        Speaker: Ian Stern (University of Florida)
      • 15:50
        Single Microwave Photon Detectors for ADMX (15' + 5') 20m
        High quantum efficiency, qubit-based single microwave photon detectors are being developed for the Axion Dark Matter eXperiment (ADMX). This cross-disciplinary research aims to transfer the already mature qubit readout technology used in quantum computing and bring it to bear on particle physics applications. Because dark noise from thermal photons is exponentially suppressed in low temperature operation, the effective noise power of these photon counting detectors can be orders of magnitude below that of the quantum-limited linear amplifiers presently used in axion searches. The resulting improvement in the signal-to-noise ratio will enable future searches for dark matter axions at higher mass.
        Speaker: Dr Aaron Chou (Fermilab)
      • 16:10
        Status of the ADMX-HF Dark Matter Axion Search (15' + 5') 20m
        Axions are a leading dark matter candidate, and may be detected by their resonant conversion to a monochromatic RF signal in a tunable microwave cavity permeated by a strong magnetic field. The Axion Dark Matter eXperiment – High Frequency (ADMX-HF) serves both as a innovation platform for cavity and amplifier technologies for the microwave cavity axion experiment, and as a pathfinder for a first look at data in the 20 – 100 μeV (~ 4 – 25 GHz) range. A collaboration of Yale University, where the experiment is sited, the University of California Berkeley, Colorado University, and Lawrence Livermore National Laboratory, ADMX-HF is a small but highly capable platform where advanced concepts can be developed and vetted in an operational environment. The experiment is built on a superconducting solenoidal magnet (9 T, 17.5 cm ∅ x 40 cm) of high field uniformity, and a dilution refrigerator capable of cooling the cavity and amplifier to 25 mK. In its initial configuration, the microwave cavity is made of high purity electroformed copper, tunable between 3.6 – 5.8 GHz. The cavity is coupled to a Josephson Parametric Amplifier; JPAs are ideally suited for the 5 GHz range, being broadly tunable and exhibiting near-quantum-limited noise temperature. Construction of the experiment was completed in 2015, and has embarked on a first data run in January 2016. Technologies to be deployed in the near future include a squeezed-vacuum state receiver, superconducting thin-film cavities, and photonic band-gap resonators. This work was supported under the auspices of the National Science Foundation, under grants PHY-1067242 and PHY-1306729, the Heising-Simons Foundation under grant 2014-182, and the U.S. Department of Energy by Lawrence Livermore National Security, LLC, Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.
        Speaker: Maria Simanovskaia (University of California, Berkeley)
    • 14:30 16:30
      Detector: R&D and Performance: Trigger/DAQ Chicago 8

      Chicago 8

      Convener: Kenji Inami (Nagoya university)
      • 14:30
        The ATLAS Dataflow system in Run-2: Design and Performance (12' + 3') 15m
        The ATLAS detector uses a real time selective triggering system to reduce the high interaction rate from 40 MHz to its data storage capacity of 1 kHz. A hardware first level trigger limits the rate to 100 kHz and a software high level trigger selects events for offline analysis. By building on the experience gained during the successful first run of the LHC, the ATLAS Trigger and Data Acquisition system has been simplified and upgraded to take advantage of state of the art technologies. The Dataflow element of the system is composed of distributed hardware and software responsible for buffering and transporting event data from the Readout system to the High Level Trigger and to the event storage. This system has been reshaped in order to maximize the flexibility and efficiency of the data selection process. The updated dataflow is different from the previous implementation both in terms of architecture and performance. The biggest difference is within the high level trigger, where the merger of region-of-interest based selection with event building and filtering into a single process allows incremental data collection and analysis. The previous structure of the commodity server farm running the high level trigger algorithms, previously subdivided with each slice managed by a dedicated supervisor, has been dropped in favor of global management by a single farm master operating at 100 kHz referred to as the high level trigger supervisor. The Region of Interest Builder previously implemented on a VMEbus system is now integrated with this supervisor, with the region of interest building done in software. The Data Collection network that connects the high level trigger processing nodes to the Readout and the storage systems has evolved to a single Ethernet network and the Readout PCs have been directly connected to it. The aggregate throughput and port density have been increased by an order of magnitude with the introduction of advanced network routing and significantly enhanced fault tolerance and redundancy. The overall design of the system will be presented, along with performance results from the start up phase of LHC Run-2.
        Speaker: Othmane Rifki (University of Oklahoma (US))
      • 14:45
        The Fast Interaction Trigger Upgrade for ALICE (12' + 3') 15m
        The ALICE Collaboration is preparing a major detector upgrade for the second LHC long shutdown (2019-20). The LHC heavy-ion luminosity and collision rate from 2021 onwards will considerably exceed the design parameters of the present ALICE forward trigger detectors. Furthermore, the introduction of a new Muon Forward Tracker will significantly reduce the space available for the upgraded trigger detectors. To comply with these conditions a Fast Interaction Trigger (FIT) has been designed. FIT will be the primary forward trigger, luminosity, and collision time measurement detector. The FIT will be capable of triggering at an interaction rate of 50 kHz, with a time resolution better than 30 ps, with 99% efficiency. It will also determine multiplicity, centrality, and reaction plane. FIT will consist of two arrays of Cherenkov radiators with MCP-PMT sensors and of a scintillator ring. The arrays will be placed on the opposite sides of the interaction point (IP). Because of the presence of the hadron absorber of the muon spectrometer, the placement of the FIT arrays will be asymmetric: about 800 mm from IP on the absorber side and 3200 mm from IP on the opposite side. Scheduled for installation in 2020, FIT is in the midst of an intense R&D and prototyping period. The timing, amplitude and efficiency characteristics are determined with relativistic particles and with lasers. The ongoing Monte Carlo studies verify the physics performance and refine the geometry of the FIT arrays. The presentation will give a short description of FIT, a summary of the performance, and the outcome of the simulations and beam tests. This material is based upon work supported by the National Science Foundation under grant NSF-PHY-1305280.
        Speaker: Prof. Edmundo Garcia-Solis (Chicago State University (US))
      • 15:00
        The CMS Level-1 Trigger for LHC Run II (12' + 3') 15m
        The Compact Muon Solenoid (CMS) experiment has implemented a sophisticated two-level online selection system that achieves a rejection factor of nearly 10e5. During Run II, the LHC will increase its centre-of-mass energy up to 13 TeV and progressively reach an instantaneous luminosity of 2e34cm-2s-1. In order to guarantee a successful and ambitious physics programme under this intense environment, the CMS Trigger and Data acquisition (DAQ) system has been upgraded. The upgraded CMS L1 trigger is designed to improve the performance at high luminosity and large number of simultaneous inelastic collisions per crossing (pile-up). During the technical stop at the beginning of 2016, all the electronic boards of the CMS L1 trigger have been replaced, tested, and commissioned with data. The L1 calorimeter trigger hardware and architecture have been redesigned to maintain the current thresholds for electrons and photons in these more challenging conditions. This design benefits from recent microTCA technology, allowing sophisticated algorithms to be deployed, better exploiting the calorimeter granularity and opening the possibility of making correlations between different parts of the detector. The new Level-1 Calorimeter Trigger uses a novel Time Multiplexed Trigger which allows the L1 trigger a global view of the entire event with higher granularity. Smarter, more complex, and innovative algorithms are now the core of the first decision layer of CMS: the upgraded trigger system implements pattern recognition and MVA (Boosted Decision Tree) regression techniques in the trigger boards for $\text{p}_{\text{T}}$ assignment, pile up subtraction, and isolation requirements for muons, electrons, and taus. In addition, the new global trigger is capable of evaluating complex selection algorithms such as those involving the invariant mass of trigger primitives. All the above is drastically reducing the trigger rate and improving the trigger efficiency for a wide variety of physics signals. In this presentation the upgraded CMS L1 trigger design and its performance are described. The impact of the improved selection criteria on benchmark physics channels such as Higgs and Supersymmetry will be presented as well in this talk.
        Speaker: Alex Tapper (Imperial College Sci., Tech. & Med. (GB))
      • 15:15
        A level-1 pixel based track trigger for the CMS upgrade (12' + 3') 15m
        We present feasibility studies to investigate the performances and interest of a Level-1 trigger based on pixels. The Level-1 (real-time) pixel based tracking trigger is a novel trigger system that is based on the real-time track reconstruction algorithms able to cope with very high rates and high flux of data in a very harsh environment. The pixel detector has an especially crucial role in precisely identifying the primary vertex of the rare physics events from the large pile-up (PU) of events. The goal of adding the pixel information already at the real-time level of the selection is to help reducing the total level-1 trigger rate while keeping an high selection capability. This is quite an innovative and challenging objective for the experiments upgrade for the High Luminosity LHC (HL-LHC).
        Speaker: Chang-Seong Moon (UNESP - Universidade Estadual Paulista (BR))
      • 15:30
        The ATLAS Run-2 Trigger: Design, Menu, Performance and Operational Aspects (12' + 3') 15m
        The LHC, at design capacity, has a bunch-crossing rate of 40 MHz whereas the ATLAS experiment has an average recording rate of about 1000 Hz. To reduce the rate of events but still maintain high efficiency of selecting rare events such as physics signals beyond the Standard Model, a two-level trigger system is used in ATLAS. Events are selected based on physics signatures such as presence of energetic leptons, photons, jets or large missing energy. Despite the limited time available for processing collision events, the trigger system is able to exploit topological informations, as well as using multi-variate methods. In total, the ATLAS trigger systems consists of thousands of different individual triggers. The ATLAS trigger menu specifies which triggers are used during data taking and how much rate a given trigger is allocated. This menu reflects not only the physics goals of the collaboration but also takes into consideration the instantaneous luminosity of the LHC and the design limits of the ATLAS detector and offline processing Tier0 farm. We describe the criteria for designing the ATLAS trigger menu used for the LHC Run 2 period. Furthermore, we discuss how the trigger menu is deployed online, through different phases: validation before being used online, decision on prescale values for different triggers (ahead of running, or online in case of sudden rate changes), and monitoring during data taking itself. The performance of the high-level trigger algorithms used to identify leptons, hadrons and global event quantities which are crucial for event selection relevant to wide range of physics analyses is presented at hand of a few examples.
        Speaker: Joana Machado Miguens (University of Pennsylvania (US))
      • 15:45
        Overview of the ATLAS Fast Tracker Project (12' + 3') 15m
        The next LHC runs, with a significant increase in instantaneous luminosity, will provide a big challenge for the trigger and data acquisition systems of all the experiments. An intensive use of the tracking information at the trigger level will be important to keep high efficiency for interesting events despite the increase in multiple collisions per bunch crossing. In order to increase the use of tracks within the High Level Trigger, the ATLAS experiment planned the installation of a hardware processor dedicated to tracking: the Fast TracKer processor. The Fast Tracker is designed to perform full scan track reconstruction of every event accepted by the ATLAS first level hardware trigger. To achieve this goal the system uses a parallel architecture, with algorithms designed to exploit the computing power of custom Associative Memory chips, and modern field programmable gate arrays. The processor will provide computing power to reconstruct tracks with transverse momentum greater than 1 GeV in the whole tracking volume. The tracks will be available at the begin of the trigger selections, allowing to develop new more pileup resilient triggering strategies as well as allow for entirely new ones. The Fast Tracker system will be massive, with about 8000 Associative Memory chips and 2000 field programmable gate arrays, providing full tracking with a rate up to 100 KHz and an average latency below 100 microseconds. The system will begin the commissioning in 2016, with a full barrel coverage reached by the end of the year. The final version of the electronic boards is presented, reporting on the commissioning status as well as the first data-taking experience. An overview of the Fast Tracker processor is presented, reporting the design of the system, the expected performance from simulation studies and the status of the latest hardware prototypes.
        Speaker: Lucian Stefan Ancu (Universite de Geneve (CH))
      • 16:00
        The Upgrade of the ATLAS Electron and Photon Triggers for LHC Run 2 and their Performance (12' + 3') 15m
        Electron and photon triggers covering transverse energies from 5 GeV to several TeV are essential for signal selection in a wide variety of ATLAS physics analyses to study Standard Model processes and to search for new phenomena. Final states including leptons and photons had, for example, an important role in the discovery and measurement of the Higgs particle. Dedicated triggers are also used to collect data for calibration, efficiency and fake rate measurements. The ATLAS trigger system is divided in a hardware-based Level 1 and a software based high level trigger, both of which were upgraded during the long shutdown of the LHC in preparation for data taking in 2015. The increasing luminosity and more challenging pile-up conditions as well as the planned higher center-of-mass energy demanded the optimisation of the trigger selections at each level, to control the rates and keep efficiencies high. To improve the performance multivariate analysis techniques are introduced. The evolution of the ATLAS electron and photon triggers and their performance will be presented, including new results from the 2015 LHC Run 2 operation.
        Speaker: Fernando Monticelli (Universidad Nacional de La Plata (AR))
      • 16:15
        Data acquisition and online control system for new gas-electron multiplier detectors in the endcap muon system of the CMS experiment (12' + 3') 15m
        A new data acquisition and on-line control system is being developed for gas-electron multiplier (GEM) detectors which will be installed in the forward region (1.6 < |η| < 2.2) of the CMS muon spectrometer during the 2nd long shutdown of the LHC, planned for the period 2018-2019. A prototype system employs the TOTEM VFAT2 ASIC that will eventually be replaced with the VFAT3 ASIC, under development. The front-end ASIC communicates over printed circuit lines with an intermediate on-detector board called the opto-hybrid. Data, trigger, and control information is transmitted via optical fiber between the opto-hybrid and an off-detector readout system using micro-TCA technology. On-line software, implemented in the CMS XDAQ framework, includes applications for latency and HV scans, and system management. We report on the operational status of the prototype system that has been tested using cosmic ray muons and extracted high-energy particle beams. This work is preparatory for the operation of a prototype GEM detector system to be installed in the CMS experiment in 2017.
        Speaker: Dr Jose David Ruiz Alvarez (Universidad de los Andes (CO))
    • 14:30 16:30
      Heavy Ions: Collective Effects and Correlations Superior B

      Superior B

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Convener: Matthew Nguyen (Centre National de la Recherche Scientifique (FR))
      • 14:30
        Anisotropic flow and related phenomena in Pb-Pb collisions at √sNN = 5.02 TeV with ALICE (15' + 5') 20m
        ALICE (A Large Ion Collider Experiment) is designed and optimised to study the properties of the Quark-Gluon Plasma (QGP), a new state of matter, which is expected to be created at the high energy densities reached at the LHC. One of the key observables used to characterize the properties of the QGP is the azimuthal anisotropy in particle production. This so-called anisotropic flow is sensitive to the transport properties and equation of state of the QGP. In this presentation, we report the first measurements of anisotropic flow in Pb–Pb collisions at √sNN = 5.02 TeV with ALICE and compare them with both theoretical predictions and experimental measurements at lower energies and other collision systems. This provides a unique opportunity to test the validity of the hydrodynamic paradigm and to further constraint the key transport parameters of the QGP.
        Speaker: Jacopo Margutti (Utrecht University (NL))
      • 14:50
        Recent results on collective effects in small systems from PHENIX at RHIC (15' + 5') 20m
        Collisions of simple systems, such as p+p, or p+Nucleus have been used as benchmarks for our understanding of Heavy Ion Collisions, since it was assumed they would be free of the effects from hot nuclear matter.▒ Recently long range correlations and anisotropies of momentum spectra have been seen in such collisions, challenging this assumption. Such phenomena have been understood to be the result of the collective motion, which can best be described by hydrodynamics, whose initial conditions are set by the geometry of the colliding systems, together with their fluctuations. This talk will discuss the recent results from the PHENIX experiment at RHIC using a variety of colliding species (p+Au, d+Au, He3+Au) which give a better understanding of the origin of the observed correlations and anisotropies, thus providing insight as to whether a Quark Gluon Plasma is formed in these simple systems.▒
        Speaker: Sarah Campbell (PHENIX)
      • 15:10
        Correlations in small systems with ALICE (15' + 5') 20m
        Igor Lakomov for the ALICE Collaboration ALICE is dedicated to the study of the strongly interacting matter, the so-called Quark-Gluon Plasma (QGP), formed in heavy-ion collisions at the LHC. In addition, ALICE also actively participated in the pp and p-Pb collision programs at the LHC. In particular, the measurements of the two-particle azimuthal correlations in pp collisions at 7 TeV and in p-Pb collisions at 5.02 TeV have been performed by the ALICE Collaboration during Run I of the LHC. Similar long-range correlations in p-Pb and Pb-Pb collisions have been observed on the near and away side - also known as the double ridge. Further investigations showed the importance of the Multi-Parton Interactions (MPI) in high-multiplicity collisions in small systems. In this talk we present the ALICE results on the correlations in small systems including the latest analyses using the data from Run II at the LHC.
        Speaker: Igor Lakomov (CERN)
      • 15:30
        Anomalous Chiral Transport in Heavy Ion Collisions (15' + 5') 20m
        Anomalous chiral transport processes, with the notable examples of Chiral Magnetic Effect (CME) and Chiral Magnetic Wave (CMW), are remarkable phenomena that stem from highly nontrivial interplay of QCD chiral symmetry, axial anomaly, and gluonic topology. The heavy ion collisions provide a unique environment where a hot chiral-symmetric quark-gluon plasma is created, gluonic topological fluctuations generate chirality imbalance, and very strong magnetic fields $|\vec{\bf B}|\sim m_\pi^2$ are present during the early stage of such collisions. Significant efforts have been made to look for signals of CME and various other anomalous chiral transport effects signals in heavy ion collision experiments. Crucial for such search and for interpretation of data, is the development of quantitative simulations based on hydrodynamics, with realistic initial conditions and properly accounting for possible backgrounds. We report a number of important recent progress toward this direction. Fluid systems with chiral fermions are described by anomalous hydrodynamics. We combine this new framework with the state-of-the-art, data-validated viscous hydro simulations of heavy ion collisions to describe the anomalous chiral transport of various charges in the quark-gluon plasma in a linearized fashion. Furthermore we have used partonic transport tools (AMPT) to simulate realistic initial conditions for each parton flavor, to be then evolved in time using the anomalous hydro. In addition, known background effects are incorporated in the computation of relevant observables for final state hadrons. Such quantitative simulations have allowed us to (1) systematically examine and contrast the transport of conserved charges with and without anomaly effects; and (2) meaningfully compare modeling predictions with experimental measurements related to CME and CMW. We will present these results in details and discuss their implications for the search of anomalous chiral transport effects. [Refs] Shi, Jiang, Yin, Liao, to appear; Liao, 1601.00381; Kharzeev, Liao, Voloshin, Wang, 1511.04050; Yin, Liao, 1504.06906; Jiang, Huang, Liao, 1504.03201.
        Speaker: Jinfeng Liao (Indiana University)
      • 15:50
        Measurements of flow and correlation phenomena in pp, pPb and PbPb collisions at CMS (15' + 5') 20m
        Many aspects of anisotropic collective flow in ultra relativistic heavy-ion collisions have been studied extensively in the past years using two or more particle correlations. An overview of collective flow and particle correlation measurements at CMS as a function of transverse momentum, pseudorapidity, event multiplicity, for both charged hadrons or identified particles will be presented. These results will be compared among pp, pPb and PbPb systems. Latest results of pp and PbPb data from 2015 run will also be discussed.
        Speaker: Sandra Padula (UNESP - Universidade Estadual Paulista (BR))
      • 16:10
        Measurement of the ridge correlations in pp and pPb collisions with the ATLAS detector at the LHC (15' + 5') 20m
        ATLAS measurement of azimuthal correlations between particle pairs at large pseudorapidity separation in pp and pPb collisions are presented. The data were collected using a combination of the minimum-bias and high track-multiplicity triggers. A detailed study of the dependence of two-particle correlations on the charged particle multiplicity, transverse momentum of the pair constituents and the pseudorapidity separation between particles forming a pair is shown. Measurements of multi-particle cumulants in the azimuthal angles of produced particles in wide pseudorapidity (|η|<2.5) and multiplicity ranges, with the aim to extract a single particle anisotropy coefficient, v1-v5, are also presented. These measurements can help to understand the origin of the long-range correlations seen in high-multiplicity pp and p+Pb collisions.
        Speaker: Anne Marie Sickles (Univ. Illinois at Urbana-Champaign (US))
    • 14:30 16:30
      Neutrino Physics: VSBL reactor exp + Sterile Chicago 6

      Chicago 6

      Convener: Seon-Hee Seo (Seoul National University)
      • 14:30
        Search for Sterile Neutrino at Short Baseline using a Nuclear Reactor (15' + 3') 18m
        The existence of sterile neutrinos may explain the discrepancy between the recent calculation and experimental measurements for the reactor anti-neutrino flux. The sterile neutrino can be searched by measuring the distortion of the anti-neutrino energy spectrum at a very short distance from the reactor core. NEOS, Neutrino Experiment for Oscillation at Short Baseline, measured the anti-neutrino energy spectrum at 24m baseline, in the tendon gallery of a 3 GW$_{\textrm{th}}$ commercial reactor in Yeonggwang, South Korea. A homogeneous target with 0.5% Gd doped liquid scintillator was used to detect e+ and neutron coincidence from the inverse beta decay. The experiment has taken data for about 8 months, reactor off for 2 months and reactor on for the last 6 months. We observed about 2,000 IBD events per day with the signal to background ratio 20. We also observed the energy spectrum discrepancy around 5 MeV between the calculation and experimental data for the first time in the short baseline reactor experiments, as in the $\theta_{13}$ experiments. In this talk, we will present the sterile neutrino search with our data sample.
        Speaker: Dr Yoomin Oh (Institute for Basic Science)
      • 14:48
        PROSPECT: A Short-baseline Reactor Precision Spectrum and Oscillation Experiment (15' + 3') 18m
        Comparison of reactor antineutrino flux and spectrum measurements to model predictions have revealed an apparent deficit in the reactor antineutrino interaction rate and an unexpected spectral deviation. PROSPECT is a phased experiment consisting of segmented Li-loaded liquid scintillator antineutrino detectors that will be located near the High Flux Isotope Reactor (HFIR) at the Oak Ridge National Laboratory. The experiment is designed to resolve these anomalous results by searching for short-baseline neutrino oscillations to test the hypothesis of sterile neutrinos and by performing the first precision measurement of the U-235 reactor antineutrino spectrum. This talk will provide an overview of the design, sensitivity and discovery potential of PROSPECT, and discuss the status of the experiment.
        Speaker: Michael Mendenhall (National Institute of Standards and Technology)
      • 15:06
        SoLid: Search for Oscillations with a Lithium-6 Detector at the SCK•CEN BR2 reactor (15' + 3') 18m
        The disappearance of reactor antineutrino into a new neutral state (called sterile neutrino) has been proposed as a possible explanation for the recent reactor and Gallium anomalies arising from the re-analysis of reactor flux and calibration data of previous neutrino experiments. A way to test this hypothesis is to look for distortions of the anti-neutrino energy caused by oscillation from active to sterile neutrino at close stand-off (~ 6-8m) of a compact reactor core. Due to the small anti-neutrino cross-section, the main challenge in achieving a precise measurement is to control the high level of gamma rays and neutron background that are present at close stand off and to the surface. The SoLid experiment intends to search for active-to-sterile anti-neutrino oscillation at very short baseline of the SCK•CEN BR2 research reactor. A novel approach to measuring reactor anti-neutrinos was developed based on an innovative sandwich of composite Polyvynil-Toluene and 6LiF:ZnS scintillators. The system is highly segmented and read out by a network of wavelength shifting fibers and MPPCs. High experimental sensitivity can be achieved with the combination of high granularity, high neutron-gamma discrimination using 6LiF:ZnS(Ag) scintillator and precise localisation of the inverse beta decay products. We will describe the principle of detection, the detector design and we will focus on the performance of the first full scale SoLid module 1 (SM1) installed at BR2 early 2015 demonstrating the technology. We will present first results on selecting inverse beta decay events using the first data set collected with the SM1 module in 2015, and will show the physics reach of the next phase that will start in 2016.
        Speaker: Dan Saunders (Bristol)
      • 15:24
        SOX : Short Distance Neutrino Oscillations with Borexino (15' + 3') 18m
        The Borexino detector has convincingly shown its outstanding performances in the low energy regime through its accomplishments in the solar and geo neutrinos detection. These performances make it the ideal tool to accomplish a state-of-the-art, source based experiment able to test the long-standing issue of the existence of a sterile neutrino, as suggested by the several anomalous results accumulated over the past two decades, i.e. the outputs of the LSND and Miniboone experiments, the results of the source calibration of the two Gallium experiments, and the recently hinted reactor anomaly. The SOX project will exploit a Cerium based source, which deployed under the experiment, in a location foreseen on purpose at the time of the construction of the detector, will emit an intense beam of anti-neutrinos. Interacting in the active volume of the liquid scintillator, the beam would create an unmistakable spatial wave pattern in case of oscillation of the anti nu-e into the sterile state: such a pattern would be the smoking gun evidence of the presence of the new sterile member of the neutrino family. Otherwise, its absence will allow setting very stringent limit on the existence of the hypothesized sterile state. The talk will outline the project, discuss in detail its sensitivity and update about the status of the ongoing efforts to prepare the measurement.
        Speaker: Birgit Neumair (Technical University of Munich)
      • 15:42
        Status of the MicroBooNE Experiment (15' + 3') 18m

        Text coming

        Speaker: Dr Jyoti Joshi (Brookhaven National Laboratory)
      • 16:00
        Neutrino-argon interactions in MicroBooNE (10' + 2') 12m
        MicroBooNE is a short-baseline neutrino oscillation experiment located in the Booster Neutrino Beamline at Fermilab at a distance of 470 m from the target. The detector is a 89 t active volume liquid-argon time projection chamber (LArTPC). The technology of LArTPCs introduced bubble chamber-like image quality with a fully automated triggering, readout and calorimetric information to the field of neutrino detection. With this data quality, detailed studies of the neutrino interaction and final state particles are possible. MicroBooNE successfully started data taking in fall 2015 and is since collecting unprecedented statistics of neutrino-argon interactions. Besides the investigation of short-baseline oscillations, MicroBooNE is carrying out an extensive cross section physics program, that will help to probe current theories on neutrino-nucleon interactions and nuclear effects. This talk will summarize the latest results of MicroBooNE’s cross section analyses in various channels.
        Speaker: Xiao Luo (Yale)
      • 16:12
        How to make the short baseline sterile neutrino compatible with cosmology (15' + 3') 18m
        A number of short baseline neutrino experiments have found anomalous results throughout the past decades. These can be interpreted as oscillations between the active neutrinos and a sterile neutrino with a mass around $1$eV. The individual anomalies are not very significant themselves, but taken together they provide an interesting hint for a new particle beyond the Standard Model. However, combining a light sterile neutrino with the standard cosmological $\Lambda$CDM model would increase the expansion rate of the Universe and the sterile neutrino would act as hot dark matter. Such modifications to $\Lambda$CDM are not compatible with observations of the cosmological microwave background (CMB), large scale structures (LSS) and primordial abundances of the light elements, which show that the Universe is very well described by standard $\Lambda$CDM. In this talk, I will describe how to reconcile a light sterile neutrino with cosmology by introducing a new hidden interaction for the sterile neutrino. An interaction of this type is capable of suppressing oscillations between active and sterile neutrinos in the early Universe, which is otherwise the main production mechanism of steriles. While this leads to good agreement with the light element abundances, the accommodation of current LSS and CMB observations further constrain the model. Despite the constraints, the force mediator can be either a vector boson or a pseudoscalar, although the two options lead to quite different phenomenologies.
        Speaker: Rasmus Sloth Lundkvist (Max-Planck-Institut für Kernphysik)
    • 14:30 16:30
      Strong Interactions and Hadron Physics: V+jets, photons Ontario

      Ontario

      Conveners: Emily Laura Nurse (University of London (GB)), Robert Schoefbeck (Ghent University (BE))
      • 14:30
        LHCb results with vector bosons (12' + 3') 15m

        A variety of vector boson measurements has been performed with Run 1 LHCb data, including inclusive Z/W cross-sections, the Z forward-backward asymmetry, Z plus charm, Z/W production with jets (including heavy flavor), and top production. Additionally, new inclusive Z/W cross-sections have been measured with Run 2 data. A summary of the most relevant results will be presented.

        Speaker: Donatella Lucchesi (Universita e INFN, Padova (IT))
      • 14:45
        Z+jet production at NNLO (15' + 5') 20m
        We present the complete calculation of the NNLO QCD corrections to the hadronic production of a charged lepton pair in association with a jet. Our results comprise various kinematical distributions that are of importance at the LHC and a significant reduction of the residual scale uncertainty is observed throughout. The corrections to differential distributions are not always uniform and imply the need of such a fully differential computation for precision applications.
        Speaker: Dr Alexander Huss (ETH Zurich)
      • 15:05
        V+jets and MC modelling at the LHC (20' + 5') 25m
        merged abstract
        Speaker: Federico Sforza (CERN)
      • 15:30
        VINCIA for Hadron Colliders (15' + 5') 20m
        We present the first public implementation of antenna-based QCD initial- and final-state showers. The shower kernels are $2\to 3$ antenna functions, which capture not only the collinear dynamics but also the leading soft (coherent) singularities of QCD matrix elements. We define the evolution measure to be inversely proportional to the leading poles, hence gluon emissions are evolved in a $p_\perp$ measure inversely proportional to the eikonal, while processes that only contain a single pole (e.g., $g\to q\bar{q}$) are evolved in virtuality. Non-ordered emissions are allowed, suppressed by an additional power of $1/Q^2$. Recoils and kinematics are governed by exact on-shell $2\to 3$ phase-space factorisations. Tree-level matrix-element corrections a la GKS are included for QCD up to $\mathcal{O}(\alpha_s^4)$ (4 jets), and for Drell-Yan and Higgs production up to $\mathcal{O}(\alpha_s^3)$ ($V/H$ + 3 jets). The perturbative shower uncertainties can be evaluated by variations of renormalization scales and non-singular terms, including an automated mode in which each event is accompanied by a vector of "uncertainty weights". As a proof-of-concept for the applicability of our method we focus on Z boson production at the LHC. The resulting algorithm has been made publicly available in VINCIA 2.0, which is written as a simple plug-in to the PYTHIA 8 event generator.
        Speaker: Peter Skands (Monash University (AU))
      • 15:50
        Prompt photons, diphotons and photon plus jets at hadron colliders (15' + 5') 20m
        Merged abstract
        Speaker: Alessandra Lucà (INFN)
      • 16:10
        New Approach to Hard Corrections in Precision QCD for LHC and FCC Physics (15' + 5') 20m
        We present a new approach to the realization of hard fixed-order corrections in predictions for the processes probed in high energy colliding hadron beam devices, with some emphasis on the LHC and the future FCC devices. We show that the usual unphysical divergence of such corrections as one approaches the soft limit is removed in our approach, so that we would render the standard results to be closer to the observed exclusive distributions. We use the single $Z/\gamma*$ production and decay to lepton pairs as our prototypical example, but we stress that the approach has general applicability. In this way, we open another part of the way to rigorous baselines for the determination of the theoretical precision tags for LHC physics, with an obvious generalization to the future FCC as well.
        Speaker: Bennie Ward (Baylor University (US))
    • 16:30 17:00
      Break 30m
    • 17:00 19:00
      Beyond the Standard Model: 4 Chicago 7

      Chicago 7

      Convener: JiJi Fan (Brown University)
      • 17:00
        Lighting up Collider Searches for Electroweak States (15' + 5') 20m
        Despite appearing in many extensions of the Standard Model, uncolored electroweak particles face limited collider search prospects. For nearly degenerate electroweak multiplets where the lightest state is electrically neutral, searches typically rely on pair production of the new states in association with visible radiation, e.g. the mono-X final state. We show that for such new particles, considering final-state photon radiation can provide increased sensitivity. As an example, we demonstrate that a photon + jet search would extend the ability of the LHC to probe degenerate Higgsinos beyond the reach achievable by a monojet analysis. We find that the additional kinematical information provided by considering an extra photon from final state radiation more than compensates for the reduced statistics, when including the effects of systematic uncertainties.
        Speaker: Ahmed Ismail (Argonne National Laboratory/University of Illinois at Chicago)
      • 17:20
        Prospects for SUSY DM after the LHC Run 1 (15' + 5') 20m
        We present the prospects for the searches for SUSY and Dark Matter at the LHC, future $e^+e^-$ colliders and direct detection experiments, based on our recent studies: "Supersymmetric Dark Matter after LHC Run 1", Eur.Phys.J. C75 (2015) 500, arXiv:1508.01173 "The pMSSM10 after LHC Run 1", Eur.Phys.J. C75 (2015) 9, 422, arXiv:1505.04702 This talk is submitted on behalf of the MasterCode collaboration: http://mastercode.web.cern.ch/mastercode/ A speaker has not yet been assigned but will a member of the Collaboration who is well familiar with the details of the different analyses covered in this talk.
        Speaker: Rick Cavanaugh (University of Illinois at Chicago (US))
      • 17:40
        Studies of dark sector at Belle & Becays involving tau (15' + 5') 20m

        The Belle II experiment aims to record 50 ab$^{-1}$ data with the high
        luminosity to be provided by the SuperKEKB energy-asymmetric $e^+e^-$
        collider. The anticipated high statistics data enables us to perform
        studies of $B$ decays involving $\tau$ leptons such as
        $B^+ \to \tau^+ \nu_{\tau}$ and $B \to D^{(*)} \tau^+ \nu_{\tau}$ modes.
        The precise measurements of branching fraction as well as the $\tau$
        lepton polarization in these $B$ decays provide a very sensitive indirect
        search for a charged Higgs boson. Belle IIs's sensitivity for the charged
        Higgs is complementary to direct searches at ATLAS and CMS.

        Speaker: Gianluca Inguglia (DESY)
      • 18:00
        Lepton Jets from Radiating Dark Matter (15' + 5') 20m
        The idea that dark matter forms part of a larger dark sector is very intriguing, given the high degree of complexity of the visible sector. In this paper, we discuss lepton jets as a promising signature of an extended dark sector. As a simple toy model, we consider an O(GeV) DM fermion coupled to a new $U(1)'$ gauge boson (dark photon) with a mass of order GeV and kinetically mixed with the Standard Model photon. Dark matter production at the LHC in this model is typically accompanied by collinear radiation of dark photons whose decay products can form lepton jets. We analyze the dynamics of collinear dark photon emission both analytically and numerically. In particular, we derive the dark photon energy spectrum using recursive analytic expressions, using Monte Carlo simulations in Pythia, and using an inverse Mellin transform to obtain the spectrum from its moments. In the second part of the paper, we simulate the expected lepton jet signatures from radiating dark matter at the LHC, carefully taking into account the various dark photon decay modes and allowing for both prompt and displaced decays. Using these simulations, we recast two existing ATLAS lepton jet searches to significantly restrict the parameter space of extended dark sector models, and we compute the expected sensitivity of future LHC searches.
        Speaker: Jia Liu (Johannes Gutenberg University Mainz)
      • 18:20
        A simplified model for dark matter interacting primarily with gluons. (15' + 5') 20m
        We consider a simple renormalizable model providing a UV completion for dark matter whose interactions with the Standard Model are primarily via the gluons. The model consists of scalar dark matter interacting with scalar colored mediator particles. A novel feature is the fact that (in contrast to more typical models containing scalar dark matter interacting with gluons) the colored scalars typically decay into multi-quark final states, with no associated missing energy. We construct this class of models and examine associated phenomena related to dark matter annihilation, scattering with nuclei, and production at colliders. We compare the results obtained from effective field theory (EFT) with a loop-induced calculations for the collider processes and show that EFT is not applicable for a large parameter space where mediator mass is comparable to the cuts on missing energy. We calculate the bounds from from $\sqrt{s}=$ 8 and 13 TeV data and show the expected reach of $\sqrt{s}=$ 14 TeV LHC and 100 TeV FCC in constraining or discovering the model. References: Godbole, Rohini M., Gaurav Mendiratta, and Tim MP Tait. "A simplified model for dark matter interacting primarily with gluons." Journal of High Energy Physics 2015.8 (2015): 1-15.
        Speaker: Gaurav Mendiratta (Indian Institute of Science, Bangalore,India)
      • 18:40
        The TREK-E36 Search for New Physics at J-PARC (15' + 5') 20m
        For the TREK Collaboration The TREK-E36 experiment aims to provide a precision test of lepton universality in the leptonic decay ratio for positive kaons RK = Ke2/Kμ2 = Γ(K+->e+νe)/ Γ(K+->μ+νμ), to search for new physics beyond the Standard Model (SM) . The SM prediction for RK is very precise with an uncertainty of ΔRK/RK = 4 x 10-4. An observed deviation would be an indication of New Physics beyond the SM. The TREK-E36 apparatus consists of a toroidal spectrometer, that affords high resolution tracking, in concert with a kaon stopping target, a multi-element CsI(TI) photon detector, and particle ID detector array. TREK-E36 was installed in 2014, at the J-PARC K1.1BR kaon beamline. Commissioning was carried out in 2015 and production data taking was completed in the latter part of 2015. Because TREK-E36 employs stopped kaons, it will provide a unique cross-check to the CERN NA48/62 measurement, with considerably different systematics. The TREK-E36 data will also provide the opportunity to search for light bosons in the mass region below 300 MeV/c2, via rare decay of K+ in several decay channels. The light boson search would be in a mass region that is relevant for explanations of the muon anomalous magnetic moment (g-2) as well as the proton charge radius. This talk will go over the status of the data analysis. Supported by DOE awards DE-SC0003884 and DE-SC0013941 in the US, NSERC in Canada, and Kaken-hi in Japan.
        Speaker: Michael Kohl (Hampton University)
    • 17:00 19:00
      Dark Matter Detection: 2 Chicago 9

      Chicago 9

      Convener: Dr Aaron Chou (Fermilab)
      • 17:00
        Searching for Dark Matter Using the NOvA Upward-going Muon Trigger (15' + 5') 20m
        The NOvA collaboration has constructed a 14,000 ton, fine-grained, low-Z, total absorption tracking calorimeter at an off-axis angle to an upgraded NuMI neutrino beam. This detector, with its excellent granularity and energy resolution and relatively low-energy neutrino thresholds, was designed to observe electron neutrino appearance in a muon neutrino beam, but it also has unique capabilities suitable for more exotic efforts. In fact, if sufficient cosmic ray background rejection can be demonstrated, NOvA will be capable of a competitive indirect dark matter search for low-mass Weakly-Interacting Massive Particles (WIMPs). The cosmic ray muon rate at the NOvA far detector is approximately 100 kHz and provides the primary challenge for triggering and optimizing such a search analysis. We present the first dark matter search results using data collected with the upward-going muon trigger.
        Speaker: Aristeidis Tsaris (Fermilab)
      • 17:20
        Search for Dark Forces with KLOE (15' + 5') 20m
        During the last years several Dark Sector Models have been proposed in order to address striking astrophysical observations which fail standard intepretations. In the minimal case a new vector particle, the so called dark photon or U-boson, is introduced, with small coupling with Standard Model particles. Also, the existence of a dark Higgs boson h' is postulated, in analogy with the Standard Model, to give mass to the U-boson through the Spontaneous Symmetry Breaking mechanism. KLOE searched for the existence of the U-boson in a quite complete way, investigating three different processes and six different final states: - in dalitz decays of the Phi meson Phi-> eta U, with U->e+e- and eta-> pi+pi-pi0 and p0p0p0 - in e+e- -> U gamma events, with U decaying to electron, muon and pion pairs - in the dark Higgsstrahlung process, e+e- -> Uh', U-> mu+mu-, h' invisible. Tight limits on the model parameters have been set at 90%CL. Further improvements are expected in terms of sensitivity and discovery potential with the new KLOE2 detector working on the improved DAFNE e+e- collider.
        Speaker: Francesca Curciarello
      • 17:40
        The Heavy Photon Search experiment at Jefferson Lab (15' + 5') 20m
        The Heavy Photon Search (HPS) experiment at Jefferson Lab is searching for potential particle carriers of a dark force called “heavy photons” that mix with ordinary photons through kinetic mixing. If the coupling to normal matter is weak, then heavy photons can travel a detectable distances before decaying to e+e–. HPS uses a PWO Electromagnetic Calorimeter for fast triggering and complementary energy information in the reconstruction of the e+e– invariant mass. The silicon microstrip vertex tracker is used for momentum and vertex reconstruction with unprecedented precision. The HPS experiment took its first data in an engineering run during the spring of 2015 using a 1 GeV electron beam and a 4 μm tungsten target. HPS is taking more data at 2 GeV in winter 2016. This talk will present the HPS setup, data analysis, and preliminary results, if available.
        Speaker: Dr Greg Kalicy (ODU/JLab)
      • 18:00
        The PADME experiment at DAFNE Linac (15' + 5') 20m
        The long standing problem of reconciling the cosmological evidence of the existence of dark matter with the lack of any clear experimental observation of it, has recently revived the idea that the new particles are not directly connected with the Standard Model gauge fields, but only through mediator fields or “portals”, connecting our world with new “secluded” or “hidden” sectors. One of the simplest models just adds an additional U(1) symmetry, with its corresponding vector boson A'. All SM particles will be neutral under this symmetry, while the new field will couple to the charged particles of the SM with an effective charge $\epsilon$e, so that this new particle is often called “dark photon". Additional interest arises from the observation that A' in the mass range 1 MeV/$c^{2}$ to 1 GeV/$c^{2}$ and coupling $\epsilon \sim10^{−3}$, would justify the discrepancy between theory and observation for the muon anomalous magnetic moment, (g − 2)μ. This possibility has been recently disproved in the hypothesis that the A' decays to SM particles only, on the contrary if A' decays to dark sector particles, almost all of the available experimental constraints can be evaded and the dark photon is still a valuable explanation for the muon (g-2) anomaly. Due to the weak experimental signature, the search for invisibly decaying A' requires carefully designed dedicated experiment. At the end of 2015 INFN has formally approved a new experiment, PADME, to search for invisible decays of the A' at the DAFNE Linac in Frascati. The experiment is designed to detect dark photon produced in positron on fixed target annihilation ($e^+e^-\to \gamma A'$) decaying to dark matter by measuring the final state missing mass. The collaboration aims to complete the design and construction of the experiment by the end of 2017 and to collect $\sim 10^{13}$ positron on target by the end of 2018, thus allowing to reach the $ \epsilon \sim 10^{−3}$ sensitivity up to a dark photon mass of $\sim 26$ MeV/c$^2$
        Speakers: Mauro Raggi (LNF INFN), Paolo Valente (Universita e INFN, Roma I (IT))
      • 18:20
        New methods to search for DM candidates (15' + 5') 20m
        ABSTRACT: The search for Axions, a particle theorized to explain the lack of CP violation in strong physics and suspected to contribute if not explain galactic dark matter, has lead to ever-sensitive techniques to study induced vacuum birefringence. What remains an issue: many of the measurable parameters that could give evidence for this illusive particle scale with the square of the birefringent angle (proportional to the photon-axion coupling constant). This talk will look at new techniques that can generate measurables that scale linearly (first order) with an induced birefringence. This has the potential to extend significantly the range through which cavity experiments can probe the vacuum of space in performing searches for axions and other exotic particles.
        Speaker: Dr Carol Scarlett (Florida A&M University)
      • 18:40
        STAX: a new technique for detecting Axions (15' + 5') 20m
        We propose a new improved detection scheme for axion-like particles search based on a Light-Shining- Through-Wall (LSW) experiment in a photon frequency domain never explored before. We expect to extend the present exclusion limits on the axion-photon coupling constant, Gaγγ, by at least four orders of magnitude with respect to the present limits from similar configuration experiments, as we have proved by explicit calculations. [Capparelli, Cavoto, Ferretti, Giazotto, Polosa, Spagnolo, arXiv1510.06892] Axions appear in very well motivated extensions of the Standard Model, including the Peccei-Quinn mechanism proposed to solve the long-standing strong-CP problem. Together with the weakly interacting massive particles of supersymmetric theories, axions are also a favored candidate to puzzle out the Dark Matter issue. There are three classes of experiments searching for axions: haloscopes, helioscopes and laboratory searches, including LSW experiments. Among these different approaches, the LSW seems to be the most effective, since it is not depending on stellar and astrophysical models and allows a higher axion flux. The photon-axion conversion rate is independent of the energy in our search range and the double conversion rate of the LSW experiments depends only on luminosity, i.e. from the number of photons produced by the source before the wall, and the magnetic field (intensity and extension). The best photon sources currently available on the market, the gyrotrons, operate typically below the THz region, namely between 30 GHz and 1THz, and may exceed an output power of 1 MW. In these microwaves region, a single photon detection is extremely difficult and this is the reason why LSW experiments never operated in this range. Nevertheless, a LSW experiment in this microwave range could increase the sensitivity of the axion search by several orders of magnitude with respect to the current exclusion limits of this class of experiments. We suggest a new technique, based on transition-edge-sensors (TES), operating below 10mK temperature to detect single photons with an energy of 30-100 GHz, where gyrotrons sources have the highest power in output.
        Speaker: Paolo Spagnolo (Universita di Pisa & INFN (IT))
    • 17:00 19:15
      Detector: R&D and Performance: Tracking Detectors Chicago 8

      Chicago 8

      Convener: Ingrid-Maria Gregor (DESY)
      • 17:00
        The Silicon Vertex Detector of the Belle II Experiment (12' + 3') 15m
        The Belle II experiment at the SuperKEKB flavor factory will operate at an unprecedented luminosity of $8\times 10^{35} cm^{2} s^{-1}$, which is about 40 times larger than its predecessor Belle experiment. The vertex detector is composed of two-layer DEPFET pixel detector (PXD) and four-layer double-sided silicon microstrip detector (SVD). To achieve a precise vertex position determination and excellent low-momentum tracking, even under the high background and high trigger rate of 10 kHz, the SVD employs several innovative techniques. In order to minimize the parasitic capacitance in the signal path, 1,748 APV25 ASIC chips, which readout signals from 224k strip channels, are directly mounted on the ladders with the novel Origami concept. The analog signals from APV25 are digitized by an FADC system and sent to the central DAQ and also to online tracking system based on SVD hits to provide the region of interests to PXD in order to reduce the data size of PXD to achieve the required bandwidth and data storage space. In this talk, we present the design principles and construction status of the Belle II SVD.
        Speaker: Antonio Paladino (INFN - National Institute for Nuclear Physics)
      • 17:15
        Silicon pixel R&D for CLIC (12' + 3') 15m
        The physics aims at the future CLIC high-energy linear e+e- collider set very high precision requirements on the performance of the vertex and tracking detectors. Moreover, these detectors have to be well adapted to the experimental conditions, such as the time structure of the collisions and the presence of beam-induced backgrounds. The principal challenges are: a point resolution of a few μm, ultra-low mass (~0.2% X0 per layer for the vertex region and ~1% X0 per layer for the outer tracker), very low power dissipation (compatible with air-flow cooling in the inner vertex region) and pulsed power operation, complemented with ~10 ns time stamping capabilities. A highly granular all-silicon vertex and tracking detector system is under development, following an integrated approach addressing simultaneously the physics requirements and engineering constraints. For the vertex-detector region, hybrid pixel detectors with small pitch (25 μm) and analogue readout are explored. For the outer tracking region, both hybrid concepts and fully integrated CMOS sensors are under consideration. The feasibility of ultra-thin sensor layers is validated with Timepix3 readout ASICs bump bonded to active edge planar sensors with 50-150 μm thickness. Prototypes of CLICpix readout ASICs implemented in 65 nm CMOS technology with 25 μm pixel pitch have been produced. Hybridisation concepts have been developed for interconnecting these chips either through capacitive coupling to active HV-CMOS sensors or through bump-bonding to planar sensors. Recent R&D achievements include results from beam tests with all types of hybrid assemblies. Simulations based on Geant4 and TCAD are used to validate the experimental results and to assess and optimise the performance of various detector designs. The R&D project also includes the development of through-silicon via (TSV) technology, as well as various engineering studies involving thin mechanical structures and full-scale air-cooling tests. An overview of the R&D program for silicon detectors at CLIC will be presented.
        Speaker: Dominik Dannheim (CERN)
      • 17:30
        The LHCb VELO Upgrade (12' + 3') 15m
        The upgrade of the LHCb experiment, scheduled for LHC Run-3, will transform the experiment to a triggerless system reading out the full detector at 40 MHz event rate. All data reduction algorithms will be executed in a high-level software farm. enabling the detector to run at luminosities of $ \rm{2 \times 10^{33}/cm^2/s}$. The Vertex Locator (VELO) is the silicon vertex detector surrounding the interaction region. The current strip detector will be replaced with a hybrid pixel system equipped with electronics capable of reading out at 40 MHz. The upgraded VELO will provide fast pattern recognition and track reconstruction to the software trigger. The silicon pixel sensors have 55×55 μm2 pitch, and are read out by the VeloPix ASIC, from the Timepix/Medipix family. The VeloPix builds on the currently available Timepix3, modified to deliver a radiation hard design capable of an order of magnitude increase in output rate. The hottest regions will have pixel hit rates of 900 Mhits/s yielding a total data rate more than 3 Tbit/s for the upgraded VELO. The silicon pixel sensors must be radiation hard to a level of $\rm{8 \times 10^{15} 1 MeV~n_{eq}/cm^2}$, delivered non uniformly over the sensor surface, and the $\rm {R\&D}$ is focussing on designs capable of tolerating high voltage after irradiaton and maintaining good efficiency and resolution. The detector modules are located in a separate vacuum, separated from the beam vacuum by a thin custom made foil. The foil will be manufactured through a novel milling process and possibly thinned further by chemical etching. The material budget will be minimised by the use of evaporative $\rm CO_2$ coolant circulating in microchannels within 400 um thick silicon substrates. This breakthrough technology allows very efficient heat removal for minimal material and excellent CTE match but poses considerable challenges in the design of the circuits and connectors. The current status of the VELO upgrade will be described and latest results from the design and prototyping will be presented.
        Speaker: Stefano De Capua (University of Manchester (GB))
      • 17:45
        The Phase-1 Upgrade of the CMS Pixel Detector (12' + 3') 15m
        The innermost layers of the CMS tracker are built out of pixel detectors arranged in three barrel layers (BPIX) and two forward disks in each endcap (FPIX). The original CMS detector was designed for the nominal instantaneous LHC luminosity of 1 x 10^34 cm^-2 s^-1. Under the conditions expected in the coming years, which will see an increase of a factor two of the instantaneous luminosity, the CMS pixel detector will see a dynamic inefficiency caused by data losses due to buffer overflows. For with full eff this reason the CMS Collaboration has been building a replacement pixel detector which is scheduled for installation in an extended end of year shutdown during Winter 2016/2017. The Phase I upgrade of the CMS pixel detector will operate at full efficiency at an instantaneous luminosity of 1 x 10^34 cm^-2 s^-1 with increased detector acceptance and additional redundancy for the tracking, while at the same time reducing the material budget. These goals are achieved using a new readout chip and modified powering and readout schemes, one additional tracking layer both in the barrel and in the disks, and new detector supports including a CO2 based evaporative cooling system, that contribute to the reduction of the material in the tracking volume. This contribution will review the design and technological choices of the Phase I detector, and discuss the status of the construction of the detector and the performance of its components as measured in test beam and system tests. The challenges and difficulties encountered during the construction will also be discussed, as well as the lessons learned for future upgrades.
        Speaker: Petra Merkel (Fermi National Accelerator Lab. (US))
      • 18:00
        First testbeam results of prototype modules for the upgrade of the ATLAS strip tracking detector (12' + 3') 15m
        The planned HL-LHC (High Luminosity LHC) in 2025 is being designed to maximise the physics potential of the LHC through a sizeable increase in the luminosity, totalling 1x1035cm-2s-1 after 10 years of operation. A consequence of this increased luminosity is the expected radiation damage at a integrated luminosity of 3000fb-1, requiring the tracking detectors to withstand hadron equivalences to over 1x1016 1 MeV neutron equivalent per cm2. With the addition of increased readout rates, a complete re-design of the current ATLAS Inner Detector (ID) is being developed as the Inner Tracker (ITk), which will consist of both strip and pixellated silicon detectors.  The silicon strip tracker exploits the concept of modularity. Fast readout electronics, deploying 130nm CMOS front-end electronics is glued on top of a silicon sensor. These so-called modules are glued on carbon structures and will span about 200m2 of active area. A broad R&D program is ongoing to develop and prototype many detector components. The modules are extensively tested electronically and recent tests of the prototype strip sensors and associated binary readout electronics have been performed at the DESY II testbeam. The DURANTA telescope was used to obtain a pointing resolution of <4um, with an additional pixel layer installed to improve timing resolution to ~25ns. Results will be shown on the tracking performance of both silicon sensors for the central and forward region of the future silicon strip tracker using the Generalized Broken Lines algorithm. Moreover, results of gain measurements of the CMOS 130nm binary readout chip (ABC130) will be presented and an outlook of their applicability be given. ![The ATLAS ITK protoype Strip (left) central and (right) forward modules under test at the DESY II testbeam][1] [1]: http://www.ppe.gla.ac.uk/~andrewb/TestbeamModules.png
        Speaker: Susanne Kuehn (Albert-Ludwigs-Universitaet Freiburg (DE))
      • 18:15
        Upgrade of the CMS Tracker for the HL-LHC (12' + 3') 15m
        The LHC machine is planning an upgrade program which will smoothly bring the luminosity at about 5*10^34cm-2s-1 in 2028, to possibly reach an integrated luminosity of 3000fb-1 by the end of 2037. This High Luminosity LHC scenario, HL-LHC, will require a preparation program of the LHC detectors known as Phase-2 upgrade. The current CMS Tracker, including both inner pixel and outer strip systems, is already running beyond design specifications and will not be able to survive HL-LHC radiation conditions. CMS will need a completely new device in order to fully exploit the high-demanding operating conditions and the delivered luminosity. The upgrade plan includes extending the pixel detector in the forward region from the current coverage of |\eta|<2.4 to 4, where up to ten disks will compose of the new forward pixel detector. Additionally, the new outer system should have also trigger capabilities. To achieve such goals, R&D activities are ongoing to explore options and develop solutions that would allow including tracking information at Level-1. The design choices for the CMS Tracker upgrades are discussed along with some highlights of the R&D activities.
        Speaker: Georg Auzinger (CERN)
      • 18:30
        The upgraded Pixel Detector of the ATLAS experiment for Run-2 at the Large Hadron collider. (12' + 3') 15m
        Run-2 of the LHC is providing new challenges to track and vertex reconstruction with higher energies, denser jets and higher rates. Therefore the ATLAS experiment has constructed the first 4-layer Pixel detector in HEP, installing a new Pixel layer, also called Insertable B-Layer (IBL). IBL is a fourth layer of pixel detectors, and has been installed in May 2014 at a radius of 3.3 cm between the existing Pixel Detector and a new smaller radius beam-pipe. The new detector, built to cope with high radiation and expected occupancy, is the first large scale application of 3D detectors and CMOS 130nm technology. In addition the Pixel detector was refurbished with a new service quarter panel to recover about 3% of defective modules lost during run-1 and a new optical readout system to readout the data at higher speed while reducing the occupancy when running with increased luminosity. The commissioning and performance of the 4-layer Pixel Detector, in particular the IBL, will be presented, using collision data.
        Speaker: Mapo Giordani (Universita degli Studi di Udine (IT))
      • 18:45
        A High Resolution Fine Grained Tracker as the Reference Near Detector for DUNE (12' + 3') 15m
        This talk presents the reference near detector for DUNE is a fine-grained tracker (FGT). The FGT comprises straw tube tracker (STT), with continuous transition radiation (TR) measurement capability and having an average density of liquid-hydrogen, surrounded by electromagnetic calorimeter (ECAL). The STT and ECAL are embedded in a large dipole magnet. Muon detectors, composed of RPCs, instrument iron-yokes, and the downstream and upstream stations outside the magnet. Neutrino targets including hydrocarbon, argon-gas, calcium, and graphite interleave the STT. The FGT is designed to precisely measure all four species of neutrinos via their charged current interactions: (anti-)muon neutrinos and (anti-)electron neutrinos. The high resolution of the detector allows measurement of the ID and momentum vectors for electrons, muons, pions, protons, and kaons. Anticipated physics capabilities of the FGT are outlined.
        Speaker: Bipul Bhuyan (IIT Guwahati)
      • 19:00
        3 Dimensional Stacked Pixel Detector and Sensor Technology Using less than 3-μmφ Robust Bump Junctions (12' + 3') 15m
        A 3D-IC (Three Dimensional Integrated Circuit) is an effective solution for reducing the manufacturing costs of advanced 2D LSI while ensuring equivalent device performance and functionalities. This technology allows for a new device architecture of stacked detectors/sensor devices with a small dead sensor area and facilitates hyper-parallel data processing. In pixel detectors, many transistors must be accommodated per pixel area to improve the space and time resolutions without increasing the pixel size. Consequently, many methods of realizing 3D-IC devices have been developed to meet this requirement by focusing on the unit processes of 3D-IC technology: (1) through-silicon via (TSV) formation and (2) electrical and mechanical bonding between tiers of the stack. The bonding process consists of several unit processes such as bump or metal contact formation, chip/wafer alignment, chip/wafer bonding, and underfill formation, and many combinations of these processes have been reported. Our research focuses on fine pitch bonding technology with the objective of realizing a versatile bonding for silicon LSI devices and compound semiconductor devices at temperatures less than 150 C for preventing device degradation. Gold microbump connections realized by solid-phase diffusion are one of the promising candidates for this purpose. This paper presents experimental results for a prototype pixel detector with 3.0-μmφ gold cone bumps fabricated by NpD (nanoparticle deposition) and that with gold cylindrical bumps fabricated by a low-incident-angle deposition method. The as-deposited cone bumps consist of gold nanoparticles and are easier to deform compared to the plated gold bumps. Consequently, the collapsibility of the gold cone bumps allows for low-stress bonding, resulting in a compliant and reliable junction without damaging the device surface. The bump size is determined by photoresist patterning, and the bump connection does not greatly protrude during junction formation, in contrast with melting-type bump connections. In addition, the shrinkage ratio of the volume is larger than that of the surface area. Thus, the bump resistance of an easily oxidized metal with a diameter of few microns is affected by the bonding atmosphere. On the other hand, gold is an oxidation-resistive material; therefore, bonding with gold cone microbumps does not adversely affect the electrical characteristics. The resistances per bump of the stacked Si-base pixel detector and stacked CdTe/Si-LSI X-ray sensor are both approximately 0.25 Ω.
        Speaker: Makoto Motoyoshi (Tohoku-MincroTec Co., Ltd (T-Micro))
    • 17:00 19:00
      Heavy Ions: Heavy Flavor Superior B

      Superior B

      Convener: Zvi Citron (Weizmann Institute of Science (IL))
      • 17:00
        Heavy Flavor Production in Heavy Ion Collisions at CMS (15' + 5') 20m
        Studies of Heavy flavor production are of great interest in heavy ion collisions. In the produced medium, the binding potential between a quark and antiquark in quarkonium is screened by surrounding light quarks and antiquarks. Thus, the various quarkonium states are expected to be melt at different temperatures depending on their binding energies, which allows us to characterize the QCD phase transition. In addition, open heavy flavor production are relevant for flavor-dependence of the in-medium parton energy loss. In QCD, gluons are expected to lose more energy compared to quarks when passing through the QGP due to the larger color charge. Compared to light quarks, heavy quarks are expected to lose less radiative energy because gluon radiation is suppressed at angles smaller than the ratio of the quark mass to its energy. This “dead cone” effect (and its disappearance at high transverse momentum) can be studied using open heavy flavor mesons and heavy flavor tagged jets. With CMS detector, quarkonia, open heavy flavor meson and heavy flavor tagged jet spectra are studied with high precision. In this talk, recent results from pp, pPb and PbPb at 2.76 and 5.02 TeV collisions are presented.
        Speaker: Jian Sun (Purdue University (US))
      • 17:20
        Quarkonium and open heavy-flavor production in Pb-Pb and p-Pb collisions with ALICE at the LHC (15' + 5') 20m
        According to lattice QCD calculations, the hot and dense fireball created in relativistic heavy-ion collisions undergoes a phase transition to a relatively long lived deconfined state, named Quark-Gluon Plasma (QGP), which allows the study of QCD in a new regime with respect to pp or elementary particle collisions. Heavy quarks constitute an important probe for QGP studies since they are created during the pre-QGP stage of the collision, with a relatively well known cross section, and their number is conserved throughout the collision history. The way they are affected while traversing the medium, e.g. energy loss, collective motion, provides important information on the QGP properties. Heavy quarkonium particles, strongly bound states consisting of a heavy quark-anti-quark pair ($Q\bar{Q}$), are predicted to melt in the QGP due to color screening, an effect analogous to the Debye screening in QED. However, at high enough heavy-quark densities, it becomes probable to recreate quarkonium states either during the QGP phase or at the system freeze-out. We will present an overview of the ALICE measurements on quarkonium and open heavy-flavor production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=$~2.76 and 5.02 TeV and in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=$~5.02 TeV. The focus of the talk will be on the Run-2 Pb-Pb and latest Run-1 p-Pb results. The theoretical understanding of the presented data will be discussed using recent model calculations.
        Speaker: Ionut Cristian Arsene (University of Oslo (NO))
      • 17:40
        What lattice QCD spectral functions can tell us about heavy quarkonium in the QGP (15' + 5') 20m
        The bound states of a heavy quark and antiquark ( $b\bar{b},c\bar{c}$ ) are ideal probes of the quark-gluon plasma created in relativistic heavy-ion collisions at the RHIC and LHC, since their comparatively large mass allows them to sample the properties of the bulk over its full lifetime. A rich phenomenology is connected with these states. On the one hand, their sequential melting, as e.g. observed in di-muon spectra by CMS, has been considered for a long time as prime signal of QGP formation. On the other hand with measurements of Charmonium replenishment by the ALICE collaboration, the aspect of recombination at the phase boundary has received renewed interest. Here we present recent progress in understanding the in-medium behavior of heavy-quarkonium with the help of first principles lattice QCD simulations, in particular spectral functions extracted therein using a novel Bayesian method [1]. The suppression pattern in di-lepton spectra, observed for the heavier species $b\bar{b}$ urge for a real-time understanding of Bottomonium evolution in the QGP. Due to the heavy bottom mass it can be cast in the language of a Schrödinger equation with an in-medium potential. Lattice QCD spectral functions allow us to determine the values of this in general complex potential from first principles [2] at temperatures even close to the deconfinement crossover transition [3], eliminating the need for model potentials. With experimental indications mounting that Charmonium participates to some extent collectively in the bulk (e.g. $v_2 \neq 0$) we might approximate heavy quarkonium as kinetically thermalized and extract its thermal spectral functions also directly from lattice QCD at $T>0$ [4]. These in-medium spectra in turn provide insight on phenomenologically relevant observables such as the $\psi'$ to $J/\psi$ ratio [5] under measurement in run2 at the LHC. [1] Y. Burnier, A.R., Phys.Rev.Lett. 111 (2013) 182003 [2] A.R., T. Hatsuda, S. Sasaki, Phys.Rev.Lett. 108 (2012) 162001 [3] Y. Burnier, O. Kaczmarek, A.R., Phys.Rev.Lett. 114 (2015) 8, 082001 [4] S. Kim, P. Petreczky, A.R., Phys.Rev. D91 (2015) 054511 and arXiv:1512.05289 [5] Y. Burnier, O. Kaczmarek, A.R., JHEP 1512 (2015) 101
        Speaker: Alexander Rothkopf (Heidelberg University)
      • 18:00
        Tranverse Momentum Distribution in Quarkonium Photoproduction in pp and AA Collisions at the LHC (15' + 5') 20m
        It is investigated the exclusive production of quarkonium states in proton-proton and nucleus-nucleus collisions at the LHC employing the light-cone dipole formalism theoretical framework. We calculate the rapidity, amd specially the tranverse momentum distributions for J/Psi´s and Upsilons, and excited states. Our results are compared to recent experimental data (ALICE and LHCb), and predictions are done for the next LHC data taken in ultraperipheral collisions. The results are discussed in order to critisize the robustness of the formulation to express the effects of QCD at low-x for those systems.
        Speaker: Prof. Maria Beatriz Gay Ducati (UFRGS)
      • 18:20
        Heavy flavor measurements at STAR (15' + 5') 20m
        Heavy quarks are produced by hard processes early in the collision at RHIC energy, and their interaction with the QCD medium is sensitive to the medium properties. The suppression pattern of heavy quarkonia also carries information about the Quark Gluon Plasma. In this talk we will report selected new measurements of open and hidden heavy flavor hadrons from the STAR experiment, especially those with the new Heavy Flavor Tracker (HFT) and Muon Telescope Detector (MTD). We will report an improved D0 RAA measurement, the first D0 v2 and Ds measurements in Au+Au collisions at top RHIC energy, thanks to the HFT. We will also present new J/ψ polarization measurements in p+p collisions. J/ψ production in p+p events with different multiplicities at 500 GeV, RAA and v2 in Au+Au collisions at 200 GeV measured with the MTD will also be presented.
        Speaker: Hao Qiu (LBNL, CA (US))
      • 18:40
        Charmonium and bottomonium spectral functions and the heavy quark diffusion coefficient from lattice QCD (15' + 5') 20m
        We investigate charmonium and bottomonium correlation and spectral functions in lattice QCD at finite temperature to understand in-medium properties of charmonia and bottomonia as well as the heavy quark diffusion. Our simulations with the quenched approximation are performed on large isotropic lattices with a couple of lattice spacings towards the continuum limit. At temperatures in a range from 0.73$T_c$ to 2.2$T_c$ with two different quark masses for charm and bottom we reconstruct spectral functions from Euclidean meson correlation functions. Th heavy quark diffusion coefficient can be estimated from behavior of the correlation function for the vector channel at large imaginary time separation as well as low-frequency behavior of the corresponding spectral function. We show temperature and quark mass dependence of the spectral functions and discuss dissociation of charmonia and bottomonia. We also show temperature dependence of the heavy quark diffusion coefficient for the charm and bottom quarks.
        Speaker: Dr Hiroshi Ohno (Center for Computational Sciences, University of Tsukuba)
    • 17:00 19:00
      Higgs Physics: 3 Chicago 10

      Chicago 10

      Conveners: Kirill Prokofiev (The Hong Kong University of Science and Technology (HK)), Stefania Gori (Perimeter Institute/Cincinnati University)
      • 17:00
        Tools for Higgs Boson Properties with the JHUGen / MELA Framework (15' + 5') 20m
        Study of the CP parity of a Higgs boson and its anomalous couplings to gauge bosons or fermions is one of the priorities of the LHC. We present a coherent framework for the measurement of Higgs boson couplings to two weak vector bosons using its decay, vector boson fusion production, and associated production with a vector boson. Both on-shell and off-shell Higgs boson productions are considered, including their interference with background processes, where relevant. The framework also allows the study of the anomalous couplings of the Higgs boson to fermions in ttH, bbH, tH production and in H->tau tau decays. Particular attention is given to the analysis tools, which include the Monte Carlo generator, re-weighting techniques for a fast simulation of anomalous interactions, and matrix element techniques for the optimal analysis of the processes. The formalism is presented using both the effective field theory and effective scattering amplitudes, where the dependence on the virtuality of weak and Higgs bosons is also tested with form factors. The capabilities of the framework are illustrated with projections for measuring CP-violating properties of the Higgs boson at the LHC.
        Speaker: Dr Meng Xiao (Johns Hopkins University (US))
      • 17:20
        Constraints on the Standard Model dimension 6 effective Lagrangian with HEPfit (15' + 5') 20m
        Using the HEPfit code, we derive constraints on dimension 6 gauge-invariant operators involving Standard Model fields using Electroweak Precision Observables and Higgs signal strengths. We present bounds on Wilson coefficients and translate them into bounds on the New Physics scale. We obtain bounds on individual coefficients and discuss the most general set of operators that can be simultaneously constrained using present data.
        Speaker: Dr Jorge de Blas (INFN Rome)
      • 17:40
        SMEFT, a theory for SM deviations (15' + 5') 20m
        After the LHC Run 1, the standard model (SM) of particle physics has been completed. Yet, despite its successes, the SM has shortcomings vis-à-vis cosmological and other observations. At the same time, while the LHC restarts for Run 2 at 13 TeV, there is presently a lack of direct evidence for new physics phenomena at the accelerator energy frontier. From this state of affairs arises the need for a consistent theoretical framework in which deviations from the SM predictions can be calculated and compared to precision measurements. Such a framework should be able to comprehensively make use of all measurements in all sectors of particle physics, including LHC Higgs measurements, past electroweak precision data, electric dipole moment, g
        Speaker: Prof. Giampiero Passarino (Torino University)
      • 18:00
        Higgs productions in the gluon fusion channel: a complete EFT analysis (15' + 5') 20m
        Much can be gleaned about new degrees of freedom from loop induced gluon fusion processes in the LHC runs in the near future. We look at multiple channels like the gg $\to$ 4l, double Higgs production and Higgs + jet production for the HL-LHC and the 100 TeV FCC and make a combination of these processes to address the $c_t - c_g$ degeneracy in the EFT language. We look at some simplified models in correspondence with our EFT analysis and analyze the extent of the validity of an EFT analysis in this scope.
        Speaker: Ayan Paul (INFN, Sezione di Roma)
      • 18:20
        Higgs off-shell effects at NLO (15' + 5') 20m
        There has been a lot of interest recently in the high-mass behavior of the Higgs boson in its decay to a pair of massive electroweak bosons. In this kinematic regime, the interference between Higgs-mediated amplitudes and continuum $gg \to VV$ amplitudes becomes significant and destructive. I will present the NLO QCD corrections to the interference, including corrections to the continuum massive loop processes calculated in the heavy top mass expansion. An understanding of the radiative corrections to this process is essential in order to exploit off-shell effects to understand properties of the Higgs boson.
        Speaker: Raoul Rontsch (Karlsruhe Institute of Technology)
      • 18:40
        Role of low-energy observables in precision Higgs boson analyses (15' + 5') 20m
        A conventional approach to precision calculations of Higgs boson observables uses quark masses $m_c$ and $m_b$ as inputs. However, quark masses are single numbers that hide a variety of low-energy data from which they are extracted, and also hide the various sources of theoretical uncertainties and correlations with additional input parameters such as $\alpha_s$. Higher-precision calculations, which are needed to give meaning to future measurements, require more direct engagement with the low-energy data in a global analysis. We present an initial calculation in this direction, which illustrates the procedure and reveals some of the theory uncertainties that challenge subpercent determinations of Higgs boson partial widths.
        Speaker: Alexey Petrov (Wayne State University)
    • 17:00 19:00
      Neutrino Physics: Sterile Chicago 6

      Chicago 6

      Convener: Seon-Hee Seo (Seoul National University)
      • 17:00
        Results from the Search for eV-Sterile Neutrinos with IceCube (15' + 5') 20m
        The IceCube neutrino telescope at the South Pole has measured the atmospheric muon neutrino spectrum as a function of zenith angle and energy. We have performed a search for eV-scale sterile neutrinos by looking at distortion in those distributions. Such a sterile neutrino, motivated by the anomalies in short-baseline experiments, is expected to have a significant signature in the $\bar{\nu}_\mu$ survival probability due to matter induced resonant effects for energies of order 1 TeV. This effect makes this search unique and sensitive to small sterile mixings. In this talk, I will present the results of the IceCube sterile neutrino search.
        Speaker: Dr Carlos Argüelles (MIT)
      • 17:20
        Sterile Neutrino Searches with MINOS/MINOS+ (15' + 5') 20m

        Text coming

        Speaker: Dr Leigh Whitehead (UCL)
      • 17:40
        The Short Baseline Neutrino (SBN) Oscillation Program at Fermilab (15' + 5') 20m

        Text coming

        Speaker: Matthew Bass (University of Oxford)
      • 18:00
        Searching for a Sterile Neutrino at J-PARC MLF: JSNS^2 experiment (15' + 5') 20m
        The JSNS^2 experiment aims to search for the existence of neutrino oscillations with Delta m^2 near 1 eV^2 at the J-PARC Materials and Life Science Experimental Facility (MLF). The combination of the 1 MW proton beam (3 GeV), created by the Rapid Cycling Synchrotron (RCS), and the spallation neutron target, provides an intense neutrino source from muon decay at rest (mu+ --> e+ + numubar + nue). The oscillation to be searched for is numubar to nuebar which is detected by the inverse beta decay interaction, nuebar + p --> e+ + n, followed by gammas from the neutron capture of Gd. The two detectors with a total fiducial volume of 50 tons will be located 24 meters away from the mercury target. Additional physics programs include cross section measurements with neutrinos from muon decay at rest (10s of MeV) and with monochromatic 236 MeV muon neutrinos from kaon decay at rest.
        Speaker: Prof. Takasumi Maruyama (KEK)
      • 18:20
        Opportunities With Decay-At-Rest Neutrinos From Decay-In-Flight Neutrino Beams (15' + 5') 20m
        Neutrino beam facilities, like spallation neutron facilities, produce copious quantities of neutrinos from the decay at rest of mesons and muons. The viability of decay-in-flight neutrino beams as sites for decay-at-rest neutrino studies has been investigated by calculating expected low-energy neutrino fluxes from the existing Fermilab NuMI beam facility. Decay-at-rest neutrino production in NuMI is found to be roughly equivalent per megawatt to that of spallation facilities, and is concentrated in the facility’s target hall and beam stop regions. The physics implications and experimental challenges of decay-at-rest neutrino measurements near the target hall are discussed, along with prospects for measurements at facilities along a future Fermilab long-baseline neutrino beam.
        Speaker: Christopher Grant (UC Davis)
      • 18:40
        The front-end of IsoDAR (15' + 5') 20m
        IsoDAR is a cyclotron based neutrino experiment, proposed to investigate the short baseline anomalies by measuring $\bar{\nu_e}$ disappearance over an L/E of approximately 0.6-7.0 m/MeV. When paired with a kiloton class detector like KamLAND, IsoDAR would be able to distinguish between a 3+1 and 3+2 sterile neutrino model and cover the current global allowed region to 5 $\sigma$ in less than 3 years. In order to meet this desired sensitivity, there are several key technologies that IsoDAR must expand on. This talk will focus on the technologies associated with the design of the front-end of IsoDAR. In particular, I will discuss the development and testing of a high-current multicusp H$_2^+$ ion source and the idea of using a radio frequency quadrupole for axial injection into the cyclotron.
        Speaker: Spencer Axani (MIT)
    • 17:00 19:00
      Quark and Lepton Flavor Physics: 3 Superior A

      Superior A

      Convener: Bradley Lee Roberts (Boston University)
      • 17:00
        Correlating new physics signals in flavor physics and possible impact for collider experiments (15' + 5') 20m
        There are several lingering anomalies in flavor physics. There is the long-standing issue of the discrepancy between inclusive and exclusive Vub. Semi-leptonic decays B=> D(*) tau nu when compared with B=> D(*) l nu [for l=mu, e] show deviation from the SM as seen by BABER, Belle and LHCb. And then there is also the long-standing deviation in g-2 of muon from the SM. In this talk An attempt will be made in this talk to study the correlations in the possible new physics signals effecting these processes and their possible impact on collider physics
        Speaker: Amarjit Soni (BNL)
      • 17:20
        The Muon g-2 Experiment at Fermilab (20' + 5') 25m
        The Muon g-2 Experiment at Fermilab has been designed to determine the anomalous magnetic moment of the muon (a_mu) to a precision of 140 parts per billion (ppb). This four-fold improvement over the previous Brookhaven E821 measurement will provide significant insight into the resilient 3.5 standard deviation discrepancy between measurement and the Standard Model prediction. Determination of a_mu at the design precision requires measurement of both the spin precession rate and the magnetic field strength, each with a 70 ppb systematic uncertainty, with projected equal statistical and systematic uncertainties of 100 ppb. The factor of 25 increase in delivered muons from the Fermilab complex drives the gain in statistical precision. The first of this two-part talk will provide an overview of the experiment, and will then detail the methodology, and resulting detector design, for measurement of the anomalous spin precession rate. The second part will discuss the storage ring magnet (transported 3200 miles from Brookhaven over land and sea), the features of the magnet that will allow this experiment to achieve an average field uniformity of one part per million. We will also describe the methodology and status of the shimming process, and provide an overview of the absolute calibration procedure and field monitoring system.
        Speaker: Chris Polly (Fermilab)
      • 17:45
        Computing Hadronic Light by Light Contributions to Muon g-2 on Lattice with Physical Pions (15' + 5') 20m
        The current measurement of muonic $g-2$ disagrees with the theoretical calculation by about 3 standard deviations. Hadronic vacuum polarization (HVP) and hadronic light by light (HLbL) are the two types of processes that contribute most to the theoretical uncertainty. The current value for HLbL is still given by a model . In this talk, I will describe results from a first-principles lattice calculation with a physical 139 MeV pion in a box of 5.5 fm extent. Our current numerical strategies, including noise reduction techniques, evaluating the HLbL amplitude at zero external momentum transfer, and important remaining challenges, in particular those associated with finite volume effects, will be discussed.
        Speaker: Luchang Jin
      • 18:05
        Measurement of hadronic cross-sections with CMD-3 at VEPP-2000 (10' + 5') 15m
        The first round of data taking with CMD-3 detector at VEPP-2000 $e^+e$ collider (BINP, Novosibirsk, Russia) was performed in 2011-2013. The CMD-3 is the general purpose particle detector, equipped by tracking system, two crystal (CSI and BGO) calorimeters, liquid Xe calorimeter, TOF and muon systems. The main goal of experiments at CMD-3 is the measurement of cross-sections and dynamics of exclusive modes of $e^+e^-\to hadrons$. In particular, these results provide important input for calculation of the hadronic contribution to the muons anomalous magnetic moment. Here we present the survey of results of analysis of data taken in 2011-2013, including modes of $e^+e^-\to hadrons$ with up to 6 pions or 2 kaons in final state. About 60 1/pb were taken in the energy range from 0.32 to 2.0 GeV in c.m. The beam energy was continuously measured concurrently with the data taking using Compton backscattering. In 2016 VEPP-2000 resumed operations after upgrade with project luminosity of $10^{32}$ $cm^{-2}s^{-1}$ at 2 GeV.
        Speaker: Dr Ivan Logashenko (BINP)
      • 18:20
        A precise first-principles computation of the hadronic vacuum polarization contribution to the muon anomalous magnetic moment (15' + 5') 20m
        The leading-order hadronic vacuum polarization contribution dominates the uncertainty of the standard model prediction for the muon anomalous magnetic moment. Significant recent advances in lattice QCD methodology make a precise first-principles computation of this contribution with uncertainties comparable to the Fermilab E989 target precision realistic in the next few years. I will review recent breakthroughs, including our precise computation of the quark-disconnected contribution, and outline the necessary steps to complete the computation with sub-percent accuracy.
        Speaker: Christoph Lehner
      • 18:40
        Lattice calculation of the HVP contribution to the anomalous magnetic moment of muon (15' + 5') 20m
        The anomalous magnetic moment of the muon, defined as the fractional difference of its gyromagnetic ratio from the naive value of 2, has been measured with an impressive accuracy of 0.54 parts per million in experiment (BNL E821), thus providing one of the most stringent tests of the Standard Model. Intriguingly, the experimentally measured anomaly disagrees by around 3 standard deviations with the calculated value from the Standard Model. The current theoretical uncertainty is dominated by that from the calculation of the lowest order “hadronic vacuum polarisation (HVP)”. Improvements in the experimental uncertainty by a factor of 4 in the upcoming experiment at Fermilab (E989) are expected and improvements in the theoretical determination would make the discrepancy (if it remains) really compelling in trying to ascertain the possibility of new physics beyond the Standard Model. I will report on our (HPQCD) progress (Phys.Rev. D89 (2014) 11,114501; arXiv:1511.05870; arXiv:1512.03270) and plans for improving the theoretical calculation of the HVP contribution to the anomaly using our new lattice QCD method. We have achieved the most precise lattice results so far for this quantity on multiple lattices with physical up/down, strange and charm quarks in the sea. Our accuracy on the HVP is 2% and this is low enough for the first time to see a 3 sigma discrepancy between the Standard Model and experiment.
        Speaker: bipasha chakraborty (University of Glasgow)
    • 17:00 19:00
      Strong Interactions and Hadron Physics: Belle, Besi Ontario

      Ontario

      Convener: Xiaoyan Shen (Univ. of Science & Tech. of China (CN))
      • 17:00
        Hadron spectroscopy at BES-III (15' + 5') 20m
        Merged abstract
        Speaker: Shan JIN (IHEP)
      • 17:20
        Results from e+e- collisions at BESIII (15' + 5') 20m

        Merged abstract

        Speaker: Ryan Mitchell (Indiana University)
      • 17:40
        Production of exotic hadrons and charmonium at Belle/Babar (12' + 3') 15m
        Merged abstract
        Speaker: Kay Kinoshita (Cincinnati)
      • 17:55
        Charmonia and bottomomia decays at Belle/Babar (12' + 3') 15m
        Merged abstract
        Speaker: Bob Kowalewski (University of Victoria (CA))
      • 18:10
        Excited heavy mesons from lattice QCD (15' + 5') 20m
        I will discuss some recent investigations of excited mesons using first-principles lattice QCD calculations. Over the last few years, by developing a range of novel techniques we have made significant advances in studying hadrons with exotic quantum numbers, near-threshold states, resonances and related scattering phenomena. Some highlights of results from scattering channels involving charm mesons will be presented, including D K scattering relevant for the enigmatic Ds(2317). I will also comment on applications to other phenomenologically-interesting channels and future prospects.
        Speaker: Dr Christopher Thomas (University of Cambridge)
      • 18:30
        Measurement of the Collins asymmetries as a function of energy and transverse momentum for kaons and pions at BABAR (8' + 2') 10m
        Inclusive hadron production cross sections and angular distributions in e+e- collisions shed light on fundamental questions of hadronization and fragmentation processes. We present measurements of the Collins azimuthal asymmetries in inclusive production of hadron pairs, in the e+e- -> h1 h2 X annihilation process, where the hadrons (either kaons or pions) are produced in opposite hemispheres. The data collected by the BABAR detector allow the determination of the Collins fragmentation function dependence on hadron fractional energy and transverse momentum for the up, down and, for the first time, strange quarks. These data can be combined with semi-inclusive deep-inelastic-scattering data to extract the transversity distribution function, which is the least known leading-twist component of the QCD description of the partonic structure of the nucleon.
        Speaker: Georges Vasseur (CEA)
    • 17:00 19:00
      Top Quark and Electroweak Physics: 3 Huron

      Huron

      Convener: Pedro Vieira De Castro Ferreira Da Silva (CERN)
      • 17:00
        Single Top quark production cross section using the ATLAS detector at the LHC (15' + 5') 20m
        Measurements of single top-quark production in proton proton collisions are presented at a center of mass energy of 8 TeV and 13 TeV. A measurement of the cross section where a W boson is exchanged in the t-channel is discussed. The single top-quark and anti-top total production cross sections, their ratio, as well as measurements of the inclusive production cross sections are presented. Differential cross-section measurements of the t-channel process are also discussed. A measurement of the production cross section of a single top quark in association with a W boson, the second largest single-top production mode, is also presented. Evidence for single-top production in the s-channel with the 8 TeV ATLAS dataset is discussed. Finally, measurements of the properties of the Wtb vertex allows to set limits on anomalous couplings. All measurements are compared to state-of-the-art theoretical calculations.
        Speaker: Sebastian Mergelmeyer (Humboldt-Universitaet zu Berlin (DE))
      • 17:20
        Single top quark production measurements in CMS (15' + 5') 20m

        Measurements are presented of t-channel single top quark production in proton-proton collisions at the LHC at centre-of-mass energies of 7, 8 and 13 TeV, using data collected with the CMS experiment during the years 2011, 2012 and 2015. The analyses consider leptonic decay channels of the W from the top decays, and makes use of kinematic characteristics of electroweak single top production for the separation of signal from backgrounds using multivariate methods. The measurement is used to constrain the Vtb CKM matrix element. The results are compared with the most precise standard model theory predictions. The inclusive fiducial cross section is also measured. Measurements of top/antitop cross section ratio and of various differential single top quark production cross sections are also presented.
        Measurements of single top quark production in the tW-channel in pp collisions are presented. In the tW-channel a top quark is produced in association with a W boson. The data were collected in the years 2011 and 2012 at centre-of-mass energies of 7 and 8 TeV. The experimental signature is similar to top pair production, and there is interference at higher orders between the two processes. The measurements are performed using final states in which the associated W boson as well as the one originating from the top quark decay leptonically. Multivariate methods are used to extract the cross section. The result is compared with current standard model theory predictions. The measurement is used to constrain the Vtb CKM matrix element. Furthermore, a search for s-channel single top production at 8 TeV is presented.

        Speaker: Hamed Bakhshiansohi (CP3, UCL)
      • 17:40
        Top physics at CLIC and ILC (15' + 5') 20m
        Measurements of top quark production at e+e- colliders can provide a leap in precision in our knowledge of top quark properties and open a new window on physics beyond the Standard Model. In this contribution the top quark physics prospects of linear colliders is reviewed. Progress in detailed full-simulation studies is reported for the highlights of the programme. We present the prospects for a measurement of the top quark mass and width in a scan of the beam energy through the pair production threshold, and discuss new studies of alternative measurements in continuum production, which are also capable of a precise determination of the mass in a rigorously defined mass scheme. A precision of ~50 MeV on the MSbar mass is expected when taking into account the dominant systematic uncertainties. Another key measurement is the study of the top quark couplings to electroweak gauge bosons, where form factors can be determined to 1% precision, an order of magnitude better than the full LHC programme. New results extend the prospects to different center-of-mass energies and to CP violating form factors. Finally, new studies are presented into the possibility at linear colliders to detect Flavour Changing Neutral Current decays of the top quark, such as the decay t -> cH, to a branching ratio BR(t->cH) ~ 10^-5.
        Speaker: Aleksander Filip Zarnecki (University of Warsaw)
      • 18:00
        Top physics in pp collisions at 100 TeV (15' + 5') 20m
        A 100 TeV pp collider, with a statistics of a trillion produced top quarks, offers many opportunities for precision measurements of the top quark couplings, searches of rare or forbidden decays, and studies of production in extreme kinematical configurations, potentially sensitive to new short-distance phenomena, and an important background to many searches for new physics. This presentation reviews recent progress in these explorations, done in the framework of the Future Circular Collider Study.
        Speaker: Michelangelo Mangano (CERN)
      • 18:20
        Top, EW and BSM physics at the LHeC and FCC-he (15' + 5') 20m
        Energy-frontier deep inelastic scattering at 1000 times higher luminosity than HERA is considered with the LHeC and further the FCC-he. These collider configurations provide unique possibilities for SM and BSM top physics, for novel electroweak precision measurements and for further BSM investigations such as for lepto-partons at the FCC-he. The high precision PDF and $\alpha_s$ information from the LHeC will have a direct impact on the BSM search potential and interpretation of new physics at the LHC.
        Speaker: Christian Schwanenberger (Deutsches Elektronen-Synchrotron (DE))
    • 20:00 21:30
      DOE - PI Meetings: Cosmic Frontier Chicago 9

      Chicago 9

    • 20:00 21:30
      DOE - PI Meetings: Energy Frontier Chicago 8

      Chicago 8

    • 07:00 08:00
      Registration: Registration desk will be open until 6pm
    • 08:00 09:00
      Diversity and Inclusion: Conversation with Students at the African School for Fundamental Physics (2016, Rwanda) Superior B

      Superior B

      • 08:00
        Panel Discussion with Students from Rwanda 1h

        Early-career scientists from Fermilab will discuss physics, life and career with students attending the ASP.

    • 09:00 11:00
      Accelerator: Physics, Performance, R&D and Future Facilities: 4 Superior B

      Superior B

      Convener: Jie GAO (IHEP)
      • 09:00
        The status of MICE (15' + 5') 20m
        Muon beams of low emittance provide the basis for the intense, well characterised neutrino beams of the Neutrino Factory and for lepton-antilepton collisions at energies of up to several TeV at the Muon Collider. The international Muon Ionization Cooling Experiment (MICE) will demonstrate ionization cooling, the technique by which it is proposed to reduce the phase-space volume occupied by the muon beam. MICE is being constructed in a series of Steps. The configuration currently in operation at the Rutherford Appleton Laboratory is optimised for the study the properties of liquid hydrogen and lithium hydride that affect cooling. The results that have recently been submitted for publication will be described along with preliminary results from the MICE study of the effect of liquid hydrogen and lithium hydride on the muon beam. The plans for data taking in the present configuration will be described together with a summary of the status of preparation of the final experimental configuration by which MICE will demonstration the principle of ionization cooling.
        Speaker: Steven Boyd (University of Warwick)
      • 09:20
        Very low Emittance Muon Beam using positron beam on target (15' + 5') 20m
        Muon beams are customarily obtained via K/π decays produced in proton interaction on target. In this paper we investigate the possibility to produce low emittance muon beams from electron–positron collisions at centre-of-mass energy just above the μ+μ- production threshold with maximal beam energy asymmetry, corresponding to a positron beam of about 45 GeV interacting on electrons on target. We present the main features of this scheme with an outline of the possible applications for Higgs factory and Multi-TeV collider. Performances on both amorphous and crystal target are presented, and the general scheme for the muon production will be given.
        Speaker: Mario Antonelli (Istituto Nazionale Fisica Nucleare Frascati (IT))
      • 09:40
        Study of RF Breakdown in Strong Magnetic Field (15' + 5') 20m
        RF cavities are essential components of almost every particle accelerator. Among other limitations, cavity gradients are restricted by occasional sparking inside the cavity, or RF breakdown. It has been shown that presence of external static magnetic field aggravates the influence of breakdown on performance of the cavity. This problem can arise in designs of muon ionization cooling channel, RF guns, klystrons and other applications. The MTA area at Fermilab is the facility that allows us to study the effects of static magnetic fields up to several Tesla on RF cavity operation. As a part of this research program, we have tested "modular" cavity in strong external magnetic fields. The special design of the cavity allowed for easier inspection of the cavity, swapping endplates with different materials and hence better control over sources of systematic errors. I will present results of high-power tests of “modular” cavity with and without external multi-Tesla magnetic field.
        Speaker: Alexey Kochemirovskiy (The University of Chicago)
      • 10:00
        High voltage electron cooling in ion colliders (15' + 5') 20m
        Results of calculations of high voltage electron cooling process in NICA collider are presented. Two independent electron cooling systems in the collider are intended to increase luminosity in space charge dominated regime. The model of cooling calculations was tested on experimental results, obtained in COSY synchrotron, which is equipped with 2 MeV electron cooler, produced by Budker INP. Also a project of high voltage electron cooling systems for the NICA collider is presented.
        Speaker: Maxim Bryzgunov (Budker INP)
      • 10:20
        Options for energy frontier electron-hadron scattering at CERN (15' + 5') 20m
        The design and recent developments are presented for a Large Hadron Electron Collider (LHeC) combining the HL-LHC hadron (p,A) beams with a new electron beam of about 60 GeV energy achieved in a racetrack energy recovery linac configuration. This electron accelerator is also considered as a default for the electron-hadron configuration of the FCC currently under study. The talk will focus on recent studies for achieving around 10$^{34}$ cm$^{-2}$s$^{-1}$ luminosity with the LHeC, making that a competitive future Higgs facility, the design of a demonstrator of the ERL principle specific for the LHeC, and it also presents first studies of the FCC-he configuration.
        Speaker: Max Klein (University of Liverpool (GB))
      • 10:40
        PROTON BEAM INTENSITY UPGRADES ON THE NEUTRINO TARGETS AT THE FERMILAB ACCELERATOR COMPLEX (15' + 5') 20m
        Fermilab is committed to making a substantial increase in the average beam power delivered to the neutrino and muon programs via upgrades to the accelerator complex. Many of the upgrades to the existing injector accelerators are being carried out under the Proton Improvement Plan (PIP). Proton Improvement Plan –II proposes to build an 800 MeV superconducting LINAC, adding to the existing facility which has significant upgrade possibilities in future. In any case, the Fermilab Booster, an 8 GeV injector to the 120 GeV Main Injector, is going to play very significant role for nearly next two decades. In this context, very recently, we proposed and implemented a new beam injection scheme in operation called "early injection scheme" (EIS) for the Fermilab Booster that has a potential to increase the beam intensity from the Booster by at least 40% from current operation of 4.5E12 protons per Booster pulse (design intensity for the PIP). Here we present results from recent beam studies, current status of operational implementation and future plans for the EIS. The EIS operation and improvements should serve the Fermilab program well between the current PIP and future PIP-II upgrade at Fermilab.
        Speaker: Dr Chandrashekhara Bhat (Fermilab)
    • 09:00 11:00
      Astro-particle Physics and Cosmology: Large Scale Structure Chicago 10

      Chicago 10

      Convener: Shirley Ho (Carnegie Mellon University (US))
      • 09:00
        Strong Lensing Search and Confirmation Results from the Dark Energy Survey (12' + 3') 15m
        The Dark Energy Survey (DES) is carrying out a five-year, 5000-sq.-deg. survey of the Southern Galactic Cap. Much of the wide-field area has not yet been systematically surveyed, so we expect to discover many new strongly lensed galaxies and quasars. One of the main objectives of the strong lensing science program in DES is to derive constraints on dark energy. The two major components of this part of the program will be exploiting (1) lenses with background sources at multiple redshifts and (2) lensed quasars. In addition to cosmology, we will use the cluster-scale lens sample to study dark matter mass profile, along with the large sample of sources at varying redshifts to study galaxy evolution and substructure. In early DES data, we have identified over 50 candidates for strong gravitational lensing systems. To find lenses, we use a combination of automated arc-finders, photometric catalog searches and visual scans. Each of these methods has particular strengths for finding different types of lenses, distinguished by their geometric configuration — arcs, rings and multiple images. In an effort to confirm these candidates, we performed spectroscopic follow-up of over half of these candidates at the Gemini South 8m telescope. We present results for the spectroscopic follow-up campaign and the confirmation of new gravitational lenses. As part of the effort to constrain profiles of dark matter haloes, we also present preliminary mass modeling of lenses. Finally, we describe a new ‘holistic’ technique for finding gravitational lenses based on shapelets. This technique has the potential to find lenses regardless of their geometric configuration, as well as to target the types of lenses most valuable for deriving dark energy constraints.
        Speaker: Brian Nord (Fermi National Accelerator Laboratory)
      • 09:15
        Galaxy Clusters in DES: latest results (12' + 3') 15m
        The Dark Energy Survey (DES) is the largest imaging survey by cosmological volume to date. By observing and studying in detail the properties of tens of thousands of galaxy clusters, the DES clusters effort works towards our goal of measuring cosmological parameters with percent-level precision. We present the latest results from this program and discuss prospects for the upcoming data.
        Speaker: Marcelle Soares-Santos (Fermilab)
      • 09:30
        Cosmology from Clusters and Joint SPT-DES Analyses of Clusters in the SPT-SZ survey (12' + 3') 15m
        Galaxy clusters—the largest gravitationally collapsed systems in the Universe—are powerful tools with which to constrain cosmological models as their abundance depends upon both the expansion history of the universe and the growth of density fluctuations. In this talk I will highlight cosmological results derived using clusters identified in the 2500-square-degree South Pole Telescope (SPT) SZ Survey. The SPT cluster sample consists of 516 galaxy clusters (>80% new discoveries) selected via the Sunyaev-Zel’dovich (SZ) effect. The sample has a median mass of $M_{500}\sim3.5x10^{14} M_{sun}/h$, a median redshift of $z$=0.55, and a maximum spectroscopic redshift to date of 1.47. We have used the high-significance portion (377 clusters at $z > 0.25$, detection significance greater than 5)—in combination with dedicated Chandra X-ray follow up observations for 82 of these systems—to place constraints on base $\Lambda$CDM model parameters, the species-summed neutrino mass, the effective number of relativistic species, as well as the equation of state of dark energy. Further constraints from this sample are limited by uncertainties in the mass-SZ observable scaling relation and ongoing efforts to improve this calibration using weak lensing observations will be discussed. Beyond this high-mass SZ-selected sample, there is a wealth of information that can be extracted from joint analyses of clusters using multi-wavelength data from SPT and the optical Dark Energy Survey (DES). I will highlight several of these efforts including a new $\sim 4\sigma$ measurement of the pairwise motion of DES-identified clusters using CMB survey data. While the first modest-significance detections of this phenomena have only recently occurred, measurements using future CMB and galaxy survey data have the potential to place interesting constraints on both cosmological parameters (esp. dark energy models and the sum of the masses of the neutrino species) as well as to test models of gravity at $\sim$100 Mpc scales.
        Speaker: Lindsey Bleem (Argonne National Laboratory)
      • 09:45
        The Dark Energy Spectroscopic Instrument (DESI) and Survey (15' + 5') 20m
        DESI is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations (BAO) and the growth of structure with a wide-area galaxy and quasar spectroscopic redshift survey. The DESI instrument consists of a new wide-field (3.2 deg. field of view) corrector plus a multi-object spectrometer with 5000 robotically positioned optical fibers. It will be installed at prime focus on the Mayall 4m telescope at Kitt Peak, Arizona. The fibers feed 10 three-arm spectrographs producing spectra that cover a wavelength range from 360-980 nm and have resolution up to 5000. The DESI instrument is designed for a 5 year, 14,000 sq. deg. survey of targets that trace the evolution of dark energy. In particular, we will measure the redshifts galaxies to z = 1.6 and the Lyman Alpha forest to z>2. DESI is the successor to the BOSS spectroscopic redshift survey and complements imaging surveys such as the Dark Energy Survey (DES), which recently completed year 3 out of the planned 5 years of operations, and the Large Synoptic Survey Telescope (LSST), which will start operations early in the next decade.
        Speaker: brenna flaugher (Fermilab)
      • 10:05
        In the era of large scale surveys: from BOSS to WFIRST (15' + 5') 20m
        Despite tremendous recent progress, gaps remain in our knowledge of our understanding of the Universe. We have not yet pinned down the properties of dark energy, dark matter, nor have we confirmed Einstein’s theory of Gravity at the largest scales. Current and upcoming large sky surveys of the Cosmic Microwave Background (CMB), Large Scale Structure (LSS) in galaxies, quasars and lyman-alpha forest present us with the best opportunity to understand various mysterious properties of the Universe and its underlying principles. I will review recent results from Baryon Oscillations Spectroscopic Survey (BOSS) and introduce the newly commenced space telescope Wide Field Infrared Survey Telescope (WFIRST) which aims to understand the dark components of the Universe and directly image exoplanets. I will then introduce novel cosmological probes which combine large sky surveys of biased tracers with cosmic microwave background measurements. These novel cosmological probes will open up a window in both the momentum field of the Universe and Gravity at the largest scales.
        Speaker: Shirley Ho (Carnegie Mellon University (US))
      • 10:25
        Disentangling redshift-space distortions and nonlinear bias using large scale structure dynamics (15' + 5') 20m
        The distortion of clustering due to the peculiar motions of galaxies and the apparent scale of characteristic features in the galaxy distribution are key tests of cosmic acceleration. I will discuss some of the current challenges in modeling redshift space distortions in large scale clustering statistics, at the percent level required by future galaxy redshift surveys. This will require us to re-consider the scales at which linear perturbation theory is applicable, the impact of stochasticity on defining a linear growth rate and nonlinear velocity-density correlations. I will present a new approach using the information content along different lines of sight to isolate the impact of nonlinear growth and redshift space distortions.
        Speaker: Elise Jennings
      • 10:45
        Non-Gaussian Covariance of the Matter Power Spectrum in the Effective Field Theory of Large Scale Structure (12' + 3') 15m
        In the era of precision cosmology, understanding the formation of large scale structure (LSS) is essential for gaining insight into physics beyond the Standard Model and of the primordial universe. To that end, effective field theory (EFT) techniques familiar in high-energy physics are being developed for efficient and precise calculations of LSS observables. In this talk, we present the non-Gaussian contribution to the covariance of the matter power spectrum at one-loop order in Standard Perturbation Theory (SPT), and using the framework of the EFT of LSS. The complete one-loop contributions are evaluated for the first time, including the leading EFT corrections that involve seven independent operators, of which four appear in the power spectrum and bispectrum. In the basis where the three new operators are maximally uncorrelated, we find that two of them are suppressed at the few percent level relative to other contributions, and may thus be neglected. We extract the single remaining coefficient from N-body simulations, and obtain robust predictions for the non-Gaussian part of the covariance C(ki, kj ) up to ki + kj ∼ 0.3 h/Mpc.
        Speaker: Mikhail Solon
    • 09:00 11:00
      Detector: R&D and Performance: Trigger/DAQ Chicago 8

      Chicago 8

      Convener: Marzio Nessi (CERN)
      • 09:00
        Mu2e upgrade physics reach optimization studies for the PIP-II era (15' + 5') 20m
        The Mu2e experiment at Fermilab is being designed to study the coherent neutrino-less conversion of a negative muon into an electron in the field of a nucleus. This process has an extremely low probability in the Standard Model, and its observation would provide unambiguous evidence for BSM physics. The current Mu2e design aims to reach a single-event-sensitivity of about $2.5 \cdot 10^{-17}$ and will probe effective new physics mass scales in the $10^3-10^4$ TeV range, well beyond the reach of the LHC. This work studies how the sensitivity might be further improved with a second generation experiment using an upgraded proton beam from the PIP-II project, which will be capable of providing MW beams to Fermilab experiments later in the next decade. We will examine the maximum beam power that can be tolerated for beam energies in the $0.5-8$ GeV range. We will also explore variations in the geometry in the region of the production target using the MARS15 code.
        Speaker: Vitaly Pronskikh (Fermilab)
      • 09:20
        Status of SuperKEKB commissioning and Belle II detector construction (15' + 5') 20m
        The SuperKEKB energy-asymmetric $e^+e^-$ collider has now started commissioning and is working towards its design luminosity of $8 \times 10^{35}$ cm$^{-2}$s$^{-1}$. The collisions will be recorded and analyzed with the Belle II spectrometer, the construction of which is on-going at the roll-out position. Highlights will include the outcome of Phase I commissioning of the SuperKEKB accelerator, BEASTII background commissioning and the most recent progress on the construction of the Belle II detector.
        Speaker: Peter Lewis (University of Hawaii)
      • 09:40
        The Fermilab Test Beam Facility (15' + 5') 20m
        The Fermilab Test Beam Facility is a world class facility for testing and characterizing particle detectors. The facility has been in operation since 2005 and has undergone significant upgrades in the last two years. A second beam line with cryogenic support has been added and the facility has adopted a unified data acquisition system. The facility also recently added a cosmic telescope test stand and improved tracking capabilities. With two operational beam lines, the facility can deliver a variety of particle types and momenta ranging from 120 GeV protons in the primary beam line down to 200 MeV particles in the tertiary beam line. In addition, recent work has focused on analyzing the beam structure to provide users with information on the data they are collecting. With these improvements, the Fermilab Test Beam facility is one of the most versatile test beams in the world, capable of supporting High Energy physics applications as well as industry users. The upgrades will be discussed along with plans for future improvements.
        Speaker: Mandy Rominsky (Fermilab)
      • 10:00
        GIF++: A new CERN Irradiation Facility to test large-area particle detectors for the High-Luminosity LHC program (15' + 5') 20m
        The high-luminosity LHC (HL-LHC) upgrade is setting a new challenge for particle detector technologies. The increase in luminosity will produce a higher particle background with respect to present conditions. Detector performance and stability at LHC and future system upgrades will remain the subject of extensive studies. The present contribution describes the new Gamma Irradiation Facility (GIF++) recently built at CERN. GIF++ is a unique place where high energy charged particle beams (mainly muon beam with momentum up to 100 GeV/c) and gammas from a 14 TBq 137Cesium source are simultaneously available. The high activity of the source produces a background gamma field allowing to accumulate doses equivalent to HL-LHC experimental conditions in a reasonable time (typically few months for muon detectors). The 100 m2 GIF++ irradiation bunker has two independent irradiation zones making possible to test real size detectors (several m2), as well as a broad range of smaller prototype detectors and electronic components. The photon flux of each irradiation zone can be tuned using a set of Lead filters with attenuation factors from zero to 50000. Flexible services and infrastructure including electronic racks, gas systems, radiation and environmental monitoring systems and a large preparation zone allow time-effective installation of detectors. A dedicated control system provides the overview of the status of the facility and archives relevant information. The new facility is operational since April 2015 with an active user community of about 90 physicists, engineers and technicians. About 15 setups are constantly performing R&D tests in the bunker. They include seven different gaseous detector technologies: Drift Tubes, Gas Electron Multiplier, Cathode Strip Chambers, Micro-Megas, Resistive Plate Chambers, glass based Resistive Plate Chambers and Thin Gap Chambers. In addition, the facility permits to perform validation tests for the final production chambers just before installation in the LHC experiments. The varieties of tests performed will be presented.
        Speaker: Roberto Guida (CERN)
      • 10:20
        Hybrid cosmic rays detector (15' + 5') 20m
        Here is the design, the construction and characterization of a hybrid cosmic rays detector based on drift tube and Cherenkov radiation detector with two ionization detection channels and two Cherenkov radiation detection channels operating simultaneously. The basic detection cell is a structural Aluminum tube of 2.54 cm x 2.54 cm cross section, 1.01 m long and 0.1 cm thick tube interiorly polished to mirror and slightly covered with TiO2, filled with (90%)Argon + (10%)Methane gas mixture. There is an Au-coated Tungsten wire coaxially and instrumented at both ends, to supply a high voltage, around +1800 V to +2000 V to the metal wire and read the output signals from ionization detection channel. The Cherenkov channel is based on S10362-11-100U Hamamatsu avalanche photodiodes placed in both ends over the acrylic caps designed to hold them. The avalanche photodiodes are electronically instrumented to supply them + 70 V and read the output signals due to Cherenkov radiation produced inside the cell. All the output signals are amplified in a 2 factor; the data acquisition system, CompactRio, from National Instruments records digital pulses from the discriminated output signals every 1 ms for each detection channel. This detector is the basic unit to build a larger cosmic rays detector. Details on design, construction, characterization, calibration, operation and potential applications of this hybrid cosmic rays detector is all about this report. Keywords: Cosmic rays, hybrid detector, drift tubes, ionizing radiation, Cherenkov radiation.
        Speakers: Diego Andrade (Universidad de Guanajuato), Julian Felix (Instituto de Fisica, Universidad de Guanajuato. Mexico)
      • 10:40
        Challenges of Particle Flow reconstruction in the CMS High-Granularity Calorimeter at the High-Luminosity LHC (15' + 5') 20m
        The challenges of the High-Luminosity LHC (HL-LHC) are driven by the large number of overlapping proton-proton collisions (pileup) in each bunch-crossing and the extreme radiation dose to detectors positioned at high pseudorapidity. To overcome this challenge CMS is designing and implementing an endcap electromagnetic+hadronic sampling calorimeter employing silicon pad devices in the electromagnetic and front hadronic sections, comprising over 6 million channels, and highly-segmented plastic scintillators in the rear part of the hadronic section. This High-Granularity Calorimeter (HGCAL) will be the first of its kind used in a colliding beam experiment. Clustering deposits of energy over many cells and layers is a complex and challenging computational task, particularly in the high-pileup and high-event-rate environment of HL-LHC. These challenges, their solutions will be discussed in detail, as well as their implementation in the HGCAL offline reconstruction. Baseline detector performance results will be presented for electromagnetic and hadronic objects, and case studies demonstrating the advantages of fine longitudinal and transverse segmentation will be explored.
        Speaker: Lindsey Gray (Fermi National Accelerator Lab. (US))
    • 09:00 11:10
      Joint Beyond the Standard Model & Higgs Chicago 7

      Chicago 7

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Conveners: Kirill Prokofiev (The Hong Kong University of Science and Technology (HK)), Kiwoon Choi (KAIST), Stefania Gori (Perimeter Institute/Cincinnati University)
      • 09:00
        Search for a high mass diphoton resonance using the ATLAS detector (15' + 5') 20m
        The search for a spin-0 or spin-2 state decaying into two photons in a large mass range is presented, using about 10 fb-1 of p-p collisions at 13 TeV.
        Speaker: Bruno Lenzi (CERN)
      • 09:20
        Searches for BSM physics in diphoton final state at CMS (15' + 5') 20m
        A search for new physics in high-mass diphoton events is presented. The analysis is performed by looking for bumps on the continuum diphoton mass spectrum. This clean signature is sensitive to high-mass gravitons predicted by models with extra dimensions and to scalar resonances arising from many extensions of the standard model. The talk focuses on the recent results obtained using data collected during the 2015 run as well as the first part of the 2016 run.
        Speaker: Chiara Ilaria Rovelli (Universita e INFN, Roma I (IT))
      • 09:40
        The Relaxion and Composite Higgs (12' + 3') 15m
        The recently-proposed relaxion framework aims to provide a novel dynamical solution to the Standard Model hierarchy problem. We examine the phenomenology of a new TeV-scale QCD-like sector associated with particular relaxion models in which non-perturbative effects in the new sector provide the stopping-potential for the relaxion. Among the host of potential new-physics signals, whose impact we consider in exploring the parameter space available to these models, it is particularly interesting that decays of the new-sector mesons may provide an explanation for the recent evidence from ATLAS and CMS indicating the presence of an excess of diphoton events with an invariant mass near 750GeV.
        Speaker: Michael Fedderke (University of Chicago)
      • 09:55
        Dark sector shining through 750 GeV dark Higgs boson at the LHC (12' + 3') 15m

        We consider a dark sector with SU(3)C×U(1)Y×U(1)X and three families of dark fermions that are chiral under dark U(1)X gauge symmetry, whereas scalar dark matter X is the SM singlet. U(1)X dark symmetry is spontaneously broken by nonzero VEV of dark Higgs field ⟨Φ⟩, generating the masses of dark fermions and dark photon Z′. The resulting dark Higgs boson ϕ can be produced at the LHC by dark quark loop (involving 3 generation) and will decay into a pair of photon through charged dark fermion loop. Its decay width can be easily ∼45 GeV due to its possible decays into a pair of dark photon, which is not strongly constrained by the current LHC searches pp→ϕ→Z′Z′ followed by Z′ decays into the SM fermion pairs. The scalar DM can achieve thermal relic density without conflict with direct detection bound or the invisible ϕ decay into a pair of DM.

        Speaker: pyungwon ko (Korea Inst. for Advanced Study (KIAS))
      • 10:10
        The NMSSM lives - with the 750 GeV diphoton excess (12' + 3') 15m
        We propose an NMSSM scenario that can explain the excess in the diphoton spectrum at 750 GeV recently observed by ATLAS and CMS. We show that in a certain limit with a very light pseudoscalar one can reproduce the experimental results without invoking exotic matter. The 750 GeV excess is produced by two resonant heavy Higgs bosons that subsequently decay to light pseudoscalars. Each of these decays to collimated photon pairs that appear as a single photon in the electromagnetic calorimeter. A mass gap between heavy Higgses mimics a finite width of the 750 GeV peak. The production mechanism via initial b quarks ameliorates a possible tension with 8 TeV data compared to other production modes. We also discuss other constraints, in particular from low energy experiments. Finally, we discuss possible methods that could distinguish our proposal from other physics models in the run-2 of the LHC.
        Speaker: Krzysztof Rolbiecki (University of Warsaw)
      • 10:25
        Measuring the diphoton coupling of a 750 GeV resonance at the LHC (12' + 3') 15m
        A slight excess has been observed in the first data of photon-photon events at the 13~TeV LHC, that might be interpreted has a hint of physics beyond the Standard Model. We show that a completely model-independent measurement of the photon-photon coupling of a putative 750 GeV resonance will be possible using the forward proton detectors scheduled at ATLAS and CMS. We consider the possibility that the diphoton excess at 750 GeV is caused by a new scalar resonance produced in photon fusion. This scenario is parametrised by only one relevant effective couplings and is thus minimal. We show that this setup can reproduce both the production rate and width of the resonance, and is not in conflict with the 8 TeV limits on the diphoton cross section. The scenario also predicts event rates for $WW$, $ZZ$, $Z\gamma$ final states. We suggest to perform precision measurements by studying light-by-light scattering with intact protons detected in forward detectors. We construct a simple model that shows that the required couplings can be achieved with new vectorlike, uncolored fermions (with a strong Yukawa coupling to the resonance) which may also account for the required width.
        Speaker: Christophe Royon (University of Kansas (US))
      • 10:40
        Diphoton and Diquark Resonances in U(1) Extension of MSSM (12' + 3') 15m
        Inspired by the 750 GeV resonance displayed in Run II by the ATLAS and CMS experiments, we propose to incorporate it in an extension of the MSSM based on a suitable gauge symmetry G. The combination of G and a U(1) R-symmetry yields a unique renormalizable superpotential containing a G-singlet superfield S, such that G breaks to MSSM at scale M with supersymmetry unbroken. The mass of the predicted MSSM singlet scalar resonance, as well as masses of the associated MSSM vectorlike fields do not exceed the symmetry breaking scale M because of G and U(1)_R, and indeed can be considerably smaller. The MSSM mu problem is elegantly resolved in these models. We present details for two models including production cross sections and decay widths based on well known U(1) extensions of the MSSM.
        Speaker: qaisar shafi (university of delaware)
      • 10:55
        Higgs-radion Interpretation of the 750 GeV di-photon excess at the LHC (12' + 3') 15m
        We present a possible interpretation of the excess in the di-photon channel at 750 GeV recently observed by ATLAS and CMS as the radion of the five-dimensional Randall-Sundrum model. We show that the Higgs-radion scenario can give a cross section of (5--􀀀15) fb in the di-photon final state at 750 GeV while at the same time giving a very SM-like state at 125 GeV. Tests of the model using other final states will be discussed. Theoretical implications of this di-photon explanation are also considered.
        Speaker: Jack Gunion (University of California Davis (US))
    • 09:00 11:00
      Neutrino Physics: Neutrino models + collider tests Chicago 6

      Chicago 6

      Convener: Andre De Gouvea (Northwestern University)
      • 09:00
        Sterile Neutrinos in Models (15' + 3') 18m
        Sterile Neutrino Models appear in many models, and their masses can lie anywhere between zero and the GUT scale. Depending on that mass and the mixing with the active sector, their phenomenology can cover aspects such as leptogenesis, dark matter, short baseline neutrino oscillations, vacuum stability, neutrinoless double beta decay etc. Typical models for several such cases are discussed.
        Speaker: Dr Werner Rodejohann
      • 09:18
        Gauge Coupling Unification in Radiative Neutrino Mass Models (15' + 2') 17m
        We investigate the renormalization group running of gauge couplings in various radiative neutrino mass models, which generate neutrino masses at one- and two-loop order. We discuss the possibility for these couplings to unify in such models at an energy scale close to the GUT scale. The studies are performed both analytically, at one-loop level, and numerically, at two-loop level, using the software PyR@TE. We study five different classes of models, which are (i) minimal dimension-7 models which generate neutrino masses at one-loop level (15 models), (ii) the same models with additional dark matter candidates (15 models), (iii) models with minimal dark matter which generate neutrino masses at one-loop level (35 models), (iv) the same models with all particles colored, and finally, (v) models with scalar colored octets (three models). The dark matter candidates, which are added in class (ii), are not excluded by direct detection constraints. In addition, each of the dark matter representations should not have a contribution to the running so that there is a Landau pole below a presumed unification scale. We find that unification is achieved in several models. The particles in class (i) are added in up to six generations and we find unification in four versions of the models in this class. Out of the models in class (ii), we find that 15 models that unify. In classes (iii) and (iv), we find unification in eight and two models, respectively. Finally, none of the models in class (v) unify. In general, we find that unification can occur and the scale is normally in the range $(10^{10}-10^{14})$ GeV. The model with the highest scale is a model in class (i), which has the scale $1.8 \cdot 10^{16}$ GeV.
        Speaker: Stella Riad (KTH Royal Institute of Technology)
      • 09:35
        Testing Neutrino Mass Models at the LHC and beyond (15' + 3') 18m
        We will review the current status and future prospects of testing some simple neutrino mass mechanisms at the energy frontier, with particular emphasis on the ongoing searches at the LHC, as well as some recent theoretical developments to enhance the sensitivity. We will also discuss the complementarity with various low-energy probes at the intensity frontier.
        Speaker: Dr Bhupal Dev (MPIK, Heidelberg)
      • 09:53
        Searches for heavy neutrinos at the LHC (30' + 4') 34m
        Heavy neutrinos occur in various extensions of the Standard Model (SM) and may explain the observed small masses of the SM neutrinos via several possible variants of the seesaw mechanism. We present results on searches for heavy neutrinos at the LHC. Searches are performed in the dilepton+jets channel and the trilepton channel, and results are interpreted in terms of the Left-Right Symmetrical model, Type-I, and the Type-III seesaw mechanism.
        Speakers: Un Ki Yang (Seoul National University (KR)), Un-ki Yang (Seoul National University)
      • 10:27
        Global constraints on heavy neutrino seesaw mixing (15' + 3') 18m
        We extend the Standard Model with 3 right-handed neutrinos with an approximate lepton number symmetry, which leads to sizeable neutrino mixing while generating the neutrino masses and PMNS matrix measured in oscillation experiments. Constraints on the right-handed neutrino mixing are derived through a global fit to electroweak precision observables. We analyze explicitly the impact of one-loop corrections on these constraints.
        Speaker: Josu Hernandez
      • 10:45
        Neutrino physics with SHIP (13' + 2') 15m
        SHIP is a new general purpose fixed target facility, whose Technical Proposal has been recently reviewed by the CERN SPS Committee, who recommended that the experiment proceeds further to a Comprehensive Design phase. In its initial phase, the 400GeV proton beam extracted from the SPS will be dumped on a heavy target with the aim of integrating $2\times 10^{20}$ pot in 5 years. A dedicated detector, based on a long vacuum tank followed by a spectrometer and particle identification detectors, will allow probing a variety of models with light long-lived exotic particles and masses below O(10) GeV/c$^2$. The main focus will be the physics of the so-called Hidden Portals. The sensitivity to Heavy Neutrinos will allow for the first time to probe, in the mass range between the kaon and the charm meson mass, a coupling range for which Baryogenesis and active neutrino masses could also be explained.Another dedicated detector will allow the study of neutrino cross-sections and angular distributions. $\nu_\tau$ deep inelastic scattering cross sections will be measured with a statistics 1000 times larger than currently available, with the extraction of the $F_4$ and $F_5$ structure functions, never measured so far and allow for new tests of lepton non-universality with sensitivity to BSM physics.
        Speaker: Eric Van Herwijnen (CERN)
    • 09:00 11:00
      Quark and Lepton Flavor Physics: 4 Superior A

      Superior A

      Convener: Bradley Lee Roberts (Boston University)
      • 09:00
        Lepton Flavor Violation in B decays (15' + 5') 20m
        Recent b to s data from the LHCb experiment seem to hint at lepton-flavor non-universality effects beyond the SM. We argue that such effects generally imply also lepton flavor violation at rates much higher than within the SM. In the context of a simple model we provide a number of experimental tests of this possibility, at LHCb itself and elsewhere.
        Speaker: Diego Guadagnoli (LAPTh Annecy)
      • 09:20
        Direct probes of flavor-changing neutral currents in e+e− collisions (15' + 5') 20m
        We propose a novel method to study flavor-changing neutral currents in the $e^+ e^− \to D^{∗0}$ and $e^+ e^− \to B^∗_s$ transitions, tuning the energy of $e^+e^−$- collisions to the mass of the narrow vector resonance $D^{∗0}$ or $B^∗_s$. We present a thorough study of both short-distance and long-distance contributions to $e^+e^− \to D^{∗0}$ in the Standard Model and investigate possible contributions of new physics in the charm sector. This process, albeit very rare, has clear advantages with respect to the $D^0 \to e^+ e^−$ decay: the helicity suppression is absent, and a richer set of effective operators can be probed. Implications of the same proposal for $B^∗_s$ are also discussed.
        Speaker: Alexey Petrov (Wayne State University)
      • 09:40
        The Mu2e experiment at Fermilab (10' + 5') 15m
        The Mu2e Experiment at Fermilab will search for coherent, neutrinoless conversion of muons into electrons in the field of a nucleus with a sensitivity improvement of a factor of 10,000 over previous experiments. Such a charged lepton flavor-violating reaction probes new physics at a scale inaccessible with direct searches at either present or planned high energy colliders. The experiment both complements and extends the current search for muon decay to electron+gamma at MEG and searches for new physics at the LHC. We will present the physics motivation for Mu2e, the novel design of the muon beamline and the detector, and the current status of the experiment.
        Speaker: Bertrand Echenard (Caltech)
      • 09:55
        Search for Muon to Electron Conversion at J-PARC - COMET Experiment - (10' + 5') 15m
        Muon to electron conversion in a muonic atom is a process of charged lepton flavor violation (CLFV). It is not allowed in the Standard Model (SM) and known to be one of the best processes to search for new physics beyond the SM. The COMET experiment aims to search for this process at J-PARC with single-event sensitivity of 3x10^{-17}. which is about 10,000 improvement over the current limit. Recently the COMET experiment has taken a staged approach. COMET Phase-I, as the first phase, aims at a single-event sensitivity of 3x10^{-15} with the partial muon beam line and a Phase-I dedicated detector. The construction of COMET Phase-I has started in 2013 and its physics run is expected to start in 2018/2019. The COMET Phase-II will follow immediately. In this talk, we will describe the physics motivation of CLFV, and the details of COMET Phase-I / Phase-II together with the current status of the experiment preparation.
        Speaker: MyeongJae Lee (Institute for Basic Science (Korea))
      • 10:10
        The MEG experiment result and the MEG II status (10' + 5') 15m
        The MEG experiment at PSI is searching for the lepton-flavour violating decay mu -> e+gamma with unprecedented sensitivity. MEG set the most stringent experimental bound to date, based on the analysis of 2009, 2010 and 2011 data, to be <5.7 x 10^-13 with an associated sensitivity of about 7.7 x 10^-13. I will present the MEG final result which has an associated sensitivity of about 5.3 x 10^-13. I will also show the reconstruction improvements in the positron tracking code and the detector and target alignments. An experiment upgrade is conceived in order to further improve the sensitivity by one order of magnitude in three years of data taking. It will take benefit of the MEG infrastructures as the beam lines, the magnet and the calorimeter cryostat and technology, while the detectors and the TDAQ electronics were re-designed to cope with a doubled muon stopping rate in the target. The MEG II experiment is currently under construction, the commissioning is foreseen between the end of this year and the first months of 2017. I will overview the new detector and describe the most important improvements.
        Speaker: Luca Galli (INFN)
      • 10:25
        The Mu3e Experiment at PSI (10' + 5') 15m
        The Mu3e experiment will search for the lepton flavor violating neutrinoless muon decay $\mu^+ \rightarrow e^+ e^- e^+$ with a sensitivity down to $10^{-16}$ (90 % C.L.), i.e. a four order of magnitude improvement over previous measurements, using the world most intense muon beam at the Paul Scherrer Institute. This decay is strongly suppressed in the Standard Model, whilst several Beyond the SM models predict observable effects accessible to the new generation of LFV experiments. The search for the $\mu^+ \rightarrow e^+ e^- e^+$ decay requires a large acceptance detector capable of coping with rates of up to $2 \times 10^9$ stopped muons per second with excellent momentum, spacial, and time resolution to suppress backgrounds below the $10^{16}$ level. The required Mu3e detector performance is possible thanks to tracking detectors based on thin monolithic active silicon pixel sensors (HV-MAPS) in conjunction with an innovative tracking concept and very precise timing measurements using scintillating fibers and tiles coupled to silicon photo-multipliers. The first phase of the Mu3e exeriment aiming to a sensitivity of $10^{-15}$ has been recently approved. Following the R&D phase, the collaboration is currently preparing for detector construction. First data taking is expected in 2017.
        Speaker: Sandro Bravar (Universite de Geneve (CH))
      • 10:40
        Lepton flavor (universality) violation in rare kaon decays (15' + 5') 20m
        Recent anomalies in the decays of $B$-mesons and the Higgs boson provide hints towards lepton flavor (universality) violating physics beyond the Standard Model. In this talk, we observe that 4-fermion operators which can explain the $B$-physics anomalies have corresponding analogs in the kaon sector, and we analyze their impact on $K\to\pi\ell\ell'$ and $K\to\ell\ell'$ decays $(\ell=\mu,e)$. For these processes, we note the corresponding physics opportunities at the NA62 and KOTO experiments. In particular, assuming minimal flavor violation, we comment on the required improvements in sensitivity necessary to test the $B$-physics anomalies in the kaon sector.
        Speaker: LEWIS TUNSTALL (University of Bern)
    • 09:00 11:00
      Strong Interactions and Hadron Physics: UE, DPS Ontario

      Ontario

      Conveners: Emily Laura Nurse (University of London (GB)), Robert Schoefbeck (Ghent University (BE))
      • 09:00
        The underlying event and Monte Carlo tunes at the LHC (12' + 3') 15m

        Merged abstract

        Speaker: Richard Dryden Field (University of Florida (US))
      • 09:15
        The Extremes of the Underlying Event (12' + 3') 15m

        Our understanding of the transition from partons to hadrons in QCD has been challenged in recent years. In particular for high-multiplicity minimum-bias events at the LHC, novel experimentation techniques have revealed tantalising indications of non-trivial and possibly collective phenomena. A new wave of model building efforts has ensued, including ideas of colour reconnections, colour ropes, interacting strings, and hydrodynamics. It is essential to develop further sensitive probes of the mechanisms underpinning this fundamental aspect of QCD, to find answers to key questions such as if and how jet universality is broken and whether thermalisation is relevant in pp collisions. The answers will not only be of fundamental interest but will also impact precision studies that rely on hadronisation models, as well as the interpretation of heavy-ion results that use pp collisions as a reference. Using strangeness and baryons as tracers, we propose an extension of minimum-bias studies adapted to the environment of the underlying event which show substantial discriminatory power between several alternative models of soft physics. The applicability of this and related works to improve soft physics modelling at the LHC is explored.

        Speaker: Tim Martin (University of Warwick (GB))
      • 09:30
        Double parton scattering at hadron colliders (20' + 5') 25m
        Merged abstract
        Speaker: Jason Adrian Kamin (University of Illinois at Chicago (US))
      • 09:55
        Associated production of quarkonia and heavy hadrons (20' + 5') 25m
        Merged abstract
        Speaker: Jane Nachtman (University of Iowa (US))
      • 10:20
        Associated V+quarkonia (15' + 5') 20m
        Merged abstract
        Speaker: Zdenek Dolezal (Charles University (CZ))
      • 10:40
        Multiple partonic interactions in production of four jets within High Energy Factorization (15' + 5') 20m
        We perform the first study of 4-jet production in a complete kt-factorization framework at the LHC, discussing the onset and relevance of Double Parton Scattering contributions. We compare our results to those reported by the ATLAS and CMS collaborations for different sets of kinematic cuts. We find that care is necessary when assessing the relevance of the double parton scattering contribution in kt-factorization, as the instability of higher order contributions to the dijet cross section can easily lead to overestimate the suppression with respect to the collinear case.
        Speaker: Krzysztof Kutak (Instytut Fizyki Jadrowej Polskiej Akademii Nauk)
    • 09:00 11:10
      Top Quark and Electroweak Physics: 4 Huron

      Huron

      Convener: Joao Barreiro Guimaraes Da Costa (Chinese Academy of Sciences (CN))
      • 09:00
        Measurement of the ZZ(*) and Zgamma production cross section at 8 TeV and 13 TeV and limits on anomalous triple gauge couplings with the ATLAS detector (15' + 5') 20m
        Measurements of the cross sections of the production of pairs of electroweak gauge bosons at the LHC constitute stringent tests of the electroweak sector of the Standard Model and provide a model-independent means to search for new physics at the TeV scale. The ATLAS collaboration has measured inclusive and differential cross sections of the production of ZZ pairs in final states with four charged leptons using data corresponding to 20.3 /fb at a centre-of-mass energy of 8 TeV and data corresponding to 3.2 /fb at a center-of-mass energy of 13 TeV. The studies at 8 TeV are extended to the final state of two charged leptons and two neutrinos, which enhances the acceptance at high transverse momentum. The ATLAS collaboration has also carried out detailed measurements of integrated and differential cross sections of the production of a Z boson in association with an isolated photon using data corresponding to 20.3 /fb at a centre-of-mass energy of 8 TeV. These measurements are carried out in Z boson decays to both charged lepton pairs and neutrinos. These measurements are compared to calculations at NNLO in pQCD and provide constraints on new physics, by setting limits on anomalous triple gauge couplings. The ATLAS collaboration has also carried out the analysis of the inclusive four-lepton lineshape measurement in the 8 TeV data. The study focuses on the differential cross section as a function of the 4-lepton mass spectrum ranging from 80 to 1000 GeV where several distinct physics processes give rise to the production of 4-lepton final state.
        Speaker: Bing Zhou (University of Michigan (US))
      • 09:20
        Measurement of the WW production cross section at 8 TeV and 13 TeV and limits on anomalous triple gauge couplings with the ATLAS detector (13' + 2') 15m
        Measurements of the cross sections of the production of pairs of electroweak gauge bosons at the LHC constitute stringent tests of the electroweak sector of the Standard Model and provide a model-independent means to search for new physics at the TeV scale. The ATLAS collaboration has performed detailed measurements of integrated and differential cross sections of the production of WW pairs in leptonic final states and no hadronic jets using data corresponding to 20.3 /fb at a centre-of-mass energy of 8 TeV. An extension of the measurement is presented, which covers also the WW+1jet production at 8 TeV. These measurements are compared to predictions at up to NNLO+NNLL in pQCD and provide constraints on new physics, by setting limits on anomalous triple gauge couplings. In addition new studies of WZ and WW production in the semileptonic lnujj final state at 8 TeV are presented. These extend the measurements to high transverse momenta and are particularly sensitive to anomalous triple gauge couplings. A first measurement of the WW cross section at a center-of-mass energy of 13 TeV using data corresponding to 3.2 /fb will be presented.
        Speaker: Samira Hassani (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
      • 09:35
        Measurement of the WZ production cross section at 8 TeV and 13 TeV and limits on anomalous triple gauge couplings with the ATLAS detector (13' + 2') 15m
        Measurements of the cross sections of the production of pairs of electroweak gauge bosons at the LHC constitute stringent tests of the electroweak sector of the Standard Model and provide a model-independent means to search for new physics at the TeV scale. The ATLAS collaboration has performed detailed measurements of integrated and differential cross sections of the production of WZ pairs in fully leptonic final states using data corresponding to 20.3 /fb at a centre-of-mass energy of 8TeV. These measurements include ratios of WZ pairs separated by the charge of the W boson for the first time. The results are compared to predictions at NLO in pQCD and provide constraints on new physics, by setting limits on anomalous triple gauge couplings. Finally, a first measurement of WZ cross sections at a center-of-mass energy of 13 TeV using data corresponding to 3.2 /fb will be presented including the ratios to previous ATLAS measurements at 8 TeV and between W charges.
        Speaker: Christian Gutschow (TU Dresden (DE))
      • 09:50
        Multiboson production in final states with W and Z decays at CMS (15' + 5') 20m
        We present studies of diboson production in pp collisions based on data recorded by the CMS detector at the LHC. These include precise measurements the production cross section of these processes at center-of-mass energies of 7, 8 and 13 TeV . The decay modes of the W and Z bosons are used. The results are interpreted in terms of constraints on anomalous triple and quartic gauge couplings.
        Speaker: Rafael Coelho Lopes De Sa (Fermi National Accelerator Lab. (US))
      • 10:10
        Associated production of photons and other gauge bosons at CMS (15' + 5') 20m
        We present studies of diboson and triboson production in pp collisions based on data recorded by the CMS detector at the LHC. These include precise measurements the production cross section of these processes at center-of-mass energies of 8 and 13 TeV . Final states where one or more photons are produced in association of W and Z bosons, reconstructed through their decay products, are used. The results are interpreted in terms of constraints on anomalous triple and quartic gauge couplings.
        Speaker: Joshua Milo Kunkle (University of Maryland (US))
      • 10:30
        Anomalous Higgs and Triple Gauge Couplings in the Effective Field Theory Approach (15' + 5') 20m
        Given many possible forms that physics Beyond the Standard Model (BSM) could take, it is important to pursue a bottom-up approach in which as few assumptions as possible about the BSM sector are made. In this talk, we present a combined analysis of LHC Run-I Higgs data (signal strengths) together with LEP-II WW production measurements. To characterize possible deviations from the Standard Model (SM) predictions, we employ the framework of an Effective Field Theory (EFT) where the SM is extended by higher-dimensional operators suppressed by the mass scale of new physics $\Lambda$. Working under this hypothesis, important relations among Higgs and electroweak precision observables occur. We perform the first consistent analysis at the order $\Lambda^{-2}$ in the EFT expansion keeping all the relevant operators. While the two data sets suffer from flat directions, together they impose stringent model-independent constraints on the anomalous couplings, thus showing the importance of global analysis in the EFT framework. As a side product, we provide the results of the combined fit in different EFT bases. This presentation is mainly based on the recent publication: Phys. Rev. Lett. 116, no. 1, 011801 (2016).
        Speaker: Admir Greljo (University of Zurich)
      • 10:50
        QCD corrections to vector boson pair production in gluon fusion at the LHC (15' + 5') 20m
        The study of vector boson pair (VV) production at the LHC provides some of the most interesting observables both for Standard Model (SM) and Beyond Standard Model (BSM) physics. In particular, the production of pairs of vector bosons for energies above their production threshold is of crucial importance, on one side as a direct test of the electroweak sector of the standard model and on the other, as it constitutes the natural background for many BSM searches. At the LHC, VV production proceeds mainly through quark-antiquark annihilation, but a sizeable contribution comes also from the gluon-fusion channel which, depending on the final state, can amount for around $10\%$ of the total cross-section. Despite being loop induced, the latter can be enhanced by the large gluon flux at the LHC and moreover, as the kinematically similar $gg \to H$ process, can potentially suffer from large QCD radiative corrections. In order to achieve control on the theoretical uncertainty at the precision expected to be met at the LHC, we expect therefore that the calculation of the NNLO QCD corrections to the quark-antiquark channel should be supplemented by the NLO QCD corrections in the gluon-gluon channel. A fundamental ingredient for these calculations are the two-loop QCD amplitudes for the relevant processes, whose evaluation has been an outstanding task until a recent time. In this spirit, I will present the results of our recent calculation of the NLO QCD corrections to $gg \to ZZ$ and $gg \to WW$, focussing on their impact on LHC phenomenology.
        Speaker: Lorenzo Tancredi (KIT Karlsruhe)
    • 09:20 11:00
      Dark Matter Detection: 3 Chicago 9

      Chicago 9

      Convener: Prof. Matthew Szydagis (University at Albany, State University of New York)
      • 09:20
        Lattice Gauge Theory bounds on Composite Dark Matter (20' + 5') 25m
        Models of composite dark matter, originating from a new strongly coupled dark sector, have a very interesting phenomenology. To make robust predictions in these models one often need to investigate non-perturbative effects due to the strong self interactions. Lattice field theory methods and numerical simulations are well suited for this task and contribute to a solid uncertainty quantification. As an example, the Stealth Dark Matter model contains a candidate composite dark matter particle which appears as a bosonic neutral baryon of a new SU(4) strongly coupled gauge sector. The elementary constituents of this composite state carry electroweak charges. This construction provides a mechanism to naturally reduce the strength of dark matter interactions with standard model particles: there is no magnetic moment or charge radius. However such interactions exist and can allow direct detection and collider experiments to put constraints on the model. In order to get predictions from this strongly-coupled model, numerical lattice simulations are employed and give definite results for the cross-section of the dark matter candidate with standard nuclei in detectors, dominated by the electric polarizability interaction. A universal lower bound for the mass of this composite dark matter candidate is reported around 300 GeV.
        Speaker: Enrico Rinaldi (Lawrence Livermore National Laboratory)
      • 09:45
        Dark Matter searches at the LHC and beyond (20' + 5') 25m
        Dark Matter (DM) is a long standing puzzle in fundamental physics and goal of a diverse research program. Underground and astrophysical searches and particle colliders probe different parts of the parameter space with complementary strengths. We present phenomenological comparisons of recent LHC searches with direct and indirect detection experiments using simplified models. In particular we emphasize the constraints imposed by the LHC on the apparent Fermi-LAT excess. Furthermore expected sensitivities from the Run 2 of the LHC will will probe new types of processes and and their combination with 2nd generation of direct DM experiments will be presented.
        Speaker: Bjoern Penning (Imperial College Sci., Tech. & Med. (GB))
      • 10:10
        Enhancement in wino dark matter annihilation through the radiative formation of bound states (20' + 5') 25m
        The first so-called “Sommerfeld enhancement” of neutral wino dark matter annihilation occurs when the wino mass is tuned so there is a charged wino pair bound state at the neutral wino pair threshold. For larger wino mass, the charged wino pair bound state can be formed by a radiative transition in which a pair of photons is emitted. The bound state production rate is calculated in an effective field theory framework in which the winos interact nonperturbatively through a contact interaction. The subsequent annihilation of the bound charged winos into Standard Model particles can significantly enhance the dark matter annihilation rate, increasing the prospects for indirect wino dark matter detection.
        Speaker: Evan Johnson (The Ohio State University)
      • 10:35
        Beyond the Dark matter effective field theory and a simplified model approach at colliders (20' + 5') 25m
        Direct detection of and LHC search for the singlet fermion dark matter (SFDM) model with Higgs portal interaction are considered in a renormalizable model where the full Standard Model (SM) gauge symmetry is imposed by introducing a singlet scalar messenger. In this model, direct detection is described by an effective operator m_q \bar{q} q \bar{\chi} \chi as usual, but the full amplitude for monojet + \not E_T involves two intermediate scalar propagators, which cannot be seen within the effective field theory (EFT) or in the simplified model without the full SM gauge symmetry. We derive the collider bounds from the ATLAS monojet + \not E_T as well as the CMS t\bar{t} + \not E_T data, finding out that the bounds and the interpretation of the results are completely different from those obtained within the EFT or simplified models. It is pointed out that it is important to respect unitarity, renormalizability and local gauge invariance of the SM.
        Speaker: pyungwon ko (Korea Inst. for Advanced Study (KIAS))
    • 11:00 11:30
      Break 30m
    • 11:30 13:30
      Beyond the Standard Model: 5 Chicago 7

      Chicago 7

      Convener: JiJi Fan (Brown University)
      • 11:30
        Combined analysis of effective Higgs portal dark matter models (15' + 5') 20m
        We combine and extend the analyses of effective scalar, vector, Majorana and Dirac fermion Higgs portal models of Dark Matter (DM), in which DM couples to the Standard Model (SM) Higgs boson via an operator of the form DMH†H. For the fermion models, we take an admixture of scalar ψ¯ψ and pseudoscalar ψ¯iγ5ψ interaction terms. For each model, we apply constraints on the parameter space based on the Planck measured DM relic density and the LHC limits on the Higgs invisible branching ratio. For the first time, we perform a consistent study of the indirect detection prospects for these models based on the WMAP7/Planck observations of the CMB, a combined analysis of 15 dwarf spheroidal galaxies by Fermi-LAT and the upcoming Cherenkov Telescope Array (CTA). We also perform a correct treatment of the momentum-dependent direct search cross-section that arises from the pseudoscalar interaction term in the fermionic DM theories. We find, in line with previous studies, that current and future direct search experiments such as LUX and XENON1T can exclude much of the parameter space, and we demonstrate that a joint observation in both indirect and direct searches is possible for high mass WIMPs. In the case of a pure pseudoscalar interaction of a fermionic DM candidate, future gamma-ray searches are the only class of experiment capable of probing the high mass range of the theory.
        Speaker: Prof. Anthony G Williams (CoEPP, University of Adelaide)
      • 11:50
        Dark photons in the decay of Higgs-like boson (15' + 5') 20m

        We study the dark matter particle, the dark photon (DP), in the decay of the Higgs-like boson. The nature of dark matter is maintained through the hidden sector including the effects of breaking of the scale invariance. The model is based on the additional $U^{\prime}(1)$ gauge group associated with light DP.
        The interaction between DP and quarks is mediated by the derivative of the scalar - the dilaton. The latter appears in the conformal sector which triggers the electroweak symmetry breaking.
        Upper limits are set on the DP mass, the mixing strength between the standard photon and DP. The model does allow to estimate the DP mass with the value of 4.5 MeV. The maximal value of the scale invariance breaking constant is also reported.

        Speaker: Dr Gennady Kozlov (JINR)
      • 12:10
        Search for dark matter in pp collisions with CMS (15' + 5') 20m

        Searches in CMS for dark matter in final states with invisible particles recoiling against jets, top/bottom quarks, Ws, Zs, photons are presented. Various topologies are explored, covering several specific dark-matter production modes. The combination in a simplified-model framework of various searches for direct dark matter production with the CMS detector is discussed, highlighting sensitivities of the analyses under various assumptions of DM production and complementarities with non-DM analyses.

        Speaker: Shin-Shan Yu (National Central University (TW))
      • 12:30
        Search for dark matter in pp collisions at ATLAS (15' + 5') 20m

        Results of searches for both prompt and non-prompt leptonic decays of new
        dark sector particles in proton-proton collisions with the ATLAS detector
        at a center-of-mass energy of 13 TeV are presented. Searches that
        encompass a wide range of new particle masses, lifetimes and degrees of
        collimation of leptonic decay products are discussed. The results are
        interpreted in the context of models containing new gauge bosons (dark
        photons or dark Z bosons) that give rise to lepton-jets or to more general
        displaced leptonic signatures, as well as models with a high-mass,
        right-handed neutrino that could be a viable dark matter candidate.

        Speaker: Steven Randolph Schramm (Universite de Geneve (CH))
      • 12:50
        Dark Matter with Flavor Symmetry and its Collider Signature (15' + 5') 20m
        The notion that dark matter and standard-model matter are connected through flavor implies a generic collider signature of the type 2 jets+μ±+e∓+missing energy. We discuss the theoretical basis of this proposal and its verifiability at the Large Hadron Collider, with an updated analysis utilizing the 13 TeV LHC.
        Speaker: Alexander Natale (Korea Institute for Advanced Study)
      • 13:10
        Novel Collider and Dark Matter Phenomenology of a Top-philic Z' (15' + 5') 20m
        We consider extending the Standard Model by including an additional Abelian gauge group broken at low energies under which the right-handed top quark is the only effectively charged Standard Model fermion. The associated gauge boson (Z′) is then naturally top-philic and couples only to the rest of the SM particle content at loop-level or via kinetic mixing with the hypercharge gauge boson which is assumed to be small. Working at the effective theory level, we demonstrate that such a minimal extension allows for an improved fitting of the ∼2σ excess observed in tt¯h searches at the LHC in a region of parameter space that satisfies existing collider constraints. We also present the reach of the LHC at 13 TeV in constraining the relevant region of parameter space. Additionally we show that within the same framework a suitably chosen fermion charged only under the exotic Abelian group can, in the region of parameter space preferred by the t¯th measurements, simultaneously explains the dark matter relic density and the γ-ray excess at the galactic center observed by the Fermi-LAT experiment.
        Speaker: Dr Anibal Medina (IPhT CEA Saclay)
    • 11:30 13:30
      Computing: Physics Software 1 Ontario

      Ontario

      Convener: Doris Kim (Soongsil University)
      • 11:30
        Event Reconstruction with Deep Learning (15' + 5') 20m
        The recent Deep Learning (DL) renaissance has yielded impressive feats in industry and science that illustrate the transformative potential of replacing laborious feature engineering with automatic feature learning to simplify, enhance, and accelerate raw data processing. One area where DL is particularly helpful is in detector R&D and optimization, where analyzing prototype data or studying design choices in simulation can be hampered by availability and performance of reconstruction software. I will illustrate how DL systems can provide an easy means of obtaining the metrics necessary for R&D studies. In addition to minimizing the need for code development, these techniques are automatically tuned for different design choices. As an example, I will show how DL-based reconstruction in Liquid Argon and Gas Time Projection Chambers is helping detector design choices while already out-performing traditional algorithmic reconstruction.
        Speaker: Amir Farbin (University of Texas at Arlington (US))
      • 11:50
        Fast simulation developments in CMS (15' + 5') 20m
        CMS is able to provide interpretation efficiently on large scans of new physics model parameter spaces, thanks to the availability of a fast simulation of the CMS detector, which serves as a fast and reliable alternative to the full, GEANT-based simulation. Fast simulation becomes particularly crucial with the current increase in LHC energy and luminosity. In this presentation, we will discuss the basic technical principles behind the CMS fast simulation framework, and how they are implemented in the different detector components, to simulate and reconstruct accurate physics objects. We will focus on recent developments which improve the flexibility and accuracy of the framework, and allow a better integration with the full simulation. We will then show how these developments lead to a very good agreement of fast simulation physics objects and variables with full simulation.
        Speaker: Sezen Sekmen (Kyungpook National University (KR))
      • 12:10
        The Liquid Argon Software Toolkit (LArSoft): Goals, Status and Plan (15' + 5') 20m
        LArSoft is a toolkit that provides a software infrastructure and algorithms for the simulation, reconstruction and analysis of events in Liquid Argon Time Projection Chambers (LArTPCs). It is currently used by the ArgoNeuT, LArIAT, MicroBooNE, DUNE and SBND experiments. The LArSoft collaboration has been formed to provide an environment for the development, use, and sharing of code across experiments. The ultimate goal is to develop fully automatic processes for reconstruction and analysis of LARTPC events. The toolkit is based on the art framework and has a well-defined architecture to interface to other packages, e.g., the PANDORA software development kit for pattern recognition. It is designed to facilitate and support the evolution of algorithms including their transition to new computing platforms. The development of the toolkit is driven by the scientific stakeholders involved. The core infrastructure includes standard definitions of types and constants, means to input experiment geometries as well as meta and event-data in several formats, and relevant general utilities. Examples of algorithms experiments have contributed to date are: photon-propagation and particle identification; hit finding, track-fitting and vertex finding; and shower and cluster finding analysis. We will report on the status of the toolkit, performance, plans for future work, and on how the international collaboration is progressing.
        Speaker: Ruth Pordes (Fermilab)
      • 12:30
        Automated Reconstruction, Signal Processing and Particle Identification in DUNE (15' + 5') 20m
        Liquid Argon TPC (LArTPC) technology is increasingly prevalent in large-scale detectors designed to observe neutrino scattering events induced by accelerators or by natural sources. LArTPCs consist of a very high fraction of active detector material with spatial resolutions on the order of a few millimeters. Three-dimensional interactions are imaged in multiple two-dimensional views by the process of projection onto planes of wires. The goal of automated reconstruction is to correctly classify each neutrino scattering event by the flavor of the incoming neutrino, to separate charged-current events from neutral-current and other backgrounds, and to measure the energies of the incoming neutrinos. Detection of neutrinos from supernova bursts and also seaching for nucleon decay are important uses of automated reconstruction algorithms. Because the amount of spatial detail is high and the amount of scattering is high, this reconstruction presents many challenges that are now being investigated with sophisticated techniques. Signal processing, track and shower identification, particle identification, and event classification by a variety of innovative algorithms are reviewed.
        Speaker: Tingjun Yang (FNAL)
      • 12:50
        The new ATLAS Fast Calorimeter Simulation (15' + 5') 20m
        A very large number of simulated events is required for physics and performance studies with the ATLAS detector at the Large Hadron Collider. Producing these with the full GEANT4 detector simulation is highly CPU intensive. As a very detailed detector simulation is not always required, fast simulation tools have been developed to reduce the calorimeter simulation time by a few orders of magnitude. The fast simulation of ATLAS for the calorimeter systems used in Run 1, called Fast Calorimeter Simulation (FastCaloSim), provides a parameterized simulation of the particle energy response at the calorimeter read-out cell level. It is then interfaced to the ATLAS digitization and reconstruction software. In Run 1, about 13 billion events were simulated in ATLAS, out of which 50% were produced using fast simulation. For Run 2, a new parameterisation is being developed to improve the original version: It incorporates developments in geometry and physics lists of the last five years and benefits from knowledge acquired with the Run 1 data. It uses neural network techniques to ameliorate the parameterisations as well as optimise the amount of information to be stored in the ATLAS simulation infrastructure. In this talk, we will review the latest developments of the new ATLAS Fast Calorimeter parametrisation.
        Speaker: Flavia De Almeida Dias (University of Edinburgh (GB))
    • 11:30 13:30
      Dark Matter Detection: 4 Chicago 9

      Chicago 9

      Convener: William Wester
      • 11:30
        PICO Dark Matter Searches (20' + 5') 25m
        PICO employs the unique sensitivity of fluorine based refrigerants such as C3F8 to axial-vector couplings with WIMPS. Currently the PICO collaboration is operating two bubble chambers filled with C3F8 at SNOLAB. A small bubble chamber, PICO 2L, is used to study effects of contamination of the superheated active liquid. The PICO 60, a large bubble chamber with 60kg active mass is currently in its second run aiming to ultimately reach a cross section sensitivity of 2x10-41 cm2 for interactions between WIMPs and protons. This paper will present the latest results of these two detectors and describe the future plans for PICO.
        Speaker: Carsten Krauss (University of Alberta)
      • 11:55
        Recent results of direct dark matter search with XMASS (20' + 5') 25m
        The XMASS program is a multi-purpose experiment with a large volume liquid xenon scintillator detector located 1,000m underground at Kamioka in Japan. The first generation detector, XMASS-I, employs ~830 kg of liquid xenon in an active volume. We started the first data-taking in December 2010, and the data provided various dark matter searches such as light WIMPs, inelastic WIMP-129Xe scattering, and bosonic super-WIMPs. After a year of the detector refurbishment work, data-taking was resumed in November 2013. We have recently published the results of annual modulation search with 359 live days x 832 kg of exposure accumulated after the refurbishment. In this talk, we will present the latest dark matter search results from XMASS-I.
        Speaker: Katsuki Hiraide (the University of Tokyo)
      • 12:20
        The DEAP-3600 Dark Matter Direct Detection Experiment (20' + 5') 25m
        DEAP-3600 is a single phase liquid argon (LAr) dark matter experiment, located 2 km underground at SNOLAB, in Sudbury, Ontario. The detector has 1 tonne fiducial mass of LAr. The target sensitivity to spin-independent scattering of 100 GeV WIMPs is 10$^{-46}$ cm$^{2}$. The DEAP-3600 background target is $<$ 1 background events in the WIMP region of interest in 3 tonne-years. The strategies to achieve this background are pulse shape discrimination to mitigate electron recoils, ultra-low radioactive materials for detector construction to reduce neutron and alpha backgrounds, and in-situ sanding of the acrylic vessel to mitigate radon exposure of surfaces during construction and fabrication. The WIMP search run began in 2016. This presentation gives an overview of the DEAP-3600 experiment and reports on recent results.
        Speaker: Pietro Giampa
      • 12:45
        NEWAGE direction-sensitve direct dark matter search (20' + 5') 25m
        NEWAGE is a direction-sensitive direct dark matter search experiment. NEWAGE uses a micro-TPC with a detection volume of 30 by 30 by 30 cm^3 read by one of the MPGD variations, \mu-PIC. We have been performing underground measurement since 2013 with a new detector NEWAGE-0.3b’. We published the best direction-sensitive limits in PTEP (2015) 043F01s with 30 days’ live time data. We continued the measurement and the results from half-a-year data will be presented. In order to improve the sensitivities, we are developing a low-radioactive \mu-PIC and a negative-ion TPC. These recent activities to improve the sensitivity will also be reported.
        Speaker: Prof. Kentaro Miuchi (Kobe University)
      • 13:10
        Status and prospects of the NEWS-SNO experiment (15' + 5') 20m
        A novel experiment NEWS-SNO (News Experiment With Spheres in SNOLAB) is setting up to probe low mass Dark Matter particles using a spherical gaseous detector and very light target nuclei such as H, He and Ne. Preliminary results obtained from a 60 cm diameter prototype operated with neon gas in LSM (Laboratoire Souterrain de Modane) will be given. The obtained performance paves the way forward for the larger scale detector to be installed at SNOLAB; status and expected sensitivity of the project will be presented.
        Speaker: Alvine Kamaha (Queen's University)
    • 11:30 13:30
      Education and Outreach: 1 Superior B

      Superior B

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Conveners: Azwinndini Muronga, Kate Shaw (INFN Gruppo Collegato di Udine and ICTP Trieste)
      • 11:30
        "In Particular", a podcast about physics (12' + 3') 15m
        "In Particular" is a podcast about physics and the process of discovering physics at the high energy frontier. Produced by members of the ATLAS Collaboration, the show tells the stories of particle physics from the ground level. Aimed at science enthusiasts interested in understanding what drives LHC physicists and what their work entails, "In Particular" gives a voice directly to the researchers. Details about the philosophy, production, and goals of the show will be presented.
        Speaker: Tova Ray Holmes (Lawrence Berkeley National Lab. (US))
      • 11:45
        Hard to Move Science: Using travelling exhibitions to reach national audiences (12' + 3') 15m
        This session will focus on the UK's approach to engaging national and harder-to-reach audiences with "hard to move" Big Science facilities including the Large Hadron Collider. Speakers include a particle physicist who worked on the LHC national roadshow as a PhD student, the UK's national particle and nuclear physics outreach coordinator, and an overview from the strategic communications and public engagement perspective. We know from personal experience and evaluation that few experiences can rival a visit to a large scale science facility or laboratory to generate lasting interest in science, especially among young people who are our future researchers, technicians and skilled staff. But our laboratories are not theme parks, and we must of necessity therefore limit the number of visitors for capacity, safety and operational reasons. But in practical terms this restricts access only to those able to easily travel to our locations, which in turn raises equity and diversity concerns. Our solution was to bring the facilities to the public. From our start in 2011 we are now approaching one million visitors to our series of major national roadshows: firstly in particle physics, then astronomy, crystallography and most recently lasers. Each was based on a travelling large scale exhibit: a life size replica of the Large Hadron Collider tunnel; a 1/4 scale Very Large Telescope facility, and most recently a life-size model of the Vulcan very high powered laser facility. In this session we will explain how we developed the roadshows to fit the wider UK public engagement strategy, how we engaged our researcher communities, the lessons learnt including what didn’t work as well as we’d planned, and give thoughts on how other labs may be able to adapt the model for their purposes.
        Speakers: Dr Clara Nellist (CERN), Dr Elizabeth Cunningham (Science and Technology Facilities Council), Mr Terry O'Connor (Science and Technology Facilities Council)
      • 12:00
        Forging New, Non-traditional Partnerships Among Physicists, Teachers and Students (12' + 3') 15m
        The QuarkNet collaboration has forged new, nontraditional relationships among particle physicists, high school teachers and their students. QuarkNet provides professional develop- ment for teachers and creates opportunities for teachers and students to engage in particle physics data investigations and join research teams. Embedded in the U.S. particle research community, QuarkNet leverages the nature of particle physics research—the long duration of the experiments with extensive lead times, construction periods, and data collection and analysis periods. QuarkNet is patterned after the large collaborations with a central management infrastructure and a distributed workload across university- and lab-based research groups. **We describe the important benefits of the QuarkNet outreach program that flow to *university faculty* and** present successful strategies that others can adapt for use in their countries.
        Speaker: Ms Marjorie Bardeen (Fermilab)
      • 12:15
        Outreach Activities in the Belle II Collaboration (12' + 3') 15m
        After great success of the KEKB collider and the Belle experiment, upgrade to the new intensity frontier facility, SuperKEKB and the Belle II detector, is in progress. Commissioning of the new accelerator has started, and construction of the detector is in the final stage. This brings us to an exciting moment. The Belle II collaboration has recently formed an outreach committee to raise variety of activities to attract general public audience to research works going on the detector development as well as the physics subjects, which Belle II aiming at. As the first step, we inform progress of the project with the help of social media, Facebook and Twitter, as well as a homepage dedicated for general public. We present some methods to engage more audience, such as usages of quizzes or ‘Manga’ and ‘Anime’, very popular in Japan, to explain latest research works in a simple entertaining stories. In order to get more collaborators engage in these activities, we organize some fun activities like a series of photography competition, which helps us to collect nice photographs of instrumentation as well as people working in Belle II. Other activities include science cafe style lectures, development of materials for outreach and education. In this talk, we present on these activities and how they are organized in the collaboration.
        Speaker: Prof. Toru Iijima (Nagoya University)
      • 12:30
        Art and Science convergence at Kavli IPMU (12' + 3') 15m
        The Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) runs an Artist in Residence Program, giving artists the opportunity to interact and work with astronomers, physicists and mathematicians at the institute. Based on models in the US/Europe, the Kavli IPMU has been designed not only to give artists to be welcomed to the science community, it also gives researchers the opportunity to learn the artist's skills and views. A pilot program was run in 2015 to great success, with a contemporary artist hosting three programs including a workshop for researchers, and two art exhibitions for the general public.
        Speaker: Aya Tsuboi ( The University of Tokyo Institutes for Advanced Study, )
      • 12:45
        Neutrinos and Dark Matter in the Classroom (12' + 3') 15m
        The Sanford Underground Research Facility is studying the universe from almost a mile underground in Lead, South Dakota. In order to make these cutting edge particle astrophysics experiments accessible and interesting to area students, the Education and Outreach Department has developed six short curriculum units, two each for elementary, middle and high schools. Each unit is aligned to state science standards and connects to a Sanford Lab experiment. Units are being piloted in the 2015-2016 school year and initial evaluations will be presented.
        Speaker: Dr Margaret Norris (Sanford Underground Research Facility)
      • 13:00
        Phantom of the Universe: A State-of-the-Art Planetarium Show on Dark Matter (12' + 3') 15m
        Phantom of the Universe is a planetarium show premiering in 2016 that will showcase an exciting exploration of dark matter, from the Big Bang to the Large Hadron Collider. The show will reveal the first hints of its existence through the eyes of Fritz Zwicky. Viewers will see the astral choreography witnessed by Vera Rubin in the Andromeda galaxy. They will plummet deep underground to see the most sensitive dark matter detector on Earth. From there, they will end the journey at the Large Hadron Collider, speeding alongside particles before they collide in visually stunning explosions of light and sound, and learning how scientists around the world are collaborating to track down the constituent of dark matter. The show will be offered to planetariums worldwide *free of charge*. It will feature music composed by Mickey Hart (Apocalypse Now, The Twilight Zone, The Grateful Dead) and narration by Academy-Award winning actress Tilda Swinton, and showcase the creativity and directing prowess of Joao Pequenao and the writing and producing talents of award-winning filmmaker, Carey Ann Strelecki. See a flattened preview (with resulting distortions) at: http://PhantomOfTheUniverse.com/
        Speaker: Michael Barnett (Lawrence Berkeley National Lab. (US))
      • 13:15
        Xraise: Empowering Minds with Science! (12' + 3') 15m
        Xraise, the outreach program at Cornell's Laboratory for Accelerator-based Sciences and Education, offers innovative educational experiences for thousands of participants age K-gray each year. Xraise engages minds by facilitating direct interaction with physical phenomena and encouraging careful observation of the world. These direct experiences consist of hands-on explorations that embrace the same processes that experts practice at our world-class particle accelerator laboratory. Xraise provides design-based, student-centered learning opportunities that allow students to connect their existing science knowledge to real-world challenges. Activities encourage students of all ages to integrate their own ideas, utilize feedback from direct experiences, and modify their designs based upon experimentation. During our presentation, we will describe four key outcomes of our current educational programming aligned with NSF's Broader Impact Criterion. For each outcome, Xraise will share strategies used to achieve the outcome, research supporting the strategies, examples of activities our team has implemented, and indicators of success. Highlights include reflections from our tremendously successful Mobile Science program, Lending Library materials, and ReDesigning K-12 Science initiative. The collaborative nature our work, struggles with volunteerism, and the focus for the future of our Xraise efforts will be included in the presentation. Lively discussion is strongly encouraged!
        Speaker: Lora Hine (Cornell University)
    • 11:30 13:50
      Higgs Physics: 4 Chicago 10

      Chicago 10

      Conveners: Kirill Prokofiev (The Hong Kong University of Science and Technology (HK)), Stefania Gori (Perimeter Institute/Cincinnati University)
      • 11:30
        Searches for double Higgs production or decay using the CMS detector (15' + 5') 20m
        The production of the pairs of Higgs bosons provides a direct handle on the structure of the Higgs field potential.While the HH production within the SM is very small and essentially out of the experimental reach within the Run I or II, several beyond SM theories foresee an enhancement that can be already probed with the available data. Searches for resonant and non-resonant productions of pairs of HH bosons within BSM theories made by the CMS collaboration will be presented.
        Speaker: Giacomo Ortona (Centre National de la Recherche Scientifique (FR))
      • 11:50
        Search for di-Higgs production with the ATLAS detector (15' + 5') 20m
        An enhanced production of two Higgs bosons would be a clear sign of beoynd Standard Model physics. A search is performed for resonant and non-resonant excess production, including several decay channels of the two Higgs bosons. The analysis uses about 10 fb-1 of p-p collisions at 13 TeV.
        Speaker: Tulin Varol (Southern Methodist University (US))
      • 12:10
        Single Higgs production at LHC as a probe for an anomalous Higgs self coupling (15' + 5') 20m
        The Higgs trilinear coupling $\lambda_3$ is still a missing piece in the Standard Model puzzle. Although its theoretical value can be extracted from its relation to the mass of the Higgs and the Fermi constant, its measurement through the double Higgs production is particularly challenging. We explore the possibility of probing an anomalous trilinear coupling indirectly, through the production and decay of a single Higgs. Indeed, although these processes do not depend on $\lambda_3$ at tree level, they are sensitive to the trilinear coupling at NLO. This gives us the opportunity to derive the constraints on $\lambda_3$ from several observables, like the signal strength of the various channels or the $t\bar{t}H$ cross-section.
        Speaker: Dr Pier Paolo Giardino (Brookhaven National Laboratory)
      • 12:30
        Search for invisible decay modes of the Higgs boson with the ATLAS detector. (15' + 5') 20m

        The total decay width of the Higgs boson has not yet been constrained precisely with the LHC data. Some of the width could be associated to decays to invisible particles, for example Dark Matter particles. A search for invisible decays of the Higgs boson is performed using about 10 fb-1 of p-p collisions at 13 TeV.

        Speaker: Monica Trovatelli (University of Victoria (CA))
      • 12:50
        Search for invisible decays of the 125 GeV Higgs boson using the CMS detector (15' + 5') 20m
        Recent results on searches for invisible Higgs boson decays will be presented in this talk.
        Speaker: Nicholas Wardle (CERN)
      • 13:10
        Search for high mass Higgs bosons using the ATLAS detector (15' + 5') 20m
        Several theories beyond the Standard Model, like the EWS or 2HDM models, predict the existence of high mass Higgs particles, which could decay into final states with Weak bosons. In this presentation the latest ATLAS results on these searches will be discussed, using about 10 fb-1 of p-p collisions at 13 TeV.
        Speaker: Karsten Koeneke (Albert-Ludwigs-Universitaet Freiburg (DE))
      • 13:30
        Searches for high-mass neutral Higgs bosons using the CMS detector (15' + 5') 20m
        The status of the search for neutral Higgs bosons at masses greater than 200GeV will be summarized in this talk.
        Speaker: Dr Benedikt Vormwald (Hamburg University (DE))
    • 11:30 13:35
      Joint Neutrino Physics & Astro-particle Physics and Cosmology: Astrophysics Neutrino Detection Chicago 8

      Chicago 8

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Convener: Dr Abigail Vieregg (KICP)
      • 11:30
        Highlights from the ANTARES neutrino telescope (20' + 5') 25m
        The ANTARES experiment has been running in its final configuration since 2008. It is the largest neutrino telescope in the Northern hemisphere. After the discovery of a cosmic neutrino diffuse flux by the IceCube detector, the search for its origin has become a key mission in high-energy astrophysics to which ANTARES can bring a valuable contribution. The ANTARES sensitivity is large enough to constrain the origin of the IceCube excess from regions extended up to 0.2 sr in the Southern sky. Assuming different spectral indexes for the energy spectrum of neutrino emitters, the Southern sky and in particular central regions of our Galaxy are studied searching for point-like objects and for extended regions of emission. The search program also includes multi-messenger analyses requiring time and/or space coincidences with other cosmic probes, for instance gamma rays as detected by Fermi. Recently, ANTARES has participated, with IceCube, to a high-energy neutrino follow-up of the gravitational wave signal GW150914, providing the first constraint on high energy neutrino emission from a binary black hole coalescence. Finally, ANTARES has also provided performed indirect searches for Dark Matter: the limits obtained for the spin-dependent WIMP-nucleon cross section overcome that of existing direct-detection experiments.
        Speaker: Alexander Enzenhöfer (CPPM, Marsailles, France)
      • 11:55
        Potential Sources of High-Energy Neutrinos (20' + 5') 25m
        The recent observation of TeV-PeV neutrinos by IceCube has opened a new window to the high-energy Universe. These high-energy astrophysical neutrinos are expected to originate from cosmic-ray interactions with gas and radiation. The origin of the IceCube signal is presently unknown and various Galactic and extragalactic source candidates have been proposed. Multi-messenger studies can help to decipher the underlying mechanisms of particle acceleration, propagation and production. I will highlight in my talk various source scenarios and will discuss multi-messenger constraints from cosmic-ray and gamma-ray observations.
        Speaker: Markus Ahlers
      • 12:20
        Search for Astrophysical Tau Neutrinos with IceCube (20' + 5') 25m
        High-energy (TeV-PeV) cosmic neutrinos are expected to be produced in extremely energetic astrophysical sources such as gamma ray bursts (GRBs) and active galactic nuclei (AGNs). The IceCube Neutrino Observatory at the South Pole has recently detected a diffuse astrophysical neutrino flux consistent with an all-flavor assumption. Identification of tau neutrinos among the flux is yet to occur. Though tau neutrino production is thought to be low at the source, equal fractions of neutrinos are expected at Earth due to averaged neutrino oscillations over astronomical distances. Above a few hundred TeV, tau neutrinos become resolvable in IceCube with negligible background from cosmic-ray induced atmospheric neutrinos. Identification of tau neutrinos among the observed flux is crucial to precise measurement of its flavor content, which could serve to test the fundamental neutrino properties over extremely long baselines, and possibly shed light on new physics beyond the Standard Model. I will present the analysis method and results from a recent search for astrophysical tau neutrinos in three years of IceCube data.
        Speaker: Dr Donglian Xu (University of Wisconsin-Madison)
      • 12:45
        First results from two deep Askaryan Radio Array stations (20' + 5') 25m
        The Askaryan Radio Arrray (ARA) is a planned and in parts constructed detector for ultra-high energy neutrinos, utilizing radio emission from neutrino induced particle showers. With this detection method, it will be able to employ several gigatons of South-Pole ice as a detector medium needed to efficiently discover neutrinos with energies above 10 PeV. These neutrinos carry particularly interesting information about highest energy processes in the far universe. The detector is planned to consist of 37 widely-separated antenna clusters, so-called stations. Currently, 3 stations are deployed in the ice recording transient radio waves, with two more stations assembled for deployment in the austral summer 2017/2018. In this presentation, first analysis results from data recorded by two ARA stations in the year 2013 are summarized.
        Speaker: Dr Thomas Meures (University of Wisconsin, Madison)
      • 13:10
        Particle Astrophysics with the ANITA Long Duration Balloon Payload (20' + 5') 25m
        The Antarctic Impulsive Transient Antenna (ANITA) payload has now completed its third flight, and is preparing for a fourth flight later this year. ANITA is sensitive to impulsive radio emission from the Askaryan effect in neutrino-initiated cascades within the Antarctic ice sheet, and to geomagnetically-induced radio pulses from cosmic-ray initiated air showers. We report on results from ongoing analysis of data from the three prior flights, and plans for the next flight later this year.
        Speaker: Dr Cosmin Deaconu (UChicago/ KICP)
    • 11:30 13:30
      Joint Neutrino Physics & Detector: R&D Chicago 6

      Chicago 6

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Conveners: Elizabeth Worcester, Marzio Nessi (CERN)
      • 11:30
        Precision Measurements of Fundamental Interactions in the DUNE ND (15' + 2') 17m

        The LBNF at Fermilab would deliver a 1.2MW neutrino beam to the
        DUNE experiment, allowing an unprecedented reach in neutrino oscillation
        physics and providing a unique opportunity to effect a generational advance
        in the fundamental measurements of neutrino induced fundamental interactions
        at the near site. We shall review salient topics among these interactions.
        Prospects for new physics at the near site will be presented.

        Speaker: Prof. Sanjib Mishra (University of South Carolina)
      • 11:47
        The DUNE Far Detector and ProtoDUNE (12' + 3') 15m
        DUNE, the DEEP Underground Neutrino Experiment, will be a groundbreaking experiment for long-baseline neutrino oscillation studies, and for neutrino astrophysics and nucleon decay searches. Planning of DUNE continues to proceed rapidly. The DUNE Far Detector will consist of four 10-kiloton fiducial volume modular liquid argon time-projection chambers (LArTPC) placed deep underground at the Sanford Underground Research Facility in Lead, South Dakota, USA. The Far Detector will be coupled to the LBNF multi-megawatt wide-band neutrino beam planned for Fermilab. The LArTPC technology allows for detailed reconstruction of neutrino interaction and nucleon decay final states over an energy range from a few MeV to many GeV, providing high resolution vertex determination, precision charged particle tracking, particle identification, and calorimetry. Photon detector systems embedded within the LArTPC add precise timing capabilities for non-beam events. Designs for both single phase and dual phase LArTPC have reached advanced stages; and these designs will be tested through a full-scale prototyping program called ProtoDUNE, to be executed at CERN over the next few years.
        Speaker: Alexander Himmel (Fermilab)
      • 12:02
        JUNO central detector and PMT system (12' + 3') 15m
        The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose underground experiment and the largest liquid scintillator (LS) detector going for neutrino mass hierarchy, precise neutrino oscillation parameter measurement and studies of other rare processes which include but not limited to solar neutrino, geo-neutrino, supernova neutrinos and the diffuse supernova neutrinos background. The 20kt LS central detector of JUNO is the key of the whole facility. Parallel efforts and R&D activities addressing different aspects of the central detector are being actively pursued at different collaboration institutions. We present here details on the detector design and progresses. A JUNO central detector prototype with ~55% photon-cathode coverage is under running and data analysis. Goals of the prototype include testing different large area PMTs, testing different electronics designs and detector/data analysis etc. Preliminary results including PMTs about the prototype will be presented here. In another hand, how to build/install the largest LS detector also is a big challenge for the φ35.4m acrylic sphere with a stainless steel truss and the ~17000 20’’ PMT + ~35000 3’’ PMT. This talk also will show the PMT system design, the preliminary consideration of the installation including CD, PMT etc.
        Speaker: Zhimin Wang (Institute of High Energy Physics (Beijing))
      • 12:17
        SoLid: A compact neutrino detector for very short baseline neutrino experiments (12' + 3') 15m
        The SoLid experiment is currently one of the most compact and most finely segmented neutrino detectors. Deployed near a compact and intense neutrino sources, such as the Belgian high-power BR2 research reactor, it is an ideal detector to search for sterile neutrinos signatures. A novel approach to measuring reactor anti-neutrinos was developed based on an innovative sandwich of composite Polyvynil-Toluene and 6LiF:ZnS scintillators. It consists of 5cm x 5cm x 5cm cubes of PVT, with 6LiF:ZnS foils, read out by a network of wavelength shifting fibers and MPPCs. In this talk we will review the design, the operation characteristics, and the performance of a 300 kg full-size detector prototype that was deployed and operated at 5m distance from the BR2 reactor core in 2015. The plan is to improve upon the current design and gradually extend the sensitive mass in order to complete a 1.5 tonne detector by the beginning of 2017.
        Speaker: Leonidas Kalousis (Vrije Universiteit Brussel)
      • 12:32
        Status of the STEREO experiment (15' + 5') 20m
        The re-evaluation of the theoretical anti-neutrino flux emitted by nuclear reactors revealed a deficit of about 6% between the observed flux and the expected one. This so-called reactor anti-neutrino anomaly has a statistical significance of 2.7$\sigma$, and one possible explanation to this deficit could be the existence of a light sterile neutrino state into which reactor anti-neutrino oscillate at very short distances. The STEREO project, which will be presented in this talk, aims to find an evidence of such oscillation. The measurement will take place at only few meters (9-11m) from the compact core of the Institut Laue-Langevin research reactor in Grenoble (France), which provides a large flux of electron anti-neutrinos with an energy range from 1 to 10 MeV. The sensitive volume of the STEREO detector is 2m$^3$ of organic liquid scintillator doped with Gadolinium, consisting of 6 cells stacked along the direction of the core and detecting anti-neutrinos via inverse beta decay. This setup will provide excellent sensitivity to short-baseline oscillations effects by precisely measuring any relative distortion of the anti-neutrino spectrum as a function of both energy and baseline. Close proximity to the reactor yield a high background environment that is managed through heavy shielding surrounding the detector. A water-cerenkov muon veto will be settled above the detector to tag incoming cosmic muons. The detector is currently under construction and is expected to deliver first results in 2016.
        Speaker: Stephane Zsoldos
      • 12:52
        The ESS neutrino facility for CP violation discovery (15' + 5') 20m
        The comparatively large value of the neutrino mixing angle θ13 measured in 2012 by neutrino reactor experiments has opened the possibility to observe for the first time CP violation in the leptonic sector. The measured value of θ13 also privileges the 2nd oscillation maximum for the discovery of CP violation instead of the usually used 1st oscillation maximum. The sensitivity at the 2nd oscillation maximum is about three times higher than at the 1st oscillation maximum implying a significantly lower sensitivity to systematic errors. Measuring at the 2nd oscillation maximum necessitates a very intense neutrino beam with the appropriate energy. The world’s most intense pulsed spallation neutron source, the European Spallation Source, has a proton linac with 5 MW power and 2 GeV energy. This linac also has the potential to become the proton driver of the world’s most intense neutrino beam with very high potential for the discovery of neutrino CP violation. The physics performance of that neutrino Super Beam in conjunction with a megaton Water Cherenkov neutrino detector installed ca 1000 m down in a mine at a distance of about 500 km from ESS has been evaluated. In addition, the use of such a detector will make it possible to extent the physics program to proton–decay, atmospheric neutrinos and astrophysics searches. The ESS proton linac upgrade, the accumulator ring needed for proton pulse compression, the target station optimization and the physics potential are described. In addition to the production of neutrinos, this facility will also be a copious source of muons which could be used to feed a low energy nuSTORM facility, a future neutrino factory or a muon collider. The ESS linac, under construction, will reach full operation at 5 MW by 2023 after which the upgrades for the neutrino facility could start. This project is now supported by the COST Action CA15139 "Combining forces for a novel European facility for neutrino-antineutrino symmetry-violation discovery" (EuroNuNet) as well as by EU Regional Structural Funds in the region in Sweden where the neutrino detector will be located.
        Speaker: Marcos Dracos (IPHC/IN2P3-Strasbourg)
    • 11:30 13:30
      Quark and Lepton Flavor Physics: 5 Superior A

      Superior A

      Convener: Bradley Lee Roberts (Boston University)
      • 11:30
        Updates from UTfit on the Unitarity Triangle and D mixing analyses (15' + 5') 20m
        Flavour physics represents a unique test bench for the Standard Model (SM). New analyses performed at the LHC experiments are now providing unprecedented insights into CKM metrology and new evidences for rare decays. The CKM picture can provide very precise SM predictions through global analyses. We present here the results of the latest global SM analysis performed by the UTfit collaboration including all the most updated inputs from experiments, lattice QCD and phenomenological calculations. In addition, we update the analysis of D meson mixing including the latest experimental results. We derive constraints on the parameters M12, Gamma12 and Phi12 that describe D meson mixing using all available data, allowing for CP violation. We also provide posterior distributions for observable parameters appearing in D physics.
        Speaker: Marcella Bona (Queen Mary University of London (UK))
      • 11:50
        LHCb results on CP violation in B0_{d/s} mixing and in the interference with decays (10' + 5') 15m
        Measurements of CP violation in neutral B mesons mixing and in the interference with decays are excellent probes to search for physics beyond the Standard Model. We present a selection of recent measurements performed by the LHCb experiment using the full Run 1 dataset. Among these: the measurement of the semileptonic asymmetries, Asls and Asld, the measurements of the mixing-induced CP-violating phase $\phi_s$ in the $B^0_s - \bar B^0_s$ system using $B^0_s \to J/\psi hh$ (where $h = K$ or $\pi$) and $B^0_s \to D_s^+ D_s^-$ decays, as well as several other modes including $B^0_s \to \psi(2S) \phi$. A good understanding of the pollution from sub-leading penguin topologies in the reference decay channels for the $\phi_s$ and $\sin 2\beta$ measurements can be achieved by measuring CP violation and polarization in the decay $B^0_s \to J/\psi K^*$, CP violation and branching fraction of the decay $B^+ \to J/\psi \pi^+$ and time dependent CP violation in $B^0_s \to J/\psi K^0_S$. These results together with constraints from $B^0 \to J/\psi \rho^0$ are used to put bounds on penguin pollution to $\phi_s$ and $\sin 2\beta$ measurements.
        Speaker: Paul Seyfert (Universita & INFN, Milano-Bicocca (IT))
      • 12:05
        Studies of the CKM matrix with semileptonic b-hadron decays at LHCb (10' + 5') 15m
        Exclusive semileptonic b-hadron decays are under good theoretical control, which allows precise determinations of the CKM matrix elements, |Vub| and |Vcb|. The large production of Λb baryons and Bs mesons at the LHC allows LHCb to provide complementary information in this sector with respect to the B-factories. The latest measurements of these decays at LHCb will be presented, using the full Run 1 dataset.
        Speaker: Slavomira Stefkova (London-Imperial)
      • 12:20
        Semileptonic $B_{(s)}$ decays to charmless final-states and determination of the CKM element $|V_{ub}|$ (10' + 5') 15m

        Determinations of the magnitude of the CKM element $|V_{ub}|$ by exclusive and inclusive decays are currently at odds by about three standard deviations. In this talk we report new and updated results on charmless semileptonic $B$ decays, based on the large data sample accumulated by the Belle experiment at the KEKB asymmetric-energy $e^+ e^-$ collider at KEK, Japan, which might help to clarify the experimental situation.

        We also report the first absolute measurement of ${\cal B}(B_s \to D_s X)$ via tagging at the $\Upsilon(10860)$ resonance at Belle. The tagging of $B_s^{(*)} B_s^{(*)}$ events is obtained through reconstruction of semileptonic $B_s \to D_s X \ell \nu$ events. Previous measurements of this branching fraction are limited by model-dependence or large statistical uncertainties; a model-independent measurement enables improvements to the precision of the fraction $f_s$ of $B_s$ events at the $\Upsilon(10860)$ and anchors branching fractions of other $B_s$ decays.

        Speaker: Cesar Beleno (University of Goettingen)
      • 12:35
        Non-perturbative determinations of B-meson decay constants and semi-leptonic form factors (15' + 5') 20m
        B-physics is the most promising window to find new physics in the flavor sector. One key ingredient to these searches are precise theoretical predictions derived from the Standard Model. Focusing at the nonperturbative QCD contributions, we carry out lattice QCD simulations in order to calculate B-meson decay constants and semi-leptonic form factors. Combined with experimental measurements our results enable us to determine CKM matrix elements. Here we present B and Bs meson decay constants as well as semi leptonic form factors including rare decays, CKM or GIM suppressed in the Standard Model. Our results are based on the set of 2+1 flavor domain-wall Iwasaki gauge field configurations generated by the RBC-UKQCD collaboration. Heavy b-quarks are simulated using the relativistic heavy quark action.
        Speaker: Oliver Witzel (University of Edinburgh)
      • 12:55
        Leptonic and semileptonic D decays at BESIII (10' + 5') 15m
        The BESIII Experiment at the Beijing Electron Positron Collider (BEPCII) accumulated the world's largest e+e- collision samples at 3.773 and 4.009 GeV. Based on analyses of D(s)+ to l+v, D0 to K(pi)-e+v, D+ to K^0_Le+v, D+ to K-pi+e+v and D+ to omega e+v, we report the determinations of CKM matrix elements |Vcs(d)|,the D(s)+ decay constants, the form factors of D semi-leptonic decays. These are important to calibrate the LQCD calculations of decay constant and form factors and to test the CKM unitarity.
        Speaker: Ronald Poling (University of Minnesota)
      • 13:10
        Grand unification and CP violation (15' + 5') 20m
        From a flipped SU(5) grand unification, the electroweak CP violation parameters are derived. We attempt to obtain the CKM, PMNS, and leptogenesis CP parameters in a fully unified gauge interactions.
        Speaker: Prof. Jihn E. Kim (Kyung Hee University)
    • 11:30 13:25
      Top Quark and Electroweak Physics: 5 Huron

      Huron

      Convener: Doreen Wackeroth (SUNY Buffalo)
      • 11:30
        Fit of electroweak parameters in polarized deep-inelastic scattering using data from the H1 experiment (13' + 2') 15m
        Using inclusive DIS cross sections measured with the H1 experiment at HERA, electroweak parameters of the Standard Model are probed. The cross sections were determined using longitudinally polarized lepton beams, which enhances the sensitivity to the vector couplings of the light quarks. The quark couplings and the electroweak mixing angle are probed through the $\gamma /Z$ interference. This gives access to electroweak parameters in $t$-channel exchange at virtualities up to 10000 GeV$^2$.
        Speaker: Daniel Britzger (DESY)
      • 11:45
        Dilepton Forward-Backward Asymmetry and electroweak mixing angle at ATLAS and CMS (13' + 2') 15m
        We present measurements of the forward backward asymmetry in the Drell-Yan dilepton events and a study of extracting the weak mixing angle with the data sample of pp collisions at sqrt(s) at 8 TeV collected by CMS in 2012. Thanks to the large data sample, corresponding to about 19/fb, and new techniques, statistical and systematic uncertainties are significantly improved compared with the previous measurement.
        Speaker: Jiyeon Han (University of Rochester (US))
      • 12:00
        Measurements and combinations of effective weak angle in Drell-Yan di-electron and di-muon channels at CDF and D0 (15'+5') 20m

        We present the measurements of forward-backward charge asymmetry $A_{FB} $ in
        $p\bar{p}\rightarrow Z/\gamma^{*} \rightarrow e^+ e^-/\mu^+\mu^- + X$ events
        using $\sim 10\ $fb$^{-1}$ of $ p\bar p$ data collected at $\sqrt s=1.96\ $TeV by the D0
        and CDF detectors at the Fermilab Tevatron collider. $A_{FB}$ is measured as a function
        of the invariant mass of the dilepton system to extract the effective weak mixing angle $\sin^2\theta^{lep}_{eff}$.
        In the context of the standard model, using the on-shell renormalization scheme where
        $\sin^2\theta_W = 1 - M_W^2/M_Z^2$, measurements of $\sin^2\theta^{lep}_{eff}$
        yield indirect extractions of the W mass. We discuss the recent measurement of $\sin^2\theta^{lep}_{eff}$
        using di-muon events at D0 and its combination with the di-electron channel [ PRL 115, 041801 (2015)].
        We also present the CDF-legacy measurement of $\sin^2\theta^{lep}_{eff}$ using electron pairs
        and its combination with the previous CDF-legacy measurement using muon pairs [PRD 89, 072005 (2014)].
        We also present the combination of the D0 and CDF results.

        Speaker: Willis Sakumoto (University of Rochester, Rochester NY)
      • 12:20
        LHCb results on Z FB asymmetry and top cross section (13' + 2') 15m
        By using proton-proton collision data of the LHC Run I, LHCb measured the forward-backward charge asymmetry for the process \bar q q —> Z/γ* —> mu+mu- . We will present these results, which, within the Standard Model, provide the best constrain of the effective electroweak mixing angle at hadron colliders. Additionally, the measurement of the top production cross section, also performed with LHCb Run I data, will be presented.
        Speaker: Xabier Cid Vidal (Universidade de Santiago de Compostela)
      • 12:35
        Electroweak production of single W and Z bosons at ATLAS and CMS (13' + 2') 15m
        New results on the production of single W bosons with two jets at high invariant mass at a centre-of-mass energy of 8 TeV are presented using data corresponding to 20.3 /fb. Integrated and differential cross sections are measured in many different phase space regions with varying degree of sensitivity to the electroweak production in vector boson fusion and compared to earlier results of electroweak Z boson production. The cross section for the electroweak W boson production has been extracted for both integrated and for the first time differential distributions. The results have also been used to derive limits on anomalous triple gauge couplings.
        Speaker: Marco Lisboa Leite (Universidade de Sao Paulo (BR))
      • 12:50
        Combined QCD and electroweak analysis of HERA data (13' + 2') 15m
        A simultaneous fit of parton distribution functions (PDFs) and electroweak parameters to HERA data on deep inelastic scattering is presented. The input data are the neutral current and charged current inclusive cross sections which were previously used in the QCD analysis leading to the HERAPDF2.0 PDFs. In addition, the polarisation of the electron beam was taken into account for the ZEUS data recorded between 2004 and 2007. Results on the vector and axial-vector couplings of the Z boson to u- and d-type quarks, on the value of the electroweak mixing angle and the mass of the W boson are presented. The values obtained for the electroweak parameters are in agreement with Standard Model predictions. The resulting sets of PDFs, ZEUS-EW, are in agreement with HERAPDF2.0 and give a good description of ZEUS data with polarisation taken into account.
        Speakers: Amanda Sarkar (University of Oxford (GB)), Amanda Sarkar (University of Oxford (GB)), amanda sarkar
      • 13:05
        Measurement of the e+e- -> pi+pi-pi0pi0 and e+e- -> pi+pi-eta cross sections and implications for the muon g-2 (15' + 5') 20m
        The BABAR Collaboration has an intensive program  studying hadronic cross sections in low-energy e+e- annihilations, which are accessible with data taken near the Upsilon(4S) via initial-state radiation. Our measurements allow significant improvements in the precision of the predicted value of the muon anomalous magnetic moment. These improvements are necessary for shedding light on the current ~3 sigma difference between the predicted and the experimental values. We have previously published results on a number of processes with two to six hadrons in the final state. Currently, the largest uncertainty on the calculation of the hadronic contribution in the energy region between 1 and 2 GeV stems from the e+e- -> pi+ pi- pi0 pi0 cross section. A new precise measurement of this process is presented here, together with measurement of other low-multiplicity channels, such as e+e- -> pi+ pi- eta.
        Speaker: Roland Waldi (University of Rostock)
    • 13:30 14:30
      Lunch 1h
    • 13:40 14:25
      Lunch & Learn: Engaging the public, how to make an impact. 45m Chicago 6

      Chicago 6

      Publicly funded science requires a public that values research. Physicists with expertise in public outreach will have small informal discussions with groups of people interested in learning how to engage the public.

    • 13:45 14:30
      DOE - PI Meetings: DOE/HEP Civics Presentation Chicago 8

      Chicago 8

    • 14:25 16:30
      Higgs Physics: 5 Chicago 9

      Chicago 9

      Conveners: Kirill Prokofiev (The Hong Kong University of Science and Technology (HK)), Stefania Gori (Perimeter Institute/Cincinnati University)
      • 14:25
        Phenomenology of sequestered mass generation (15' + 5') 20m
        Measurements of Higgs production and decays have revealed that most of the electroweak symmetry breaking is due to the 125 GeV Higgs boson. Similarly, we know that the Higgs is at least partially responsible for giving mass to the top and bottom quarks and the tau lepton. Much less is known about the origin of mass for the first two generations. In this talk, I discuss a framework in which the first and second generation masses originate from a second source of electroweak symmetry breaking and outline the phenomenological implications.
        Speaker: Wolfgang Altmannshofer (University of Cincinnati)
      • 14:45
        New Signatures of Flavor Violating Higgs Couplings (15' + 5') 20m
        We explore several novel LHC signatures arising from quark or lepton flavor violating couplings in the Higgs sector, and we constrain such couplings using LHC data. Since the largest signals are possible in channels involving top quarks or tau leptons, we consider in particular the following flavor violating processes: (1) pp→thh (top plus di-Higgs final state) arising from a dimension six coupling of up-type quarks to three insertions of the Higgs field. We develop a search strategy for this final state and demonstrate that detection is possible at the high luminosity LHC if flavor violating top--up--Higgs couplings are not too far below the current limit. (2) pp→tH0, where H0 is the heavy neutral CP-even Higgs boson in a two Higgs doublet model (2HDM). We consider the decay channels H0→tu,WW,ZZ,hh and use existing LHC data to constrain the first three of them. For the fourth, we adapt our search for the thh final state, and we demonstrate that in large regions of the parameter space, it is superior to other searches, including searches for flavor violating top quark decays (t→hq). (3) H0→τμ, again in the context of a 2HDM. This channel is particularly well motivated by the recent CMS excess in h→τμ, and we use the data from this search to constrain the properties of H0.
        Speaker: Xiaoping Wang (Johannes Gutenberg University Mainz)
      • 15:05
        Search for non-standard and rare decays of the Higgs boson with the ATLAS detector. (15' + 5') 20m
        Some theories predict Lepton Flavour Violating decays of the Higgs boson, while other predict enhanced decay rates in rare modes like Z-photon, J/Psi-photon and Phi-photon. Such decays are searched for using about 10 fb-1 of p-p collisions at 13 TeV.
        Speaker: Davide Gerbaudo (Universitat Autònoma de Barcelona (ES))
      • 15:25
        Search for exotic decays of the 125 GeV Higgs boson using the CMS detector (15' + 5') 20m
        Recent results on searches for exotic Higgs boson decays will be presented in this talk.
        Speaker: Maria Cepeda Hermida (CERN)
      • 15:45
        Search for the decay of the Higgs boson into two nMSSM pseudo-scalar particles. (12' + 3') 15m
        The next to MSSM theory predicts the existence of a light pseudoscalar boson "a", and the decay of the Higgs boson into a pair of such particles. This scheme is searched for in several final states relative to different decay modes of the "a" particle, using about 10 fb-1 of p-p collisions at 13 TeV.
        Speaker: Lidija Zivkovic (Institute of physics Belgrade (RS))
      • 16:00
        Searches for low-mass neutral Higgs bosons using the CMS detector (12' + 3') 15m
        Searches for additional scalars and pseudoscalar with masses below the newly discovered higgs boson h(125). These searches are motivated within several BSM theories, most significantly extensions of the non mininal extensions of the MSSM like the NMSSM, where additional scalar and pseudoscalar states are expected. The mass range from 350 MeV to 110 GeV is explored with different final states. The current status of these searches will be reviewed and prospects will be given to extend these searches in the Run2 of the LHC
        Speaker: Camilo Andres Carrillo Montoya (CERN)
      • 16:15
        Simplified Models for Higgs Physics: Singlet Scalar and Vector-like Quark Phenomenology (12' + 3') 15m
        Simplified models provide a useful tool to conduct the search and exploration of physics beyond the Standard Model in a model-independent fashion. In this work we consider the complementarity of indirect searches for new physics in Higgs couplings and distributions with direct searches for new particles, using a simplified model which includes a new singlet scalar resonance and vector-like fermions that can mix with the SM top-quark. We fit this model to the combined ATLAS and CMS 125 GeV Higgs production and coupling measurements and other precision electroweak constraints, and explore in detail the effects of the new matter content upon Higgs production and kinematics. We highlight some novel features and decay modes of the top partner phenomenology, and discuss prospects for Run II.
        Speaker: Dr Thomas Rizzo (SLAC)
    • 14:30 16:30
      Astro-particle Physics and Cosmology: Cosmic Microwave Background and Inflation Chicago 10

      Chicago 10

      Convener: Bradford Benson (Fermi National Accelerator Laboratory)
      • 14:30
        SPIDER: Exploring the dawn of time from above the clouds and News from BICEP/Keck Array CMB program(35' + 5') 40m

        SPIDER is a powerful balloon-borne instrument to map the polarization of the cosmic microwave background (CMB) at large angular scales. SPIDER targets the B-mode signature of primordial gravitational waves, with a focus on mapping a large sky area with high fidelity at multiple frequencies. SPIDER’s six monochromatic refracting telescopes (three each at 95 and 150 GHz) feed a total of more than 2000 antenna-coupled superconducting transition-edge sensors. A sapphire half-wave plate at the aperture of each telescope modulates sky polarization for control of systematics. I will discuss SPIDER’s first long-duration balloon flight in January 2015, including performance estimates and the current status of data analysis. I will also give an update on development toward SPIDER's second flight, which will feature expanded frequency coverage.

        The BICEP/Keck Array program comprises a series of telescopes at the South Pole designed to measure cosmic microwave background polarization at degree angular scales, in search of imprints of inflation. This talk will describe the latest science results and recent technical improvements enabling further growth of the program. We use BICEP2 and Keck Array data collected through 2014 in 150GHz and 95GHz bands, in combination with Planck and WMAP data to constrain a model consisting of lensed-LCDM, galactic dust and synchrotron emission, and an inflationary gravitational wave (IGW) component. An excess over lensed-LCDM is detected and is consistent with dust. No significant evidence is found for synchrotron emission. We set a 95% confidence upper limit on inflationary tensor-to-scalar ratio, r<0.09 (0.07 when combined with Planck and WMAP data). This represents the first time that limits on inflationary tensors from CMB polarization have surpassed the constraining power of CMB temperature data alone. Data acquired in the 2015 season includes that from two new 220 GHz receivers deployed in the Keck Array to enhance sensitivity to dust emission. An additional two 220 GHz receivers were fielded in January 2016. We have also developed and deployed BICEP3, a 95 GHz receiver with 10x throughput compared to BICEP2. The high-throughput design of BICEP3-class receivers will be replicated to field an array replacing the current BICEP2-class receivers in the Keck Array. The resulting experiment called BICEP Array will hold ~30,000 detectors spanning five frequency bands from 35 GHz through 270 GHz, and will perform a deep search for IGW in the presence of galactic emission and lensing foregrounds.

        Speaker: Jeffrey Filippini (University of Illinois, Urbana-Champaign)
      • 15:10
        Constraining Inflation and Neutrino Mass with CLASS (15' + 5') 20m
        We are beginning a survey to provide a robust detection and characterization of the imprint of inflationary gravitational radiation in the CMB polarization (the so-called "B modes"). The same polarization measurement will provide the ultimate CMB-based cosmic-variance-limited measurement of the optical depth to reionization. When combined with CMB temperature, lensing and Baryon Acoustic Oscillation data, the optical depth measurement will yield twofold improvements on cosmology-based estimates of the sum of the neutrino masses. To carry out the survey we have built the Cosmology Large Angular Scale Surveyor (CLASS), which is an array of millimeter-wave polarimeters sited at 5200 m in the Atacama Desert. Unique in the field of CMB polarization measurements, CLASS is especially designed to survey 70% of the sky at four frequencies and recover the CMB polarization on all angular scales relevant to inflation and reionization. In this talk I will give an overview of CLASS and discuss progress to date.
        Speaker: Tobias Marriage (Johns Hopkins)
      • 15:30
        Cosmology and particle physics with POLARBEAR and Simons Array (15' + 5') 20m
        POLARBEAR is a ground-based CMB polarization experiment that is designed to characterize the B-mode (curl component) signal both at degree and sub-degree angular-scales. The degree-scale polarization data can be used for quantitative studies on inflation, such as the reconstruction of the energy scale of inflation. The sub-degree polarization data are an excellent tracer of large-scale structure in the universe, and can be used to constrain the sum of the neutrino masses. POLARBEAR-1 started observing in the early 2012 at 150 GHz with an array of 1274 polarization-sensitive antenna-coupled tansition-edge sensor (TES) bolometers, and achieved the first detection of the sub-degree B-mode signal with CMB data alone. The upgraded receiver (POLARBEAR-2) is being developed, and will be deployed in 2016/2017 austral summer season in Atacama desert in Chile. The observation with three POLARBEAR-2 type receivers (Simons Array project) will be started in 2018. The Simons Array will create a detailed survey of B-mode polarization using three arrays each of 7588 TES bolometer arrays, and will cover three frequency bands at 95, 150, 220 GHz for foreground control. The projected constraints on a tensor-to-scalar ratio (amplitude of inflationary B-mode signal) is σ(r=0.1) = $6.0 \times 10^{-3}$ after foreground removal ($4.0 \times 10^{-3}$ (stat.)), and the sensitivity to the sum of the neutrino masses when combined with DESI spectroscopic galaxy survey data is 40 meV at 1-sigma after foreground removal (19 meV(stat.)). In this presentation we will describe the current status and the prospects of the POLARBEAR-2 receiver system and the Simons Array project.
        Speaker: MASAYA HASEGAWA (KEK)
      • 15:50
        Constraining inflation with dark matter (15' + 5') 20m
        While the detailed particle physics implementation of inflation and dark matter remains an open question, they are important pillars of the standard cosmological models. Typically these two phenomena are assumed to be unrelated as the early inflationary epoch occurs vastly earlier than the timescales over which dark matter dominates. In this talk I will discuss how the lack of direct observation of dark matter can constrain the shape and functional form of the inflationary potential energy function, without incorporating a direct relationship or coupling between these two sectors. Ultracompact mini-halos (UCMHs) are sub--galactic-scale dark matter structures that can form from the isolated gravitational collapse of large amplitude curvature perturbations. The annihilation of WIMP dark matter in the core of UCMHs can produce gamma-ray signatures, which are observable by Fermi, and they can also modify pulsar timing data via purely gravitational physics. Consequently, the non-observation of these signatures provides an upper bound on the number density of UCMHs, as well as the likelihood of large-scale fluctuations in the primordial density field. As inflation provides the Universe's initial conditions, this gives an indirect constraint on inflationary physics for scales that are radically smaller than those which can be seen in the CMB. Combining these data with Planck CMB observations, we can get much tighter constraints on the predictions of highly flexible inflation models than is possible using Planck alone. Based on arXiv:1512.04597
        Speaker: Layne Price (Carnegie Mellon University)
      • 16:10
        Probing the Electroweak Phase Transition with Colliders and Gravitational Waves (15' + 5') 20m
        Symmetries that are broken at zero temperature will typically be restored as the temperature is raised. A familiar example is the alignment of spins in a ferromagnet. Symmetry restoration may be accomplished by either a smooth crossover or a first order phase transition, i.e. bubble nucleation. In the Standard Model of particle physics, we are interested in the nature of the electroweak phase transition during which the Higgs condensate formed and the weak gauge bosons became massive. If the electroweak phase transition was first order, the collision of Higgs-phase bubbles would have generated a stochastic background of gravitational waves. I will discuss the prospects for directly detecting this signal with gravitational wave interferometry. Additionally, new particles and interactions are required in order for the phase transition to be first order. I will discuss what signals of this new physics might be seen at the LHC or future colliders. Since the 1960’s, the capture of relic neutrinos on tritium has been explored as a detection strategy, and recent advances in detector technology may finally bring a measurement within reach. A direct detection of the relic neutrinos has the potential to probe a number of fundamental neutrino properties including the Dirac / Majorana distinction, the absolute mass scale, and neutrino lifetime. Since the relic neutrinos are non-relativistic today, their direct detection would provide the first measurement of neutrinos in this kinematic regime. In principle, the same detection strategy could be used to probe keV sterile neutrino dark matter. In the talk, I will discuss the prospects and challenges for such a measurement.
        Speaker: Andrew Long (University of Chicago)
    • 14:30 16:30
      Beyond the Standard Model: 6 Chicago 7

      Chicago 7

      Conveners: Bruce Mellado Garcia (University of the Witwatersrand), Seema Sharma (Indian Institute of Science Education and Research (IN))
      • 14:30
        Electroweak scale exotica with LHCb (15' + 5') 20m
        A flexible trigger system, excellent vertex locator, ring imaging Cherenkov (RICH) detectors, and forward acceptance allow unique exotica measurements to be performed at LHC energies using data collected with the LHCb detector. A summary of results will be presented, including searches for long-lived heavy charged particles, as well as displaced particles decaying into jet pairs.
        Speaker: Pieter David (Universite Catholique de Louvain (UCL) (BE))
      • 14:50
        Composite Higgs Models and Lattice Simulations (15' + 5') 20m
        Composite Higgs models imagine a new, strongly-coupled gauge force underlying electroweak symmetry breaking. Although significant insight into these models can be gained using effective theories, lattice calculations offer a unique opportunity to study the underlying strongly-coupled dynamics from first principles. Given an ultraviolet completion of a composite Higgs model, lattice can predict the various low-energy constants of the corresponding effective theory from a handful of fundamental parameters. Lattice studies can also give more general insights into e.g. symmetry-breaking patterns, and has the chance to reveal dynamical surprises in new strongly-coupled theories. I will give a brief overview of current and future lattice work focused on application to composite Higgs scenarios.
        Speaker: Ethan Neil (University of Colorado, Boulder)
      • 15:10
        Search for new resonances involving Higgs, W or Z boson at CMS (15' + 5') 20m

        Beyond the standard model theories like composite Higgs models predict resonances with large branching fractions in a Higgs boson and a vector boson with negligible branching fractions to light fermions. We present an overview of searches for new physics containing a Higgs boson and a W or Z boson in the final state, using proton-proton collision data collected with the CMS detector at the CERN LHC. For high-mass resonances decaying to intermediate bosons, the large boost for hadronic decays gives rise to one single "merged'' jet, which can be identified through a study of its substructure consistent with the presence of two quarks, enhancing the sensitivity due to the large branching ratios for hadronic decays. B-quark identification algorithms are used in addition to identify the hadronic H decays.

        Speaker: Salvatore Rappoccio (State University of New York (US))
      • 15:30
        Search for new resonances involving a photon, Higgs, W or Z boson n pp collisions at 13 TeV at ATLAS (15' + 5') 20m

        Many extensions to the Standard Model predicts new particles decaying
        into two massive vector bosons (WW, WZ, ZZ making this a smoking gun
        signature. Searches for such diboson resonances have been performed in
        final states with different numbers of leptons and jets where new jet
        substructure techniques to disentangle the hadronic decay products in
        highly boosted configuration are being used. This talk summaries ATLAS
        searches for diboson resonances with LHC Run 2 data.

        Speaker: Nikos Konstantinidis (University College London (UK))
      • 15:50
        Constraining composite Higgs models with direct and indirect searches (15' + 5') 20m
        As a solution to the hierarchy problem the idea of a composite Higgs boson is very appealing. We present comprehensive numerical analyses of realistic four-dimensional models with the Higgs as a composite pseudo-Nambu-Goldstone boson and partial compositeness. These models feature a calculable Higgs potential allowing to calculate the Higgs mass and its vacuum expectation value. Furthermore, we consider protective custodial and flavour symmetries to reduce electroweak fine-tuning. In these kind of models there is usually a lot of room for model building. We investigate different patterns of symmetry breaking und different representations under these symmetries, all of which are of great phenomenological interest. We employ a novel numerical technique that allows us for the first time to study constraints from radiative electroweak symmetry breaking, Higgs physics, electroweak precision tests, flavour physics, and direct LHC bounds on fermion and vector boson resonances in a single framework. With these results we will comment on the present phenomenological status of these kind of models and their ability to explain experimental anomalies.
        Speaker: Christoph Niehoff (Excellence Cluster Universe, Munich)
      • 16:10
        Limits on the effective quark radius from inclusive ep scattering & contact interactions at HERA (15' + 5') 20m
        The high--precision HERA data allows searches up to TeV scales for Beyond the Standard Model contributions to electron--quark scattering. Combined H1 and ZEUS measurements of the inclusive deep inelastic cross sections in neutral and charged current $ep$ scattering are considered, corresponding to a luminosity of around 1 fb$^{-1}$. A new approach to the beyond the Standard Model analysis of the inclusive $ep$ data is presented; simultaneous fits of parton distribution functions together with contributions of ``new physics'' processes are performed. Considered are possible deviations from the Standard Model due to a finite radius of quarks, described within the quark form-factor model, or resulting from the new electron-quark interactions, in the framework of $eeqq$ contact interactions (CI). The resulting 95\% C.L. upper limit on the effective quark radius is $0.43\cdot 10^{-16}$ cm and the limits on the CI mass scales, for different CI scenarios extend up to the 10 TeV scale.
        Speaker: Aleksander Filip Zarnecki (University of Warsaw)
    • 14:30 16:30
      Computing: Physics Software 2 Huron

      Huron

      Convener: Randy Sobie (University of Victoria (CA))
      • 14:30
        CMS software and computing for LHC Run 2 (15' + 5') 20m
        The CMS offline software and computing system has successfully met the challenge of LHC Run 2. In this presentation, we will discuss how the entire system was improved in anticipation of increased trigger output rate, increased rate of pileup interactions and the evolution of computing technology. The primary goals behind these changes was to increase the flexibility of computing facilities where ever possible, as to increase our operational efficiency, and to decrease the computing resources needed to accomplish the primary offline computing workflows. These changes have resulted in a new approach to distributed computing in CMS for Run 2 and for the future as the LHC luminosity should continue to increase. We will discuss changes and plans to our data federation, which was one of the key changes towards a more flexible computing model for Run 2. Our software framework and algorithms also underwent significant changes. We will summarize the our experience with a new multi-threaded framework as deployed on our prompt reconstruction farm for 2015 and across the CMS WLCG Tier-1 facilities. We will discuss our experience with a analysis data format which is ten times smaller than our primary Run 1 format. This “mini-AOD” format has proven to be easier to analyze while be extremely flexible for analysts. Finally, we describe improvements to our workflow management system that have resulted in increase automation and reliability for all facets of CMS production and user analysis operations.
        Speaker: Kenneth Bloom (University of Nebraska (US))
      • 14:50
        Prompt physics analysis from the trigger candidates at LHCb: strategy and new dedicated "TURBO" and PID calibration streams (20' + 5') 25m
        In Run 2, LHCb will collect the largest data sample of charm mesons ever recorded. Novel data processing and analysis techniques are required to maximise the physics potential of this data sample with the available computing resources and data preservation constraints. A new data-driven technique has been developed to measure the efficiency of selection requirements relying on particle identification. This includes the persisted trigger-level variables and offline-variables to be able to evaluate the efficiency both online and in future offline if a new development of reconstruction techniques are deployed. In this talk, we describe the full analysis chain used to obtain results in near-real-time for Run 2, and the steps necessary to obtain real-time results in the LHCb upgrade. The strategy of the procedure for the particle identification calibration and its performance is also illustrated.
        Speaker: Barbara Sciascia
      • 15:15
        QEX: a framework for lattice field theories (15' + 5') 20m
        We present a new software framework for simulating lattice field theories. It features an intuitive programming interface, while simultaneously achieving high performance supercomputing, all in one programming language, Nim. With a macro system based on its abstract syntax tree, the language enables us to check and optimize our code at compile time. It also allows us to code intrinsics that map directly to machine instructions, and generates efficient native code. We will give an introduction to the high level interface of the framework, and discuss the current status of the code and future plans.
        Speaker: Xiao-Yong Jin (Argonne National Laboratory)
      • 15:35
        Managing Asynchronous Data in ATLAS's Concurrent Framework (15' + 5') 20m
        In order to be able to make effective use of emerging hardware, where the amount of memory available to any CPU is rapidly decreasing as the core count continues to rise, ATLAS has begun a migration to a concurrent, multi-threaded software framework, known as AthenaMT. Significant progress has been made in implementing AthenaMT - we can currently run realistic Geant4 simulations on massively concurrent machines. the migration of realistic prototypes of reconstruction workflows is more difficult, given the large amounts of legacy code and the complexity and challenges of reconstruction software. These types of workflows, however, are the types that will most benefit from the memory reduction features of a multi-threaded framework. One of the challenges that we will report on in this paper is the re-design and implementation of several key asynchronous technologies whose behaviour is radically different in a concurrent environment than in a serial one, namely the management of Conditions data and the Detector Description, and the handling of asynchronous notifications (such as FileOpen). Since asynchronous data, such as Conditions or detector geometry, has a lifetime different than that of event data, it cannot be kept in the Event Store. However, multiple instances of the data need to be simultaneously accessible, such that concurrent events that are, for example processing conditions data from different validity intervals, can be executed concurrently in an efficient manner with low memory overhead, and without multi-threaded conflicts.
        Speaker: Charles Leggett (Lawrence Berkeley National Lab. (US))
      • 15:55
        Novel real-time calibration and alignment at LHCb for RunII (20' + 5') 25m
        LHCb has introduced a novel real-time detector alignment and calibration strategy for LHC Run II. Data collected at the start of the fill will be processed in a few minutes and used to update the alignment, while the calibration constants will be evaluated for each run. This procedure improves the quality of the online alignment. For example, the vertex locator is retracted and reinserted for stable beam collisions in each fill to be centred on the primary vertex position in the transverse plane. Consequently its position changes on a fill-by-fill basis. Critically, this new real-time alignment and calibration procedure allows identical constants to be used in the online and offline reconstruction, thus improving the correlation between triggered and offline selected events. This offers the opportunity to optimise the event selection in the trigger by applying stronger constraints. The required computing time constraints are met thanks to a new dedicated framework using the multi-core farm infrastructure for the trigger. The motivation for a real-time alignment and calibration of the LHCb detector is discussed from both the operational and physics performance points of view. Specific challenges of this novel configuration are discussed, as well as the working procedures of the framework and its performance.
        Speaker: Roel Aaij (CERN)
    • 14:30 16:30
      Detector: R&D and Performance: Photodetectors Chicago 8

      Chicago 8

      Convener: Ingrid-Maria Gregor (DESY)
      • 14:30
        The R&D of 20 inch MCP-PMTs in China (12' + 3') 15m
        The JUNO (Jiangmen Underground Neutrino Observatory) to be built in JiangMen, Guangdong province in south China is a generic underground national lab for neutrino physics and other research fields. Its neutrino program requires a high performance large detector, which needs approximately 16,000 Photomultiplier Tubes (PMTs), that have large sensitive area, high quantum efficiency, high gain and large peak-to-valley ratio (P/V) for good single photoelectron detection. Researchers at IHEP, Beijing have conceived a new concept of MCP-PMT several years ago. The small MCP (Microchannel Plate) units replace the bulky Dynode chain in the tranditional large PMTs. In addition transmission photocathode on the front hemisphere and reflection photocathode on the rare hemisphere are fabricated in the same glass bulb to form nearly 4π effective photocathode in order to enhance the efficiency of photoelectron conversion. A number of experienced researchers and engineers in research institutes and companies related to PMT fabrication in China jointly worked on the large area MCP-PMT project. After three years R&D, a number of 8 inch prototypes were produced and their performance was carefully tested at IHEP in 2013 by using the MCP-PMT evaluation system built at IHEP. The 20 inch prototypes were followed in 2014, and its’ performance were improving a lot in 2015. The characteristics of the transmission photocathode (Trans. PC) was carefully studied by measuring the I-V curves, the quantum efficiency (QE) vs. wavelength, and by mapping the QE for both the 8 and 20 inch photocathodes. Charge spectra of single photoelectrons, timing properties of anode signals and anode linearity were measured. Noise characteristics and after pulse properties were studied at gain ~1.0×107. We are continuing simulation and experimental work to further improve our 8 and 20 inch MCP-PMT prototypes, in particular to improve the QE of the transmission photocathode and the photoelectron collection efficiency (CE) of the MCP unit. We believe for 20 inch prototypes, QE greater than 30% and CE better than 90% CE is possible.
        Speaker: shulin Liu
      • 14:45
        Pico-second Precise Photo-detectors for Particle Identification and Photon Vertex Identification (12' + 3') 15m
        High precision, large area time of flight detectors could be a key element in strategies for coping with the extreme pile-up conditions expected in the high luminosity LHC. Very high precision (O(10ps)) timing information could be used to associate photons with the correct primary interaction vertex amongst the many present in the each bunch crossing. Such systems are being developed, originally for particle identification. In this presentation, the novel TORCH time of flight detector concept will be introduced, which is designed to achieve ~15ps time resolution over areas of tens of $m^2$. Results from prototype tests in a test-beam will be presented alongside laboratory measurements of the key technology making such detectors possible: extremely fast, highly granular photon detectors and electronics. Placing a thin sheet of high Z material in front of the TORCH detector would result in high energy photons converting into electron positron pairs which then produce Cherenkov photons in a quartz radiator. Use of this combination to associate each high energy photon with its primary vertex is discussed. The TORCH concept has been proposed for particle identification by time-of-flight (ToF). One possible application is as an upgrade to the LHCb experiment to complement the particle identification capabilities of its RICH detectors. TORCH aims for a time of flight resolution better than 15ps and is designed for large-area coverage, up to 30$m^2$. TORCH has a DIRC-like construction with 10mm thick synthetic amorphous fused-silica plates as a radiator. Cherenkov photons propagate by total internal reflection to the periphery and plate edges and there are focussed onto an array of position-sensitive photo-detectors. The construction of a prototype TORCH detector and test beam measurements in a 2-10GeV mixed beam of kaons, pions and protons will also be presented. Micro-channel plate photo multipliers MCP-PMT are being developed in collaboration with industry. The anode structure is a resistive sea, capacitively coupled to readout electrodes with a segmentation of 64 x 64. For TORCH the anodes are combined to give a segmentation of 8 x 64. The resistive sea gives precisely controlled charge sharing, resulting in an effective spatial resolution of 8 x 128. The micro-channel plates have an atomic layer deposition (ALD) coating which gives an order of magnitude increase in lifetime compared to previous MCP based PMTs. Timing resolution for individual detected photons is $\sigma_t$ < 25ps. Laboratory tests of the MCP-PMT developed for TORCH and its readout electronics are also presented.
        Speaker: David Cussans (University of Bristol (GB))
      • 15:00
        Pilot Production of Large Area Picosecond Photodetectors (12' + 3') 15m
        We report pilot production results achieved for Large Area Picosecond Photodetectors (LAPPD™). The LAPPD™ is a microchannel plate (MCP) based photodetector, capable of imaging with single-photon sensitivity at high spatial and temporal resolutions in a hermetic package with an active area of 400 square centimeters. In December 2015, Incom Inc. completed installation of equipment and facilities for demonstration of early stage pilot production of LAPPD™. Initial fabrication trials commenced in January 2016. The “baseline” LAPPD™ employs an all-glass hermetic package with top and bottom plates and sidewalls made of borosilicate float glass. Signals are generated by a bi-alkali Na2KSb photocathode, amplified with a stacked chevron pair of “next generation” MCPs produced by applying resistive and emissive atomic layer deposition coatings to borosilicate glass capillary array (GCA) substrates. Signals are collected on RF strip-line anodes applied to the bottom plates which exit the detector via pin-free hermetic seals under the side walls. Prior tests show that LAPPDTMs have electron gains greater than 107, sub-millimeter space resolution for large pulses and several mm for single photons, time resolutions of 50 picoseconds for single photons, predicted resolution of less than 5 picoseconds for large pulses, high stability versus charge extraction, and good uniformity. LAPPD™ performance results for product produced during the first half of 2016 will be reviewed. In addition, recent advances in the development of LAPPD™ will also be reviewed as the baseline design is adapted to meet the requirements for a wide range of emerging application including DOE-supported R&D for the Deep Underground Neutrino Experiment (DUNE), nuclear physics applications such as EIC, medical, homeland security and astronomical applications for direct and indirect photon detection.
        Speaker: Michael Minot (Incom Inc.)
      • 15:15
        MCP-PMT photodetectors in Cryogenic Environment (12' + 3') 15m
        A number of current and upcoming neutrino and dark matter search experiments employ noble liquid or gases as the detector medium. Operating at cryogenic temperatures, these experiments rely on scintillation light from particle interactions in the medium to infer time and/or position of interaction, crucial for reconstruction and background rejection. The Argonne Microchannel Plate (MCP) Photodetector Group has successfully built and tested 6cm × 6cm active area MCP photodetectors that feature bialkali photocathodes with improved quantum efficiency, pico-second time resolution, and sub-millimeter spatial resolution. Currently, the group is developing components for the MCP photodetector suitable for scintillation detection in cryogenic liquid detectors such as liquid argon TPCs (128nm scintillation) and xenon dark matter detectors (175nm scintillation). We are also exploring ways to mitigate wave length shifting requirements and developing bare-MCP photodetectors to operate in a gaseous cryogenic environment.Status and results from this development work will be discussed.
        Speaker: Ranjan Dharmapalan (Argonne National Laboratory)
      • 15:30
        Production and Testing of a Low-Cost Precision Timing Microchannel Plate Photodetector (12' + 3') 15m
        The Argonne Microchannel Plate (MCP) Photodetector Group has produced 6cm × 6cm active area MCP photodetectors that feature fabrication with low-cost borosilicate glass, bialkali photocathodes, single photoelectron time resolution of approximately 30ps, and sub-millimeter spatial resolution. We report on the design, fabrication technology, and test results of production runs of an improved design of the detector that allows biasing of each component individually for best optimization. In addition, we have improved the quantum efficiency of the photocathode and report results from this work. The detectors are appealing for applications requiring precision timing and/or spatial resolution including time-of-flight measurement and optical time projection chambers (TPCs) in which tracks are reconstructed using Cherenkov imaging of particles produced in or entering the chamber. Prospects for incorporation into such instrumentation are discussed.
        Speaker: Jingbo Wang (Argonne National Laboratory)
      • 15:45
        Creation of economical and robust large area MCPs by ALD method for photodetectors (12' + 3') 15m
        We report a cost-effective and production doable path to fabricate robust large-area microchannel plates (MCPs), which offers the new prospective in larger area MCP-based detector technologies. We used atomic Layer Deposition (ALD) a thin film nanostructures growth technique, to independently adjust the desired electrical resistance and secondary electron emission (SEE) properties of low cost borosilicate glass capillary arrays (MCAs). These capabilities allow a separation of the substrate material properties from the amplification properties. This methodology offers the functionalization of microporous, insulating MCA substrates to produce sturdy large format MCPs with unique properties such as high gain (>1E7/MCP pair), low background noise, 10x ps time resolution, 100x micron spatial resolution and stabilization with short (2-3days) scrubbing time. The ALD self-limiting growth mechanism allows atomic level control over the thickness and composition of resistive and secondary electron emission (SEE) layers that can be deposited conformally on high aspect ratio (<100) capillary glass arrays. We have developed several robust and consistent ALD processes for the resistive coatings and SEE layers to give us precise control MCPs parameters. Further, the adjustment of MCPs resistance by tailoring the ALD material composition permits the use of these MCPs at high or low temperature detector applications. Here we discuss ALD method for MCPs functionalization and variety of MCPs testing results.
        Speaker: anil mane
      • 16:00
        An Indium Solder Flat Seal for the Assembly of Large-Area Planar MCP-based Detectors Without Vacuum Transfer of the Window (12' + 3') 15m
        In order to bring the price down of MCP-based detectors such as the LAPPD$^{TM}$, we are developing an assembly process that does not involve an expensive vacuum transfer. This process requires making a hermetic seal between the top window and the detector body during the detector bake-out in vacuum. We have demonstrated a robust technique to make a hermetic indium vacuum seal between a glass window and detector body along the 90-cm-long perimeter. In this technique, two flat glass surfaces with pre-deposited thin metalization `tie' layers are bonded together by an indium solder at the bake-out temperature of $\sim$300C. We discuss the metallurgy of the seal in which thin metallization layers on glass have been exposed to molten indium at high temperatures over an extended period of time.
        Speaker: Andrey Elagin (University of Chicago)
      • 16:15
        Photocathodes with VUV-UV-Vis full range response for fast timing and imaging applications (12' + 3') 15m
        Planar microchannel plate photomultipliers (MCP-PMTs) with bialkali photocathodes are able to achieve single photon detection with excellent time (picosecond) and spatial (millimeter) resolution. They have drawn great interests in experiments requiring time of flight (TOF) measurement and/or Cherenkov imaging. Recently, the Argonne ALD manufactured MCPs and photodetector group has demonstrated the reliable production of MCP-PMTs with 6 cm x 6 cm active area. A new thermal bialkali deposition via effusion cell technique is developed to be suitable for mass production. The performance of the photocathode has been improved by optimizing the substrate temperature and film thickness. Currently, these ALD MCP-PMTs have a response range of 300 nm – 600 nm, limited by the window transmission and cathode materials. To further support experiments which require detection of ultraviolet (UV) or even vacuum ultraviolet (VUV) photons, the Argonne photodetector group is working towards direct detection of the full spectra range by applying suitable windows and photocathodes with extended UV-VUV response. The progress on photocathode optimization, new photocathode exploration and ALD MCP-PMT performance based these photocathodes will be reported and discussed.
        Speaker: Junqi Xie (Argonne National Laboratory)
    • 14:30 16:30
      Heavy Ions: BES and Future Superior B

      Superior B

      Convener: Anne Marie Sickles (Univ. Illinois at Urbana-Champaign (US))
      • 14:30
        Results from the Beam Energy Scan (15' + 5') 20m
        The Beam Energy Scan (BES) program at the Relativistic Heavy Ion Collider (RHIC) is mainly focused on a search for the critical point and the phase boundary in the QCD phase diagram. The first exploratory phase of the BES program was successfully completed in 2014, with Au+Au collisions at center-of-mass energies ranging from 7.7 to 200 GeV. In this talk, we report the beam energy dependence of several observables including directed flow (v1), elliptic flow (v2), nuclear modification factor (RAA), and multiplicity fluctuations of net-proton, net-charge and net-kaon. The outlook for the future BES Phase-II program will also be presented.
        Speaker: Yadav Pandit (University of Illinois at Chicago)
      • 14:50
        The QCD phase diagram from lattice calculations (15' + 5') 20m
        We calculate the crossover line between the quark gluon plasma and the hadron gas phases for small real chemical potentials using lattice calculations. Since direct calculations at non-vanishing chemical potentials are hindered by the sign problem we use imaginary chemical potentials and perform analytic continuation to obtain the real $\mu$ phase diagram. We use a 4stout staggered fermion action on lattices up to a temporal extent of $N_t=16$ and perform a continuum extrapolation. In order to describe the situation in heavy ion collisions the simulation parameters are tuned such that strangeness neutrality is maintained. For the curvature of the transition line we find that there is an approximate agreement between values from three different observables: the chiral susceptibility, chiral condensate and strange quark susceptibility.
        Speaker: Sandor Katz (Eotvos University)
      • 15:10
        The curvature of the chiral pseudo-critical line from lattice QCD (15' + 5') 20m
        The study of the temperature - baryon chemical potential $T-\mu_B$ phase diagram of strongly interacting matter is being performed both experimentally and by theoretical means. The comparison between the experimental chemical freeze-out line and the crossover line, corresponding to chiral symmetry restoration, is one of the main issues. In this talk I will present our recent determination of the curvature of the chiral pseudocritical line obtained by a lattice QCD computation. At present it is not possible to perform lattice simulations at real $\mu_B$ because of the sign problem. In order to circumvent this issue, we make use of analytic continuation from an imaginary chemical potential: this approach makes it possible to obtain reliable predictions for small real $\mu_B$. By using a state-of-the-art discretization, we study the phase diagram of strongly interacting matter at the physical point for purely imaginary baryon chemical potential and zero strange quark chemical potential $\mu_s$. We locate the pseudocritical line by computing two observables related to chiral symmetry, namely the chiral condensate and the chiral susceptibility. We then perform a continuum limit extrapolation with $N_t=$6,8,10 and 12 lattices, obtaining our final estimate for the curvature of the pseudocritical line $\kappa = 0.0135(20)$. Our study includes a thorough analysis of the systematics involved in the definition of $T_c(\mu_B)$, and of the effect of a nonzero $\mu_s$.
        Speaker: Michele Mesiti (University of Pisa and INFN - Sezione di Pisa, Italy)
      • 15:30
        Fluctuations and correlations in finite temperature QCD (15' + 5') 20m

        We calculate fluctuations and correlations of conserved charges
        in finite temperature QCD up to sixth order. These are interesting
        for their sensitivity to criticality, for probing the relevant
        degrees of freedom in the QCD medium, for providing stringent
        tests on the hadron resonance gas model at low and resummed
        perturbation theory at high temperatures, and for being accessible
        to heavy ion collider experiments. They can also be used for
        the extrapolation of physical quantities to small finite chemical
        potentials. Our simulations use staggered quarks with physical
        quark masses. All of our results are extrapolated to the continuum limit.

        Speaker: Attila Pasztor (Wuppertal University)
      • 15:50
        The sPHENIX Experiment at RHIC (15' + 5') 20m
        sPHENIX is a proposal for a second generation experiment at RHIC capable of measuring jets, jet correlations and upsilons to determine the temperature dependence of transport coefficients of the quark-gluon plasma using electromagnetic and hadronic calorimetry and precision tracking. The physics program focuses on systematic measurements near the transition temperature at RHIC with a detector capable of acquiring a huge sample of events in A+A, p+A and p+p collisions with a large acceptance spectrometer and a high-rate data acquisition. Key measurements enabled by the new detector, progress on the realization of the apparatus, and possibilities for future enhancements to it, will be described.
        Speaker: Abhisek Sen (Georgia State University)
      • 16:10
        Nuclear structure from energy frontier DIS (15' + 5') 20m
        The LHeC considers electron-ion operation at 0.8 TeV cms energy which extends the kinematic range in deep inelastic lepton-nucleus scattering by 3 orders of magnitude in terms of the 4-momentum transfer $Q^2$ and $1/x$. This also exceeds by far the energy reach of a low energy electron-ion colliders currently under study. The very high energy and luminosity have the potential to thoroughly alter the understanding of the dynamics of nuclear interactions. Specifically, it will provide key information to put our quantitative understanding of the QGP on solid QCD grounds and solve the question of whether there is a saturation of the gluon density at the small $x$ achievable in present and future high-energy hadron colliders. For the first time, nuclear parton distributions can be completely resolved, independently of proton PDFs and in a huge $Q^2,x$ range. The talk will briefly also cover i) diffractive and exclusive observables in eA and the possibilities which these offer for constraining nuclear GPDs and for disentangling the mechanism of non-linear dynamics in nuclei; and ii) prospects for jet physics and for studies of QCD radiation in the nuclear medium, of much relevance for ultra-relativistic heavy-ion collisions.
        Speaker: Prof. Anna Stasto (Pennsylvania State University)
    • 14:30 16:30
      Neutrino Physics: DBD I Chicago 6

      Chicago 6

      Convener: Francesc Monrabal (University of Texas at Arlington)
      • 14:30
        Nuclear Matrix Elements for Neutrinoless Double Beta Decay (15' + 5') 20m
        At present, calculated nuclear matrix elements for neutrinoless double-beta decay carry a theoretical uncertainty that is hard to quantify but is at least a factor of two or three. That level of uncertainty makes planning and interpreting experiments difficult. Recent progress in nuclear theory and the organization of the theory community, however, should allow more accurate calculations with better estimated errors in the next few years. I describe new methods and the collaborative effort to apply them to double-beta decay.
        Speaker: Jonathan Engel (University of North Carolina)
      • 14:50
        Results and Status from KamLAND-Zen (15' + 5') 20m
        The KamLAND-Zen (KamLAND Zero-Neutrino Double-Beta Decay) experiment, located in Kamioka mine, in Japan, is one of the leading experiments for the search of $0¥nu¥beta¥beta$ decay in $^{136}$Xe dissolved in the liquid scintillator (LS). In 2011, initial $0¥nu¥beta¥beta$ decay search with high sensitivity was quickly achieved, owing to the extremely low radioactivity in the already existing KamLAND detector. Based on initial 213.4-day dataset (phase-1, October 2011-June 2012), we set a lower limit on the $0¥nu¥beta¥beta$ decay half-life of $T^{0¥nu}_{1/2} >$ 1.9$¥times$10$^{25}$ yr at 90¥% C.L. Since the sensitivity in phase-1 was limited by a background contribution from $^{110m}$Ag, we purified LS and Xe gas aiming at the reduction of $^{110m}$Ag. The preliminary results based on 114.8-day dataset (phase-2, December 2013-May 2014) after the purification were reported in 2014 and we obtained that $^{110m}$Ag background peak was reduced by more than a factor of 10. By combining phase-1 and phase-2 data, we reported a preliminary lower limit on the $0¥nu¥beta¥beta$ decay half-life of $T^{0¥nu}_{1/2} >$ 2.6$¥times$10$^{25}$ yr at 90¥% C.L. At the end of 2015, we removed a 3.08-m-diameter spherical inner balloon from KamLAND detector and this event corresponds to the end of KamLAND-Zen 400 dataset. The $0¥nu¥beta¥beta$ decay search sensitivity will steadily increased by accumulating additional low background data after the last report. Furthermore, we are preparing for the next phase, KamLAND-Zen 800 to realize the better sensitivity, about 2 $¥times$10$^{26}$ yr in a 2 year measurement. The enlarged inner balloon is newly constructed to increase the Xe amount to 800kg and cleaner material for the inner balloon can achieve lager fiducial volume. In this talk, a review of the KamLAND-Zen 400 results will be given, followed by a report on the ongoing operations for the preparation of KamLAND-Zen 800.
        Speaker: Jonathan Ouellet (MIT)
      • 15:10
        Search for Neutrinoless Double Beta Decay with the GERDA experiment: Phase II (15' + 5') 20m
        The neutrinoless double beta decay ($0\nu\beta\beta$) is a lepton number violating process and if observed it would be a demonstrate the presence of a Majorana term in the neutrino mass. The GERmanium Detector Array (GERDA) experiment, located at the Gran Sasso underground laboratory in Italy, is built for the search of $0\nu\beta\beta$ decay in $^{76}$Ge. GERDA operates bare high purity germanium detectors submersed in liquid Argon (LAr). Phase I of the experiment was successfully completed reaching an exposure of about 21 kg$\cdot$yr with the best background level in the field (if normalized to region of interest) of $10^{-2}$ counts$/$(keV$\cdot$kg$\cdot$yr). GERDA Phase I set a limit on the $0\nu\beta\beta$ decay of $^{76}$Ge of $T_{1/2}^{0\nu} > 2.1 \cdot 10^{25}$ yr. In Phase II 35 kg of germanium detectors enriched in $^{76}$Ge will be operated to reach an exposure of 100 kg$\cdot$yr. The design goal of Phase II is to reduce the background by one order of magnitude to reach the sensitivity for $T_{1/2}^{0\nu} = \mathcal{O} (10^{26} )$ yr. The Phase II setup comprises thirty newly produced Broad Energy Germanium (BEGe) detectors. The BEGe detectors will contribute to the background reduction with better energy resolution and enhanced pulse shape discrimination capabilities. To achieve the necessary background reduction, the setup was also complemented with LAr veto. The hardware upgrade for Phase II was finished and all detectors were deployed in December 2015. We plan to present the first assessment of the performance of Phase II.
        Speaker: Jozsef Janicsko Csathy (Technische Unversitat Munchen)
      • 15:30
        Recent Results and Status of EXO-200 and the nEXO Experiment (15' + 5') 20m
        The EXO-200 experiment has made both the first observation and the most precisely measured half-life of any double-beta decay to date, as well as already provided one of the most sensitive searches for the neutrino-less mode of this decay (0vbb). It consists of an extremely low background time projection chamber containing ~150 kg of enriched liquid Xe-136. Using the first two years of data, EXO-200 has been producing various physics results including a lower limit on the 0vbb half-life of 1.1x10^{25} years at a confidence level of 90%, stringent limits to searches for exotic physics, such as the emission of Majoron particles, and to the double-beta decay to the excited state of the daughter nucleus Ba-136, as well as detailed studies of the backgrounds and the mobility of ions in liquid xenon. The experiment has experienced a brief hiatus in operations during a temporary shutdown of its host facility, the Waste Isolation Pilot Plant, but has already restarted data taking. This talk will cover the main analyses of the EXO-200 data, an update on the current status of the detector and a brief overview of the nEXO experiment, a 5-tonne detector designed as part of the next generation of searches for 0vbb.
        Speaker: Caio Licciardi (nEXO)
      • 15:50
        Results of CUORE-0 and Prospects of the CUORE Experiment (15' + 5') 20m
        CUORE-0 is a cryogenic detector that uses an array of tellurium dioxide bolometers to search for neutrinoless double-beta decay of Te-130. The detector consists of 52 TeO2 crystal bolometers held in a ultra-pure copper frame and it was assembled using the new low-background techniques developed for CUORE. Using bolometers operated at ∼ 10 mK provides excellent energy resolution (< 0.2% FWHM) at the neutrinoless double-beta decay Q-value. CUORE-0 is located at the Laboratori Nazionali del Gran Sasso in Italy and has been taking data since March 2013. We will present the experiment and its neutrinoless double-beta decay search results with a 9.8 kg·yr exposure of Te-130. We will also discuss the prospects of CUORE, which has a Te-130 mass 19 times greater than that of CUORE-0. CUORE is in the final stages of the construction and scheduled to begin data-taking in 2016.
        Speaker: Kyungeun Lim (Yale University)
      • 16:10
        Status of the AMORE double beta decay experiment (15' + 5') 20m
        The AMoRE (Advanced Mo-based Rare process Experiment) project is an international collaboration experiment searching for neutrinoless double beta decay of Mo-100 using a cryogenic technique with Mo-100 enriched and Ca-48 depleted calcium molybdate (48deplCa100MoO4) crystal scintillators. A pilot experiment is running with 1.5 kg of 48deplCa100MoO4 crystals in simultaneous heat and light detection at the Yangyang underground laboratory. Significant improvement of effective Majorana neutrino mass sensitivity at the level of inverted hierarchy of neutrino mass, ~20 meV, could be achieved by AMoRE-II with 200 kg of 48deplCa100MoO4 crystals. An overview of the AMoRE project and status of the pilot experiment will be presented.
        Speaker: HongJoo Kim (Kyungpook National University)
    • 14:30 16:30
      Quark and Lepton Flavor Physics: 6 Superior A

      Superior A

      Convener: Aida El-Khadra (UIUC)
      • 14:30
        Physics potential and prospects at SuperKEKB/Belle II (10' + 5') 15m
        The Belle II experiment, being constructed at the KEK laboratory in Japan, is a substantial upgrade of both the Belle detector and the KEKB accelerator. The Belle II experiment aims to record 50 ab$^{-1}$ of data, a factor of 50 more than the Belle experiment. This large data set will be accumulated with low backgrounds and high trigger efficiencies in a clean e+ e- environment and will provide unprecedented sensitivity to new physics signatures in $B$ and $D$ meson decays as well as $\tau$ lepton decays. This talk will review the physics capabilities of this experiment.
        Speaker: Bryan FULSOM (Pacific Northwest National Laboratory)
      • 14:45
        Neutral $B_{(s)}$-mixing matrix elements from lattice QCD for the Standard Model and beyond (15' + 5') 20m

        I present the first results from three-flavor lattice QCD for the hadronic matrix elements for neutral $B_{(s)}$-meson mixing in and beyond the Standard Model, including a complete error budget for each matrix element. Because $B_{(s)}$-meson mixing proceeds via flavor-changing neutral currents, it is potentially sensitive to new physics. We compute the complete basis of matrix elements, at leading order in the electroweak operator product expansion, needed to make predictions in the Standard Model and beyond. From our matrix element results we derive a host of phenomenologically interesting quantities, including the most precise determination to date of the CKM matrix elements $|V_{td}|$, $|V_{ts}|$, and their ratio $|V_{td}/V_{ts}|$, as well as Standard Model predictions for $B_{(s)}-\bar B_{(s)}$ oscillation frequencies and the rare decay branching fractions $\mathcal B(B_{(s)} \to \mu\bar\mu)$. I will discuss several 2 to 3 standard deviation tensions between Nature and the Standard Model expectations based on our results.

        Speaker: Ruth Van de Water (Fermilab)
      • 15:05
        Mixing and CP-violation in the Bd and Bs systems at ATLAS (10' + 5') 15m
        Abstract: Search for deviations from the standard model is performed in the systems of the neutral B mesons. The Bs system is studied in the decay into J/psi phi. The mixing phase phi_s and the width difference DeltaGamma_s are determined through the simultaneous study of angular distributions in the final state and of the decay time, performed together with flavour tagging at production. The measurement performed by ATLAS with the full LHC Run-1 sample is discussed and compared to the previous world average. The width difference DeltaGamma_d in the Bd system is obtained from the comparison of the decay time distributions in the flavour specific state J/psi K* and in the CP eigenstate J/psi KS. The result obtained from the full sample of data collected by ATLAS at 7 and 8 TeV is the most accurate single measurement of the width difference currently available.
        Speaker: Andrew Mark Wharton (Lancaster University (GB))
      • 15:20
        Direct CP violation in K-> pi pi decays and supersymmetry (15' + 5') 20m

        New lattice QCD results from the RBC-UKQCD collaboration have opened the door for a reliable
        theory analysis of $\epsilon_K^\prime$, which quantifies direct CP violation
        in $K\to \pi\pi$ decays. The Standard-Model (SM) prediction disagrees with
        the measurement by 2.9 standard deviations. While in most models of new
        physics the data on indirect CP violation (characterized by the
        well-understood quantity $\epsilon_K$) preclude sizable effects in
        $\epsilon_K^\prime$, large effects are possible in the Minimal
        Supersymmetric Standard Model.

        Speaker: Ulrich Nierste (KIT)
      • 15:40
        Current status of $\epsilon_K$ in lattice QCD (15' + 5') 20m
        We present most updated results of the indirect CP violation parameter $\epsilon_K$ calculated using lattice QCD inputs such as $B_K$, $\xi_0$, $V_{cb}$, $V_{us}$. We find 3.4 sigma tension between the theoretical prediction and the experimental value. An interpretation of the difference is given and future work will be laid out.
        Speaker: Weonjong Lee (Seoul National University)
      • 16:00
        Measurement of the CKM angle γ at LHCb (10' + 5') 15m
        The CKM angle γ is the least known angle of the unitarity triangle, and the only one easily accessible at tree level. The ultimate goal of degree level precision requires exploitation of all possible channels and techniques. We present here the latest results on the CKM angle γ on a diverse range of decay modes and techniques. Included are the measurement of γ from the $B \to DK$ and related modes in a variety of different $D$ decay modes and from Dalitz plot analysis of $B^0 \to DK \pi$ and the GGSZ style measurement of the $B^0 \to DK^*$ decay. We also present the combination of all LHCb γ related measurements which is the most precise single experiment combination.
        Speaker: Sneha Sirirshkumar Malde (University of Oxford (GB))
      • 16:15
        Prospects for the determination of the CKM angle gamma from Dalitz plot analysis of B+- -> D K+- pi0 decays (10' + 5') 15m
        The Dalitz plot analysis technique has proven to be a powerful approach to determine the angle $\gamma$ of the CKM Unitarity Triangle. In this talk, we re-examine the potential for a measurement of $\gamma$ from Dalitz plot analysis of $B^\pm \to D K^\pm \pi^0$ decays in the light of recent experimental results.
        Speaker: Timothy Gershon (University of Warwick (GB))
    • 14:30 16:30
      Strong Interactions and Hadron Physics: W/Z LHC and jets Ontario

      Ontario

      Conveners: Emily Laura Nurse (University of London (GB)), Robert Schoefbeck (Ghent University (BE))
      • 14:30
        W and Z inclusive and differential cross sections at ATLAS (20' + 5') 25m
        Merged abstract
        Speaker: Mykhailo Lisovyi (PI Heidelberg University (DE))
      • 14:55
        W and Z inclusive and differential cross sections at CMS (20' + 5') 25m
        The production of W and Z bosons is studied in pp collisions using data collected by the CMS experiment during Run I & II. The total and differential cross sections measured inclusively in terms of jet multiplicity will be discussed along with specific studies on the W boson charge asymmetry and vector boson couplings extraction.
        Speaker: Norbert Neumeister (Purdue University (US))
      • 15:20
        Z boson asymmetry and strangeness at D0 (8' + 2') 10m
        Merged abstract
        Speaker: Braden Keim Abbott (University of Oklahoma (US))
      • 15:30
        Multi-jets at the LHC (15' + 5') 20m
        Merged abstract
        Speaker: Hans Van Haevermaet (University of Antwerp (BE))
      • 15:50
        Inclusive jets, dijets and heavy flavour jets at the LHC (15' + 5') 20m
        Merged abstract
        Speaker: Claire Gwenlan (University of Oxford (GB))
      • 16:10
        PDFs and hard QCD at HERA (15' + 5') 20m
        Merged abstract
        Speaker: Vladimir Chekelian (MPI for Physics, Munich)
    • 16:30 17:00
      Break 30m
    • 17:00 19:00
      Beyond the Standard Model: 7 Chicago 7

      Chicago 7

      Conveners: Bruce Mellado Garcia (University of the Witwatersrand), Seema Sharma (Indian Institute of Science Education and Research (IN))
      • 17:00
        Search for new physics in dijet and multijet final states with CMS and ATLAS (15' + 5') 20m

        Run 2 of the LHC offers unparallelled potential to discover new physics (NP).
        As NP is often considered to couple to the strong force, jet based searches
        provide exciting opportunities. The latest ATLAS and CMS search results in inclusive
        and heavy-flavour high transverse momentum jet searches will be presented.

        Speaker: Saptaparna Bhattacharya (Northwestern University (US))
      • 17:20
        Search for heavy bosons with dileptons in pp collisions at 13 TeV at ATLAS (15' + 5') 20m

        A search is conducted for both resonant, and non-resonant new phenomena in
        the dilepton final state, using the ATLAS experimental data. Resonance
        interpretations are given for a Z' or Graviton, while Contact Interactions
        are considered for the non-resonant interpretation, with the dilepton
        invariant mass used as the discrimination variable throughout. The full LHC
        2015 proton-proton dataset is combined with the data which has been
        collected so far during 2016, at sqrt(s) = 13 TeV.

        Speaker: Heberth Jesus Torres Davila (Simon Fraser University (CA))
      • 17:40
        The Unitarity Triangle analysis beyond the Standard Model: updates from UTfit (15' + 5') 20m
        The Unitarity Triangle (UT) analysis can be used to constrain the parameter space in possible new physics (NP) scenarios. We present an update of the UT analysis beyond the SM by the UTfit collaboration. Assuming NP, all of the available experimental and theoretical information on Delta F=2 processes is combined using a model-independent parametrisation. We determine the allowed NP contributions in the kaon, D, Bd, and Bs sectors and, in various NP scenarios, we translate them into bounds for the NP scale as a function of NP couplings.
        Speaker: Marcella Bona (Queen Mary University of London (UK))
      • 18:00
        Search for the production of vector-like quarks at CMS (15' + 5') 20m

        We present searches for vector-like quarks that only couple to light generation quarks, in LHC proton-proton collisions using the CMS experiment. Vector-like quarks are generally considered to mix significantly only with quarks of the third generation. However, cancellations among different vector-like quark contributions can relax constraints on mixing with lighter generations, leaving room for new quarks with sizable couplings to the light quarks. The heavy vector-like quarks can decay to a W, Z or H boson and a quark of the first generation. We use two approaches: an inclusive search for single and pair production, and an exclusive search for pair production with kinematic fit to exclusive channels. Final states with at least one muon or one electron are considered. Results are combined for single and pair production processes.

        Speaker: Julie Hogan (Brown University (US))
      • 18:20
        Search for new quarks with the ATLAS detector (15' + 5') 20m

        New quarks appear in many beyond the Standard Model trying to cancel the
        mass divergence for the Higgs boson. The current status of the ATLAS
        searches for single production of such news quarks will be reviewed,
        addressing the used analysis techniques, in particular the selection
        criteria, the background modelling and the related experimental
        uncertainties. The phenomenological implications of the obtained results
        will also be discussed.

        Speaker: Georges Azuelos (Universite de Montreal (CA))
      • 18:40
        Little Conformal Symmetry (15' + 5') 20m
        Given the lack of conventional SUSY signals in the LHC data, a more complicated story may be required to explain weak scale physics. I will present a new class of natural models which ensure the one-loop divergences in the Higgs mass are cancelled. The top-partners that cancel the top loop are new gauge bosons, and the symmetry relation that ensures the cancellation arises at an infrared fixed point. Such a cancellation mechanism can, a la Little Higgs models, push the scale of the new physics that completely solves the hierarchy problem up to 5-10 TeV. When embedded in a supersymmetric model, the stop and gravitino masses provide the cutoffs for the loops, and the mechanism ensures a cancellation between the stop and gaugino mass dependence of the Higgs mass parameter.
        Speaker: Rachel Houtz (UC Davis)
    • 17:00 19:15
      Detector: R&D and Performance: Generic R&D Chicago 8

      Chicago 8

      Convener: Marzio Nessi (CERN)
      • 17:00
        High Luminosity LHC Pixel Readout Test Chip and RD53A Prototype Plans (12' + 3') 15m
        A pixel readout test chip called FE65-P2 has been fabricated on 65nm CMOS technology and tested with and without bump bonded sensors. FE65-P2 contains a matrix of 64 x 64 pixels on 50 micron by 50 micron pitch, designed to read out a bump bonded sensor. The goals of FE65-P2 are to demonstrate excellent analog performance, isolated from digital activity well enough to achieve 500 electron stable threshold, and radiation hard to at least 500Mrad, and to prove the novel concept of isolated analog front ends embedded in a flat digital design, called “analog islands in a digital sea”. Each analog island is completely surrounded by digital circuitry, which is generated by automated place and route tools and will therefore be different around every island. FE65-P2 is about 4mm x 3mm and was produced in a multi-project run. Matching sensors are bing produced by several labs/manufactures, including Stanford, FBK, and Hamamatsu, and will be single-die bump bonded to FE65-P2. Results of these hybrid assemblies before and after irradiation and in test beams are expected to be available for ICHEP. Experience from FE65-P2 chip and hybrid assemblies will be applied to the design for a large format readout chip, called RD53A, to be produced in a wafer run in early 2017 by the RD53 collaboration. The status of RD53A will also be covered.
        Speaker: Mauricio Garcia-Sciveres (Lawrence Berkeley National Lab. (US))
      • 17:15
        Micro Pattern Gas Detector Technologies and Applications - the work of the RD51 Collaboration (12' + 3') 15m
        Micro Pattern Gas Detector Technologies and Applications: an overview of the CERN-RD51 Collaboration activities Driven by the availability of modern photolithographic techniques, Micro Pattern Gas Detectors (MPGD) have been introduced at the end of the 20th century by pioneer developments: Microstrip Gas Chambers (MSGC), Gas Electron Multipliers (GEM) and Micromegas, later followed by thick-GEM (THGEM), resistive GEM (RETGEM) and other novel micro-pattern devices. Nowadays intensive R&D activities in the field of MPGDs and their diversified applications are pursued by the large CERN- RD51 collaboration. The aims are to facilitate the development of advanced gas-avalanche detector concepts and technologies and associated electronic-readout systems, for applications in basic and applied research. MPGD systems now offer robustness, very high rate operation, high precision spatial resolution (sub 100-micron), and protection against discharges. MPGDs became important instruments in current particle-physics experiments and are in development and design stages for future ones. They are significant components of the upgrade plans for ATLAS, CMS, and ALICE at the LHC, exemplifying the beneficial transfer of detector technologies to industry. Beyond their design for experiments at future facilities (e.g. ILC), MPGDs are considered for rare-event searches, e.g. dark matter, double beta decay and neutrino scattering experiments. Detectors sensitive to x-rays, neutrons and light are finding applications in other diverse areas such as material sciences, hadron therapy systems, homeland security etc. The areas of research activities within the RD51 MPGD collaboration includes detector physics & technology, model simulations, , readout electronics, production techniques, common test facilities, and applications. By this broad coverage RD51 brings together leading experts in the field of detector science and detectors users, resulting in effective progress over a wide array of applications. This talk will review the activities of the RD51, its major accomplishments so far, and future plans.
        Speaker: Filippo Resnati (CERN)
      • 17:30
        Status of R&D of the ANKOK project: Low mass WIMP search using double phase argon detector (12' + 3') 15m
        Liquid argon is known as an excellent target material for WIMP dark matter direct search experiment. Use of its ionization and scintillation signals, and scintillation pulse shape provides strong discrimination between the electron and nuclear recoil events. Relatively small atomic mass (A=40) gives higher nuclear recoil energy for WIMP-Ar nuclear scattering, thus it potentially has higher sensitivity for low mass WIMP (~10 GeV/c2). On the other hand, the 128 nm VUV scintillation light of argon is relatively hard to detect with nominal photo sensors, and use of wavelength shifter lowers the light detection efficiency and likewise the spatial resolution of the reconstructed event. At present, there are no liquid argon detectors which prove their sensitivities for the low mass WIMP. The ANKOK project is a new dark matter search experiment in Japan using the double phase liquid argon detector which is specialized for the low mass WIMP detection. We are currently proceeding R&D efforts to establish its physics sensitivity, such as understanding of the liquid argon scintillation and ionization process for very low energy deposition (~20 keV) and development of the new photo-sensor which has direct sensitivity for the 128 nm VUV light. In the next few years, we are targeting to construct a detector with fiducial mass of several tens of kg, and to collect the underground physics data to search for low mass WIMP. In this presentation, we will report R&D status and future plan of the ANKOK project.
        Speaker: Masashi Tanaka (Waseda University)
      • 17:45
        Resistive Micromegas for the Muon Spectrometer Upgrade of the ATLAS Experiment (12' + 3') 15m
        Large size resistive Micromegas detectors will be employed for the first time in high-energy physics experiments for the Muon Spectrometer upgrade of the ATLAS experiment at CERN. The current innermost stations of the muon endcap system, the Small Wheel, will be upgraded for LHC Run3 and for HL-LHC to retain the good precision tracking and trigger capabilities in the high background environment expected with the upcoming luminosity increase of the LHC. Along with the small-strip Thin Gap Chambers (sTGC) the “New Small Wheel” will be equipped with eight layers of Micromegas (MM) detectors arranged in multilayers of two quadruplets, for a total of about 1200 m$^2$ detection planes. All quadruplets have trapezoidal shapes with surface areas between 2 and 3 m$^2$. The Micromegas system will provide both trigger and tracking capabilities. In order to achieve a 15% transverse momentum resolution for 1 TeV muons, a challenging mechanical precision is required in the construction of each plane of the assembled modules, with an alignment of the readout elements (the strips) at the level of 30 $\mu$m along the precision coordinate and 80 $\mu$m perpendicular to the plane. Each Micromegas plane must achieve a spatial resolution better than 100 $\mu$m independent of the track incidence angle and operate in an inhomogeneous magnetic field (B < 0.3 T), with a rate capability up to ~15 kHz/cm$^2$ In the recent years, the achievement of the required performance has been demonstrated with dedicated test-beams performed on small (10×10 cm$^2$) and medium size (1×0.5 m$^2$) resistive Micromegas detectors. In the next months the first full size prototypes (modules-0) will be completed and will be subjected to a thorough validation phase. After a brief review of the performance studies of small prototypes, demonstrating the excellent characteristics of the detectors, the Modules-0 construction procedures will be reviewed along with the results of the validation tests obtained with X-rays, cosmic ray tracks and with high-energy particle beams.
        Speaker: Mauro Iodice (INFN - Sezione di Roma Tre)
      • 18:00
        Test beam results of 3D detectors constructed with single-crystal and poly-crystalline diamond (12' + 3') 15m
        Results from prototypes of a novel detector using chemical vapour deposited (CVD) diamond and resistive electrodes in the bulk forming a 3D diamond device will be presented. The electrodes of the device were fabricated with laser assisted phase change of diamond into a combination of diamond-like-carbon, amorphous carbon and graphite. The connections to the electrodes of the 3D device were made using a photo-lithographic process. A detector system consisting of 3D devices, one based on single-crystal CVD diamond and one based on poly-crystalline CVD diamond were connected to a multi-channel readout and successfully tested in a 120 GeV proton beam at CERN proving for the first time the feasibility of the 3D diamond detector concept for particle tracking applications. Subsequent tests have refined our understanding of the charge sharing between 3D cells and the position resolution of these devices. The electrical properties and beam test results of the prototype devices will be presented.
        Speaker: Rainer Wallny (Eidgenoessische Tech. Hochschule Zuerich (CH))
      • 18:15
        Precision radiation detectors for cutting edge research projects developed at the MPS Semiconductor Lab (12' + 3') 15m
        Max Planck Society Semiconductor Laboratory is actively pushing present scientific frontiers by providing sensors for the cutting edge research projects. Main focus of the Lab is the development of commercially not available silicon sensors for different scientific projects. The sensor technology of the Lab is specially adapted to the requirements of semiconductor radiation detectors providing the ability to build wafer size defect free double sided detectors on the ultrapure silicon. Three device types developed at our Lab will be described (pnCCDs, DEPFETs, SiPMs). Examples of developed and planned detector systems will be given for some selected applications: High energy particle physics (BELLE II, ILC), Astrophysics (eROSITA, BepiColombo and ATHENA), synchrotron beamline instrumentation (LCLS, XFEL). Future perspectives of mentioned sensor concepts will be outlined.
        Speaker: Jelena Ninkovic (MPG Halbleiterlabor)
      • 18:30
        Taking the CCDs to the ultimate performance for low threshold experiments (12' + 3') 15m
        Scientific grade CCDs show atractive capabilities for the detection of particles with small energy deposition in matter. Their very low threshold of approximately 40 eV (5 sigma) and their good spatial reconstruction of the event are key properties for currently running experiments using this technology: CONNIE experiment aiming the detection of the neutrino-nucleus coherent interaction using nuclear reactor antineutrinos, and DAMIC experiment focused on direct detection of dark matter by the observation of WIMP-nucleus recoils. Both experiments can benefit from any increase of the detection efficiency of nuclear recoils at low energy. In this work we present two different approaches to increase this efficiency by increasing the SNR of events. The first one is based on the reduction of the readout noise of device, which is the main contribution of uncertanty to the signal measurement. New studies on the electronic noise from the integrated output amplifier and the readout electronics will be presented together with result a new configuration showing a lower limit on the readout noise(currently of 2e-) which can be implemented on the current setup of the CCD based experiments. Also, the measured performance parameters of the first science size Skipper CCD will be presented, which is the new technology for the detector upgrade of the experiments due to their very low readout noise below 1e-. A second approch to increase the SNR of events at low energy that will be presented is the studies of the spatial conformation of nuclear recoil events at different depth in the active volume by studies of new effects that differ from expected models based on not interacting diffusion model of electrons in the semiconductor.
        Speaker: Miguel Sofo Haro (Instituto Balseiro-CAB-CONICET)
      • 18:45
        Radiation-Hard/High-Speed Parallel Optical Links (12' + 3') 15m
        The LHC has recently been upgraded to operate at higher energy and luminosity. In addition, there are plans for further upgrades. These upgrades require the optical links of the experiments to transmit data at much higher speed in a more intense radiation environment. We have designed an ASIC that contains four high-speed/radiation-hard drivers to operate an array of four VCSELs at 10 Gb/s. The ASIC has been fabricated in a 65 nm CMOS process. We have also designed a new fiber optical transceiver that couples the ASIC to a VCSEL array. The optical transceiver had been exposed to an intense beam of protons to study the radiation hardness of the high-speed optical links. The irradiated devices will be extensively characterized after the radiation cool down. For the future, we plan to increase the number of channels to twelve. We will present the study of the radiation hardness of the new high-speed optical links together with the future plan.
        Speaker: K.K. Gan (The Ohio State University (US))
      • 19:00
        Developments of materials purification to produce calcium molybdate crystal for the AMoRE (12' + 3') 15m
        The AMoRE (Advanced Mo-based Rare process Experiment) is aiming at search for the neutrinoless double-beta decay of 100Mo with 100Mo-enriched and 48Ca-depleted calcium molybdate (CMO) crystals with the chemical formula, 48deplCa100MoO4. The final goal of the experiment is to explore the entire effective Majoran neutrino mass range that is allowed by the inverse mass hierarchy. To achieve such an ambitious goal, ultra-pure crystals with concentration of thorium and radium ~100 times lower than that in the currently available CMO crystals are required. The collaboration has developed purification methods for raw materials, CaCo3 and MoO3 powders, to grow the crystal and crystal-growing technique. In this poster, we will present purification results for various methods such as sublimation, column chromatography, sedimentation and co-precipitation for powders and developed crystals. Future prospects of radiopure CMO crystal scintillators production will be discussed.
        Speaker: Dr Hyangkyu Park (Institute for Basic Science)
    • 17:00 19:00
      Heavy Ions: Jets and Heavy Flavor Probes Superior B

      Superior B

      Convener: Marco Van Leeuwen (Nikhef National institute for subatomic physics (NL))
      • 17:00
        Vector boson and Charmonium production in proton-lead and lead-lead collisions with ATLAS at the LHC. (15' + 5') 20m
        Photons and weak bosons do not interact strongly with the dense and hot medium formed in the nuclei collisions, thus should be sensitive to the nuclear modification of parton distribution functions (nPDFs). The in-medium modification of heavy Charmonium states plays an important role in studying the hot and dense medium formed in the larger collision systems. The ATLAS detector, optimized for searching new physics in proton-proton collisions, is especially well equipped to measure photons, Z, W bosons and quakonium in the high occupancy environment produced in heavy ion collisions. We will present recent results on the prompt photon, Z and W boson yields as a function of centrality, transverse momentum and rapidity, from the ATLAS experiment.
        Speaker: Zvi Citron (Weizmann Institute of Science (IL))
      • 17:20
        Recent results on open and closed heavy flavor from PHENIX at RHIC (15' + 5') 20m
        Heavy quark production in heavy ion collisions has been used as a probe of the strongly coupled quark gluon plasma in two ways. One is the study of the collision centrality and transverse momentum dependence of the modification of open heavy flavor yields in A+A collisions, which provides information about the coupling of the heavy quark to the medium. The other is the study of the modification of heavy quarkonia in A+A collisions, which provides information about the effect of the medium on the binding of these closed heavy flavor mesons. PHENIX has the ability to study both probes at midrapidity and at forward/backward rapidity. Recently, measurements of quarkonia production in p(d)+A collisions have shown strong modification of the more weakly bound quarkonia, at the same time that evidence of the formation of a small QGP in these light systems has been found. This talk will present results of measurements of separated charm and bottom open heavy flavor modification in Au+Au collisions, and charmonia production in heavy ion collisions as well as in p+Au, d+Au and 3He+Au collisions.
        Speaker: Takashi Hachiya (BNL)
      • 17:40
        Results and plans with heavy ion collisions at LHCb experiment (15' + 5') 20m
        In 2015, the LHCb experiment has started to acquire data during the ion-ion runs of the LHC. In this talk we present the results of the first data analyses and discuss the prospects for the LHCb ion-ion collision programme.
        Speaker: Francesco Bossu (Orsay-LAL)
      • 18:00
        Studies of jet quenching in PbPb collisions at CMS (15' + 5') 20m
        High pT jet and hadron studies provide experimental means to explore the energy loss mechanisms in QCD matter. CMS is particularly suitable for those measurements. In this talk, an overview of recent jet and high-pT measurements from pp, pPb and PbPb collisions with the CMS detector will be presented. The latest CMS jet results from PbPb collisions at 5.02 TeV and the plan for future analyses will also be discussed.
        Speaker: Marta Verweij (CERN)
      • 18:20
        Jet measurements in p+Pb and Pb+Pb with the ATLAS Experiment at the LHC (15' + 5') 20m
        Jets provide a powerful tool for probing the dynamics of the quark-gluon plasma created in Pb+Pb collisions at the LHC. The modification of high-pT jets as they propagate in the quark-gluon plasma provides insight on structure of the plasma at short-length scale. Such modifications have been observed in a variety of measurements of single jet, dijet, photon-jet and charged-particle fragmentation functions. Recent results of modifications of jets in proton-lead and Pb+Pb collisions will be presented.
        Speaker: Martin Spousta (Charles University)
      • 18:40
        Production of forward jets in dilute-dense collisions and TMD factorization (15' + 5') 20m
        We study forward dijet production in dilute-dense hadronic collisions. By considering the appropriate limits, we show that both the transverse-momentum-dependent (TMD) and the high-energy factorization formulas can be derived from the Color Glass Condensate framework. We propose a new formula for forward dijets that encompasses both situations and is therefore applicable regardless of the magnitude of kt. That involves generalizing the TMD factorization formula for dijet production to the case where the incoming small-x gluon is off-shell. Furthermore we provide fenomenological results for nuclear modification ratios using the developed framework.
        Speaker: Krzysztof Kutak (Instytut Fizyki Jadrowej Polskiej Akademii Nauk)
    • 17:00 19:00
      Higgs Physics: 6 Chicago 9

      Chicago 9

      Conveners: Kirill Prokofiev (The Hong Kong University of Science and Technology (HK)), Stefania Gori (Perimeter Institute/Cincinnati University)
      • 17:00
        Production of heavy Higgs bosons and decay into top quarks at the LHC (15' + 5') 20m
        As heaviest elementary particle, the top quark represents an ideal laboratory to search for physics beyond the SM. In this talk we study an extended Higgs sector as a viable SM extension. In particular, we investigate the impact of the type-II two-Higgs-doublet model with two neutral Higgs bosons with masses larger than twice the top quark mass on top-quark pair production. More specifically, we calculate for top-quark pair production the resonant contributions and the contributions from the interference with the SM background (QCD and electro-weak) at next-to-leading order in the strong coupling constant. Using representative CP-conserving as well as CP-violating parameter scenarios phenomenological results will be given for different observables including spin dependent ones. Furthermore a comparison with experimental results is presented.
        Speaker: Peter Galler (Humboldt-Universität zu Berlin)
      • 17:20
        Challenges and opportunities of ttbar resonance search at the LHC (12' + 3') 15m
        The heavy scalar resonance search channel of gg→S→tt is known to be very challenging, caused by a large destructive interference with the SM background. We analyze the line shapes of heavy scalars in several well-motivated beyond the standard model physics models. Commonly existing additional contributions to the glu-glu-scalar coupling change the relative phases of the signal and background amplitudes, inducing new opportunities in this channel. In many cases, we also make connections with the corresponding indirect constraints from the observed light Higgs boson properties. We further outline various methods to improve the LHC search in this channel.
        Speaker: Zhen Liu (Fermilab)
      • 17:35
        Interference effects in BSM Higgs searches (12' + 3') 15m
        Interference effects between quasi mass-degenerate new particles can significantly modify predictions of their cross sections and decay widths. In particular in the MSSM, two neutral Higgs bosons can have very similar masses. However, the experimental searches for additional neutral Higgs bosons have so far been restricted to scenarios without interference of nearby resonances. We discuss how complex phases of MSSM parameters lead to CP-violating mixing and interference effects. As a consequence of a sizeable destructive interference term, some parameter regions, which would appear to be ruled out if the interference were neglected, actually escape the current exclusion bounds from Higgs searches at the LHC.
        Speaker: Elina Fuchs (Weizmann Institute of Science)
      • 17:50
        Search for a high mass Z-photon resonance using the ATLAS detector (15' + 5') 20m
        Many theorie beyond the Standard Model predict a resonance with a significant decay rate into a Z boson and a photon in a large mass range. The search for such a resonance is presented, using about 10 fb-1 of p-p collisions at 13 TeV.
        Speaker: Giovanni Marchiori (LPNHE Paris)
      • 18:10
        Search of a high mass neutral Higgs boson in fermion final states with the ATLAS detector. (15' + 5') 20m
        Several theories, like the Minimal Supersymmetric Standard Model, predict a high mass neutral Higgs boson with a significant decay rate into the tau-tau final state. The search for a scalar resonance in the tau-tau and other fermion decay channels is presented, using about 10 fb-1 of p-p collisions at 13 TeV
        Speaker: Trevor Vickey (University of Sheffield (GB))
      • 18:30
        Search for a Higgs boson decaying to ZH or ZA at CMS (15' + 5') 20m
        Searches for Higgs bosons decaying to a pair of Higgs bosons (hh or hA) or for a Higgs boson decaying to Zh/ZA are presented.
        Speaker: Alexandre Jean N Mertens (Universite Catholique de Louvain (UCL) (BE))
    • 17:00 19:00
      Joint Dark Matter and Astro-particle Physics and Cosmology Chicago 10

      Chicago 10

      Convener: Amanda Weinstein (Iowa State University)
      • 17:00
        Recent Searches for Dark Matter with the Fermi Large Area Telescope (15' + 5') 20m
        The era of precision cosmology has revealed that ~80% of the total amount of matter in the universe is dark matter. One promising candidate, motivated by both particle physics and astrophysics, is the Weakly Interacting Massive Particle (WIMP). WIMPs are predicted to produce gamma rays via annihilation or decay which are detectable by the Fermi Large Area Telescope (Fermi-LAT). Indirect searches such as this complement direct and collider (production) searches and are necessary to fully investigate the particle nature of dark matter. For eight years, Fermi-LAT has been surveying the sky in the energy range 20 MeV to >300 GeV from low Earth orbit. I present several recent results from the Fermi-LAT Collaboration for a variety of indirect search targets, including the extragalactic gamma-ray background, dwarf spheroidal galaxies, and the Galactic center. To date, the Fermi-LAT Collaboration has reported only upper limits, which for some search targets are now challenging the standard expectations for WIMP dark matter. I will also discuss the prospects for future searches with the Fermi-LAT.
        Speaker: Regina Caputo (University of California, Santa Cruz)
      • 17:20
        Searching for Dwarf Spheroidal Galaxies with DES and the Fermi-LAT (15' + 5') 20m
        The population of Milky Way satellite galaxies includes the least luminous, least chemically evolved, and most dark matter dominated galaxies in the known universe. Due to their proximity, high dark matter content, and lack of astrophysical backgrounds, dwarf spheroidal galaxies are promising targets for the indirect detection of dark matter via gamma rays. Prior to 2015, roughly two dozen dwarf spheroidal galaxies were known to surround the Milky Way. From combined observations of these objects, the dark matter annihilation cross section has been constrained to be less than the generic thermal relic cross section for dark matter particles with mass < 100 GeV. Since the beginning of 2015, new optical imaging surveys have discovered over twenty new dwarf galaxy candidates, potentially doubling the population of Milky Way satellite galaxies in a single year. I will discuss recent optical searches for dwarf galaxies, focusing specifically on results from the Dark Energy Survey (DES) and the implications for gamma-ray searches for dark matter annihilation with the Fermi Large Area Telescope.
        Speaker: Alex Drlica-Wagner (Fermilab)
      • 17:40
        A Search for Dark Matter from Dwarf Galaxies using VERITAS (15' + 5') 20m
        In the cosmological paradigm, cold dark matter (DM) dominates the mass content of the Universe and is present at every scale. Candidates for DM include many extensions of the standard model with weakly interacting massive particles (WIMPs) in the mass range from ~10 GeV to greater than 10 TeV. The self-annihilation or decay of WIMPs in astrophysical regions of high DM density can produce secondary particles including very high energy (VHE) gamma rays with energy up to the DM particle mass. VERITAS, an array of atmospheric Cherenkov telescopes, sensitive to VHE gamma rays in the 85 GeV-30 TeV energy range, has been utilized for indirect DM searches. The astrophysical objects considered to be candidates for indirect DM detection by VERITAS are dwarf spheroidal galaxies (dSphs) of the Local Group and the Galactic Center, among others. This presentation reports on the observations of five dSphs, and the results from a joint DM search from these objects.
        Speaker: Benjamin Zitzer
      • 18:00
        Dark Matter prospects for heavy neutralinos (12' + 3') 15m
        The relic density of TeV-scale wino-like neutralino dark matter in the MSSM is subject to potentially large corrections as a result of the Sommerfeld effect. A recently developed framework enables us to calculate the Sommerfeld-enhanced relic density in general MSSM scenarios, properly treating mixed states and multiple co-annihilating channels as well as including off-diagonal contributions. Using this framework, including on-shell one-loop mass splittings and running couplings and taking into account the latest experimental constraints, we perform a thorough study of the regions of parameter space surrounding the well known pure-wino scenario: namely the effect of sfermion masses being non-decoupled and of allowing non-negligible Higgsino or bino components in the lightest neutralino. We further perform an investigation into the effect of thermal corrections and show that these can safely be neglected. The results reveal a number of phenomenologically interesting but so far unexplored regions where the Sommerfeld effect is sizeable. We find, in particular, that the relic density can agree with experiment for dominantly wino neutralino dark matter with masses ranging from 1.7 to beyond 4 TeV. In light of these results the bounds from Indirect Detection on wino-like dark matter are revisited: indirect signals from charged cosmic rays and diffuse gamma rays are also computed within our framework, and we show the impact o the corresponding experimental limits in the new wino-like regions.
        Speaker: Aoife Bharucha (Université d'Aix-Marseille)
      • 18:15
        Predicting the neutralino relic density in the MSSM more precisely (12' + 3') 15m
        Calculating the neutralino relic density is a strong possibility to identify favoured and disfavoured regions of the parameter space of a supersymmetric theory such as the MSSM. With the latest results of the Planck mission, the cosmological parameters including the dark matter abundance are determined to an unprecedented precision. In order to reduce the theoretical uncertainty in the prediction, and to keep up with the experimental improvements, we present a next-to-leading order calculation in QCD of the neutralino (co)annihilation cross-section. We present recent results for selected annihilation and co-annihilation processes. We demonstrate that QCD corrections can have a significant impact on the cosmologically favoured parameter regions. They are thus of general interest for parameter studies and global fits. Related references: [1] J. Harz, B. Herrmann, M. Klasen, K. Kovařík and M. Meinecke, SUSY-QCD corrections to stop annihilation into electroweak final states including Coulomb enhancement effects, Phys. Rev. D 91: 034012 (2015), arXiv:1410.8063 [hep-ph] [2] J. Harz, B. Herrmann, M. Klasen and K. Kovařík, Radiative corrections to neutralino-stop coannihilation revisited, Phys. Rev. D 91: 034028 (2015), arXiv:1409.2898 [hep-ph] [3] B. Herrmann, M. Klasen, K. Kovařík, M. Meinecke and P. Steppeler, One-loop corrections to gaugino (co-)annihilation in the MSSM, Phys. Rev. D 89: 114012 (2014), arXiv:1404.2931 [hep-ph] [4] J. Harz, B. Herrmann, M. Klasen, K. Kovařík and Q. Le Boulc'h, Neutralino-stop co-annihilation into electroweak gauge and Higgs bosons at one loop, Phys. Rev. D 87: 054031 (2013), arXiv:1212.5241 [hep-ph] [5] J. Harz, B. Herrmann, M. Klasen, K. Kovařík, P. Steppeler, On the scale dependence of neutralino (co)annihilation, to be published.
        Speaker: Dr Bjorn Herrmann (Unite Reseaux du CNRS (FR))
      • 18:30
        Cosmological Effects of Realistic Dark Matter Bound States (12' + 3') 15m
        I will present fully relativistic calculations of dark matter bound state wave functions and cosmological rates that result from realistic models of dark matter. These bound states can have significant impact on early-universe cosmology, and significantly influence the dark matter relic density. Relativistic effects on the bound state wavefunctions give important corrections in regions where the cosmological impact of these bound states is of interest. The fully-relativistic technique also allows for the consideration of models which are ill-behaved in non-relativistic scattering, with the most notable example being pseudoscalar exchange between fermionic dark matter.
        Speaker: William Shepherd (University of Copenhagen)
    • 17:00 19:00
      Neutrino Physics: DBD II Chicago 6

      Chicago 6

      Convener: Prof. HongJoo Kim (Kyungpook National University)
      • 17:00
        The NEXT experiment to search for the neutrinoless double beta decay of Xe-136 (15' + 5') 20m
        The NEXT collaboration aims to build a 100 kg scale detector for neutrinoless double beta decay searches. The NEXT-100 is a gaseous Time Projection Chamber (TPC) operating with Xenon enriched at 90% in the Xe-136 isotope. Phase-I of the NEXT-100 detector, NEXT-White (NEW), is starting operation in spring 2016. With about half of the NEXT-100 linear dimensions (about 10 kg of xenon), NEW has the right size for demonstrating and fully understanding the different technological solutions to be implemented in NEXT-100, while keeping the number of sensors at a reasonable level. Furthermore, NEW is the first NEXT detector that is built with highly radio pure materials and that it will be operating underground in the Laboratorio Subterráneo de Canfranc (LSC). Its operation will permit a first in-situ measurement of the backgrounds to be expected in NEXT-100. In this talk I will explain the NEXT principle of operation and its unique advantages over alternative detection techniques in the search for neutrinoless double beta decay. I will describe the technical solutions adopted for the NEW detector. Finally, I will present a status of the project and the first results on detector performance from the initial period of operation.
        Speaker: Francesc Monrabal (University of Texas at Arlington)
      • 17:20
        Search for neutrinoless double-beta decay and measurement of double beta decay with two neutrinos with the NEMO-3 detector (15' + 5') 20m
        The NEMO-3 detector, which had been operating in the Modane Underground Laboratory from 2003 to 2010, was designed to search for neutrinoless double-β (0νββ) decay. The double-beta decay with neutrino emission was observed for several isotopes (100Mo, 82Se, 116Cd, 130Te, 150Nd, 96Zr and 48Ca) and limits sets for 0νββ decay lepton-number violating mechanisms . Multivariate analysis were developed to use the full information on the events from this tracko-calo detector. The most sensitive search was performed on 100Mo due to the larger available mass (6.914 kg). For this isotope, the level of observed background in the 0νββ signal region [2.8–3.2] MeV is 0.44±0.13  counts/yr/kg, and no events are observed in the interval [3.2–10] MeV. With an exposure of 34.3 kg.yr, we derive a lower limit on the half-life of 0νββ decays in Mo100 of T1/2(0νββ)>1.1×1024  yr at the 90% confidence level, under the hypothesis of decay kinematics similar to that for light Majorana neutrino exchange. Depending on the model used for calculating nuclear matrix elements, the limit for the effective Majorana neutrino mass lies in the range ⟨mν⟩<0.33–0.62  eV.
        Speaker: John Cesar (The University of Texas at Austin)
      • 17:40
        Status of SuperNEMO demonstrator (15' + 5') 20m
        SuperNEMO is a next generation neutrinoless double beta decay experiment with a design capability to reach a half-life sensitivity of 10$^{26}$ years with 100 kg of enriched double beta decay isotopes corresponding to an effective Majorana neutrino mass of $m_{\beta \beta }$ < 50 - 100 meV. The concept of the detector has been validated by the successful NEMO3 experiment. It is based on the possibility to measure different isotopes, to track the two emitted electrons, to measure all kinematic parameters (individual energy of the electrons, angular distribution) and then, to reduce drastically the background. The detector consists of a thin central source foil sandwiched by two tracker volumes made of drift chambers working in Geiger mode and surrounded by a calorimeter made of plastic scintillators coupled to low radioactive photomultipliers to measure the energy of the electrons. The first phase of the experiment is the SuperNEMO demonstrator able to accommodate 7 kg of enriched ββ emitter isotopes. It is currently under construction at the Modane Underground Laboratory (LSM). The objective is to demonstrate that the required radiopurity levels for the full detector can be reached: < 2 μBq/kg in $^{208}$Tl and < 10 μBq/kg in $^{214}$Bi in the source foil and less than 150 μBq/m3 in the tracker gas. For the demonstrator with 7 kg of enriched 82Se, no background is expected for 2.5 years of data acquisition leading to a half-live sensitivity of 6.10$^{24}$ years corresponding to a neutrino mass sensitivity $m_{\beta \beta }$ < 0.2 - 0.4 eV. The main achievements of the R&D concerning the calorimeter, the tracker, the source foils and low radioactive measurements will be presented as well as the status of the installation of the detector at LSM.
        Speaker: Frédéric Perrot
      • 18:00
        The Status and Initial Results of the MAJORANA DEMONSTRATOR Neutrinoless Double-Beta Decay Experiment (15' + 5') 20m
        Neutrinoless double-beta decay searches play a major role in determining the nature of neutrinos, the existence of a lepton violating process, and the effective Majorana neutrino mass. The MAJORANA Collaboration is assembling an array of high purity Ge detectors to search for neutrinoless double-beta decay in $^{76}$Ge. The MAJORANA DEMONSTRATOR is comprised of 44 kg (30 kg enriched in $^{76}$Ge) of Ge detectors in total split between two modules contained in a low background shield at the Sanford Underground Research Facility in Lead, South Dakota. The initial goals of the DEMONSTRATOR are to establish the required background and scalability of a Ge-based next-generation tonne-scale experiment. Following a commissioning run that started in 2015, the first detector module started physics data production in early 2016. The collaboration plans to complete the assembly of the second detector module by mid 2016 to begin full data production with the entire array. We will discuss initial results of the the Module 1 commissioning and first physics run, as well as the status and potential physics reach of the full MAJORANA DEMONSTRATOR experiment.
        Speaker: Vincente Guiseppe (University of South Carolina)
      • 18:20
        CUPID-0: the first prototype for a scintillating bolometer double beta decay experiment. (15' + 5') 20m
        Neutrinoless Double Beta Decay is intrinsically connected with the complete characterization of neutrino properties and, if observed, implies a lepton number violation by 2 units and proves the existence of massive Majorana neutrinos. Many efforts were spent in the last few years to develop and built very high sensitive experiments increasing the detector masses, to around 1 ton, optimizing the energy resolutions and, more important, strongly reducing the radioactive backgrounds. To increase the experimental sensitivities a further reduction of spurious counts is needed moving to obtain a close to zero background experiment. To achieve such very challenging result, the proper selection of low radioactive materials needed for the detector construction must be combined with the possibility to reject large part of the experimental background. CUPID (CUORE Upgrade with Particles ID) is a proposed experiment that plan to combine the excellent energy resolution of a bolometer with the rejection capability obtainable measuring the scintillating or the Cerenkov light emitted by the absorbing crystal: a suitable scintillator must be selected in the first case and a very sensitive cryogenic light detector is needed in the second one. In this way it will be possible to reject all the signal events produced by alpha particle interactions, that is one of the most important background component in bolometric experiments. The first step for CUPID project will be the realization of the CUPID-0 tower made with around 30 ZnSe scintillating crystals, isotopically enriched in 86Se to measure its double beta decay. The experimental configuration of CUPID-0 detector, the preliminary tests on ZnSe enriched crystals and the status of some R&D programs for CUPID will be presented.
        Speaker: Ezio Previtali (INFN - National Institute for Nuclear Physics)
      • 18:40
        Cryogenic light detectors to search for double beta decay and dark matter: the CALDER project (15' + 5') 20m
        Background rejection plays a key role for experiments searching for rare events, like neutrino-less double beta decay (0nDBD) and dark matter interactions. Among the several detection technologies that were proposed to study these processes, cryogenic calorimeters (bolometers) stand out for the excellent energy resolution, the ease in achieving large source mass, and the intrinsic radio-purity. Moreover, bolometers can be coupled to a light detector that measures the scintillation or Cherenkov light emitted by interactions in the calorimeter, enabling the identification of the interacting particle (alpha, nuclear recoil or electron) by exploiting the different light emission. This feature allows to disentangle possible signals from the background produced by all the other interactions that, otherwise, would dominate the region of interest, preventing the achievement of a high sensitivity. Next generation bolometric experiments, such as CUPID, are demanding for very competitive cryogenic light detectors. The technology for light detection must ensure an RMS noise resolution lower than 20 eV, a wide active surface (several cm$^2$) and a high intrinsic radio-purity. Furthermore, the detectors have to be multiplexable, in order to reduce the number of electronics channels for the read-out, as well as the heat load for the cryogenic apparatus. Finally they must be characterized by a robust and reproducible behavior, as next generation detectors will need hundreds of devices. None of the existing light detectors satisfies all these requests. In this contribution I will present the CALDER project, which aim is to realize a device with all the described features. CALDER will take advantage from the superb energy resolution and natural multiplexed read-out provided by Kinetic Inductance Detectors (KIDs). These sensors, that have been successfully applied in astrophysics searches, are limited only by their poor active surface, of a few mm$^2$. For this reason, we are exploiting the phonon-mediated approach: the KIDs are deposited on an insulating substrate featuring a surface of several cm$^2$. Photons emitted by the bolometer interact in the substrate and produce phonons, which can travel until they are absorbed by a KID. The first phase of the project was devoted to the optimization of the KIDs design, and to the understanding/suppression of the noise sources. For this phase we chose a well-known material for KIDs application, aluminum, which according to our detector model allows to reach a noise resolution of about 80 eV RMS. In the second phase we are investigating more sensitive materials (like Ti, Ti-Al, TiN) which will allow to reach the target sensitivity. In this contribution I will present the results obtained at the end of the first project phase in terms of efficiency and energy resolution of the detectors, and the latest results from the second phase.
        Speaker: Laura Cardani (INFN - National Institute for Nuclear Physics)
    • 17:00 19:00
      Quark and Lepton Flavor Physics: 7 Superior A

      Superior A

      Convener: Aida El-Khadra (UIUC)
      • 17:00
        Search for new physics with semileptonic $b$-hadron decays at LHCb (10' + 5') 15m
        Semileptonic decays provide an excellent environment for testing the Standard Model. Violation of lepton universality would be a smoking gun for physics beyond the Standard Model. Moreover, the measurement of the CP asymmetry in mixing of Bs mesons provides an excellent check of the Standard Model. This talk presents the latest results on semileptonic asymmetries, including a_{sl}^s, and on semi-tauonic decays of b-hadrons at LHCb, including the ratio B(B→D∗τντ)/B(B→D∗μνμ).
        Speaker: Suzanne Klaver (University of Manchester (GB))
      • 17:15
        Exclusive determinations of $|V_{cb}|$ and $|V_{ub}|$ from unquenched lattice-QCD calculations (15' + 5') 20m
        The Cabibbo-Kobayashi-Maskawa (CKM) elements $|V_{cb}|$ and $|V_{ub}|$ are important input parameters in flavor physics; they are necessary for stringent tests of the Standard Model and the search for new physics. The determination of these quantities via exclusive processes requires experimental measurements of semileptonic $B$ or $\Lambda_b$ decays and precise theoretical calculations of the relevant nonperturbative hadronic matrix elements. I will discuss the recent progress in the lattice-QCD calculations of these matrix elements, and I will present, in combination with the latest experimental results, the updates for the exclusive determinations of the CKM elements $|V_{cb}|$ and $|V_{ub}|$. I will also discuss the implication of these results for the inclusive/exclusive tensions in both $|V_{cb}|$ and $|V_{ub}|$, and their impact on tests of the unitarity triangle in the Standard Model.
        Speaker: Mr Ran Zhou (Fermi national accelerator laboratory)
      • 17:35
        Tree-level New Physics searches in semileptonic B decays at Belle (10' + 5') 15m
        Semileptonic decays involving a heavy tau lepton are sensitive to New Physics scenarios with an extended Higgs sector, such as the type II two Higgs doublet model. Semileptonic decays with light leptons can be used to search for right-handed couplings and lepton-universality violation. In this talk we report new and updated results, based on the large data sample accumulated by the Belle experiment at the KEKB asymmetric energy e+e− collider at KEK, Japan.
        Speaker: Yutaro Sato (Nagoya University)
      • 17:50
        Semileptonic decays to excited charmed mesons in the Standard Model and the type II 2HDM (15' + 5') 20m

        Semileptonic decays of B-mesons into excited charmed mesons of the 1P quadruplet are investigated in the context of the Standard Model and the type II two-Higgs doublet model. Predictions for differential branching fractions as a function of the four-momentum transfer squared are presented for the charmed meson either being a D2, D1, D1' or D0-meson, as well as predictions for the ratios of the semi-tauonic and light lepton semileptonic branching fractions. These predictions rely on the determination of the leading Isgur-Wise function from the measured total branching fraction of the narrow 1P states and hadronic branching fractions which are connected through a factorization theorem to the semileptonic form factors at maximal recoil of the initial B-meson and excited charmed mesons. In addition, the dependence of the ratio of semi-tauonic and light lepton branching fractions on the MSSM parameters tanβ and mH+ is predicted for all states of the quadruplet.

        Speaker: Florian Urs Bernlochner (Universitaet Bonn (DE))
      • 18:10
        Measurement of the B0 -> D*- pi+ pi- pi+  decay branching fraction (10' + 5') 15m
        We present a measurement of the decay branching fraction BF(B0 -> D\*- pi+pi-pi+) obtained by using a data sample of about 471 million BBbar  pairs collected by the BABAR detector at the PEP-II e+e- collider. This measurement is about 3 times more precise than the current world average value.  This decay of the neutral B meson can be used as a normalization channel for the measurement of the ratio BF(B0 -> D\*- tau+ nu) /BF(B0->D\*-pi+pi-pi+), with  tau+ -> pi+pi-pi+ nu that can be extracted from hadron colliders, and could help to shed light on the excess, at the more than 3sigma level  with respect to the SM prediction, of  BF(B0 -> D\*- tau+ nu)  as measured by several experiments.  In addition, a significantly improved  measurement of the 3pi structure in this decay is presented.
        Speaker: Alberto Lusiani (Scuola Normale Superiore and INFN Pisa)
      • 18:25
        Flavor physics with $\Lambda_b$ baryons (15' + 5') 20m
        Measurements of $\Lambda_b$ decays at the Large Hadron Collider provide complementary constraints on important quantities in flavor physics, and can shed new light on "anomalies" observed in mesonic $b$ decays. In this talk, I will report on lattice QCD calculations of the form factors describing semileptonic and rare $\Lambda_b$ decays, and discuss the phenomenological implications. The topics covered include determinations of $|V_{ub}|$ and $|V_{cb}|$, fits of $|\Delta B|=|\Delta S|=1$ Wilson coefficients, and tests of lepton flavor universality.
        Speaker: Prof. Stefan Meinel (University of Arizona / RIKEN BNL Research Center)
      • 18:45
        Precision $\tau$ measurements from Belle and lepton-flavor-violating $\tau$ decay prospects at SuperKEKB/Belle II (10' + 5') 15m

        In this talk, we present studies of $\tau$ leptons at Belle and the prospects at SuperKEKB/Belle II.

        We evaluate the Michel parameters of $\tau$ leptonic decay using Belle’s full data sample. This measurement is important to reveal the Lorentz structure of $\tau$ leptonic decay, which includes not only the $V-A$ interaction but also contributions from scalar, tensor and others that may arise from New Physics; this measurement tests lepton universality as well. We also measure branching fractions of $\tau$ decays into three charged pseudo-scalars and a tau neutrino using the full sample of Belle. In the previous analysis by Belle, some deviation from the existing measurements was seen for the branching fraction on $\tau \to \pi\pi\pi\nu$ mode; we expect to make this clear by our full analysis.

        The Belle~II experiment aims to record 50 ab$^{-1}$ of data at the SuperKEKB energy-asymmetric $e^+e^-$ collider. The anticipated high statistics data sample has excellent sensitivity to lepton flavor violating (LFV) $\tau$ lepton decays including $\tau \to \mu \gamma$, $\tau \to \mu \pi^0/\eta$ and so on. Prospects and sensitivities for $\tau$ LFV at Belle~II will be presented.

        Speaker: Kenji Inami (Nagoya university)
    • 17:00 18:10
      Strong Interactions and Hadron Physics: theory, KLOE, ALEPH Ontario

      Ontario

      Convener: Marina Nielsen (Universidade de São paulo)
      • 17:00
        Exclusive Radiative Decays of Z Bosons in QCD Factorization (12' + 3') 15m
        We present a detailed theoretical analysis of very rare, exclusive hadronic decays of Z bosons from first principles of QCD. Our main focus is on the radiative decays Z -> M gamma, in which M is a pseudoscalar or vector meson. At leading order in an expansion in powers of Lambda_QCD/mV the decay amplitudes can be factorized into convolutions of calculable hard-scattering coefficients with the leading-twist light-cone distribution amplitude of the meson M. Power corrections to the decay rates arise first at order (Lambda_QCD/mV )^2. They can be estimated in terms of higher-twist distribution amplitudes and are predicted to be tiny. We include one-loop O(alpha_s) radiative corrections to the hard-scattering coefficients and perform the resummation of large logarithms (alpha_s ln(m_V^2/mu_0^2))^n (with mu_0 \approx 1 GeV a typical hadronic scale) to all orders in perturbation theory. Evolution effects have an important impact both numerically and conceptually, since they reduce the sensitivity to poorly determined hadronic parameters. We also discuss the special case where M has a flavor singlet component on its wavefunction. A measurement of these processes at a future high-luminosity Z factory could provide interesting information on the gluon distribution amplitude. Some of the decay modes studied here have branching ratios large enough to be accessible in the high-luminosity run of the LHC. Many of them can be measured with high accuracy at a future lepton collider. This will provide stringent tests of the QCD factorization formalism and enable novel searches for new physics.
        Speaker: Stefan Alte (Johannes Gutenberg University, Mainz, Germany)
      • 17:15
        Lattice-QCD determinations of αs and the heavy quark masses (15' + 5') 20m
        The most important sources of uncertainty in calculations of the partial widths of the Higgs boson within the Standard Model will come from the parametric dependences on αs, mb, and mc. Knowledge of these parameters is systematically improvable through numerical lattice gauge theory calculations. I discuss the current status of and prospects for these calculations and estimate the precision that lattice QCD will achieve in the next decade and the corresponding precision that will be attained for the Standard Model predictions for Higgs boson partial widths.
        Speaker: Paul Mackenzie (Fermilab)
      • 17:35
        The strong coupling from the revised ALEPH data for hadronic τ decays (12' + 3') 15m
        We apply an analysis method previously developed for the extraction of the strong coupling from the OPAL data to the recently revised ALEPH data for non-strange hadronic τ decays. Our analysis yields the values αs(m2τ)=0.296±0.010 using fixed-order perturbation theory, and α_s(m^2_τ)=0.310±0.014 using contour-improved perturbation theory. Averaging these values with our previously obtained values from the OPAL data, we find α_s(m^2_τ)=0.303±0.009, respectively, α_s(m^2_τ)=0.319±0.012. We present a critique of the analysis method employed previously, for example in analyses by the ALEPH and OPAL collaborations, and compare it with our own approach. Our conclusion is that non-perturbative effects limit the accuracy with which the strong coupling, an inherently perturbative quantity, can be extracted at energies as low as the τ mass. Our results further indicate that systematic errors on the determination of the strong coupling from analyses of hadronic τ-decay data have been underestimated in much of the existing literature.
        Speaker: santiago peris (Univ. Autonoma de Barcelona)
      • 17:50
        Latest KLOE results on hadron physics (15' + 5') 20m
        The KLOE experiment has collected 2.5 fb-1 at the peak of the phi resonance at the e+e- collider DAPHNE in Frascati. A new beam crossing scheme, allowing for a reduced beam size and increased luminosity, is now operating at DAPHNE. The upgraded detector, named KLOE-2, has already collected 1.3 fb-1 in these new operating conditions. In the meanwhile, analysis of KLOE data is still in progress, providing new important results in the light meson sector. The V-->Pgamma Dalitz decays, associated to internal conversion of the photon into a lepton pair, are not well described by the Vector Meson Dominance (VMD) models, as in the case of the process omega --> pi0 mu+ mu-, measured by the NA60 collaboration. The only existing data on phi --> eta e+ e- come from the SND experiment, which has measured the Mee invariant mass distribution on the basis of 213 events. At KLOE, a detailed study of this decay has been performed using eta-->pi0pi0pi0 final state. Simple analysis cuts provide clean signal events, with a residual background contamination of 2-3%. We obtain the measurement of the branching fraction for the process phi --> eta e+ e-, with an accuracy improved by a factor of five with respect to the previous most precise measurement, and the transition form factor, which is in agreement with VMD expectations. We have also new results for the decay phi --> pi0 e+ e-, where no data are available on transition form factor. Dedicated analysis cuts strongly reduce the main background component of Bhabha events to ~20%, leading to ~4000 signal events in the whole KLOE data set. These events have been used to obtain the first measurement of the phipi0 transition form factor and the most precise determination of the branching fraction. KLOE data have been also exploited to obtain a new, precise results on the isospin-violating decay eta-->pi+pi-pi0, sensitive to the light-quark mass ratio. This study, overpassing in precision previous results published by KLOE in 2008, aims to a better determination of the light-quark mass ratio through the dispersive analysis of the eta--> 3 pi decay, following theoretical works as Leutwyler, Mod.Phys.Lett. A28 (2013) 1360014. The new analysis, performed with an independent and larger data set (1.7 fb-1), a new analysis scheme and improved Monte Carlo simulation, determines with very good accuracy the parameters of the decay matrix element. The Dalitz plot density is parametrized as a polynomial expansion up to cubic terms in the normalized dimensionless variables X and Y. The experiment is sensitive to all charge conjugation conserving terms of the expansion, providing an improvement of a factor of two on the statistical uncertainty of all parameters with respect to earlier experiments. Smaller systematic uncertainties, which are in some cases reduced by a factor two or three, have been also achieved.
        Speaker: Dario Moricciani (INFN RM2)
    • 17:00 19:00
      Top Quark and Electroweak Physics: 6 Huron

      Huron

      Convener: Joao Barreiro Guimaraes Da Costa (Chinese Academy of Sciences (CN))
      • 17:00
        Precise Predictions to Divector Boson Production in Association with Jets at the LHC (15' + 5') 20m
        The increase in energy and luminosity at the LHC during Run II allows for a detailed study of vector boson pair production in association with multiple jets. These type of processes can be exploited for measurements of gauge couplings, are connected to top-quark production and also appear in search channels of physics beyond the Standard Model. In this talk we present NLO QCD corrections to divector boson production in association with jets at hadron colliders. We show the impact of the quantum corrections for total rates of production and also differentially over phase space.
        Speaker: Fernando Febres Cordero (University of Freiburg)
      • 17:20
        Measurement of WW and WZ production in the lepton plus heavy flavor jets final state at CDF (13' + 2') 15m
        We present the CDF measurement of the diboson WW and WZ production cross section in a final state consistent with leptonic W decay and jets originating from heavy flavor quarks, based on the full Tevatron Run II dataset. The analysis of the di-jet invariant mass spectrum allows the observation of 3.7 sigma evidence for the combined production processes of either WW or WZ bosons. The different heavy flavor decay pattern of the W and Z bosons and the analysis of the secondary-decay vertex properties allow to independently measure the WW and WZ production cross section in a hadronic final state. The measured cross sections are consistent with the standard model predictions and correspond to signal significances of 2.9 and 2.1 sigma for WW and WZ production, respectively.
        Speakers: Sandra Leone (Universita di Pisa & INFN (IT)), on behalf CDF Collaboration (Fermilab)
      • 17:35
        Vector boson scattering, triple gauge-boson production (including Zgg) and limits on anomalous quartic gauge couplings with the ATLAS detector (15' + 5') 20m
        Vector-boson scattering processes provide a unique way to probe the mechanism of electroweak symmetry breaking. Similar physics can be probed by studying the production of three gauge bosons. The results can also be used for a model-independent search for new physics at the TeV scale via anomalous quartic gauge couplings. The ATLAS collaboration has studied vector boson scattering in final states with two gauge bosons and two forward jets in 20.3 /fb of 8TeV proton-proton collision data, in particular two same-sign W bosons, a WZ boson pair, and a W or Z boson in association with an isolated photon. The studies are complemented by a search for anomalous vector boson production of WW+WZ pairs in their semileptonic decays to lnujj in association with two forward jets. The collaboration has used this data set as well to study the production of three gauge bosons. A search was carried out for the production of three W bosons. The cross sections for the production of a W or Z boson in association with two isolated photons has been also measured. Z boson decays into charged leptons as well as neutrinos were studied. Finally, a measurement of exclusive production of W boson pairs produced by the interaction of two photons will be presented. This topology is found to provide strong constraints on anomalous quartic gauge couplings.
        Speaker: Hulin Wang (Southern Methodist University (US))
      • 17:55
        WW + jet at 14 and 100 TeV (15' + 5') 20m
        In the second run of the LHC, which started in April 2015, an accurate understanding of Standard Model processes is more crucial than ever. Processes including electroweak gauge bosons serve as standard candles for SM measurements, and equally constitute important background for BSM searches. We here present the NLO QCD virtual contributions to W+W- + jet in an analytic format obtained through unitarity methods and show results for the full process using an implementation into the Monte Carlo event generator MCFM. Phenomenologically, we investigate total as well as differential cross sections for the LHC with 14 TeV center-of-mass energy, as well as a future 100 TeV proton-proton machine.
        Speaker: Tania Robens (TU Dresden)
      • 18:15
        EW phenomena at the highest Q2 in pp collisions at 100 TeV (15' + 5') 20m
        The immense energies available at a 100 TeV pp collider can probe EW interactions in new regimes. Virtual effects, as well as emission of gauge bosons, have an important impact on the dynamics of processes in the multi-TeV energy range. This presentation reviews recent results, obtained in the framework of the Future Circular Collider Study.
        Speaker: Fulvio Piccinini (Universita e INFN, Pavia (IT))
      • 18:35
        Precision Electroweak Measurements at a Future e+e- Linear Collider (15' + 5') 20m
        The International Linear Collider (ILC) project aims to build a linear electron-positron collider capable of precision physics measurements at center-of-mass energies ranging from 91 GeV to 1 TeV using polarized electrons and positrons. In this contribution an overview is presented of the potential of such a machine to advance precision studies of electroweak physics with an emphasis on the opportunities in W and Z physics. Prime targets are vastly improved measurements of the gauge-boson couplings, complementary and robust precision measurements of the W mass in the few MeV range from data collected both well above and close to the WW threshold, and a precision measurement of the left-right asymmetry of the Z. In order to take advantage of the high statistics envisioned for ILC, particular attention to the control of systematics associated with the understanding of the initial state experimental conditions is mandatory. Experimental strategies for controlling systematics associated with the determination of the center-of-mass energy, the beam polarization, the differential luminosity spectrum and the absolute luminosity determination will be highlighted. Related results from the Compact Linear Collider project will also be discussed where appropriate. Submitted on behalf of the ILC physics and detector study.
        Speaker: Graham Wilson (University of Kansas (US))
    • 20:00 21:30
      DOE - PI Meetings: HEP Theory Chicago 9

      Chicago 9

    • 20:00 21:30
      DOE - PI Meetings: Intensity Frontier Chicago 8

      Chicago 8

    • 07:00 09:00
      Registration: Registration desk will be open until 6pm
    • 09:00 10:45
      Astro-particle Physics and Cosmology: Cosmic Microwave Background and Neutrinos Chicago 10

      Chicago 10

      Convener: Jeffrey Filippini (University of Illinois, Urbana-Champaign)
      • 09:00
        The South Pole Telescope (12' + 3') 15m
        I will give an overview of the science results and cosmological constraints from the South Pole Telescope (SPT). The SPT is a 10-meter diameter telescope designed for observations of the cosmic microwave background (CMB). I will highlight recent results from the completed SPT-SZ survey and the underway SPTpol survey, and discuss the projected constraints for the future SPT-3G survey. The SPT data has been used to make new measurements of the CMB temperature and polarization power spectra, characterize the gravitational lensing of the CMB by large-scale structure, and to constrain the evolution of the abundance of galaxy clusters. These measurements have been used to put new constraints on dark energy and modified gravity, the sum of the neutrino masses, and the effective number of neutrino species. Future SPT-3G measurements will be used to to test and constrain physics at Planck energy scales (1e16 GeV), to constrain the sum of the neutrino masses with a sensitivity near the minimum mass expected from neutrino oscillations (<0.06 eV), and to constrain the relativistic energy density of the Universe with a sensitivity 4 times better than current constraints.
        Speaker: Bradford Benson (Fermi National Accelerator Laboratory)
      • 09:15
        Latest Results from SPTpol (12' + 3') 15m
        All-sky surveys of the primary temperature anisotropies of the Cosmic Microwave Background (CMB) are now cosmic variance limited on large to intermediate scales. Surveys sensitive to smaller scales are additionally contaminated by brighter secondary anisotropies such as the thermal and kinematic Sunyaev-Zel'dovich effects and emission from unresolved sources. To place tighter constraints on cosmology from CMB primary anisotropies we turn to measurements of CMB polarization. Not only is polarization another probe of $\Lambda$CDM cosmology, but secondary anisotropies are expected to have low polarized emission, which opens more of the so-called CMB damping tail to cosmological study. We present new ground-based 150 GHz measurements of anisotropies in CMB *E*-mode and temperature-*E*-mode correlation in a 500 square-degree patch of sky observed with the SPTpol instrument. Installed on the South Pole Telescope in early 2012, SPTpol is a dichroic receiver with 180 and 588 transition edge sensor (TES) polarimeters sensitive to 95 and 150 GHz, respectively. Over a range of spherical harmonic multipoles 50 $\le \ell <$ 10000 we detect 9 acoustic peaks in the *E*-mode angular auto-power spectrum. With these spectra we constrain $\Lambda$CDM cosmology independently from temperature-only measurements, and present new joint constraints with the Planck temperature auto-power spectrum. The CMB is also gravitationally lensed by large-scale structure. We use our high-fidelity map of *E*-mode polarization, in conjunction with SPTpol maps of *B*-mode polarization and temperature, to map the lensing potential of the CMB and measure its corresponding power spectrum. Finally, the CMB lensing potential can be combined with our *E*-mode map to estimate the amount of lensing *B* modes present in the field, which can be *delensed* to improve constraints on primordial *B* modes and the energy scale of inflation through the tensor-to-scalar ratio, *r*.
        Speaker: Jason Henning (University of Chicago)
      • 09:30
        The Atacama Cosmology Telescope: recent results and future prospects (15' + 5') 20m
        I will present recent results and show future directions for the Atacama Cosmology Telescope (ACT) project. Over the past three years, ACT has surveyed 3000 square degrees of the Northern and Southern galactic caps, at 150 and 90 GHz, in both intensity and polarization, with resolutions of 1.3 and 2.0 arcminutes. These data have sufficient depth and angular scale coverage to provide verification of Planck results, while the high resolution provides sensitivity to point source populations, galaxy clusters, and a better understanding of unresolved foregrounds. In the next phase, called Advanced ACTPol, the survey will be expanded to several thousand square degrees and four frequency bands. The use of multi-chroic detectors to increase detector density and rapidly rotating half-wave plates to overcome atmospheric contamination of polarization on large angular scales will allow the instrument to make important contributions to studies of the primordial power spectrum, B-mode science, CMB lensing, galaxy cluster cosmology, and a host of cross-correlation studies.
        Speaker: Matthew Hasselfield (Princeton University (US))
      • 09:50
        The Next Generation Cosmic Microwave Background Experiment, CMB-S4 (15' + 5') 20m
        Increasingly sensitive and precise measurements of the cosmic microwave background (CMB) have led to spectacular advances in our understanding of the origin, make up and evolution of our universe. We now have a standard cosmological model, $\Lambda$CDM, that fits all the cosmological data with only six parameters, although there are some tensions that may hint at cracks in the model. Far from being the last word in cosmology, the model points to exciting times ahead using the ultra-sensitive CMB temperature and polarization measurements to explore new physics, i.e., inflation, dark energy, neutrino masses and possible additional relativistic species. This talk will discuss the scientific goals and status of the community-driven next generation and P5 endorsed stage 4 ground-based cosmic microwave background program, CMB-S4. By deploying of order 500,000 detectors with multiple frequency bands and using telescopes at the South Pole, the high Atacama plateau in Chile, and possibly at an additional northern site, CMB-S4 will provide the leap in sensitivity to achieve the key cosmological goals of 1) detecting or ruling out large field inflationary models, 2) determining the effective number and masses of the neutrinos, and 3) providing precision constraints on dark energy through its impact on structure formation.
        Speaker: Jeff McMahon (University of Michigan)
      • 10:10
        Planck constraints on neutrino physics (15' + 5') 20m
        The early Universe is a very sensitive probe of various quantities related to neutrinos, e.g., the sum of neutrino masses, or the effective number of relativistic species. Currently, the most powerful cosmological observable are the temperature and polarisation anisotropies of the cosmic microwave background radiation, which were recently measured to great precision by the European Space Agency's Planck mission. In this talk I will review the status of cosmological constraints on neutrino properties after Planck and give an outlook on future prospects.
        Speaker: Jan Hamann
      • 10:30
        Type II leptogenesis (12' + 3') 15m
        We realize a new type of leptogenesis where the W boson exchange diagram contributes. This enables us to express the lepton asymmetry in terms of the PMNS CP phase. For this to be realized, the electroweak gauge group remains broken during the leptogenesis epoch.
        Speaker: Prof. Jihn E. Kim (Kyung Hee University)
    • 09:00 10:45
      Beyond the Standard Model: 8 Chicago 7

      Chicago 7

      Convener: Kiwoon Choi (KAIST)
      • 09:00
        BSM physics at CLIC (15' + 5') 20m
        The Compact Linear Collider (CLIC) is an option for a future electron-positron collider operating at centre-of-mass energies from a few hundred GeV up to 3 TeV. The search for phenomena beyond the Standard Model through direct observation of new particles and precision measurements is a main motivation for the high-energy stages of CLIC. An overview of physics benchmark studies assuming different New Physics scenarios is given in this presentation. These studies are based on full detector simulations. New particles can be discovered in a model-independent way almost up to the kinematic limit of sqrt(s) / 2. The low background conditions at CLIC provide extended discovery potential compared to hadron colliders, for example in the case of non-coloured TeV -scale SUSY particles. In addition to studying new particles directly, BSM models can be probed up to scales of tens of TeV through precision measurements. Examples, including recent results on the reaction e+ e- -> gamma gamma, are given. Beam polarisation allows to constrain the underlying theory further in many cases. The talk will also include discussion of LHC results relevant for the CLIC physics case.
        Speaker: Rosa Simoniello (CERN)
      • 09:20
        SUSY model and dark matter determination in the compressed-spectrum region at the ILC. (15' + 5') 20m
        It is an appealing possibility that the observed dark matter density in the universe can be fully explained by SUSY. The current experimental knowledge indicates that this possibility favours a co-annihilation scenario. In such scenarios, the mass difference between the next-to-lightest SUSY particle (the NLSP) and the lightest one (the LSP) is quite small, which assures that the annihilation cross-section is sufficient not to predict a too large abundance of dark matter. However, the small mass difference also means that observing SUSY becomes hard at hadron colliders, where the observation hinges on the tell-tale signature of missing transverse energy: if the mass difference NLSP-to-LSP is small, only little energy is carried away by the invisible LSP. This is also true even if several other SUSY particles are within the kinematic reach, since these states would to a large extent decay via cascades ending with an NLSP to LSP decay. A lepton collider does not have this problem. The clean environment and known initial state at such machines assures that SUSY can be detected even if the mass difference is very small, provided the centre-of-mass energy is sufficiently high. We present prospects for observation and precision characterisation of SUSY with small mass differences at the ILC, based on detailed simulations of the ILD detector concept. The resulting possibility to predict the dark matter relic density is evaluated and compared to the precision obtained from the Planck mission. Taking a specific model as an example, we also discuss the synergies from combining ILC and HL-LHC results.
        Speaker: Mikael Berggren (Deutsches Elektronen-Synchrotron (DE))
      • 09:40
        WIMP Searches at the International Linear Collider (15' + 5') 20m
        Weakly Interacting Massive Particles (WIMPs) are among the favored candidates for Dark Matter and can be searched for in dedicated experiments as well as at colliders. WIMP searches at lepton colliders directly probe the WIMPs' coupling to electrons and are thus complementary to both hadron collider searches and direct detection, which rely on the WIMPs' coupling to hadrons. At lepton colliders, WIMP pair production can be probed for masses up to nearly half the center-of-mass energy via a photon from initial state radiation as the observable signal particle. Polarised beams are essential to reduce Standard Model backgrounds and to determine the properties of the WIMPs in case a signal is discovered. In this contribution, the future prospects for WIMP searches and characterization will be presented based on a detailed simulation study performed for the International Linear Collider. The dependencies of the results on center-of-mass energy, luminosity and beam polarisation will be discussed in the context of other colliders and special detector requirements for this type of search will be highlighted.
        Speaker: Moritz Habermehl (Deutsches Elektronen-Synchrotron (DE))
      • 10:00
        Naturalness and light higgsinos: a powerful reason to build ILC (15' + 5') 20m
        A core prediction of natural Supersymmetry is the existence of four light Higgsinos not too far above the mass of the $Z$ boson. The small mass splittings amongst the Higgsinos--typically 5-20 GeV-- implies very little visible energy release from decays of heavier Higgsinos. In particular, if other SUSY particles are quite heavy, as can be the case in SUSY with radiatively-driven naturalness, the Higgsinos are extremely hard to detect at hadron colliders. The clean environment of electron-positron colliders with $E>2m(higgsino)$, however, would allow for a decisive search for the required light Higgsinos. Thus, $e^+e^-$ colliders should either discover or exclude natural SUSY. We present a detailed study of Higgsino pair production at the proposed International Linear $e^+e^-$ Collider which is under consideration for construction in Japan. A variety of precision measurements should allow for extraction of underlying parameters and provide a window onto physics at the grand unified scale.
        Speakers: Howard Baer (University of Oklahoma), Dr Jenny List (DESY)
    • 09:00 10:45
      Detector: R&D and Performance: Photodetectors Chicago 8

      Chicago 8

      Convener: Kenji Inami (Nagoya university)
      • 09:00
        Upgrades and aging of the CMS muon system (12' + 3') 15m
        The present CMS muon system operates three different detector types: in the barrel drift tubes (DT) and resistive plate chambers (RPC), along with cathode strip chambers (CSC) and another set of RPCs in the forward regions. In order to cope with increasingly challenging conditions various upgrades are planned to the trigger and muon systems. In view of the operating conditions at HL-LHC, it is vital to asses the detector performance for high luminosity. New irradiation tests had to be performed to ensure that the muon detectors will survive the harsher conditions and operate reliably. The new CERN GIF++ (Gamma Irradiation Facility) allowed to perform aging tests of these large muon detectors. We present results in terms of system performance under large backgrounds and after accumulating charge through an accelerated test to simulate the expected dose. New detectors will be added to improve the performance in the critical forward region: large-area triple-foil gas electron multiplier (GEM) detectors will already be installed in LS2 in the pseudo-rapidity region 1.6 < eta < 2.4, aiming at suppressing the rate of background triggers while maintaining high trigger efficiency for low transverse momentum muons. For the HL-LHC operation the muon forward region should be enhanced with another large area GEM based station, called GE2/1, and with two new generation RPC stations, called RE3/1 and RE4/1, having low resistivity electrodes. These detectors will combine tracking and triggering capabilities and can stand particle rates up to few kHz/cm2. In addition to take advantage of the pixel tracking coverage extension a new detector, ME0 station, behind the new forward calorimeter, covering up to |η| = 3. To continue triggering with the current performance in Run-2, the Level-1 Trigger will have to undergo a significant re-organisation, going from a subsystem-centric view in which hits in the DT, the CSC, and the RPC were treated separately to a merged treatment at the track-finding level.
        Speaker: Justin Pilot (University of California Davis (US))
      • 09:15
        Small-Strip Thin Gap Chambers for the Muon Spectrometer Upgrade of the ATLAS Experiment (12' + 3') 15m
        The instantaneous luminosity of the Large Hadron Collider at CERN will be increased up to a factor of five with respect to the design value by undergoing an extensive upgrade program over the coming decade. Such increase will allow for precise measurements of Higgs boson properties and extend the search for new physics phenomena beyond the Standard Model. The largest phase-1 upgrade project for the ATLAS Muon System is the replacement of the present first station in the forward regions with the so-called New Small Wheels (NSWs) during the long-LHC shutdown in 2019/20. Along with Micromegas, the NSWs will be equipped with eight layers of small-strip thin gap chambers arranged in multilayers of two quadruplets, for a total active surface of more than 2500 m$^2$. All quadruplets have trapezoidal shapes with surface areas up to 2 m$^2$. To retain the good precision tracking and trigger capabilities in the high background environment of the high luminosity LHC, each sTGC plane must achieve a spatial resolution better than 100 μm to allow the Level-1 trigger track segments to be reconstructed with an angular resolution of approximately 1mrad. The basic sTGC structure consists of a grid of gold-plated tungsten wires sandwiched between two resistive cathode planes at a small distance from the wire plane. The precision cathode plane has strips with a 3.2mm pitch for precision readout and the cathode plane on the other side has pads for triggering. The position of each strip must be known with an accuracy of 30 µm along the precision coordinate and 80 µm along the beam. On such large area detectors, the mechanical precision is a key point and then must be controlled and monitored all along the process of construction and integration. The pads are used to produce a 3-out-of-4 coincidence to identify muon tracks in an sTGC quadruplet. A full size sTGC quadruplet has been constructed and equipped with the first prototype of dedicated front-end electronics. The performance of the full size sTGC quadruplet has been studied at the Fermilab (May 2014) and CERN (October 2014) test beam facilities to study spatial resolution and trigger efficiencies. We will describe the technological novelties, production challenges, performance and test results of the sTGC detectors. The status of the project and the plan for the completion will also be discussed.
        Speaker: Rimsky Alejandro Rojas (Federico Santa Maria Technical University (CL))
      • 09:30
        Performance Studies of Large Resistive Micromegas Quadruplets in Test-Beams and High Radiation Environments (12' + 3') 15m
        In recent years, Micromegas detectors become more and more important for large scale tracking systems in particles physics. In this presentation, we report on the construction of two prototype detector quadruplets with an area of 0.5 m2 per plane, based on the resistive-strip technology, which can be used for precision tracking in high rate environments. The detectors were built in a modular way. The quadruplets consist of two double-sided readout panels and three support (or drift) panels equipped with the micromesh and the drift electrode. The panels are bolted together such that the detector can be opened and cleaned, if required. Two of the readout planes are equipped with readout strips inclined by 1.5 degree. In this talk, we present the results of detailed performance studies based on X-Ray measurements, cosmic ray- and test-beam measurements at the MAMI accelerator that have been conducted in the past months. In particular, results on reconstruction efficiencies, track resolution and gain homogeneity will be presented. In addition, first performance measurements in high radiation environments taken at the GIF++ facility will be presented.
        Speaker: Ourania Sidiropoulou (Bayerische Julius Max. Universitaet Wuerzburg (DE))
      • 09:45
        Research and Development of Commercially Manufactured Large GEM Foils (12' + 3') 15m
        Many current experiments are already using detectors which consist of large area GEMs and with even more future experiments proposing new detectors that utilize very large-area GEMs, there is a need for commercially available GEM foils. Currenty CERN is the only main distributor of GEM foils, however with the growing interest in GEM technology, keeping up with the increasing demand for GEMs will be difficult. Thus the commercialization of GEMs has been established by Tech-Etch Inc. of Plymouth, MA, USA using the single-mask technique, which is capable of producing GEM foils over a meter long. To date Tech-Etch has succefully manufactured $10\times10\,$cm$^{2}$ and $40\times 40\,$cm$^{2}$ GEM foils. We will report on the electrical and geometrical properties, along with the inner and outer hole diameter size uniformity of these foils. Using our electrical and optical measurement setup, we also measured $10\times10\,$cm$^{2}$ GEM foils produced by CERN for a direct comparison to the foils produced by Tech-Etch. Furthermore, Tech-Etch has now begun producing even larger GEMs of $50\times50\,$cm$^{2}$, which are currently under active analysis. The Tech-Etch foils were found to have excellent electrical properties. The measured mean optical properties were found to reflect the desired parameters and are consistent with those measured in double-mask GEM foils, and show good hole diameter uniformity over the active area. These foils are well suited for future applications in nuclear and particle physics where large-area tracking devices are needed such as at the LHC and at a future Electron-Ion Collider facility.
        Speaker: Prof. Bernd Surrow (Temple University)
      • 10:00
        Increasing the sensitivity of LXe TPCs to dark matter by adding helium or neon (12' + 3') 15m
        Next generation liquid xenon TPCs are poised to increase our sensitivity to dark matter by two orders of magnitude over a wide range of possible dark matter candidates. This abstract describes an idea to expand the reach and flexibility of such detectors even further, by adding helium and neon to the xenon to enable searches for very light dark matter and combining high and low Z targets in the same detector. Adding helium or neon to LXe-TPCs has many advantages. First, the helium or neon target benefits from the excellent self-shielding provided by a large liquid xenon detector. Second, the same instrumentation, PMTs, and data acquisition can be used. Third, light nuclei are more robust to the systematic uncertainties that affect light WIMP searches. Fourth, helium and neon recoils will likely produce larger signals in liquid xenon than xenon recoils, achieving lower energy thresholds, and further increasing the sensitivity to light WIMPs. Lastly, by adding He/Ne in sequence after a Xe-only run, the source of any observed signal can be isolated.
        Speaker: Hugh Lippincott (FNAL)
      • 10:15
        Precision Calibration of Large Area Micromegas Detectors Using Cosmic Rays (12' + 3') 15m
        Currently m$^2$ large Micromegas detectors with a spatial resolution better than 100 $\mu$m are of big interest for many experiments. Due to their size the construction of these detectors is highly sophisticated and needs to fulfill strict mechanical tolerances. We developed a method to survey working detectors on potential deviations of the micro pattern readout structures from design value as well as deformations of the whole detector, using cosmic muons in a tracking facility. The LMU Cosmic Ray Facility consists of two 8\,m$^2$ ATLAS Monitored Drift Tube chambers (MDT) for precision muon tracking and two segmented trigger hodoscopes for 10 cm position information along the wires of the MDTs with sub-ns time-resolution. It provides information on homogeneity in efficiency and pulse height of one or several Micromegas installed in between the MDTs. With an angular acceptance of -30$^\circ$ to +30$^\circ$ the comparision of the MDT muon tracking with centroidal position determination or TPC-like track reconstruction of the Micromegas allows for calibration in three dimensions. We investigate presently a telescope consisting of a 1 m$^2$ and three 100 cm$^2$ resistive strip Micromegas, with emphasis on the differences in performance between large and small detectors. The small detectors behave dimensionally stable, whereas the large detector seems to show deviations from the readout strip staightness and global deformation due to the small overpressure coused by the Ar:CO$_2$ gas flux. We introduce the alignment and calibration procedure, report on homogeneity in efficiency and pulse height and present results on deformation and performance of the 1 m$^2$ Micromegas. The same maesurement will be performed with a 4-layer Micromegas quadruplet of 2 m$^2$ size, as soon as its construction is finished.
        Speaker: Philipp Jonathan Loesel (Ludwig-Maximilians-Univ. Muenchen (DE))
      • 10:30
        Studies of Micro Pattern Gas Detector modules of a Large Prototype TPC for the ILC (12' + 3') 15m
        Significant R&D on detectors for the future International Linear Collider (ILC) has been carried out during the last few years. The International Large Detector (ILD) is one detector concept at the ILC where calorimetry and tracking systems are combined. The tracking system consists of a Si vertex detector, forward tracking disks and a large volume Time Projection Chamber (TPC). A TPC using novel micro pattern gas detector (MPGD) technology is being planned. Within the framework of the LCTPC collaboration, a Large Prototype (LP) TPC has been built as a demonstrator. Its endplate can accommodate up to seven modules of MPGD representative of the near-final proposed design for ILD. The MPGD technologies being developed for the LP are Gas Electron Multiplier, Micromegas and GridPix. All technologies have been studied with an electron beam in a 1 Tesla magnet at DESY. Successful test beam campaigns with several modules of MPGD readouts have been carried out in 2014 and 2015. Results regarding transverse and longitudinal spatial resolution will be presented with an emphasis on efficiency for reconstructing hits, measurement of the drift velocity, space point resolution, ion gate and control of field inhomogeneity. The future goals for the operation of a TPC at the ILC will also be summarized.
        Speaker: Alain Bellerive (Carleton University (CA))
    • 09:00 10:50
      Diversity and Inclusion: 1 Huron

      Huron

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Conveners: Brian Nord (Fermi National Accelerator Laboratory), Paula Eerola (University of Helsinki (FI))
      • 09:00
        Introductory Remarks 5m
        Speaker: Zeblon Vilakazi (U. Witwatersrand)
      • 09:05
        Ground Rules and Guidelines 3m
        Speaker: Brian Nord (Fermi National Accelerator Laboratory)
      • 09:08
        Project Juno: Advancing Gender Equality In Physics Careers In Higher Education In The UK 2m

        The Institute of Physics (IOP) has a longstanding interest in diversity issues, particularly around the participation of girls and women in physics, who are under-represented in physics education and employment. In 2003, the Institute introduced a Site Visit scheme, in which selected panels visited physics departments and produced a dedicated report on their “gender inclusiveness”. After two years, the results of these visits were condensed into a general report: Women in University Physics Departments: a Site Visit Scheme. Building upon the best practice identified in this influential report, in 2007 the IOP established Project Juno, an award scheme that aims to promote gender equality in higher education physics departments. The Juno Principles provide a framework for specific actions to improve the participation and retention, particularly of women, in physics careers. The main aims of the scheme are to develop an equitable, open and transparent working culture in which students and staff, men and women, can all achieve their full potential; to promote open discussion of gender and other equality issues; and to encourage departments to determine priorities for action. Departments submit for the award and are assessed by an independent Panel of physicists with longstanding experience of addressing gender equality issues. There are three levels of the scheme (Supporter, Practitioner and Champion) and almost all of the 55 physics departments in the UK and Ireland are now participating, together with Research Institutes and one company. Currently, there are 22 Supporters, 14 Supporters and 15 Champions.

        Speaker: Marcella Bona (Queen Mary University of London (UK))
      • 09:10
        A New US-CERN Summer Program on ATLAS Experiment of LHC at CERN for California State University System 2m

        Professional physicists are a largely homogeneous group. According to the American Institute of Physics's Statistical Research Center, only 17% of bachelor's degrees and 12% of PhDs in the US go to women; 8% of bachelors and 1% PhDs go to Hispanic, African American and Native American students. In contrast, the college age US population is 50% women and 28% Hispanic, African American and Native American, which indicates that a large fraction of potential physics talent is untapped. Myriad factors, from institutionalized racism to lack of exposure about STEM careers, contribute to this gap in participation. Closing this gap requires concerted effort on many fronts. This abstract focuses on one such front: providing access to quality research opportunities for students from under represented groups through a summer research program through the Nuclear and Particle Physics Consortium at the California State University (CSU) system.

        With 23 campuses serving over 450,000 students from a diverse range of backgrounds, the CSU system is the largest public university system in the United states. It is also a minority serving institution. In 2013, the student body was 41% Latino (32% Mexican American) and 5% African American. At least 35% are the first person in their family to attend college. However, the campuses have limited research opportunities for students. We will discuss a program started by Professor Yongsheng Gao of CSU Fresno, and supported by the NSF International Research Experiences for Students and several CSU campuses, to provide CSU students with summer research experiences at CERN with mentors from a variety of institutions. Students are prepared for the program by taking an online course on particle physics taught by Professor Gao, and doing several months of practical tutorials with CSU Fresno and Stanford University students and postdocs. Our talk will focus on the preparation and experiences of both the student and mentors.

        Speakers: Lauren Alexandra Tompkins (Stanford University (US)), Yongsheng Gao (California State University (US))
      • 09:12
        The early career, gender, and diversity actions within the LHCb Collaboration 2m

        Numerous surveys of modern particle physics indicate that the discipline is still largely a male pursuit, and one in which women and other marginalised groups continue to face discriminatory practices. The fraction of female particle physicists reduces with each career stage. Early career particle physicists face precarious employment conditions with serial short term contracts, long working hours, the frequent need to relocate, and little prospect for a permanent academic position. There are indications that these employment conditions add to the gender-imbalance in the field, but clearly, this problem directly affects both male and female early career scientists. The LHCb experiment has, as the first (and so far only) LHC experiment, created a dedicated office for Early Career Gender and Diversity (ECGD) (see http://lhcb.web.cern.ch/lhcb/ECGD_Office/ECGD-intro.html ). The ECGD office’s role is to to advise the management on ECGD matters; provide a point of contact for anybody experiencing any kind discrimination, bullying or harassment; collate regular statistics and other relevant information related to gender and, where appropriate, other ECGD matters; organise regular open meetings where ECGD matters are discussed. We report on our first year of experiences as the first ECGD officers in the LHC’s first ECGD office. Amongst the pitfalls of such an office is the potential of being perceived as either inconsequential, or as an external body that is a source of new rules and complications. We will highlight the strategies we adopted in an attempt to circumnavigate these pitfalls, aiming to be (and be seen as) an integral part of LHCb, working with the entire collaboration to achieve an environment in which all members can thrive. We will also discuss a few highlights of our programme in that year, including well-attended plenary meetings at LHCb weeks on topics such as “mentoring”, “(m/p)aternity leave”, “sexual harrassment”, “careers inside and outside HEP” - and the implementation of a mentoring scheme.

        Speakers: Barbara Sciascia, Jonas Rademacker (University of Bristol (GB))
      • 09:14
        Composition of the ATLAS Collaboration 12m
        The ATLAS collaboration consists of about 5,000 members from 178 institutes in 38 countries. About half of the members of the collaboration are scientific authors of the papers, and there are about 1,200 students on the collaboration. This note presents data showing aspects of the composition of the collaboration. In particular the relative fraction of women is described at several levels in the hierarchy of the ATLAS experiment.
        Speaker: Joleen Pater (Manchester)
      • 09:26
        Creating Inclusive Work Environments -- to break culture-cloning 12m
        We have all chosen to work with science and research in large collaborations. Large collaborations are like small communities: there are many benefits that allow us to be creative by taking advantage of each others competences; ideas can be developed that would have been impossible for an individual to achieve. But we also have a responsibility towards each other in terms of respect and inclusion to create a healthy and functioning environment. Choosing science should imply choosing a good working environment: science laboratories have to be an attractive place for young researchers from a diverse background. CERN former Director General Rolf Heuer said that "the best teams to work in are those with the greatest diversity" [1]. But how should we create an inclusive work environment for everyone? We need to raise awareness about sexism, racism, patriarchy and homophobia. Silence about categorization is what makes the unfair distribution of power surviving. With this contribution I want to present and discuss ideas that was first introduced by Philomena Essed and David Theo Goldberg [2], and later lead to a study at Lund University by Kerstin Sandell [3]. A central concept in the research is "insideness", which conceptualize positions of privilege and inclusion, in contrast to exclusion, as well as "cloning cultures" -- a concept describing how cultures are reproduced and promotes organizational similarity: a similar organizational structure as the consisting one tend to be preferred in front of what is different or abnormal. When academic positions are filled, or research money should be distributed, people (or projects) tend to be prioritized if they mirror the academic culture, i.e. sameness produce sameness, which gives privilege to the same kind of people over and over again. In order to deal with this social injustice of sameness, we need to problematize and challenge the system that preserves it and (consciously or unconsciously) favors sameness. We can do this by breaking the (re)production of organizational insideness. This can be accomplished under an organized diversity work and examples will be given of how such work can be done. [1] http://home.cern/cern-people/opinion/2014/03/celebrating-diversity-cern [2] Philomena Essed and David Theo Goldberg,Cloning cultures: the social injustices of sameness, Ethnic and Racial Studies (2002) [3] Kerstin Sandell, Att bryta innanförskapet: kritiska perspektiv på jämställdhet och mångfald i akademin, Makadam förlag (2014)
        Speaker: Tuva Ora Herenui Richert (Lund University (SE))
      • 09:38
        Increasing diversity in science 12m
        Science benefits from increasing diversity. The importance of human contribution in the scientific path is often ignored: every day individuals change the way science is done. Lack of diversity within the scientific community can result in a limited number of questions we ask, the type of problems we think and the way to solve them. A science working to its full potential is one that incorporates diversification. Promoting and increasing effective solutions to this diversity issue is not an easy task. It requires efforts at all levels. Governmental collaborative programs clearly play an important role by encouraging individuals from different backgrounds to combine efforts in scientific research. In this talk we will review different collaborative overseas programs and their impact.
        Speaker: Maria Isabel Pedraza Morales (Autonomous University of Puebla (MX))
      • 09:50
        Benefits of diverse and interdisciplinary co-creation for HEP - a showcase 12m
        THE Port association organises interdisciplinary co-creational hackathons at CERN. Combining physicists and engineers working on HEP topics in their day job with researchers, entrepreneurs, artists, designers, humanitarian workers and other creative minds demonstrate similar needs for IT, material and engineering solutions throughout the full spectrum of disciplines. Concentrating on humanitarian and social benefit topics the technology opportunities identify new methods, materials and processes, that can be feed back into HEP. Some examples will be showcased.
        Speaker: Daniel Dobos (CERN)
      • 10:02
        Bridge Programs as an approach to improving diversity in physics 12m
        In most physical sciences students from underrepresented minority (URM) groups constitute a small percentage of earned degrees at the undergraduate and graduate levels. Bridge programs can serve as an initiative to increase the number of URM students that gain access to graduate school and earn advanced degrees in physics. This talk will discuss levels of representation in physical sciences as well as some results and best practices of current bridge programs in physics.
        Speaker: Brian Beckford (University of Michigan)
      • 10:14
        Panel Discussion 36m
        Speaker: Inclusivity in our work environments
    • 09:00 10:45
      Formal Theory Developments: 1 Superior A

      Superior A

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      Conveners: Dr Ivonne Zavala (Swansea University), Ruth Gregory (Durham University)
      • 09:00
        The fate of the Higgs Vacuum (15' + 5') 20m

        Now that the Higgs boson has finally been detected, its mass suggests that we are in a region of "metastability", with various claims being made about the lifetime of the vacuum. However, the new minimum lies in a Planckian regime, and we would expect gravity to be relevant in any decay process. The decay of a false vacuum is always described by a tunneling process, the Coleman-de Luccia instanton, however, this assumes our universe is featureless. Just as impurities can act as nucleation sites of a phase transition, gravitational impurities, in the guise of black holes, can act as bubble nucleation sites for false vacuum decay. I will describe how a black hole can significantly enhance the probability of vacuum decay, and discuss implications for the Higgs vacuum.

        Speaker: Ruth Gregory (Durham University)
      • 09:20
        Gauge-independence of tunneling rates (15' + 5') 20m
        Despite the gauge dependence of the effective action at zero and finite temperature, it is shown that it leads to tunneling and nucleation rates that remain independent of the choice of gauge-fixing. Taking as a starting point the path integral that defines the transition amplitude from a false vacuum to itself, a careful treatment of the boundary conditions and the gauge-fixing allows to show that decay rates are exactly determined by the effective action evaluated at a generalized bounce configuration. The latter is a solution to the quantum equations of motion, with boundary conditions fixed by the false vacuum. The resulting tunneling rate is gauge-independent, as the Nielsen identities imply that the explicit gauge dependence in the effective action is exactly cancelled by the gauge dependence of the solution. This holds for any election of gauge-fixing that leads to an invertible Faddeev-Popov matrix. The result is nonperturbative and model-independent, and also clarifies how to incorporate radiative corrections in tunneling calculations.
        Speaker: Carlos Tamarit (IPPP Durham)
      • 09:40
        The Dirac Equation in Low Energy Condensed Matter Physics (15' + 5') 20m
        Electrons in low energy condensed matter physics are typically treated using the non relativistic Schrodinger or Pauli equations, with relativistic effects included, if at all, via corrections of order v/c. We show that using the full Dirac equation with 4-component spinors leads to a number of important qualitative effects and, perhaps surprisingly, some striking simplifications over the conventional lower energy treatments, even for nuclei with Z>2.
        Speaker: John Swain (Northeastern University (US))
      • 10:00
        Extension of the CPT Theorem to non-Hermitian Hamiltonians and Unstable States (15' + 5') 20m
        We extend the CPT theorem to quantum field theories with non-Hermitian Hamiltonians and unstable states. Our derivation is a quite minimal one as it requires only the time-independent evolution of scalar products, invariance under complex Lorentz transformations, and a non-standard but nonetheless perfectly legitimate interpretation of charge conjugation as an antilinear operator. The first of these requirements does not force the Hamiltonian to be Hermitian. Rather, it forces its eigenvalues to either be real or to appear in complex conjugate pairs, forces the eigenvectors of such conjugate pairs to be conjugates of each other, and forces the Hamiltonian to admit of an antilinear symmetry. The latter two requirements then force this antilinear symmetry to be CPT, while forcing the Hamiltonian to be real rather than Hermitian. Our work justifies the use of the CPT theorem in establishing the equality of the lifetimes of unstable particles that are charge conjugates of each other. We show that the Euclidean time path integrals of a CPT-symmetric theory must always be real. In the quantum-mechanical limit the key results of the PT symmetry program of Bender and collaborators are recovered, with the C-operator of the PT symmetry program being identified with the linear component of the charge conjugation operator.
        Speaker: Prof. Philip Mannheim (University of Connecticut)
      • 10:20
        Near-BPS Skyrme Models: recent developments (15' + 5') 20m
        We present our most recent results regarding Near-BPS Skyrmions and argue that they provide an improved description of nucleons and nuclei. For some years now, the Skyrme Model and extensions have been considered natural candidates for a low-energy effective theory of QCD, a point of view supported by results coming from 1/N expansion and holographic QCD. This framework leads to an attractive picture: baryons (and nuclei) emerge as topological solitons with a topological number identified to the baryon number. But the most naive Skyrme Model extensions have been plagued with the same problem: they predict large binding energies for the nuclei. On the other hand, the solutions that arise from the more recently proposed near-BPS Skyrme models nearly saturate the Bogomol’nyi bound which means that by construction there must have small binding energies. We address a number of issues related to the strength of each terms in the Lagrangian and the form of the potential of these models with their consequences on the baryon density configurations, Coulomb energies, isospin symmetry breaking, binding energies and mean radius of the nuclei, the pion mass and more.
        Speaker: Luc Marleau (Université Laval)
    • 09:00 10:50
      Higgs Physics: 7 Chicago 9

      Chicago 9

      Conveners: Kirill Prokofiev (The Hong Kong University of Science and Technology (HK)), Stefania Gori (Perimeter Institute/Cincinnati University)
      • 09:00
        Searches for charged Higgs bosons using the CMS detector (12' + 3') 15m
        Recent results on searches for charged Higgs bosons at the LHC by the CMS collaboration are presented. Charged Higgs bosons have bean searched for in top quark decays for lower mass and directly produced for higher masses. Charged Higgs boson decays into tau nu, cs and tb have been exploited.
        Speaker: Andrea Carlo Marini (Massachusetts Inst. of Technology (US))
      • 09:30
        ATLAS Higgs physics prospects at the high luminosity LHC (12' + 3') 15m
        The Higgs physics prospects at the high-luminosity LHC are presented, assuming an energy of sqrt(s) = 14 TeV and a data sample of 3000 fb-1. In particular, the ultimate precision attainable on the couplings measurements of the 125 GeV particle with elementary fermions and bosons is discussed, as well as perspectives on the search for the Standard Model di-Higgs production, which could lead to the measurement of the Higgs boson self-coupling.
        Speaker: Thomas Koffas (Carleton University (CA))
      • 09:45
        Higgs physics in pp collisions at 100 TeV (20' + 5') 25m
        A 100 TeV pp collider, with a statistics of over 10 billion produced Higgs bosons, offers many opportunities for precision measurements, searches of rare or forbidden decays, and studies of production in extreme kinematical configurations, potentially sensitive to new short-distance phenomena. This presentation reviews recent progress in these explorations, done in the framework of the Future Circular Collider Study.
        Speaker: Michelangelo Mangano (CERN)
      • 10:10
        Higgs Physics at CEPC (15' + 5') 20m
        Focusing on the Post-Higgs-Discovery era of High Energy Frontier, the CEPC is envisioned to be a future circular collider with multiple operation phases. The CEPC has a total circumference of at least 54 km and at least two interaction points. In its 10 years operation at ~240 GeV with the focus on collecting a sample of ~1M e+e- -> ZH events, the CEPC will determine the Higgs couplings to sub-percentage levels. It will also produce 10 billion Z bosons at ~M(Z) in one year and boost the precision of EW measurements by orders of magnitude. This talk summarizes the physics potentials at the CEPC. The complementary between CEPC and other facilities will also be discussed.
        Speaker: Manqi Ruan (Chinese Academy of Sciences (CN))
      • 10:30
        Higgs physics at the LHeC and FCC-he (15' + 5') 20m
        Energy-frontier deep inelastic scattering at 1000 times higher luminosity than HERA is considered with the LHeC and further the FCC-he. These collider configurations provide unique possibilities for high precision studies of the SM and BSM Higgs sector, such as a 1 % accurate measurement of the $H\to b\bar b$ coupling and significant constraints of the H-to-invisible decay at the LHeC, or access to the Higgs self-coupling at the FCC-he, results of which will be presented.
        Speaker: Bruce Mellado Garcia (University of the Witwatersrand)
    • 09:00 10:45
      Neutrino Physics: interaction, x-section Chicago 6

      Chicago 6

      Convener: William Detmold (Massachusetts Institute of Technology)
      • 09:00
        Neutrino-Nucleon Interactions and Lattice QCD (15' + 2') 17m
        We address techniques to make the theoretical underpinning of neutrino-nucleon scattering more robust. We see this foundation as a necessary step to disentangle fundamental physics (such as neutrino oscillation parameters) from nuclear effects. We address a reanalysis of old experiments with elementary targets, model-independent parametrizations of nucleon form factors based on analyticity, and lattice QCD calculations of the form factors.
        Speaker: Aaron Meyer (University of Chicago)
      • 09:17
        Neutrino-Interactions with nuclei and Long Baseline Experiments (15' + 3') 18m
        Neutrino beams are necessarily broad in energy. This poses a unique challenge for any cross section studies with neutrinos since the incoming energy is not known, but must be reconstructed event-by-event. The reconstruction usually uses either kinematics for quasielastic scattering or a calorimetric approach in which the final state energy is measured. Both methods require event generators since, in the first method, the quasielastic scattering cannot be uniquely identified and, with the calorimetric method, detectors have acceptance thresholds and often cannot see all final state particles. All presently ongoing (MINERvA, T2K, MicroBooNE) and planned (DUNE) experiments use nuclear targets; this brings the additional complication of event identification in the presence of strong final state interactions. In this talk I will argue that the planned precision era experiments require a new approach to generators that embed the latest knowledge of nuclear physics and of dynamic treatments of many-particle systems. Nuclear many-body theory has given so far unavailable insight into the response of static nuclei to electroweak couplings. Transport theory, well accepted and widely used in other areas of physics and also of nuclear physics, could help to improve the dynamical description of high-energy neutrino-nucleus interactions. Examples for such an approach will be given in this talk, together with some predictions for the LBNF near detector. * work partially supported by DFG
        Speaker: Ulrich Mosel (Universitaet Giessen)
      • 09:35
        Model-independent determination of the axial mass parameter in quasielastic antineutrino-nucleon scattering (15' + 2') 17m
        Understanding the charged current quasielastic (CCQE) neutrino-nucleus interaction is important for precision studies of neutrino oscillations. The theoretical description of the interaction depends on the combination of a nuclear model with the knowledge of form factors. While the former has received considerable attention, the latter, in particular the axial form factor, is implemented using the historical dipole model. As was suggested in 2011, instead of the dipole model one can use a model independent approach based on the z expansion. We use this method to analyze muon antineutrino CCQE mineral oil data published by the MiniBooNE collaboration. We combine the cross section for scattering of antineutrinos off protons in carbon and hydrogen, using the same axial form factor for both. The extracted value of the axial mass parameter is in very good agreement with the model independent value extracted from MiniBooNE’s neutrino data. Going beyond a one-parameter description of the axial form factor, we extract values of the axial form factor finding a very good agreement with the analogous extraction from the neutrino data. We discuss the implications of these results.
        Speaker: Gil Paz (Wayne State University)
      • 09:52
        Axial-Current Matrix Elements in Light Nuclei from Lattice QCD (15' + 3') 18m
        I will present results of recent lattice QCD calculations of axial-current matrix elements in light nuclei performed by the NPLQCD collaboration. Precision calculations of these matrix elements, and the subsequent extraction of multi-nucleon axial current operators, are essential in refining theoretical predictions of neutrino-nucleus cross sections and double-beta decay rates of nuclei. In addition, they are expected to shed light on the phenomenological quenching of gA required in nuclear many-body calculations.
        Speaker: Martin Savage (Institute for Nuclear Theory)
      • 10:10
        Flux and Cross-section Measurements in Minerva (18' + 2') 20m

        Text coming

        Speakers: Michael Kordosky (William and Mary), Mike Kordosky (College of William and Mary)
      • 10:30
        Measurements of Neutrino Cross-sections on Different Nuclear Targets in Minerva (13' + 2') 15m

        Text coming

        Speaker: Julian Felix (Universidad de Guanajuato)
    • 09:00 10:45
      Strong Interactions and Hadron Physics: Diffraction Ontario

      Ontario

      Conveners: Emily Laura Nurse (University of London (GB)), Robert Schoefbeck (Ghent University (BE))
      • 09:00
        Diffraction at the LHC (15' + 5') 20m
        Merged abstract coming
        Speaker: Antonio Vilela Pereira (Universidade do Estado do Rio de Janeiro (BR))
      • 09:20
        exclusive production at HERA (15' + 5') 20m
        Merged abstract
        Speaker: Mariusz Przybycien (AGH University of Science and Technology (PL))
      • 09:40
        Hard diffraction at HERA (15' + 5') 20m
        Merged abstract
        Speaker: Arthur Bolz (University of Heidelberg)
      • 10:00
        Exclusive production at the LHC (15' + 5') 20m
        Merged abstract
        Speaker: Paula Collins (CERN)
      • 10:20
        Latest results from the LHCf Experiment (12' + 3') 15m
        The LHCf experiment, located at $\pm$ 140 m from the ATLAS interaction point, has been conceived to measure the neutral particles produced in the vey forward region (η > 8.4) at LHC. The experiment has taken data both in p-p at different c.m.s. energies and in p-Pb collisions. These measurements are extremely useful to calibrate the hadronic interaction models currently used for the study of the development of very high energy cosmic ray's induced showers in the atmosphere. This talk will describe the latest LHCf physics results both for p-p and p-Pb collisions, with particular emphasis to the preliminary results obtained in the analysis of 13 TeV p-p data.
        Speaker: Takuya Suzuki (Waseda University)
      • 10:35
        Strangeness and light flavor production as a function of multiplicity in proton-proton collisions measured with ALICE (8' + 2') 10m
        The production of $\pi^{\pm}$, $K^{\pm}$, $K^{0}_{S}$, $p$ ($\bar{p}$), $\Lambda$, $\Xi^{-}$ ($\bar{\Xi}^{+}$) and $\Omega^{-}$ ($\bar{\Omega}^{+}$) hadrons is measured at midrapidity in proton-proton (pp) collisions at $\sqrt{s}$ = 7 TeV as a function of charged-particle multiplicity. In order to avoid autocorrelation biases, events are classified according to the signal measured in the VZERO detector, located at forward rapidity, and observables are studied as a function of average charged-particle multiplicity at midrapidity, $\langle {\rm d}N_{\rm ch}/{\rm d}\eta \rangle$. The transverse momentum distributions of all measured particles are observed to become harder for higher multiplicity collisions and the baryon-to-meson ratios $p$/$\pi$ and $\Lambda$/$K^{0}_{S}$ exhibit an evolution similar to what is observed in collisions involving nuclei. In nucleus-nucleus collisions, such features are usually interpreted as consequences of a hydrodynamical evolution of the colliding system. The production rate of strange particles increases faster with $\langle {\rm d}N_{\rm ch}/{\rm d}\eta \rangle$ than those of non-strange hadrons. Therefore, strange particle production is enhanced relative to pions in high multiplicity pp collisions, similarly to what occurs in proton-nucleus and nucleus-nucleus collisions at the LHC. These results represent the first observation of an enhanced production of strange hadrons in high-multiplicity pp collisions. This increase of strangeness production is seen to depend on the number of strange valence quarks and is of more than a factor two for the $\Omega$ for the highest multiplicity studied, which is of approximately three times the inclusive value. Particle ratios of species with no strange quark content, such as $p$/$\pi$, exhibit no dependence with multiplicity, indicating that the phenomenon does not relate to mass but rather to strangeness content. None of the common Monte Carlo models used at LHC energies is able to describe these observations, suggesting that particle production mechanisms need to be revisited in these models.
        Speaker: David Dobrigkeit Chinellato (Universidade Estadual de Campinas (BR))
    • 09:00 10:45
      Technology Applications and Industrial Opportunities: 1 Superior B

      Superior B

      Sheraton Grand Chicago 301 East Water Street Chicago IL 60611 USA
      • 09:00
        Maximizing the dissemination of HEP technologies to society: the CERN model (25' + 5') 30m

        With its ambitious scientific programme to discover new physics, CERN has to continuously innovate to push the boundaries of technology and achieve ever higher levels of energy and luminosity in the Large Hadron Collider and to detect and process intelligently collisions of interest which occur in the LHC experiments.

        Equally ambitious is CERN’s approach to transferring those technologies to society for applications beyond high energy physics, where the primary driver is to maximize dissemination and impact. This approach of putting society first, has deep implications on our dissemination strategy: favouring open dissemination models, addressing the entire business spectrum from fledgling start-up to established and mature companies, and ensuring that CERN has both a global and a local impact within its member states.

        This presentation will cover how CERN maximizes dissemination, illustrated with examples from each of its main technology pillars (Detectors, Accelerators and Computing) and their journey from birth to application in industry, as well as what’s in it for industry to work with CERN and the opportunities in particular for ambitious entrepreneurs to start their company on the basis of CERN technology.

        Speaker: David Mazur (CERN)
      • 09:30
        Academia and Industry cooperation for promoting advanced accelerator (20' + 5') 25m
        Advanced Accelerator Association Promoting Science and Technology (AAA) was established in Japan, in 2008. International Linear Collider (ILC) is one of the main themes of our study. We organized a number of symposiums and other activities to gain broad public understanding the ILC and other particle accelerators and the industrial opportunities. Our members of industry side have been studying the accelerator technologies and their applications in collaboration with the academia members. The detail of these activities will be presented.
        Speaker: Masanori Matsuoka (Advance Accelerator Association Promoting Science and Technology (AAA))
      • 09:55
        Fraunhofer IZM – Applied Research in Electronic Packaging for High Energy Physics Experiments 25m

        As part of the Fraunhofer-Society, Fraunhofer Institute for Reliability and Microintegration (IZM) specializes in applied and industrial contract research. Fraunhofer IZM’s focus is on packaging technology and the integration of multifunctional electronics into systems. Due to the knowledge in electronic packaging, system integration and reliability engineering Fraunhofer IZM has been a partner for high energy physics experiments since more than sixteen years. One main focus is the development and manufacturing of hybrid pixel detector modules. Pixel detector modules from Fraunhofer IZM are part of the vertex tracking detectors of ATLAS and CMS at the LHC at CERN as well as part of CSPADs at LCLS at SLAC. Furthermore modules were produced for many other research groups and companies from all over the world, starting from one device for first prototyping up to a low volume production of several hundred modules. With the focus on applied research and development there are different collaboration models possible. Besides short term direct contract research and development or direct manufacturing services also long term strategic alliances and cooperative projects have been started together with research groups from high energy physics experiments.

        The talk will give an overview of applied research topics and opportunities for collaboration with Fraunhofer. Moreover different projects that have been started with partners from high energy physics experiments and new developments related to electronic packaging will be presented.

        Speaker: Ehrmann Oswin
      • 10:20
        Technology transfer: Another contribution from High Energy Physics (20' + 5') 25m
        Advanced technologies developed for novel accelerator and detector in HEP projects are valuable treasure of society. Sometimes those technologies have unique and complimentary merit which can never been developed in an industrial section alone and therefore their transfer would benefit society substantially. In this presentation, status of collaboration with companies in machine and detector development are reported to promote discussion onfuture directions toward more fruitful and effective transfer in the both sectors.
        Speaker: Haba Junji (KEK)
    • 10:45 11:15
      Break 30m
    • 11:05 13:00
      Higgs Physics: 8 Chicago 9

      Chicago 9

      Conveners: Kirill Prokofiev (The Hong Kong University of Science and Technology (HK)), Stefania Gori (Perimeter Institute/Cincinnati University)
      • 11:05
        Higgs physics at CLIC (15' + 5') 20m
        The Compact Linear Collider (CLIC) is an option for a future multi-TeV electron-positron collider, offering the potential for a rich precision physics programme, combined with sensitivity to a wide range of new phenomena. The CLIC physics potential for measurements of the 125 GeV Higgs boson has been studied using full detector simulations for several centre-of-mass energies. The presented results provide crucial input to the energy staging strategy for the CLIC accelerator. The complete physics program for measurements of all accessible Higgs boson couplings is presented in this talk. All measurements available at a given centre-of-mass energy were included in combined fits. Operation at a few hundred GeV allows the couplings and width of the Higgs boson to be determined in a model-independent manner through the study of the Higgsstrahlung and WW-fusion processes. At a lepton collider, the measurement of the Higgsstrahlung cross section using the recoil mass technique with leptonic Z decays sets the absolute scale for all Higgs coupling measurements. Recently, it has been shown that this approach can be extended to hadronic decays of the Z boson which improves the statistical precision significantly. Operation at higher centre-of-mass energies provides large statistics for the study of Higgs boson decays and the potential to directly measure the top Yukawa coupling. At the highest centre-of-mass energy (presently assumed to be 3 TeV), the Higgs boson self-coupling can be determined with 10% precision.
        Speaker: Strahinja Lukic (University of Belgrade (RS))
      • 11:25
        probe the electroweak phase transition from the precision hZZ coupling measurement at future colliders (12' + 3') 15m
        We study the correlation between the value of the hZZ coupling and the nature of the electroweak phase transition. We also consider a singlet extension of the SM to study the correlation of the hZZ coupling and the first order phase transition. Furthermore, we study how the further colliders, for example CEPC and ILC, can probe the precision hZZ coupling.
        Speaker: Peisi Huang (University of Chicago/Argonne National Laboratory)
      • 11:40
        CEPC benchmark analyses: Higgs recoil analysis and Higgs width measurement (15' + 5') 20m
        The CEPC collider is designed to be operated as a Higgs factory at the ~240 GeV center-of-mass energy. Comparing to the proton-proton collider, one of the most distinguishable advantage of such an electron-positron collider is the model-independent tagging of Higgs boson via the recoil mass method. This method allows absolute measurement of the couplings between Higgs boson and other most fundamental particles, and provides a very sensitive probe to the Higgs exotic decays. Benefitting from the recoil mass method applied on ZH events, the absolute widths of the Higgs boson can be measured to the percentage level at the CEPC. The Higgs boson width determination is complex as it requests the combination of many individual physics analyses. It involves the H->WW, ZZ branching fraction measurements, which demands an efficient identification and precise measurement of a full set of physics objects: isolated lepton, missing energy/momentum and jets. This talk reports full simulation study of e+e- -> ZH in CEPC to determine sigma(ZH), the mass of the Higgs, and the upper limits of the Higgs to invisible, leptonic and hadronic exotic final states. This talk also summarizes the status of the simulation study of the measurement of the Higgs boson widths at the CEPC. Preliminary results of the detector optimization towards these measurements will also be presented.
        Speaker: Zhenxing Chen (Peking University & IHEP)
      • 12:00
        Singlet-Catalyzed Electroweak Phase Transitions in the 100 TeV Frontier (12' + 3') 15m
        We study the prospects for probing a gauge singlet scalar-driven strong first order electroweak phase transition with a future proton-proton collider in the 100 TeV range. Singlet-Higgs mixing enables resonantly-enhanced di-Higgs production, potentially aiding discovery prospects. We perform Monte Carlo scans of the parameter space to identify regions associated with a strong first-order electroweak phase transition, analyze the corresponding di-Higgs signal, and select a set of benchmark points that span the range of di-Higgs signal strengths. For the bbBar+diphoton and the 4tau final states, we investigate discovery prospects for each benchmark point for the high luminosity phase of the Large Hadron Collider and for a future collider with center-of-mass energy of 50, 100 or 200 TeV. We find that any of these future collider scenarios could significantly extend the reach beyond that of the high luminosity LHC, and that with center-of-mass energy of 100 TeV (200 TeV) and 30/ab, the full region of parameter space favorable to strong first order electroweak phase transitions is almost fully (fully) discoverable.
        Speaker: Dr Peter Winslow (University of Massachusetts, Amherst)
      • 12:15
        Higgs measurements at the Future Circular Colliders (12' + 3') 15m
        After the Higgs boson discovery, the precision measurements and searches for new phenomena in the Higgs sector are among the most important goals in particle physics. Experiments at the Future Circular Colliders (FCC) are ideal to study these questions. Electron-positron collisions up to an energy of 350 GeV (FCC-ee) provide the ultimate precision with studies of Higgs boson couplings, mass, total width and CP parameters, as well as searches for exotic and invisible decays. The feasibility of observation of the s-channel production e+e- → H(125) is reviewed. We conclude by noting the remarkable complementarity of the FCC-ee and FCC-hh colliders, which in combination offer the best possible overall study of the Higgs boson properties.
        Speaker: David d'Enterria (CERN)
      • 12:30
        Measurement of the Higgs self-coupling at the ILC (20' + 5') 25m
        The self-coupling of the Higgs boson is a fundamental ingredient in the physics of electroweak symmetry breaking. Measurement of this parameter will give evidence on the form of the Higgs field potential and that nature of the phase transition to electroweak symmetry breaking in the early universe. In this talk, we will present estimates of the measurement accuracy for this parameter in e+e- collisions based on full-simulation studies for the ILC at 500 and 1000 GeV and put them in context with the situation at other colliders. The Higgs self-coupling is always measured through interference with other Standard Model diagrams. Thus, it is an advantage to measure multiple processes with different signs of the interference term, as can be done already at the ILC at 500 GeV. The talk will also update the expectations for precision measurement of the other Higgs boson couplings at the ILC, where model-independent measurements with part-per-mille accuracy are expected for many couplings.
        Speaker: Jan Fridolf Strube
    • 11:10 13:10
      Diversity and Inclusion: 2 Huron

      Huron

      Conveners: Brian Nord (Fermi National Accelerator Laboratory), Paula Eerola (University of Helsinki (FI))
      • 11:10
        Session of International Outreach and Capacity Development 12m
        We propose a session dedicated to the various efforts in outreach and capacity building in physics and related applications in developing countries. The session should cover the activities carried out by large scale international institutes and government agencies to attract and train students from developing countries, and as well to retain the students, once trained, within their geographical areas, thus increasing capacity and lessening the impact of “brain drain”. International cooperation is a large common denominator of the culture of scientific activities. However, in many scientific disciplines and especially in our field of fundamental physics, the cooperation among developing countries and between them and northern countries is not sufficiently developed. This is especially the case for sub-Saharan Africa. We therefore want to extend the usual international scientific ties in our field to this geographical zone. With this session, it is our aim to support academic and research cooperation in fundamental physics with countries in developing countries by bring together the scientific community participating in the workshop with the organizers of the various education and outreach efforts in developing countries. There are well established synergies between high energy physics and other areas. For example in astrophysics, there is an overlap in several crucial science questions: theories and experiments in particle physics are part of cosmological and astrophysical models — in particular Dark Matter, Dark Energy, Dense Matter, neutrino physics, the Standard Model and beyond, exotic physics. There is a further overlap in issues of detectors and high throughput electronics technological advances at CERN, joint R&D with SKA, high performance computing (Grid, GPU, Raspberry computing), training, management and roll-out of local infrastructure. These synergies also exist for remote sensing in industry, big data computing, medicine, and many other areas. Such synergies and spin-offs are already part many outreach programs such as the African School of fundamental physics and applications (ASP), and they can be further integrated with careful planning and partnerships. Currently, the ASP program does include lectures and discussions in astronomy, astro particle physics and cosmology. This will, in time, evolve to formally include dedicated lectures on SKA, CTA, etc. A number of ASP students have become graduate students in large multinational experiments such as ATLAS, CMS or ALICE. For this session, we propose a few talks on the CERN and ICTP outreach programs, ASP, AIMS, and RISE as examples of capacity development programs initiated by the international scientific community in partnership with government education and research policy makers in the developing countries. The talks will be followed by a discussion on how these various program can work together in synergy towards great positive impact.
        Speaker: Ketevi Adikle Assamagan (Brookhaven National Laboratory (US))
      • 11:22
        Promoting Women in Physics in South Africa 12m
        Recent attention to the declining number of women studying physics at universities in South Africa motivated the authors to launch a poster campaign to tackle the issues. The project focused on 7 female physicists from PhD students to professors, in South Africa. Through interviews and photography the authors created a series of posters to be sent to over 200 high schools, each presenting a portrait of the physicists, some background about their careers and research, and their message to young people. The campaign intends to influence and motivate female high school students to study physics and consider a career in research, and to break down stereotypes of physicists and careers in physics to both girls and boys and to the general public. The process behind the campaign will be presented, along with the findings from the research and interviews on the situation of female physicists in South Africa, and an evaluation of the project. The project was sponsored by the University of Cape Town (UCT), the International Centre for Theoretical Physics (ICTP) and the South African Institute of Physics (SAIP) Women in Physics in South Africa (WiPiSA).
        Speakers: Kate Shaw (INFN Gruppo Collegato di Udine and ICTP Trieste), Sahal Yacoob (University of Cape Town (ZA))
      • 11:34
        The early career, gender, and diversity actions within the LHCb Collaboration 12m
        Numerous surveys of modern particle physics indicate that the discipline is still largely a male pursuit, and one in which women and other marginalised groups continue to face discriminatory practices. The fraction of female particle physicists reduces with each career stage. Early career particle physicists face precarious employment conditions with serial short term contracts, long working hours, the frequent need to relocate, and little prospect for a permanent academic position. There are indications that these employment conditions add to the gender-imbalance in the field, but clearly, this problem directly affects both male and female early career scientists. The LHCb experiment has, as the first (and so far only) LHC experiment, created a dedicated office for Early Career Gender and Diversity (ECGD) (see http://lhcb.web.cern.ch/lhcb/ECGD_Office/ECGD-intro.html ). The ECGD office’s role is to to advise the management on ECGD matters; provide a point of contact for anybody experiencing any kind discrimination, bullying or harassment; collate regular statistics and other relevant information related to gender and, where appropriate, other ECGD matters; organise regular open meetings where ECGD matters are discussed. We report on our first year of experiences as the first ECGD officers in the LHC’s first ECGD office. Amongst the pitfalls of such an office is the potential of being perceived as either inconsequential, or as an external body that is a source of new rules and complications. We will highlight the strategies we adopted in an attempt to circumnavigate these pitfalls, aiming to be (and be seen as) an integral part of LHCb, working with the entire collaboration to achieve an environment in which all members can thrive. We will also discuss a few highlights of our programme in that year, including well-attended plenary meetings at LHCb weeks on topics such as “mentoring”, “(m/p)aternity leave”, “sexual harrassment”, “careers inside and outside HEP” - and the implementation of a mentoring scheme.
        Speakers: Barbara Sciascia, Jonas Rademacker (University of Bristol (GB))
      • 11:46
        The Masterclass of particle physics and scientific careers from the point of view of male and female students 11m
        The Masterclass of particle physics is an international outreach activity which provides an opportunity for high-school students to discover particle physics. The National Institute of Nuclear Physics (INFN) in Pisa has taken part in this effort since its first year, in 2005. The Masterclass has become a point of reference for the high schools of the Tuscan area around Pisa. Each year more than a hundred students come to our research center for a day. They listen to lectures, perform measurements on real data and finally they join the participants from the other institutes in a video conference, to discuss their results. At the end of the day a questionnaire is given to the students to assess if the Masterclass met a positive response. Together with specific questions about the various activities they took part in during the day, we ask them if they would like to become a scientist. They are offered about ten possible motivations for a ‘yes’ or a ‘no’ to choose from. The data collected during the years have been analysed from a gender perspective. Attracting female students to science and technology-related careers is a very real issue in the European countries. With this study we tried to investigate if male and female students have a different perception of scientific careers. At the end, we would like to be able to provide hints on how to intervene to correct the path that seems to naturally bring male students towards STEM disciplines (science, technology, engineering, and math) and reject female students from them.
        Speaker: Sandra Leone (Universita di Pisa & INFN (IT))
      • 11:57
        The Davis-Bacall Scholars Program 11m
        Since 2009, a summer program for South Dakota students interested in science and engineering careers have introduced students to the endeavor of scientific research in a five week program. Students entering college or completed one year get the opportunity to study at the Sanford Underground Research Facility and tour other laboratories in the Midwest and Italy. Tracking of the students,including women and under-represented minorities, have shown a high rate of retention in physics and other STEM careers.
        Speaker: Margaret Norris (Sanford Underground Research Facility)
      • 12:08
        Pre-College Science and Engineering for Inner-City Middle School Students 11m
        It is well known that the number of jobs in science and engineering is expected to grow in the next few years. However, the nation’s current student body is not prepared nor sufficiently interested to pursue careers in the science, technology, engineering and mathematics (STEM) fields. More alarming is the fact that the demographics of students that are attracted to STEM fields demonstrate a significant race gap, with Hispanic and African-American students consistently falling behind to their Caucasian and Asian counterparts in STEM engagement. In order to contribute to a diverse STEM pipeline, the College of Engineering and the College of Education at the University of Illinois at Urbana-Champaign have developed an extensive outreach program that targets underrepresented minority students, which involves middle school math and science teachers, middle school students and their parents, and a diverse group of STEM undergraduate students who serve as mentors. The program is an out-of-school program that includes a hands-on curriculum that focuses on “Using Mathematics to Explain the Physical World”, where students use mathematical modeling and real-life situations to delve deep into different scientific and mathematical concepts. With the pilot program launching in fall 2015 with four half-day Saturday sessions held at the University of Illinois at Chicago campus and 50 inner-city, 6th and 7th grade students from the Chicago Public Schools (99% African American and Hispanic/Latino), the spring 2016 program will be expanded to include six Saturday sessions and 75 students. The program seeks to sustain the engagement by launching an additional grade every academic year, with the goal of building a solid and diverse 6th – 12th STEM pipeline. Pre-test and post-test assessments will be used to measure student learning and to determine the change in students’ dispositions towards mathematics and science over time. Participating students will be tracked throughout the program to determine whether or not they were successfully entrenched into the STEM pipeline.
        Speaker: Kevin Pitts (University of Illinois)
      • 12:19
        The Cevale2ve case 11m
        A virtual research and learning community can be a powerful tool for educational purposes. It has a wide range of possibilities for multi-institution participation, such as synchronous and asynchronous online engagement, decentralized student discussions and academic networking - as well as being cost effective. In this context, the CEVALE2VE virtual community (Centro de Altos Estudios de Altas Energías) is a Venezuelan initiative to support the new generation of researchers in high energy physics (HEP). Its goal is to contribute to the scientific dissemination of fundamental physics and the regional modernization of university education. The members of CEVALE2VE are a group of Venezuelan researchers, currently involved in projects related to the HEP field, and geographically located in different academic institutions of Europe and North America. The project involves several academic institutions in Venezuela and Colombia in order to reach a wide audience, and exploits current communications technologies, where data, software tools and information resources are shared. Several activities have been hosted by CEVALE2VE, including a series of public lectures, virtual visits to the ATLAS experiment, the implementation of a virtual course “Introduction to Particle Physics” for undergraduate students with the recent addition of dual Spanish-English material, and the supervision of masters theses in physics and internships in other fields like language studies. The use of the current technologies to share material and interact with the students creates a vibrant and participatory learning environment, having as its meeting point thewww.cevale2ve.org(link is external) portal.
        Speaker: Arturo Sanchez (Universita degli Studi di Napoli Federico II, Universidad de Los Andes)
      • 12:30
        Panel Discussion 30m
        Speaker: Providing access to science
    • 11:15 13:00
      Accelerator: Physics, Performance, R&D and Future Facilities: 5 Superior B

      Superior B

      Convener: Lia Merminga (TRIUMF)
      • 11:15
        500 GeV ILC Operating Scenarios (12' + 3') 15m
        ILC Parameters Joint Working Group The ILC Technical Design Report documents the design of a 500 GeV linear collider, but does not specify the centre-of-mass energy steps of operation for the collider. The ILC Parameters Joint Working Group has studied possible running scenarios and the evolution of physics outcomes based on a realistic estimate of the real time accumulation of integrated luminosity, including initial operations ramp-up and upgrades, constrained by a realistic power budget. These physics goals include Higgs precision measurements, top quark measurements and searches for new physics. We present this "optimized" operating scenario and the anticipated evolution of the precision of the ILC measurements.
        Speaker: Jim Brau (University of Oregon (US))
      • 11:30
        Status and plans of the Compact Linear Collider project (12' + 3') 15m
        The Compact Linear Collider (CLIC) project is exploring the possibility of constructing a multi-TeV linear electron-positron collider for high-energy frontier physics studies beyond the LHC era. The CLIC concept is based on high-gradient normal-conducting accelerating structures. The RF power for the acceleration of the colliding beams is produced by a two-beam acceleration scheme, where power is extracted from a high current drive beam that runs parallel with the main linac. The key ongoing studies involve accelerator parameter optimisation, technical studies and component development, alignment and stability, and include a number of system performance studies in test-facilites around the world. The CLIC physics potential and main detector issues, as well as possible implementation staging, are being studied in parallel. A summary of the progress and status of the corresponding studies will be given, as well as an outline of the preparation and work towards developing a CLIC implementation plan by 2018/19.
        Speakers: Philip Burrows (Oxford University), Steffen Doebert (CERN)
      • 11:45
        Progress towards Electron-beam Feedback at the Nanometre Level, for Linear Colliders and FELs, at the Accelerator Test Facility (ATF2) at KEK (12' + 3') 15m
        Ultra-low latency beam-based digital feedbacks have been developed by the Feedback On Nanosecond Timescales (FONT) Group and tested at the Accelerator Test Facility (ATF2) at KEK in a programme aimed at beam stabilisation at the nanometre level at the ATF2 final focus. This is aimed at beam stabilisation for future electron-positron linear colliders, as well as in electron linacs for FEL light sources. Three prototypes were tested: 1) A feedback system based on high-resolution stripline BPMs was used to stabilise the beam orbit in the beamline region c. 50m upstream of the final focus. 2) Information from this system was used in a feed-forward mode to stabilise the beam locally at the final focus. 3) A final-focus local feedback system utilising cavity BPMs was deployed. In all three cases the degree of beam stabilisation was observed in high-precision cavity BPMs at the ATF2 interaction point. Latest results are reported on stabilising the beam position to approximately 50nm.
        Speaker: Philip Burrows (Oxford University)
      • 12:00
        STF-2 Cryomodule Performance and New Input Coupler R&D for ILC (12' + 3') 15m
        The high power test for STF-2 cryomodule with twelve cavities has completed successfully in 2015. It became clear the average accelerating gradient was 30.3 MV/m, eight cavities achieved above 31.5 MV/m as the ILC specification, and three cavities had the significant performance degradation by heavy field emission due to the additional clean room work in the STF tunnel. As the following next steps, there are the LFD (Lorenz Force Detuning) measurement, LFD compensation by piezo, and long run for check of stable operation at high gradient. In the long run around 32 MV/m, each cavity without degradation showed the stable operation with the successful LFD compensation by piezo and RF feedback system. On the other hand, from the view point of plug-compatibility for the input coupler in the ILC, new STF input couplers with 40mm of input port were re-designed, fabricated and high-power-tested successfully. Moreover, for the lower cost study, another input couplers with coating-free ceramic will be also tested soon in the collaboration of CERN and KEK. In this presentation, the detailed results for STF-2 Cryomodule test and 40mm input couplers are reported.
        Speaker: Yasuchika Yamamoto (KEK)
      • 12:15
        ILC Technical Progress and Prospect (12' + 3') 15m
        Progress in the ILC accelerator design and technical R&Ds is overviewed, and technical prospect for the project realization is discussed. Two key technologies of "nano-beam" and "superconducting RF" have been much progressed and demonstrated, at the KEK Accelerator Test Facility and at the European Free-electron Laser (XFEL) projected, respectively. Based on these technical achievements, the prospect and further necessary preparation work will be discussed.
        Speaker: Prof. Akira Yamamoto (KEK, CERN, and LCC)
      • 12:30
        Next Generation High Brightness Electron Beams From Ultra-High Field Cryogenic Radiofrequency Photocathode Sources (12' + 3') 15m
        Recent studies of the performance of radio-frequency (RF) copper structures operated at cryogenic temperatures have shown a dramatic increase in the maximum surface electric field that may be reached. We propose to utilize this development to enable a new generation of photoinjectors operated at cryogenic temperatures that may attain, through enhancement of the launch field at the photocathode by a factor of four, well over an order of magnitude increase in peak electron beam brightness. We present detailed studies of the beam dynamics associated with such a system, concentrating on an emittance-compensated S-band photoinjector that may directly substitute that of the LCLS X-ray free-electron laser. We show in this case that the increase in brightness leads directly to a factor of two reduction in gain length, with attendant increase in X-ray radiative efficiency. Extreme low emittance scenarios obtained at low operating charge, appropriate for dramatically pushing performance limits of ultrafast electron diffraction and microscopy experiments, are reviewed. Further, a scheme for achieving very low, asymmetric emittances for eliminating the electron damping ring in an linear collider is discussed. While much of the gain in brightness is due to increase of the emission current density via field enhancement, further increases in brightness due to lowering of the intrinsic cathode temperature in cryogenic operation is also enabled. The potential to probe fundamental brightness limits in these cold, dense beam systems is examined. Issues in experimental implementation, including cavity optimization for lowering cryogenic thermal dissipation, external coupling, and cryo-cooler system are discussed.
        Speaker: James Rosenzweig (UCLA)
      • 12:45
        Bent crystals as a tool for manipulation of ultrarelativistic electron beams (12' + 3') 15m
        Channeling and coherent interaction of charged particles in crystals are known since the 60s and used as a tool for material analysis by low-energy ion channeling and for the generation of linearly polarized γ-beams through coherent bremsstrahlung at electron accelerators, such as the MAinzer MIcrotron (MAMI) in Germany and the Jefferson Lab in USA. If the crystal is bent, channeled particles follow the crystal bending and are steered from their initial direction. The usage of bent crystals has been deeply investigated for beam manipulation in hadron accelerators, e.g., the SPS and the LHC, where bent crystals can be exploited for beam steering in crystal-assisted collimation or extraction. Bent crystals may found relevant application also for the manipulation of high-energy e± beams. In this case, beam deflection is accompanied by the generation of electromagnetic radiation. Here, we present the last results on beam steering and intense e.m. radiation generation through interaction of high-energy electrons with bent crystals, by exploiting a coherent effect typical of bent crystals, i.e., the single and multiple volume reflection. Volume reflection consists in the deflection of over-barrier particles in a bent crystal and occurs in a wide angular acceptance, which is equal to the bending angle of the crystal [1]. Multiple volume reflection occurs as a charged particle impacts on a bent crystal at several axial channeling angles with respect to a crystal axis and suffers a series of single volume reflection on several bent crystal planes intercepting the same axis [2]. A wide energy range for electrons has been selected, from sub-GeV at MAMI to hundreds-GeV at CERN. A particular attention is given to the combination of beam steering and intense e.m. radiation generation in view of possible applications, such as an intense X- or γ-ray source for the lowest energies to a crystal-based collimation at the highest ones. A first experiment has been carried out at the CERN SPS-H4 beamline. The radiation emitted by 120  GeV/c electrons traversing a 2-mm long bent crystal under multiple volume reflection was investigated [3]. The recorded energy-loss spectrum of electrons was very intense over the full energy range up to the nominal energy of the beam and much more intense than for an amorphous medium. The radiation generation by multiple volume reflection takes place over a broad angular range of the incident beam with respect to coherent bremsstrahlung and channeling radiation in straight crystals. The large deflection angle (~40 μrad) and wide energy lost by electrons under multiple volume reflection makes this effect suitable for application in crystal-assisted beam dump and collimation for future electron-positron colliders. A second experiment has been carried out at the MAMI facility. We report the first observation of efficient steering of a 0.855 GeV electron beam by means of planar channeling and volume reflection in a bent silicon crystal [4]. A 30.5 μm bent Si crystal was used to steer the electron beam. This experiment opened up the way for the investigation and exploitation of coherent interactions in bent crystals in the Sub-GeV/GeV energy range accessible by many electron accelerators worldwide, e.g. SLAC, and which is interesting for innovative X- or γ-ray sources. The radiation emitted by the electrons via planar channeling and single volume reflection was also recorded [5]. The radiation spectra were much more intense than for an equivalent amorphous material, and peaked in the MeV range. In addition, the intensity of radiation accompanying volume reflection is maintained high in the whole angular acceptance, thus making this effect a good candidate for the realization of a γ-ray source with divergent electron beams. References [1] A. Taratin and S. Vorobiev, Phys. Lett. A 119 (1987) 425 [2] V. Tikhomirov, Physics Letters B 655 (2007) 217 [3] L. Bandiera et al., Phys. Rev. Lett. 111 (2013) 255502 [4] A. Mazzolari et al., Phys. Rev. Lett. 112 (2014) 135503 [5] L. Bandiera et al.,Phys. Rev. Lett. 115 (2015) 025504
        Speaker: Laura Bandiera (Universita di Ferrara & INFN (IT))
    • 11:15 13:00
      Astro-particle Physics and Cosmology: Gravitational Wave Detection: Present and Future Chicago 7

      Chicago 7

      Convener: Shirley Ho (Carnegie Mellon University (US))
      • 11:15
        LIGO's First Observing Run: Gravitational-Wave Astronomy on the Rise (30' + 5') 35m
        On September 15, 2015, subtle ripples in the fabric of space-time were detected by the twin LIGO interferometers, heralding the opening of the first observational run (O1) with second generation interferometers and gravitational-wave astronomy itself. By the close of that run, two additional significant events had been collected along with a wealth of scientific return. With observing scheduled to resume in September, the LIGO and Virgo interferometers are poised to directly measure the properties of a population of binary black holes and their mergers, advancing inquiries into astrophysics and strong-field general relativity which would have been otherwise inaccessible. In this talk, I will highlight many of the important results of the first observing run, explore their implications, and finally delve into some of the possibilities for future runs.
        Speaker: Chris Pankow
      • 11:50
        The Advanced LIGO detectors at the beginning of the new gravitational wave era (30' + 5') 35m
        The two advanced detectors of the Laser Gravitational Wave Observatory (LIGO) recently reported the first direct detection of gravitational waves, opening a new era for astronomy and astrophysics. Even if not yet operating at full sensitivity, Advanced LIGO has already largely surpassed the space-time volume surveyed by previous observations. This talk describes the Advanced LIGO detectors, their current sensitivity performance, and future prospects.
        Speaker: Lisa Barsotti (MIT (US))
      • 12:25
        The State of Gravitational Wave Detection with Pulsar Timing Arrays (30' + 5') 35m
        The use of ensembles of well-timed millisecond pulsars (meaning pulse arrival times are measured with precisions better than 1 microsec) to directly detect nanohertz frequency gravitational waves (GWs) has reached a very important milestone. Our current sensitivities are constraining models of the mergers of super-massive black hole binaries (SMBHBs) throughout the universe. Each of the three main pulsar timing arrays (PTAs; NANOGrav in North America, EPTA in Europe, and the PPTA using the Parkes telescope in Australia) has comparable sensitivity, and over the coming few years, their joint efforts as part of the International Pulsar Timing Array (IPTA), should definitively detect GWs from SMBHBs, or very strongly constrain theories of galaxy and black hole mergers throughout cosmic time. Additionally, by measuring these systems to such high-precision, many "secondary" science products result for "free", such as new neutron star masses which can constrain the high-density matter equation of state, and new tests of general relativity which cannot be achieved here in the solar system. The next few years of millisecond pulsar astronomy should be very exciting.
        Speaker: Scott Ransom (National Radio Astronomy Observatory)
    • 11:15 13:00
      Detector: R&D and Performance: Performance Chicago 8

      Chicago 8

      Convener: Ingrid-Maria Gregor (DESY)
      • 11:15
        Heavy-flavour jet identification at the CMS experiment for Run 2 (12' + 3') 15m
        Identification of jets originating from b or c quarks is important for a wide variety of standard model physics (e.g. final states involving top quarks and Higgs bosons) as well as searches for physics beyond the standard model. Due to the increased center of mass energy in Run 2, final states with boosted b-quark jets become increasingly important. The CMS collaboration developed a number of new tools such as improved b-jet identification algorithms, a first charm-jet tagger, a boosted double b-tagger to discriminate fat jets in which two b jets are present from those in which one b jet is present, ... . In this presentation, we will review these newly developed algorithms. In addition, we will present the performance of the established and new algorithms on the 13 TeV data.
        Speaker: Mauro Verzetti (University of Rochester (US))
      • 11:30
        Performance of the reconstruction, calibration and identification of electrons and photons with the ATLAS detector (12' + 3') 15m
        The performance of the reconstruction, calibration and identification of electrons and photons with the ATLAS detector at the LHC is a key component to realize the ATLAS full physics potential, both in the searches for new physics and in precision measurements. The algorithms used for the reconstruction and identification of electrons and photons with the ATLAS detector during LHC run 2 are presented. Measurements of the identification efficiencies are derived from data. The results from the 2015 pp collision data set at sqrt(s)=13 TeV are reported. The electron and photon energy calibration procedure and its performance are also discussed.
        Speaker: Sarah Heim (University of Pennsylvania (US))
      • 11:45
        New developments in track reconstruction for the ATLAS experiment for Run-2 of the LHC (12' + 3') 15m
        Run-2 of the LHC has provided new challenges to track and vertex reconstruction with higher energies, denser jets and higher rates. In addition, the Insertable B-layer (IBL) is a fourth pixel layer, which has been inserted at the centre of ATLAS during the shutdown of the LHC. We will present results showing the performance of the track and vertex reconstruction algorithm using Run-2 data at the LHC, highlighting the improvements to track reconstruction developed during the two year shutdown of the LHC. These include novel techniques developed to improve the performance in the dense cores of jets, optimisation for the expected conditions, and a big software campaign which lead to a factor of three decrease in the CPU time needed to process each recorded event.
        Speaker: Simone Pagan Griso (Lawrence Berkeley National Lab. (US))
      • 12:00
        Performance of Missing Energy reconstruction at the CMS detector in 13 TeV data (12' + 3') 15m
        The precise understanding of the missing transverse momentum observable is crucial for searches for processes beyond the Standard Model as well as for precision measurements. The high collision rate at the CMS detector during the 13 TeV data-taking periods of the LHC poses challenges to reconstruction far beyond those previously overcome. We will present the performance of missing energy in LHC Run-II data and discuss results on advanced reconstruction algorithms which mitigate the effects of parasitic collisions.
        Speaker: Robert Schoefbeck (Ghent University (BE))
      • 12:15
        Improvement of Spatial Resolution by Selfconsistent Full Muon Track Reconstruction in Gaseous Detectors (12' + 3') 15m
        Full track reconstruction for charged particles in thin gaseous detectors can be achieved using a Time-Projection-Chamber like (TPC) readout and analysis method. This method has proven to be very successfull for thermal neutron detection in gaseous electron multiplier (GEM) detectors, based on the full track reconstruction of the charged Helium and Lithium ions produced in a thin $^{10}$B conversion layer building the cathode of the triple GEM detector. An improvement from FWHM 3.4 mm to 0.25 mm of the spatial resolution of the interaction point of the neutron in the $^{10}$B layer has been observed using an Ar-CO$_2$ gas mixture as detector gas. For the achievable track resolution the driftvelocity and thus the composition of the drift gas is of big importance. A self-consistent algorithm allows for optimized results without the development of gas-parameters, as otherwise usual, in prior test experiments with well known angle of incidence of the ions. Simulations predict, that by application of this method the spatial resolution for minimal ionizing particles can be improved as well. For verification a compact cosmic muon telescope has been commissioned, which consists of three triple GEM detectors with two-dimensional strip readout of 0.4 mm pitch in x and y and one detector with a single strip readout layer of 0.25 mm pitch. All strips are read out by APV25 frontend boards. Muon tracks are reconstructed using the TPC-like method in one of the detectors and are then compared to the predicted track from the other three detectors defined by the center of charge position in every detector. A strong dependence of the composition of the detector gas is expected. We report on our study of Argon and Helium based noble gas mixtures with carbon-dioxide as quencher.
        Speaker: Bernhard Matthias Flierl (Ludwig-Maximilians-Univ. Muenchen (DE))
      • 12:30
        The LArIAT experiment and charged pion total interaction cross section results on liquid argon (12' + 3') 15m
        The Liquid Argon In A Testbeam (LArIAT) experiment is a 0.26 ton active mass Liquid Argon Time Projection Chamber (LArTPC) located at the Fermilab Test Beam Facility. The LArIAT TPC is exposed to a tertiary beam comprised of mostly pions along with a mix of muons, protons, kaons, and electrons in the range ~200 MeV to 2 GeV. The beamline is instrumented with detectors that aid in identification and selection of particle species and momenta. LArIAT will characterize the response of LArTPCs to these known incoming particles, and these data will be used to tune simulations and reconstruction algorithms in support of future LArTPC neutrino experiments. The first inclusive pion interaction cross section measurement ever made on argon will be presented here. This analysis uses data collected during LArIAT’s initial run (Run-I); updates and extensions to the analysis using additional data from Run-II will also be discussed.
        Speaker: Animesh Chatterjee (HRI, INDIA)
      • 12:45
        Tau Identification at CMS in Run II (12' + 3') 15m
        During LHC Long Shutdown 1 necessary upgrades to the CMS detector were made. CMS also took the opportunity to improve further particle reconstruction. A number of improvements were made to the Hadronic Tau reconstruction and Identification algorithms. In particular, electromagnetic strip reconstruction of the Hadron plus Strips (HPS) algorithm was improved to better model signal of pi0 from tau decays. This modification improves energy response and removes the tau footprint from isolation area. In addition to this, improvement to discriminators combining isolation and tau life time variables, and anti-electron in MultiVariate Analysis technique was also developed. The results of these improvements are presented and validation of Tau Identification using a variety of techniques is shown.
        Speaker: Isabel Ojalvo (University of Wisconsin-Madison (US))
    • 11:15 13:00
      Formal Theory Developments: 2 Superior A

      Superior A

      Convener: Ruth Gregory (Durham University)
      • 11:15
        Sub-Leading Effects and the Field Range in Axion Inflation (15' + 5') 20m
        An attractive candidate for the inflaton is an axion slowly rolling down a flat potential protected by a perturbative shift symmetry. Realisations of this idea however are difficult to embed in string theory. I will show that subleading, but significant non-perturbative corrections to the axion potential can superimpose sharp cliffs and gentle plateaus into the potential, whose overall effect is to enhance the number of e-folds of inflation. Sufficient inflation is therefore achieved for smaller field ranges compared to the potential without such corrections. Thus, both single-field chaotic and natural inflation in UV complete theories like string theory, can be restored into the favoured region of current observations with distinctive signatures. Tensor modes result un-observably small, but there is a large negative running of the spectral index. Remarkably, natural inflation can be achieved with sub-Planckian axion decay constants.
        Speaker: Dr Ivonne Zavala (Swansea University)
      • 11:35
        Open Effective Field Theories from Integrating Out High Momenta from Inelastic Reactions (15' + 5') 20m
        Effective field theories have often been applied to systems with inelastic reactions that produce particles with large momenta outside the domain of validity of the effective theory. The effects of the inelastic reactions have been taken into account in previous work by adding local anti-Hermitian terms to the effective Hamiltonian density. Here we show that an additional modification is required in equations governing the density matrix when multi-particle states are considered. We define an effective density matrix by tracing out states containing high-momentum particles, and show that it satisfies a Lindblad equation, with Lindblad operators determined by the anti-Hermitian terms in the effective Hamiltonian density.
        Speaker: Eric Braaten (Ohio State University)
      • 11:55
        Correspondence between Solutions of Scattering Equations and Scattering Amplitudes in Four Dimensions (15' + 5') 20m
        We study in detail the explicit correspondence between solutions of the scattering equations and scattering amplitudes in four dimensions. We have established an interesting pattern in the solutions of the scattering equations. In particular, the MHV Yang-Mills amplitude, calculated from the CHY formalism, has support on only one particular well-behaved solution. For NMHV amplitudes and beyond, each of them can be obtained from an exclusive set of solutions, which do not intersect with others. Thus each solution corresponds to a basis amplitude, from which all the amplitudes can be constructed. We also attempt to give a geometric characterization of the sectors of solutions of the scattering equations.
        Speakers: Prof. Yijian Du (Deparment of Physics, Wuhan University), Prof. Yong-Shi Wu (University of Utah and Fudan University)
      • 12:15
        Towards regularized higher-order computations in QFT without DREG (15' + 5') 20m
        In this talk, we review the basis of the loop-tree duality theorem, which allows to rewrite loop level amplitudes in terms of tree-level like structures. Since the loop measure is converted into a phase-space one, both virtual and real contributions are expressible using the same integration variables. A physically motivated momentum mapping allows to generate the real emission process starting from the Born kinematics and the loop momenta. The integrand-level combination leads to regular functions, which can be integrated without using dimensional regularization (DREG) and correctly reproduce the finite higher-order corrections to physical observables. We explain the implementation of this novel approach to compute some physical processes, and we show how to deal with both IR and UV divergences without using DREG.
        Speaker: German Sborlini (IFIC-Valencia)
    • 11:15 13:00
      Neutrino Physics: interaction, x-section+astrophysics/cosmology Chicago 6

      Chicago 6

      Convener: Yvonne Wong (The University of New South Wales)
      • 11:15
        Neutrino Interaction Cross Section Measurements at T2K (15' + 2') 17m
        The T2K long-baseline neutrino oscillation experiment is well known for its contributions to our understanding of the neutrino oscillation parameters, but its contribution to the world's knowledge of neutrino interaction cross sections is also significant and growing quickly. The two near detectors in particular, INGRID and ND280, are ideal for contributing to this knowledge. This talk presents an overview of the T2K neutrino cross sections, focusing on the latest results.
        Speaker: Neil McCauley (Liverpool University)
      • 11:32
        COHERENT at the Spallation Neutron Source (15' + 2') 17m
        The COHERENT collaboration's primary objective is to measure coherent elastic neutrino-nucleus scattering (CEvNS) using the unique, high-quality source of tens-of-MeV neutrinos provided by the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). COHERENT will deploy multiple detector technologies in a phased approach and will test the $N^2$ dependence of the cross section. Following an extensive background measurement campaign, a location in the SNS basement has proven to be neutron-quiet and suitable for deployment of the COHERENT detector suite. This talk will describe COHERENT physics motivation, status and plans.
        Speaker: Robert Cooper (Fermi National Accelerator Laboratory)
      • 11:49
        Precision Measurements with Tritium End Point Experiments (18' + 2') 20m
        Merged abstract
        Speaker: Chris Tully (Princeton University (US))
      • 12:09
        Search for dark matter neutrino interaction with IceCube cosmic neutrinos (15' + 2') 17m
        IceCube has been observing cosmic neutrinos continuously since their discovery. The origin of these cosmic neutrinos is still unknown and their distribution is compatible with an isotropic diffuse flux. Dedicated studies show that a large fraction of the observed high energy neutrinos originate somewhere outside our galaxy. Regardless of the extragalactic source, the neutrino flux and distribution would be influenced if they interact with dark matter during their propagation. We perform a likelihood analysis of neutrino energy, flavor, and arrival direction of observed high energy events to investigate the strength of dark matter interaction with high energy neutrinos during propagation and confront our results with IceCube’s most recent data.
        Speaker: Ali Kheirandish (University of Wisconsin and WIPAC)
      • 12:26
        Probing neutrino decay with ultra high energy neutrinos (15' + 2') 17m
        The IceCube experiment at the South Pole has been observing ultra high energy neutrinos in the TeV-PeV range and beyond. At such high energies, these neutrinos allow new physics searches, which can be complementary to searches at collider experiments. In this work, we discuss an analysis of IceCube data in the context of neutrino decay. We use the first three years of data from IceCube to probe neutrino decay. We consider a distribution of diffuse ultra high energy neutrinos from active galactic nuclei (AGNs), based on a standard astrophysical model. We consider flavour mixing of these neutrinos through the usual oscillations as well as because of neutrino decay. For neutrinos from the Northern sky, the flux attenuation and energy shift due to interactions with earth matter is significant at the energies under consideration. We take these effects into account in our analysis. Finally, we compare the theoretically expected events with experimental data, to put bounds on the neutrino decay lifetime. We show our results for specific source flavour ratios of astrophysical neutrinos, and for a number of possible decay scenarios. Our analysis allows us to put a model-independent bound on the decay lifetime. The results are also shown as a function of the flavour ratios of neutrinos, to show how departure from standard physics scenarios can manifest themselves in the data.
        Speaker: Dr Sushant Raut (KTH Royal Institute of Technology)
      • 12:43
        Leptogenesis: Improving predictions for experimental searches (15' + 2') 17m
        Right handed neutrinos could not only explain the observed neutrino masses via the seesaw mechanism, but also generate the baryon asymmetry of the universe due to their CP-violating interactions in the early universe. If their Majorana masses are at the TeV scale or smaller, these particles can be found at the LHC or future colliders, including SHiP, FCC or CEPC. In addition, the relevant source of CP-violation may be experimentally accessible, and they can mediate observable neutrino double beta decay. In these low scale leptogenesis scenarios, the matter-antimatter asymmetry is generated at temperatures when the heavy neutrinos are relativistic. In this regime, thermal corrections to the transport equations in the early universe are large. We review recent progress in a systematic treatment in the framework of nonequilibrium quantum field theory that allows to make reliable theoretical predictions for the properties of the heavy neutrinos.
        Speaker: Marco Drewes (Technische Universitaet Muenchen (DE))
    • 11:15 13:00
      Strong Interactions and Hadron Physics: Minbias and theory Ontario

      Ontario

      Convener: Prof. Abdel Nasser Tawfik (Egyptian Center for Theoretical Physics (ECTP) and World Laboratory for Cosmology And Particle Physics (WLCAPP))
      • 11:15
        Scaling behaviour of the $p_{T}$ spectra for identified hadrons in $pp$ collisions (15' + 5') 20m
        We extend the scaling behaviour observed in the inclusive charged hadron transverse momentum ($p_{T}$) distributions to the $p_{T}$ spectra of pions, kaons and protons produced in proton-proton ($pp$) collisions with center of mass energies ($\sqrt{s}$ ) at 0.9, 2.76 and 7 TeV. This scaling behaviour arises when a linear transformation, $p_{T} \rightarrow p_{T}/K$, is applied on the pion, kaon or proton $p_{T}$ spectra. The scaling parameter $K$ depends on $\sqrt{s}$ and is determined by a new method, the quality factor method, which does not rely on the shape of the scaling function. We argue that the pions, kaons and protons originate from different distributions of clusters which are formed by strings overlapping, and the scaling behaviours of these identified particles $p_{T}$ spectra could be understood with the colour string percolation model in a quantitative way simultaneously.
        Speaker: Wenchao Zhang (Shaanxi Normal University)
      • 11:35
        Two component model for hadroproduction in high energy collisions (15' + 5') 20m
        Overview of the two component model for hadroproduction based on the recently published papers is presented. The transverse momentum spectra, $d^2\sigma/(d\eta dp_T^2)$, of hadrons produced in high energy collisions can be decomposed into the two components: the exponential ("thermal") and the power ("hard") ones. Thus, charged hadron spectra produced in various interactions (pp, $\gamma$p, $\gamma \gamma$, heavy-ion collisions) and measured in different experiments from ISR to LHC are considered simultaneously within this model. As a result, it is shown that this model provides a much better description of the available experimental data than other widely used parameterizations (eg. Tsallis). Moreover, the relative contributions of the exponential and power-law components to the spectra vary with the type of the collisions, the type of the produced hadron, the charged multiplicity and the measured pseudorapididty region. The possible mechanism of this effect is discussed: w hile the thermal component might be produced in the fragmentation of the color string due to the effective event horizon introduced by confinement, the power-law term resembles the Regge theory with the perturbative QCD pomeron. Finally, pseudorapidity of a secondary hadron in the moving proton rest frame is shown to be a universal parameter describing a shape of the spectra in pp-collisions. The observed dependences are used to make predictions on the mean transverse momenta $< p_T >$, pseudorapidity distributions $d\sigma/d\eta$ and double-differential cross-sections $d^2\sigma/d\eta dp_T^2$ at LHC-energies, which are tested on already available experimental data and predictions for future LHC measurements are presented.
        Speaker: Aleksandr Bylinkin (Moscow Institute of Physics and Technology (MIPT), Moscow, Russia)
      • 11:55
        Total, elastic and inelastic pp cross sections at the LHC (15' + 5') 20m
        Merged abstract
        Speaker: Tomas Sykora (Charles University (CZ))
      • 12:15
        Minimum bias measurements at the LHC (20' + 5') 25m
        Merged abstract
        Speaker: Deepak Kar (University of the Witwatersrand (ZA))
      • 12:40
        Strange quarks in the nucleon from lattice QCD (15' + 5') 20m
        Since strange quark contributions to nucleon observables must arise entirely through interactions with the vacuum, their sign and magnitude provide key information regarding the nonperturbative structure of the nucleon. For this reason there have been extensive experimental and theory efforts directed at measuring such quantities over the last decade. I will discuss the significant progress made in precise quantitative determinations of strange nucleon properties through numerical simulations of QCD on a discrete space-time lattice. This work is important in the context of physics issues as diverse as the experimental detection of dark matter particles, precision tests of the Standard Model, and determining the distribution of the proton's spin among its constituents. I will focus in particular on recent lattice QCD results which have set new benchmarks for studies of strange electromagnetic form factors in parity-violating electron scattering experiments and on results for the strange nucleon sigma terms leading to new levels of precision in the interpretation of dark matter searches.
        Speaker: Phiala Shanahan (Massachusetts Institute of Technology)
    • 11:15 13:00
      Technology Applications and Industrial Opportunities: 2 Chicago 10

      Chicago 10

      • 11:15
        Scientific contribution and Industrial applications of Photon detectors on Hamamatsu Photonics (25' + 5') 30m
        Hamamatsu Photonics has been seeking to acquire new “knowledge” by searching out the true nature of light and aiming to create/establish new industry. Our products are actively used for academic and scientific research projects constantly underway to discover the “truth of nature”, and through out the world in a wide variety of applications including medical treatment, chemical analysis, measurement, information & communication, and office automation. The report will provide an overview of the photon sensing technology contributing to both basic science abd industrial applications, based on our experiences, as well as the future prospects.
        Speaker: Koei Yamamoto (Hamamatsu Photonics K.K)
      • 11:45
        Superconducting RF cavity system production for particle accelerators in scientific and industrial applications (20' + 5') 25m
        As worldwide leading supplier of accelerator components and systems for scientific application, RI Research Instruments scope reaches from built to print manufacturing to delivery of turn-key accelerator systems according to functional specification. Close collaboration with customer responsible technical staff is key for the successful completion of projects such as the delivery of 420 superconducting RF cavities for the European XFEL project. For delivery of complex turn-key superconducting accelerator modules technology transfer agreements with leading laboratories are concluded to benefit from the thorough R&D work of such laboratories ensuring an economic and high quality manufacturing of such accelerator modules for our customers.
        Speaker: Michael Pekeler (RI Research Instruments GmbH)
      • 12:10
        Spinning off from high energy physics: Applications of particle tracking detectors and methods in industry and society (20' + 5') 25m

        The technology, methods and data processing algorithms developed for experiments in high energy physics are often considered by public opinion as being far from real-life applicability. Actually many particular technologies can find their applications outside of HEP presenting significant commercialization potential. This contribution is focused on applications of digital particle counting and tracking detectors and measurement methods enabled by them. The detectors were developed by the CERN-based Medipix collaborations, implementing know-how from HEP but adapting it also for applications beyond fundamental research.

        The commercialization of such advanced technology faces significant challenges since a real market outside science does not yet exist. The potential commercial users are not informed about the availability of these technologies and their capabilities. On the other hand scientists are not fully knowledgable about the real challenges and needs in industry. For instance, some modern composite materials require novel inspection techniques, which are not available with existing technologies. The same is true for modern medical therapeutic and diagnostic methods. High performance imaging instrumentation based on particle tracking detectors allows, in many cases, to bring accelerator based techniques to common laboratories or even construct a portable solution.

        Several examples of commercial applicability of such instrumentation in the field of radiation imaging in industry, medicine and other fields will be described. They include advanced spectroscopic imaging methods (mostly with X-rays: imaging based on absorption, scattering or phase effects) for non-destructive testing and analytical imaging as well as applications of particle tracking based imaging.

        Speaker: Jan Jakubek (ADVACAM)
      • 12:35
        Micro-Pattern Gaseous Detectors and potential applications beyond Fundamental Physics (20' + 5') 25m

        Micro-Pattern Gaseous Detectors (MPGDs) are devices often used for charge particle tracking, as exemplified at the LHC experiments. These devices were introduced to improve the position resolution, the capability to cope with high particle flux, and the long term stability compared to the Multi-Wire Proportional Chambers. In recent years, MPGDs found applications beyond high energy physics mainly due to their imaging capabilities and the advantageous size over price ratio. Some examples that do not exhaust the list of applications are:

        • The developments to obtain a radiation-hard detector based on Gaseous Electron Multipliers (GEMs) for imaging and dosimetry during gamma-ray treatments.

        • GEMs have been used for X-ray fluorescence of artworks in order to unveil underlying paintings over large surfaces.

        • A portable and battery-driven muon telescope based on Micro-Mesh Gaseous Structures (Micromegas) is used for cosmic muon tomography, presently scanning the Egyptian Pyramids.

        The goal of all MPGDs is to amplify the otherwise small amount of ionisation charge produced in the gas by the interacting particles. Typically, this charge is read out electronically with an amplification and digitisation chain dedicated to each channel. An alternative is to exploit the copious scintillation of certain gases. The first ideas of taking pictures of scintillating gases go back to the beginning of the '80, and recently its potential was re-discovered. Modern MPGDs coupled to modern cameras are versatile and intuitive tools to deliver fast and good quality images. The robustness and the simplicity of this readout technique are key features which may simplify the spread of MPGDs beyond high energy physics environment. Applications range from low-energy X-ray radiography and fluoroscopy, position- and energy-resolved X-ray detection, X-ray crystallography over large areas, online beam monitor in hadron therapy treatments, and possibly several others.

        Speaker: Filippo Resnati (CERN)
    • 13:00 14:00
      1' Minute Elevator Speeches Rehersals 1h Superior A

      Superior A

      Speakers: Lauren Alexandra Tompkins (Stanford University (US)), Sarah Marie Demers Konezny (Yale University (US))
    • 13:00 14:30
      DOE - PI Meetings: Detector R&D Chicago 8

      Chicago 8

    • 13:00 14:00
      ICFA Neutrino Panel 1h Superior B

      Superior B

    • 13:00 14:00
      Lunch 1h
    • 14:00 15:45
      Beyond the Standard Model: 9 Chicago 7

      Chicago 7

      Conveners: Bruce Mellado Garcia (University of the Witwatersrand), Seema Sharma (Indian Institute of Science Education and Research (IN))
      • 14:00
        Discovery potential of a high-luminosity Z, W, Higgs and top factory (15' + 5') 20m
        The design study of the Future Circular Colliders at CERN comprises a high-luminosity e+e- storage ring collider (FCC-ee), leading to the observation of 1012/13Z decays, a million tagged Higgs decays at the ZH threshold, and over a million tops around the top-quark pair threshold. Physics beyond the Standard Model can manifest itself by significant deviations in the precision electroweak measurements, by the observation of flavour changing neutral currents or lepton-flavour-violating decays, by the precise measurements of the Z and H invisible decay widths, or by direct observation of particles with extremely weak couplings, such as right-handed neutrinos and other long-lived particles.
        Speaker: JiJi Fan (Brown University)
      • 14:20
        Search for new resonances coupling to third generation quarks in pp collisions at 13 TeV at CMS (15' + 5') 20m

        We present a search for new massive particles decaying to heavy-flavour quarks with the CMS detector at the LHC. Decay channels to vector-like top partner quarks, such as T', are also considered. This results in a top-pair-like final state, as the T' decays to a W boson and bottom quark; however the reconstructed mass of the T' can be used to further signal discrimination. We use proton-proton collision data recorded at a centre-of-mass energy of 13 TeV. The search is performed in both hadronic and semileptonic decay channels of the top quark or of the top-partners. Due to the high momentum range in which these objects are produced, specific reconstruction algorithm and selections are employed to address the identification of these boosted signatures.The results are presented in terms of upper limits on the model cross section.

        Speaker: Michael Anthony Buttignol (Institut Pluridisciplinaire Hubert Curien (FR))
      • 14:40
        Search for new resonances coupling to third generation quarks in pp collisions at 13 TeV at ATLAS (15' + 5') 20m

        A search for new resonances that decay into top quark pairs and new
        resonances that decay into a top quark and a b quark are reported. The
        search is performed with the ATLAS experiment at the LHC using
        proton-proton collision data collected at a centre-of-mass energy of
        $\sqrt{s}=13$ TeV. Both the lepton plus jets channel in the top pair
        search and the all hadronic channel are explored in both searches. In the
        top pair search, the invariant mass spectrum of top quark pairs is examined
        for local excesses or deficits that are inconsistent with the Standard
        Model prediction. In the top-bottom search, the invariant mass spectrum of
        the $tb$ final state is reconstructed and compared to the Standard Model
        prediction.

        Speaker: Danilo Enoque Ferreira De Lima (Ruprecht-Karls-Universitaet Heidelberg (DE))
      • 15:00
        Search for new physics in multi lepton final states with ATLAS and CMS (15' + 5') 20m

        Many models of physics beyond the standard model predict events that
        contain two or more leptons with or without extra jets, missing energy,
        accompanying b-quarks, etc. This talk highlights ATLAS searches targeting
        new heavy neutrinos and leptons and multicharge Higgs-like particles in
        multilepton final states with the first LHC Run2 Data.

        Speaker: Christos Leonidopoulos (University of Edinburgh (GB))
      • 15:20
        Search for leptoquarks and compositeness at CMS (15' + 5') 20m

        Fermion compositeness would give rise to excited states of quarks and leptons. Such states would radiatively decay to standard-model fermions. This talk present searches for such decays, focusing on the recent results obtained using data collected at Run-II of the LHC.

        Speaker: Seth Cooper (University of Alabama (US))
    • 14:00 15:45
      Dark Matter Detection: 5 Chicago 10

      Chicago 10

      Convener: Prisca Cushman
      • 14:00
        Direct dark matter search with the CRESST experiment (20' + 5') 25m
        The quest for the particle nature of Dark Matter is one of the big open questions of modern physics. A well motivated candidate for Dark Matter is the so-called WIMP - a weakly interactive massive particle. Recently several theoretically well-motivated models with Dark Matter candidates in a mass region below the  WIMP mass-scale gained also a lot of interest,theoretically and experimentally.  The CRESST II experiment located at the Gran Sasso laboratory in Italy is optimised for the detection of the elastic scattering of these low mass Dark Matter particles with ordinary matter. We show the results obtained with an improved detector setup with increased radio purity and enhanced background rejection. In addition we present the result obtained with a dedicated low-threshold analysis of a single detector module. The limit obtained is the most stringent limit obtained for direct Dark Matter experiments in the mass region below 1.8 GeV/c$^{2}$. We will discuss the expected performance for new small CRESST-type detectors to be used during the next data taking phase. We conclude with an outlook of the future potential for direct Dark Matter detection using further improved CRESST CaWO$_{4}$ cryogenic detectors.
        Speaker: Jochen Schieck (Austrian Academy of Sciences (AT))
      • 14:25
        Recent Results from SuperCDMS Soudan (20' + 5') 25m
        The CDMS and SuperCDMS experiments have completed operations at the Soudan Mine after more than a decade at the forefront of the search for dark matter. The most recent results from SuperCDMS Soudan will be presented. These include world's-best limits on the existence of low-mass WIMP dark matter. These limits anticipate future low-mass sensitivity improvements with SuperCDMS SNOLAB.
        Speaker: Alan Robinson (Fermilab)
      • 14:50
        The Latest from XENON (20' + 5') 25m
        XENON1T, the latest phase of the XENON program, consists of a 1 m dual phase xenon TPC containing a 1 ton fiducial target. Using this largest liquid xenon detector built to date, combined with an unprecedentedly low background, the most sensitive dark matter search will be conducted, pushing the sensitivity to the coherent WIMP-nucleon cross section down to $1.6 \times 10^{-47}~cm^2$ for a 50 GeV/c$^2$ WIMP. This leap forward in sensitivity will probe deeply into the phase space favored by SUSY models for dark matter and poses a high discovery potential. With the construction of the experiment completed, the status of the experiment will be given focusing on the unique features of the detector, the potential physics reach, and the results of the first data.
        Speaker: Prof. Ethan Brown (XENON Collaboration)
      • 15:15
        The Present and Future of Searching for Dark Matter with LUX and LZ (20' + 5') 25m
        The LUX collaboration has recently re-analyzed its initial 90 live-day WIMP search data. The new results advance the search for dark matter candidate particles in the 4 GeV/c^2 and higher mass range, with a maximal spin-independent sensitivity of 6 x 10^-46 cm^2 cross-section for a mass of 33 GeV/c^2 now established. LUX has performed multiple advanced *in situ* neutron and beta/gamma calibrations of the light (charge) yields down to 1.1 (0.7) keV in nuclear recoil energy and 1.3 (0.2) keV in electron recoil energy, thereby bypassing the past practices of extrapolating the yields from *ex situ* calibrations or simulation models alone. In this talk, the consequences of the new calibrations for the limit on the cross-section of interaction for low-mass WIMPs will be highlighted. Previous hints of WIMP signals from other detectors are now more strongly disfavored, assuming isospin invariance and the standard halo model. Both spin-independent and spin-dependent limits will be discussed, as well as the present status of the LUX 300-live-day run, and the technical design report and future of its 10-ton-scale, next-generation successor LZ, which plans on achieving a sensitivity of better than 3 x 10^-48 cm^2 for a WIMP of 40 GeV/c^2 rest mass.
        Speaker: Prof. Matthew Szydagis (University at Albany, State University of New York)
    • 14:00 15:45
      Detector: R&D and Performance: PID and RICH Chicago 8

      Chicago 8

      Convener: Kenji Inami (Nagoya university)
      • 14:00
        Study on the performance of the Particle Identification Detectors at LHCb after the LHC First Long Shutdown (LS1) (12' + 3') 15m
        During the First Long Shutdown (LS1), the LHCb experiment has introduced major modification in the data-processing procedure and modified part of the detector to deal with the increased luminosity and the increased heavy-hadron production cross-section. In this contribution we review the performance of the particle identification detectors at LHCb, Rich, Calorimeters, and Muon system, after the LS1.
        Speaker: Marianna Fontana (Cagliari)
      • 14:15
        The KAON identification system at the NA62 experiment at CERN (12' + 3') 15m
        The main goal of the NA62 experiment at the CERN SPS accelerator is to measure the branching ratio of the ultra-rare K+ → π+νν ̄ decay with 10% accuracy. This will be achieved by detecting about 100 K+ → π+νν ̄ decays with a ratio signal/background ∼ 10 in 2-3 years of data taking starting in 2015. NA62 uses a 750MHz high-energy un-separated charged hadron beam, with kaons corresponding to ∼ 6% of the beam, and a kaon decay-in-flight technique. Since pions and protons cannot be separated efficiently from kaons at the beam level, the identification of kaons within the high-intensity NA62 beam is mandatory. The time information is also essential to reconstruct the K+ → π+νν ̄ decay and to guarantee the rejection of background induced by accidental overlap of events in the detector. A differential Cherenkov detector (CEDAR) filled with Nitrogen gas, and placed in the incoming beam, is used to perform the fast identification of kaons, before their decays. The CEDAR is insensitive to pions and protons and must provide an efficiency of at least 95% and precise time information with a resolution of at least 100ps. To stand the kaon rate (50MHz average) and to meet the performances required, an upgraded version (CEDAR-KTAG) with new photon detectors, readout, mechanics, cooling and safety systems has been realised for NA62. The fully equipped CEDAR-KTAG detector, its readout and front-end chain have been successfully commissioned during a pilot run at CERN in 2014. The kaon rate results in a ∼ 10MHz rate in the sub-detectors after the 65m long decay region. Hardware lowest-level (L0) triggers are used to reduce the rate from ∼ 10MHz to ∼ 1MHz, still preserving most of the decays of interest. Following a L0 trigger, most sub-detectors, KTAG included, transfer data to dedicated PCs, where two trigger levels (L1 and L2) are applied via software, to reach a final rate of ∼ 10kHz. With the data taking started from June 2015, while the NA62 experiment is finalising the detector and read-out commissioning, the CEDAR-KTAG time resolution and efficiency have been measured to be within the required detector performances. The capability to distinguish between kaons and pions has been validated and the development of L1 trigger algorithms for online kaon identification has been completed.
        Speaker: Karim Massri (University of Liverpool (GB))
      • 14:30
        The Belle II iTOP Detector (12' + 3') 15m
        The Belle II experiment is now being constructed at the KEK laboratory in Japan and represents a substantial upgrade to both the Belle detector and the KEKB accelerator. Belle II will record 50 ab−1 of data, a factor of 40 more than that recorded by the previous generation of B-factory experiments. To provide particle identification in the barrel region, an “imaging-Time-of- Propagation” (iTOP) detector has been constructed. This detector uses Cerenkov light radiated in quartz bars that is totally internally reflected to the end of the bars and subsequently imaged onto an array of finely segmented phototubes that have precise timing. Both position and timing information is used to determine the Cerenkov angle and identify particle species. This talk describes the optical and mechanical design of the detector, its construction and readout, and its expected performance and first test results. We anticipate achieving greater than 4σ separation between pions and kaons over most of the momentum range of interest for B and D meson decays in Belle II.
        Speaker: Alan Schwartz (University of Cincinnati)
      • 14:45
        The LHCb RICH system: current detector performance and status of the upgrade program (12' + 3') 15m
        LHCb is a precision experiment devoted to the study of CP violation and rare decays of b and c quarks, and to the search for new physics beyond the Standard Model at the Large Hadron Collider (LHC) at CERN. The Ring-Imaging Cherenkov (RICH) system is a key component of the LHCb experiment: it consists of two RICH detectors that provide charged particle identification over a wide momentum range (2-100 GeV/c) and angular acceptance (15-300 mrad). The LHCb RICH system has been performing extremely well during Run 1 and is providing the LHCb experiment also in Run 2 with a robust, reliable and precise particle identification system for all hadronic processes. Performance of the RICH detectors measured from data will be presented, with special reference to its dependence on calibration parameters and event multiplicities. The LHCb experiment is preparing for an upgrade during the second LHC long shutdown (2019-2020) in order to fully exploit the LHC flavor physics potential. A five-fold increase in instantaneous luminosity is foreseen reaching 2$\times$10$^{33}$ cm$^{-2}$ s$^{-1}$. In order to reach the planned 40 MHz continuous data taking, a substantial change in the LHCb trigger and read-out schemes will be implemented. The RICH detectors will require new photo-detectors, electronics and slightly modified optics. Tests of the complete photo-electronic chain have been performed in dedicated test beams in 2014-15. The status and perspectives of RICH upgrade program will be presented.
        Speaker: Massimiliano Fiorini (Universita di Ferrara & INFN (IT))
      • 15:00
        PERFORMANCES OF THE NA62 RICH DETECTOR (12' + 3') 15m
        NA62 is the lastest generation kaon experiment at CERN. Its main goal is the measurement of the $K^+ \rightarrow \pi^+ \nu \overline\nu$ branching ratio with $10\$% accuracy. The key element of the PID in NA62 is the Ring Imaging CHerenkov detector (RICH). The RICH detector is required to identify $\pi$ and $\mu$ in the momentum range between 15 and 35 GeV/c with a $\mu$ rejection factor better than $1\%$; it is also required to measure the $\pi$ arrival time with precision better than 100 ps and the Cherenkov angle with resolution better than 80 $\mu$rad. The detector consists of a 17.5 m long cylindrical vessel with a diameter varying from 3.4 to 4 m filled with neon at atmospheric pressure and room temperature. The RICH vessel was installed at CERN in February 2014 and a full vacuum test was done in March 2014. Two semispherical mirrors with 17 m focal length placed at the downstream end of the vessel reflect the Cherenkov photons. Since the area covered by the mirrors is large (around 3 m diameter) a mosaic of 20 hexagonal segments is used. The reflected light is collected by around 2000 photomultiplier tubes (PMTs) with 18 mm pixel size and suitable quantum efficiency and timing performances. The PMTs are assembled in a compact hexagonal packing into two aluminium disks placed at the entrance window. Winston cones carved into the disks and covered with aluminized mylar are used to convey the light onto the active PMT area, thus increasing light collection by up to $20\%$. Quartz windows are used to separate the PMTs from the neon. The mirror segments are individually hanged on a light aluminium honeycomb structure and moved by means of two piezo-motors each, in order to align the light toward the two PMTs disks. The mirrors installation and alignment was completed in August 2014. From the data collected during a pilot run in 2014 and during the first physics run in 2015 the performances of the RICH have been studied in detail. From the 2014 data a time resolution better than 100 ps has been measured for particles with momentum between 15 and 35 GeV/c, fully matching the experiment request. In the same momentum range the $\pi$-$\mu$ separation has been studied, measuring a $\mu$ rejection of a factor 50 at $\pi$ identification efficiency of 80%. During the 2015 run we used the collected data to align the RICH mirrors. At the ICHEP conference we will present new results obtained with the aligned mirrors and improved analysis tools.
        Speaker: Francesca Bucci (Universita e INFN, Firenze (IT))
      • 15:15
        R&D of a compact DIRC detector for use in an EIC (12' + 3') 15m
        The proposed Electron-Ion Collider will explore the physical regime of the most fundamental particles, quarks and gluons, and their interactions, which create 95% of the mass of the visible matter in the universe. To analyse these collisions a sophisticated particle id system must be built. The Detection of Internally Reflected Chereknov light (DIRC) technology is an attractive and radially compact solution for charged particle identification at an EIC in the barrel region not accessible by traditional RICH detectors. I will describe the status of the design and R&D for the High Resolution DIRC envisioned for an EIC detector. The current design of High Resolution DIRC at EIC will use a new, innovative compound lens to reach remarkable resolution sufficient to extend the momentum coverage well beyond state-of-the-art, up to 6 GeV/c. Performance of a prototype of the compound lens was tested on test benches and in particle beam at CERN, and results will be presented.
        Speaker: Lee Allison (Old Dominion University)
      • 15:30
        An Ar-gas ionization chamber for alpha particle detection at the Yangyang underground laboratory (12' + 3') 15m
        An ionization chamber from XIA co. for detecting alpha particles has been installed in the Yangyang underground laboratory. The alpha detector is served to assay detector materials for the KIMS-NaI dark matter experiment and the AMoRE double beta decay experiment. This instrument describes characteristic signals from ionization electrons produced by material's alpha particles in an Ar-filled gas chamber. The distinct rise time from the signal is used to select alpha particles that originate from the specimen tray and veto those from other sources. The chamber can reach a sensitivity as low as 0.0001 count/cm^2/hr. In this presentation, measurement results with copper plates, lead bars, and reflective sheets are reported.
        Speaker: Chang Hyon Ha (IBS)
    • 14:00 15:45
      Education and Outreach: 2 Huron

      Huron

      Conveners: Azwinndini Muronga, Kate Shaw (INFN Gruppo Collegato di Udine and ICTP Trieste)
      • 14:00
        Doing outreach with the first direct observation of gravitational waves (12' + 3') 15m
        On February 11 2016, the LIGO Scientific Collaboration and the Virgo Collaboration announced the observation of gravitational waves from a binary black hole merger. The transient signal GW150914 had been recorded five months earlier by the two Advanced LIGO detectors which had just started their first observation run, after a few years of upgrade. Parallel to the data analysis which led to the conclusion that the observed signal was indeed of astrophysical origin, the two collaborations invested a lot of effort to prepare the discovery announcement. In this talk, we review the main aspects of the outreach strategy developed for this event and try to quantify its impact on the various targeted audiences: the general audience, the media and the educational community.
        Speaker: Nicolas Arnaud (LAL (CNRS-IN2P3))
      • 14:15
        The LHCb Starterkit: HEP software training for the 21st century (12' + 3') 15m
        The vast majority of high-energy physicists use and produce software every day. Software skills are usually acquired “on the go”, dedicated training courses are rare. The LHCb Starterkit is a new training format for getting LHCb collaborators started in effectively using software to perform their research. The course focusses on teaching basic lab skills for research computing. Unlike traditional tutorials we focus on starting with basics, performing all the material live, with a high degree of interactivity, and focussing on teaching understanding of the tools as opposed to handing out recipes that work “as if by magic”. The course is strongly inspired by the principles of Software Carpentry (http://software-carpentry.org). The LHCb Starterkit was started by two young members of the collaboration, the material is created in a collaborative fashion using the tools we teach, and is taught almost exclusively by PhD students to other PhD students.
        Speaker: Lennaert Bel (Nikhef National institute for subatomic physics (NL))
      • 14:30
        HEP data for everyone: CERN open data and the ATLAS and CMS experiments 15m

        A cornerstone of good scientific practice is to make results available to the public. This is especially true for experiments at the LHC at CERN where public investment in fundamental research is significant and long-standing. As part of their commitment to open access and public engagement the ATLAS and CMS collaborations have made several large datasets available to the public.

        There are many challenges posed in presenting complex and high-level data to the public in an accessible and meaningful way. We describe the solutions to these challenges, part of which is the creation and use of the CERN Open Data Portal and the content found therein. Furthermore we describe the impact and future plans of the ATLAS and CMS open access efforts including future releases of data and accompanying educational material.

        Speaker: Thomas Mc Cauley (University of Notre Dame (US))
      • 14:45
        Education and Outreach at the Pierre Auger Observatory (12' + 3') 15m
        The scale and scope of the physics studied at the Pierre Auger Observatory continue to offer significant opportunities for original outreach work. Education, outreach and public relations of the Auger Collaboration are coordinated in a dedicated task whose goals are to encourage and support a wide range of efforts that link schools and the public with the Auger scientists and the science of cosmic rays, particle physics, and associated technologies. We focus on the impact of the Collaboration in Mendoza Province, Argentina and beyond. The Auger Visitor Center in Malargüe has hosted over 95,000 visitors since 2001, and a fifth Collaboration-sponsored science fair was held on the Observatory campus in November 2014. The Rural Schools Program, which is run by Observatory staff and which brings cosmic-ray science and infrastructure improvements to remote schools, continues to broaden its reach. Numerous online resources, video documentaries, and animations of extensive air showers have been created for wide public release. Increasingly, collaborators draw on these resources to develop Auger related displays and outreach events at their institutions and in public settings to disseminate the science and successes of the Observatory worldwide. We also highlight education and outreach activities associated with the planned upgrade of the Observatory’s detector systems and future physics goals.
        Speaker: Gregory Snow (University of Nebraska (US))
      • 15:00
        Particle Physics for Primary Schools – enthusing future Physicists (12' + 3') 15m
        In recent times the realisation that children make decisions and choices about subjects they like during their primary school years became widely understood. For this reason academic establishments focus many of their outreach activities towards the younger ages. During the last academic year we designed and trialled a particle physics workshop for primary schools. The workshop allows young children (ages 8-11) to learn the world of particles, use creative design to make particle models and engage in creative writing to describe how particles interact with each other. The workshop has been trialled in many local primary schools, receiving positive evaluation. The resources were improved and completed, based on the feedback given by the primary school teachers.
        Speaker: Cristina Lazzeroni (University of Birmingham (GB))
      • 15:15
        Arts in HEP at Fermilab and CERN (12' + 3') 15m

        Fermilab Artist-in-Resident Lindsay Olson and Art@CERN director Monica Bello will discuss how the arts can enrich outreach for High Energy Physics. Using visual arts, dance, music and sound installations, the arts create an exciting and beautiful platform to educate people in ways words alone cannot. Hear about how successful arts/science collaborations make a difference in informing the public about particle physics research.

        Speakers: Julie Haffner (CERN), Lindsay Olson (Fermilab)
      • 15:30
        Education & Outreach Programs at KEK (12' + 3') 15m
        KEK has been active on many ways in education and outreaches. We have educational programs such as science camps for graduate and high school students, delivery lectures to junior/senior high schools all over Japan and hands-on experiences for all students including international detector school like EDIT2013. We also organise science cafe, photo exhibition, concert and lectures for general public. We would like to introduce these programs and the impacts and discuss the improvements how to make physics, especially high energy physics, more popular in Japan.
        Speaker: Shota Takahashi (KEK)
    • 14:00 15:45
      Heavy Ions: Jets and Heavy Flavor Physics Superior B

      Superior B

      Convener: Anna Stasto (Pennsylvania State University (US))
      • 14:00
        Exploring jet sub-structure in Pb-Pb and pp collisions with jet shapes in ALICE. (15' + 5') 20m
        The heavy-ion physics program at the LHC aims at characterizing the high energy density, high temperature, deconfined partonic state of matter called Quark-Gluon Plasma. Hard probes are very useful tools to study the QGP properties since they are abundantly produced at the LHC energy regime, via hard scattering processes, and they experience the full evolution of the system, losing energy while passing through it. Eventually, these processes might also modify the parton fragmentation with respect to the vacuum case. Jets measurements in Pb-Pb collisions allow to study how the energy is lost by the partons that traverse the medium and redistributed to other particles of the medium. The characterization of the jet substructure can bring insight on possible modifications induced by the medium. These modifications can be studied using a set of jet shapes like the first order radial momentum, the jet momentum dispersion, the difference between the leading and sub-leading jet tracks and others. The measurement of these observables in pp collisions is important as QCD test to be compared with theoretical calculations and Monte Carlo generators. Increasing the jet resolutions can also be important to study the influence of the underlying events on the shapes distributions. The measurement have been also carried out in ALICE in Pb-Pb collisions for jet resolution R=0.2, in order to investigate possible modifications of the jet core, using new techniques for background subtraction and a 2D unfolding procedure to correct the shapes to particles level.
        Speaker: Davide Caffarri (CERN)
      • 14:20
        Towards the Understanding of Jet Substructures and Cross Sections in Heavy Ion Collisions Using Soft-Collinear Effective Theory (15' + 5') 20m
        The jet quenching phenomena in heavy ion collisions provide a strong evidence of the modification of parton shower in the quark-gluon plasma (QGP). Jet substructure observables can probe various aspects of the jet formation mechanism. They contain useful information about the QGP and allow us to study the medium properties in great details. Here we present theoretical calculations of jet shapes, jet fragmentation functions and jet cross sections in proton-proton, proton-lead and lead-lead collisions at the LHC using soft-collinear effective theory, with Glauber gluon interactions in the medium. We find that resumming large logarithms in the jet substructure calculation is necessary for precise theoretical predictions. The resummation is performed using renormalization group evolution between characteristic jet scales. We also find that the medium induces power corrections to jet shapes and jet fragmentation functions due to the Landau-Pomeranchuk-Migdal effect. In the end we present the comparison between our calculations with the recent measurements at the LHC with very good agreement. Our calculations help initiate precise jet modification studies in heavy ion collisions.
        Speaker: Dr Yang-Ting Chien (Los Alamos National Laboratory)
      • 14:40
        Recent results on reconstructed jets from PHENIX at RHIC (15' + 5') 20m
        Much of our understanding of the properties of strongly-coupled quark gluon plasma depend on measurements of particle jets from hard-scattering of nucleons in ion-ion▒collisions.▒ Measurements of jet and particle yields as a function of transverse momentum and collision centrality have shown strong path-length-dependent energy loss of partons traversing the medium.▒ Recently, measurements of jets in small systems at RHIC and the LHC have challenged traditional models of parton energy loss.▒To further understand these results, the dependence of jet yields on initial geometry must be explored. This talk will present measurements of fully-reconstructed jets in p+Au, d+Au, He3+Au, and Cu+Au collisions using the PHENIX detector at RHIC.
        Speaker: Nathan Grau (PHENIX)
      • 15:00
        Jets and High-$p_{T}$ Probes Measured in the STAR Experiment (15' + 5') 20m
        Hard probes created through large momentum transfers are used to study the properties of QCD matter created in heavy-ion collisions, by comparing the measurements to those in p+p collisions. Jets, and the "quenching" or suppression of jets in the medium created in heavy-ion collisions, are studied through various observables. We present the recent measurements from $\sqrt{s_{NN}}$ = 200 GeV in Au+Au collisions, with p+p collisions as the reference, by the STAR Collaboration. The observables include inclusive charged jets, semi-inclusive charged jets, and di-jet transverse momentum imbalance. Additionally, correlation measurements of direct photon+hadron and neutral pion+hadron will be presented and discussed. Comparison of various jet quenching models with the experimental data will also be presented.
        Speaker: Dr NIHAR RANJAN SAHOO (Texas A&M University)
      • 15:20
        Evolution of the jet opening angle distribution in holographic plasma (15' + 5') 20m
        We use holography to analyze the evolution of an ensemble of jets, with an initial probability distribution for their energy and opening angle as in proton-proton (pp) collisions, as they propagate through an expanding cooling droplet of strongly coupled plasma as in heavy ion collisions. We identify two competing effects: (i) each individual jet widens as it propagates; (ii) the opening angle distribution for jets within any specified range of energies is pushed toward smaller angles, comparing final jets to initial jets with the same energies. The second effect arises because small- angle jets suffer less energy loss and because jets with a higher initial energy are less probable in the ensemble. We illustrate both effects in a simple two-parameter model, and find that their consequence in sum is that the opening angle distribution for jets in any range of energies narrows. We find that either effect can dominate in the mean opening angle for not unreasonable values of the parameters. So, the mean opening angle for jets with a given energy can easily shift toward smaller angles, as experimental data may indicate, even while every jet in the ensemble broadens.
        Speaker: Andrey Sadofyev (MIT)
    • 14:00 15:55
      Neutrino Physics: LBL+R&D Chicago 6

      Chicago 6

      Convener: Sowjanya Gollapinni (Wayne State University (US))
      • 14:00
        First measurement using NOvA detectors of neutrino oscillation parameters sin^{2}\theta_{23} and \Delta m^{2}_{32} (18' + 2') 20m

        This talk reports the first measurement using the NOvA detectors of
        $\nu_{\mu}$ disappearance in a $\nu_{\mu}$ beam. Oscillation parameters
        $\Delta m_{32}^{2}$ and $\sin^{2}\theta_{23}$ are measured as function
        of the count and energy spectrum of $\nu_{\mu}$ interactions at a
        Near and Far Detector, separated by a distance of $810\text{ km}$.
        High-statistics Near Detector energy spectra are compared to Monte
        Carlo predictions, and discrepancies used to perform a data-driven,
        bin-by-bin ``Far/Near extrapolation'' correction to the predicted
        Far Detector energy spectrum. The corrected spectrum is fit to data
        in $\Delta m_{32}^{2}$ and $\sin^{2}\theta_{23}$, marginalizing
        over systematic uncertainties and the remaining oscillation parameters
        (excepting $\delta_{CP}$, which is left unconstrained) to produce
        best fit points and $90\%$ confidence level contours. Systematic
        uncertainties considered cover particle simulation, cross-sections,
        detector calibration, and differences in exposure and performance
        between the Far and Near Detectors. This analysis uses a 14 kton-equivalent
        exposure of $2.74\times10^{20}$ protons-on-target from the Fermilab
        NuMI beam. Assuming the normal neutrino mass hierarchy, we measure
        $\Delta m_{32}^{2}=(2.5_{-0.18}^{+0.20})\times10^{-3}\text{ eV}^{2}$
        and $\sin^{2}\theta_{23}$ in the range $0.38-0.65$, both at the
        $68\%$ confidence level, with two statistically-degenerate best fit
        points at $\sin^{2}\theta_{23}=0.43$ and $0.60$. Results for the
        inverted mass hierarchy are also presented.

        Speaker: Keith Matera (Fermi National Accelerator Laboratory)
      • 14:20
        Recent Results of Electron-Neutrino Appearance Measurement at NOvA (13' + 2') 15m

        NOvA is a long-baseline accelerator-based neutrino oscillation experiment that is optimized for NuE measurements. It uses the upgraded NuMI beam from Fermilab and measures electron-neutrino appearance and muon-neutrino disappearance at its Far Detector in Ash River, Minnesota. The NuE appearance analysis at NOvA aims to resolve the neutrino mass hierarchy problem and to constrain the CP-violating phase. The first measurement of electron-neutrino appearance in NOvA based on its first year’s data was produced in 2015, providing solid evidence of NuE oscillation with the NuMI beam line and some hints on mass-hierarchy and  CP. This talk will discuss the second NuE oscillation analysis at NOvA, which is based on 2 years of data.

        Speaker: Jianming Bian (UC Irvine)
      • 14:35
        Recent Results from T2K and Future Prospects (18' + 2') 20m

        Merging the following abstracts:

        The T2K long-baseline neutrino oscillation experiment has been running in anti-neutrino mode since 2014 and recently released anti-neutrino oscillation results. These results have been updated with further data and now include the full three-flavour anti-neutrino oscillation analysis. We will present these new results and compare them with the neutrino oscillation results, giving the most sensitive comparison to date. The three-flavour neutrino and anti-neutrino results are used to obtain world-leading measurements of δCP, θ23 and Δm223.

        The T2K long-baseline neutrino experiment is in the process of proposing a follow-up experiment, T2K2, with higher beam intensity, upgraded detectors and improved sensitivity to neutrino properties. The anticipated sensitivity and reach of T2K2 will be discussed in this talk, as well as possible detector upgrades. In particular, the sensitivity should allow for a 3σ discovery of CP violation in the case of maximum CP violation, after 10 years of data-taking.

        Speaker: Konosuke Iwamoto (University of Rochester)
      • 14:55
        Neutrino oscillation physics sensitivity of Hyper-Kamiokande (18' + 2') 20m
        Hyper-Kamiokande (HK) will be a next generation underground water Cherenkov detector, based on the highly successful Super-Kamiokande (SK) experiment. HK is the logical continuation of the highly successful program of neutrino physics and proton decay searches using a water Cherenkov technique, with an order of magnitude larger mass than predecessor experiments. One of the main goals of HK is the study of neutrino mixing with the highest precision, using the neutrino and anti-neutrino beams produced at J-PARC together with atmospheric neutrinos. Using the high quality neutrino beam produced at J-PARC, with anticipated beam power of 1.3MW, and highly capable near detectors, HK is expected to observe the CP asymmetry in the lepton sector for a large fraction of the parameter space. The sensitivity has been studied with tools and assumptions based on the experience with ongoing T2K and SK experiments. With an exposure of 13 MW $\times$ $10^7$ seconds, the CP violating phase of the Maki-Nakagawa-Sakata matrix $\delta_{CP}$ can be measured to 7 degrees for the best case, and CP violation can be observed with more than 3$\sigma$ (5$\sigma$) significance for 78% (62%) of values of delta. By combining beam and atmospheric neutrino measurements, HK will be able to determine the mass hierarchy with more than 5 $\sigma$ significance. In this talk, studies of the sensitivity to neutrino oscillation parameters, CP violating phase, $\theta_{23}$ octant, and mass hierarchy will be presented.
        Speaker: Michel Gonin (Ecole Polytechnique)
      • 15:15
        Non-accelerator physics with Hyper-Kamiokande (13' + 2') 15m
        While the Standard Model provides an excellent description of low energy particle interactions, the description is nonetheless incomplete and there are well motivated reasons to believe it is only part of a larger theory. Among these is its explicit conservation of baryon number, a quantity whose violation is required to produce the matter dominated universe observed today. This issue is addressed in Grand Unified Theories, for instance, through the introduction of interactions which convert quarks into leptons and thereby allow for baryon number violation in the form of unstable nucleons. Though the experimental signatures of nucleon decay are often tractable and several potential channels exist, a positive signal has never been observed. Indeed, modern searches have yielded limits which begin to probe model predictions, constraining the lifetime to less than $10^{33}$ or $10^{34}$ years depending on the decay mode. Amid these stringent constraints the design of the next-generation water Cherenkov detector Hyper-Kamiokande is being optimized for observation of nucleon decay. Not only is the detector planned to be an order of magnitude larger than predecessor experiments, but its improved photon yield will enable superior signal efficiency and background rejection. As a result it is expected to have more than an order of magnitude better sensitivity to a signal. This presentation will describe the physics potential of Hyper-Kamiokande's nucleon decay search program, including standard decay channels such as $p \rightarrow e^{+}\pi^{0}$ and $p \rightarrow \bar \nu K^{+}$ as well as several others.
        Speaker: Luis Labarga (Departam.de Fisica Teorica)
      • 15:30
        The Deep Underground Neutrino Experiment (DUNE) Physics Program (20' + 5') 25m

        Text coming

        Speaker: Elizabeth Worcester
    • 14:00 17:00
      Poster Session: Setup Riverwalk A/B

      Riverwalk A/B

    • 14:00 15:50
      Quark and Lepton Flavor Physics: 8 Superior A

      Superior A

      Convener: Phillip Urquijo (University of Melbourne (AU))
      • 14:00
        Measurements of electroweak penguin and leptonic $B_{(s)}$ decays at Belle (10' + 5') 15m

        We present the results of measurement of electroweak penguin B decays. We show the full angular analysis of $B \to K^* \ell^+ \ell^-$ to extract form factor insensitive variables such as $P'_5$. The branching fraction of inclusive $b \to s \ell^+ \ell^-$ is measured with a sum-of-exclusive-modes approach. We also report searches for leptonic $B$ decays including the lepton-flavor-violating mode: $B \to e^+e^-$, $\mu^+\mu^-$, $\tau^+\tau^-$, $e^\pm \mu^\mp$. All the analyses are based on the full data set of Belle containing 772 million $B\overline{B}$ pairs.

        A related decay $B_s \to \tau^+\tau^-$ can also be studied by a hadronic $B_s$ tagging tool that is being developed for the data sample of 121${\rm fb}^{-1}$ collected at the $\Upsilon(10860)$ resonance at Belle. The method is based on a hierarchical approach in which the $B_s $ mesons and their daughters are reconstructed in several stages, harnessing more than 100 neural network variables.

        Speaker: Felicitas Breibeck (Austrian Academy of Sciences)
      • 14:15
        B-meson semileptonic rare decay phenomenology from lattice QCD (15' + 5') 20m
        $B$-meson rare decays such as $B \to K(\pi) \ell^+\ell^-$ and $B \to K(\pi) \nu \bar{\nu}$ occur through flavor changing neutral current. They are used to probe new physics signals, because the Standard Model contributions are suppressed. Recent lattice-QCD studies by Fermilab lattice and MILC collaborations improved the accuracy of the form factors which parametrize the hadronic matrix elements in these processes. In this talk, I will present the updated results of Standard Model predictions such as partially-integrated branching fractions and constraints on CKM matrix elements calculated from new form factors. I will also summarize the tensions between Standard-Model predictions and current experimental results of the $B$-meson rare decays.
        Speaker: Mr Ran Zhou (Fermi national accelerator laboratory)
      • 14:35
        Rare decays and angular analyses B->Xmumu (10' + 5') 15m
        The Flavour Changing Neutral Current decays B -> K(*) mu+mu- and B->mu+mu- provide high sensitivity to New Physics contributions. Sensitive observables include the branching fraction, muon forward-backward asymmetry, the fraction of K* longitudinal polarization, We report the recent results from CMS on these decays.
        Speaker: Dayong Wang (Peking University (CN))
      • 14:50
        Search for new physics in rare and semi-rare decays of B-mesons at ATLAS (10' + 5') 15m
        Processes involving the FCNC transitions in b-hadron decays are suppressed in the SM and are sensitive to new physics. New results in the search for the rare decays of Bs and Bd into mu+mu- are presented. They are based on the full sample of data collected by ATLAS at 7 and 8 TeV collision energy. The consistency with the SM and with other available measurements is discussed. The properties of the decay of the Bd meson into K*mu+mu- are also sensitive to the presence of New Physics in loops and has received renewed interest because of possible deviations from the standard model in this decay observed by LHCb. We present recent results obtained by ATLAS, concerning the angular distribution parameters FL, S_i and P’_i in the region Q^2(mu+mu-)<6 GeV^2,
        Speaker: Iskander Ibragimov (Universitaet Siegen (DE))
      • 15:05
        Studies of the rare decays B -> K* l+ l- and B -> K pi pi gamma, and search for B+ -> K+ tau+ tau- with the BABAR detector (10' + 5') 15m
        Flavour changing neutral current processes, such as B -> K(*)l+l- where l = e+, mu+, tau+ are highly suppressed in the Standard Model (SM). These rare decays occur at lowest order via 1-loop diagrams, and contributions from virtual particles in the loop allow one to probe large mass scales at relatively low energies. We present here the most recent results based on the full BABAR data sample, collected at the energy of the Y(4S) resonance, which corresponds to 471 million BBbar pairs. In particular, the decays B -> K* l+l- (both charged and neutral modes) are studied using an angular analysis to extract the quantities A_FB and F_L, which are sensitive to potential effects of physics beyond the Standard Model. Furthermore, the quantity P_2, which is subject to smaller theoretical uncertainties and is more sensitive to non-SM contributions, is extracted. We also present a search for the B+ -> K+ tau+ tau- decay. This search is performed on the recoil of a fully reconstructed B-meson decay from the decay of Y(4S) -> B+B-, by looking for activity compatible with B+ -> K+ tau+ tau- decay and leptonic decays of the two tau’s in the rest of the event. Finally, we report the measurement of the CP asymmetry in the radiative decay B0->Ks0 pi- pi+ gamma, a quantity that is sensitive to possible processes where non-SM photon helicities are involved. The structure of the hadronic final state is studied using the isospin-related decay B+ ->K+ pi- pi+ gamma.
        Speaker: Timothy Gershon (University of Warwick (GB))
      • 15:20
        Search for the rare decay of K$^{0}_{L} \rightarrow \pi^{0}\nu\bar{\nu}$ with the KOTO detector (10' + 5') 15m
        The goal of the J-PARC KOTO experiment is to observe the K$^{0}_{L} \rightarrow \pi^{0}\nu\bar{\nu}$ decay and measure its branching ratio. The prediction for the branching ratio from (SM) processes is 2.4 x 10$^{-11}$ with a theoretical uncertainty of 2.5% [1], and the previous experimental limit is 2.6 x 10$^{-8}$, set by the KEK E391a collaboration [2]. A comparison of experimentally obtained results with SM calculations permits a test of the quark flavor region and a search for physics beyond the SM. In spite of the success of the KEK E391a collaboration, it highlighted the need for further upgrades with the anticipated increase of beam power, and motivated the development of the KOTO detector. A characteristic of the process of interest is a pair of photons from the $\pi^{0}$ decay and no detected particles. KOTO uses a Cesium Iodide (CSI) electromagnetic calorimeter as the main detector to measure the energies and positions of the two photons, and hermetic veto counters to guarantee that there is no extra detectable particle. The first data was collected in spring 2013, and since then we have four additional data runs in 2015 at beam powers of roughly 24 and 39 kW respectively. In this talk, we present a description of the upgrades and improvements to the detector, recent results, and aim to reach the sensitivity of the Grossman-Nir [3] for the larger 2015 data. [1] J. Brod;..et al.: Phys. Rev. D, 83, 034030 (2011) [2] J. Ahn et al., Phys. Rev. D, 81, 072004 (2010) [3] Y. Grossman;..et al.: Adv.Ser.Direct.High Energy Phys.15:755-794,199
        Speaker: Dr Brian Beckford (University of Michigan)
      • 15:35
        Search for K+ to pi+ nu nu at NA62 (10' + 5') 15m
        K+->pi+nunu is one of the theoretically cleanest meson decay where to look for indirect effects of new physics complementary to LHC searches. The NA62 experiment at CERN SPS is designed to measure the branching ratio of this decay with 10% precision. NA62 took data in pilot runs in 2014 and 2015 reaching the final designed beam intensity. The quality of data acquired in view of the final measurement will be presented.
        Speakers: Matthew Moulson, Matthew Moulson (Istituto Nazionale Fisica Nucleare Frascati (IT))
    • 14:00 15:45
      Strong Interactions and Hadron Physics: Theory and other Ontario

      Ontario

      Convener: Marina Nielsen (Universidade de São paulo)
      • 14:00
        Resonances in coupled channel scattering from lattice QCD (15' + 5') 20m
        The excited states in hadron physics are seen as resonances in the scattering of light stable states in QCD, like $\pi$, $K$ and $\eta$ mesons. Many excited states also decay into multiple final states, necessitating coupled-channel analyses. Recently it has become possible to obtain coupled-channel scattering amplitudes using lattice QCD. Using a large diverse basis of operators we are able to obtain a reliable finite volume spectrum describing, for example, the $\pi\eta$, $K\bar{K}$ coupled system. Utilising the finite volume formalism proposed by Luescher and extended by several others, we are able to describe the spectra from each lattice symmetry group and this enables constraints to be derived for S, P and D-wave scattering. In S-wave we find a resonant scattering amplitude containing a pole on an unphysical sheet close to $K\bar{K}$ threshold, with some similarities to the $a_0$(980) seen in experiment. Possible future extensions, and results from related studies such as the $\rho$ resonance at multiple pion masses, and $\pi K$ scattering will also be presented.
        Speaker: Dr David Wilson (for the Hadron Spectrum Collaboration)
      • 14:20
        SU(4) Polyakov linear-sigma model in finite density and magnetic field (15' + 5') 20m
        In analyzing the chiral phase-structure, we utilize mean field approximation for the SU(4) Polyakov linear sigma model (PLSM), in which light, strange and charm quarks are combined. The different chiral condensates and the deconfinement order parameters shall be studied in dependence on temperature, chemical potential and magnetic field. This enables us to investigate the QCD equation of state, and the in-medium modification of open and hidden strange-charm mesons. The results are compared with available lattice simulations and experimental measurements.
        Speaker: Prof. Abdel Nasser Tawfik (Egyptian Center for Theoretical Physics (ECTP), Modern University for Technology and Information (MTI), 11571 Cairo, Egypt)
      • 14:40
        CP violation in three-body $B^{\pm}$ phase space (15' + 5') 20m
        The formation of CP violation (CPV) constrained by CPT invariance is affected by resonances and final state interactions (FSI). Starting from the CPT constraint, we propose a generalized CP asymmetry formula including resonances and FSI. A simple $B$ decay model is elaborated with the $\rho$ and $f_0(980)$ resonances plus a non resonant background including the $\pi\pi \to KK$ scattering amplitude. Performing the fit of the CP asymmetry for the charmless three-body $B^\pm$ decay channel $B^{\pm}\to \pi^{\pm} \pi^+\pi^-$, the formula presents fair agreement with the high statistics LHCb data in the mass region below $1.6$ GeV and we obtain as outcome the $B^{\pm}\to \pi^{\pm} K^+K^-$ for $\pi\pi$ channel asymmetry. Analogously, the CP asymmetry of the $B^\pm\to K^\pm\pi^+\pi^-$ decay is also described, obtaining the $B^\pm\to K^\pm K^+K^-$ channel as output. We also found agreement with LHCb experimental data, as in the previous case. The new LHCb release of the 2011/2012 CPV two-body distributions in all three-body channels, with light charged pseudo-scalars, shows all the previous features for two-body invariant masses below 2 GeV, discussed above, in addition presenting new sources of CPV in the high $KK$, $\pi\pi$, $K\pi$ invariant masses around 4 GeV. In this contribution, the model described above is extended to study the CP violation in this high mass energy region. The CPV occurring in this sector of the phase space could be associated with the final state interaction coupling the pair of light pseudo-scalars to double charm B decay channels, as suggested long ago by Wolfenstein. We will explore this idea in the context of our previous CPT invariant B decay formalism with final state interaction and study the CPV data of the new LHCb release in the invariant two-body mass region around 4 GeV.
        Speaker: Mr Jorge Alvarenga Nogueira (Instituto Tecnológico de Aeronáutica)
      • 15:00
        Model independent measurement of the leptonic kaon decay K+- —>mu+- nu e+ e- (12' + 3') 15m
        The NA48/2 experiment at CERN collected a very large sample of charged kaon decays into multiple final states. From this data sample we have reconstructed about 1500 events of the very rare decay K+- —>mu+- nu e+ e- over almost negligible background in the region with m(e+e-) above 140 MeV, which is of great interest in Chiral Perturbation Theory. We present the m_ee spectrum and a model-independent measurement of the decay rate for this region.
        Speaker: Radoslav Marchevski (CERN)
      • 15:15
        First observation of π-K+ and π+K- atoms, their lifetime measurement and πK scattering lengths evaluation. (12' + 3') 15m
        The Low Energy QCD allows to calculate the π-π and π-K scattering lengths with high precision. There are accurate relations between these scattering lengths and π+-π-, π-K+, π+K- atoms lifetimes. The experiment on the first observation of π-K+ and π+K- atoms is described and results are presented. The atoms were generated on Ni and Pt targets hit by the PS CERN proton beam with momentum P=24 GeV/c. Moving in the target, part of atoms break up producing characteristic π-K pairs (atomic pairs) with small relative momentum Q in their c.m.s. In the experiment, we detected na=345+-61 (5.7 standard deviations) π-K+ and π+K- atomic pairs. The main part of π-K pairs are produced in free state. The majority of particles in these pairs are generated directly or from short-lived sources as rho, omega and similar resonances. The electromagnetic interactions in the final state create Coulomb pairs with a known dependence on Q of the number of pairs. This effect allows to evaluate the number of these Coulomb pairs. There is a precise ratio (~1%) between the number of π-K+ (π+K-) Coulomb pairs with small Q and the number of produced π-K+ (π+K-) atoms. Using this ratio, we obtained the numbers of generated π-K+ and π+K- atoms Na=1200+-80 in total. The breakup probability Pbr=na/Na depends on the atom lifetime. Using for Ni and Pt targets this dependence, known with a precision about 1%, the πK atom lifetime was measured and from its value the πK scattering lengths were evaluated. The presented analysis shows that the π-K+ and π+K- atoms production in the p-nucleus interactions increases by 16 and 38 times respectively if the proton momentum P is increased from 24 GeV/c up to 450 GeV/c.
        Speaker: Leonid Afanasyev (Joint Inst. for Nuclear Research (RU))
      • 15:30
        Recent results of the high-energy spin physics program at RHIC at BNL (12' + 3') 15m
        High energy polarized $p+p$ collisions at $\sqrt{s}=200-500\,$GeV at the Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) provide a unique way to probe the proton spin structure and dynamics using hard scattering processes. The production of jets and hadrons is the prime focus of gluon polarization studies. The production of $W^{-(+)}$ bosons at $\sqrt{s}=500\,$GeV provides an ideal tool to study the spin-flavor structure of the proton. Various measurements on the study of transverse spin effects have been performed. Recent results will be presented followed by a brief outlook of future spin physics opportunities at RHIC and an Electron-Ion Collider facility.
        Speaker: Prof. Bernd Surrow (Temple University)
    • 14:00 15:40
      Top Quark and Electroweak Physics: 7 Chicago 9

      Chicago 9

      Convener: Joao Barreiro Guimaraes Da Costa (Chinese Academy of Sciences (CN))
      • 14:00
        Experimental studies towards a precise measurement of the W mass at ATLAS and CMS (15' + 5') 20m

        A precise O(10 MeV) measurement of the W boson mass is a stringent test of the standard model. The talk will discuss the experimental and theoretical challenges that need to be faced in order to achieve this level of precision. In addition, the status of various experimental studies, calibrations and state-of-the-art simulations related with this measurement will be presented.

        Speaker: Luca Perrozzi (Eidgenoessische Tech. Hochschule Zuerich (CH))
      • 14:20
        Electroweak precision observables in the Standard Model and beyond: present and future (15' + 5') 20m
        We revisit the global fit to electroweak precision observables in the Standard Model (SM), including the indirect determination of SM parameters and a detailed analysis of the compatibility between the SM and experimental data. We present updated constraints on general extensions of the SM (oblique parameters: STU and (delta)epsilons, modified Zbb couplings, modified Higgs couplings to vector bosons). We also present the projection of the fit with the expected experimental improvements at future e+e- colliders. All results have been obtained with the HEPfit code.
        Speaker: Dr Jorge de Blas (INFN Rome)
      • 14:40
        Electroweak Physics at FCC-ee (15' + 5') 20m
        The Future Circular Collider with electron-positron beams (FCC-ee) should provide improvements of the electroweak precision measurement concerning Z, W, H and their masses by a large factor over the present status. The unparalleled experimental precision would open, via Electroweak loop corrections, a broad discovery potential for new, at least weakly interacting particles up to high energy scales. The Z boson mass and width, as well as the Z → bb partial width, and the forward-backward asymmetries for leptons and quarks can be measured with high precision with the run at the Z pole, where the instantaneous luminosity is expected to be five to six orders of magnitude larger than LEP. As a result, a precise determination of the effective weak mixing angle, as well as of the running electromagnetic coupling αQED(mZ2) can be extracted directly from the data. At centre-of-mass energies around 160 GeV, corresponding to the WW production threshold, the W boson mass and width can be determined precisely with high-statistics cross section measurements at several energy points. The key breakthrough for this exceptional performance is the continuous beam energy determination by resonant depolarization of the beams. Considerable improvements of the strong coupling constant determination down to a precision of Δαs(mZ)≃±0.0001 will be possible with the measurements of the hadronic widths of the Z and W bosons.
        Speaker: Mario Antonelli (Istituto Nazionale Fisica Nucleare Frascati (IT))
      • 15:00
        EW Physics at CEPC (15' + 5') 20m
        Focusing on the Post-Higgs-Discovery era of High Energy Frontier, the CEPC is envisioned to be a future circular collider with multiple operation phases. The CEPC has a total circumference of at least 54 km and at least two interaction points. In its 10 years operation at ~240 GeV, it will collect a sample of ~1M e+e- -> ZH events. CEPC will also collide e+e- at ~M(Z) producing 10 billion Z bosons in one year. This data will boost the precision of EW measurements by orders of magnitude. This talk introduce the electroweak physics program and at the CEPC.
        Speaker: Zhijun Liang (Chinese Academy of Sciences (CN))
      • 15:20
        Top Physics at FCC-ee (15' + 5') 20m
        In the framework of the FCC project, the FCC-ee collider program contains a specific run at the center of mass energy around 350 GeV with an integrated luminosity corresponding to the production of about 1 Million top quark pairs. The ultimate goal is to obtain the most precise measurement of the top mass with a threshold scan from 340 to 350 GeV. However, the top physics program at the FCC-ee is extremely rich and comprises, among other measurements, the study of the achievable precision at or below the per-cent level on top couplings to Z and gamma with a specific scan just above the top-pair threshold (√s ~ 365-370 GeV), the indirect measurement of the top-Yukawa coupling, top width, processes with FCNC and rare top decays. It can be shown that the precision obtained at this machine is able to probe new physics scales up to several TeV and to fully characterize a large variety of Composite Higgs models. This result in a perfect complementarity with direct measurements obtained in the top sector and elsewhere with the FCC-hh 100 TeV machine later on.
        Speaker: Prof. Freya Blekman (IIHE, Vrije Universiteit Brussel (BE))
    • 15:45 16:15
      Break 30m
    • 16:15 18:00
      Beyond the Standard Model: 10 Chicago 7

      Chicago 7

      Conveners: Bruce Mellado Garcia (University of the Witwatersrand), Seema Sharma (Indian Institute of Science Education and Research (IN))
      • 16:15
        Searches for leptoquarks and excited leptons with the ATLAS detector (15' + 5') 20m
        Searches for pair-produced first and second generation leptoquarks are presented for final states consisting of either two charged leptons and at least two jets or a charged lepton plus missing transverse momentum and at least two jets. Searches for excited leptons in two lepton plus two jet final states are also shown. The studies reported use data recorded by the ATLAS experiment at sqrt(s) = 13 TeV during 2015 and 2016.
        Speaker: Simon Viel (Lawrence Berkeley National Lab. (US))
      • 16:35
        Searches for long-lived particles at CMS (15' + 5') 20m
        Many extensions of the standard model predict new particles with long lifetimes, such that the position of their decay is measurably displaced from their production vertex. We present recent results of searches for exotic long-lived particles obtained using data recorded by the CMS experiment at Run-II of the LHC.
        Speaker: Jamie Antonelli (The Ohio State University (US))
      • 16:55
        Searches for displaced hadronic and lepton jets at ATLAS (10' + 2') 12m

        Results of searches for long-lived particles that decay to either pairs of
        hadronic jets or clusters of variously displaced hadronic vertices
        (emerging jets) in proton-proton collisions with the ATLAS detector at a
        center-of-mass energy of 13 TeV are presented. The results are interpreted
        in the context of several models, including hidden valleys with high-mass
        scalars, baryogenesis models, stealth SUSY, and models with QCD-like dark
        hadronization.

        Speaker: Edward Moyse (University of Massachusetts (US))
      • 17:07
        Search for heavy bosons and lepton flavour violation with dileptons with CMS (15' + 5') 20m

        Numerous new physics models, e.g., theories with extra dimensions and various gauge-group extensions of the standard model, predict the existence of heavy resonances decaying to final states containing leptons. This talk presents searches for new physics in the dilepton, lepton+MET, and Z(ll)gamma final states at CMS, focusing on the recent results obtained using data collected during the 2015 run as well as the first part of the 2016 run.

        Speaker: Hwi Dong Yoo (Seoul National University (KR))
      • 17:27
        Search for strong gravity and anomalously charged objects with the ATLAS detector (15' + 5') 20m

        Results of searches for particles with anomalously high or fractional
        electric charge produced in proton-proton collisions in the ATLAS detector
        at a center-of-mass energy of 13 TeV are presented. Such signatures,
        encompassing particles with charges from 2 to 60 times the electron charge,
        involve high levels of ionization in the ATLAS detector and can arise from
        magnetic monopoles or models involving technicolor, doubly charged Higgs
        bosons or composite dark matter models.

        Speaker: Christopher Lester (University of Cambridge (GB))
      • 17:47
        Searches for long lived SUSY particles (10' + 2') 12m

        Several supersymmetric models predict massive long-lived supersymmetric particles with lifetimes from fractions of a nanosecond to lifetimes that are effectively stable in the detector. Such particles may be detected through abnormal specific energy loss, disappearing tracks, displaced vertices, long time-of-flight or late calorimetric energy deposits. The talk presents recent results from searches for long-lived supersymmetric particles with the ATLAS detector. The increase in the center-of-mass energy of the proton-proton collisions gives a unique opportunity to extend the sensitivity to production of supersymmetric particles at the Large Hadron Collider. Results will be based on pp collisions at sqrt(s) = 13 TeV.

        Speaker: Laura Jeanty (Lawrence Berkeley National Lab. (US))
    • 16:15 18:00
      Computing: Data Management Superior B

      Superior B

      Convener: Salman Habib (Argonne National Laboratory)
      • 16:15
        Data Scouting in CMS (15' + 5') 20m
        Back in 2011, the CMS collaboration introduced Data Scouting as a way to produce physics results with events that could not be stored on disk, due to resource limits in the data acquisition and offline infrastructure. This technique was proved to be effective during 2012, when 18 inverse fb of 8 TeV collisions were collected. This technique is now a standard ingredient for CMS and ATLAS data-taking strategy. In this talk, we present the status of data scouting in CMS and the improvements introduced fin 2015 and 2016, which promoted data scouting to a coherent discovery tool for the LHC Run II.
        Speaker: Dustin James Anderson (California Institute of Technology (US))
      • 16:35
        LHCb distributed computing in Run II and its evolution towards Run III (15' + 5') 20m
        This contribution reports on the experience of the LHCb computing team during LHC Run II and its preparation for Run III. Furthermore a brief introduction on LHCbDIRAC, i.e. the tool to interface to the experiment distributed computing resources for its data processing and data management operations is given. Run II, which started in 2015, has already seen several changes in the data processing workflows of the experiment. Most notably the ability to align and calibrate the detector between two different stages of the data processing in the high level trigger farm, reducing the need for a second pass processing of the data offline. In addition a fraction of the data is immediately reconstructed to its final physics format in the high level trigger and only this format is exported from the experiment site to the physics analysis. These concept have successfully been tested and will continue to be used for the rest of Run II. Furthermore the distributed data-processing has been improved with new concepts and technologies as well as adaptations to the computing model. In Run III the experiment will see a further increase of instantaneous luminosity and pileup leading to even higher data rates to be exported. The signal yield will further increase which will have impacts on the data processing model of the experiment and the ways how physicists will analyse data on distributed computing facilities. Also connected to the increased signal yield is the need to produce more Monte Carlo samples. The increase in CPU work cannot be absorbed by an increase in hardware resources. The changes needed in the data processing applications will be discussed in the area of multi-processor aware applications, changes in the scheduling framework of the physics algorithms and the changes in the experiment data event model to facilitate SIMD instructions.
        Speaker: Antonio Falabella (Universita e INFN, Bologna (IT))
      • 16:55
        Getting the Most from Distributed Resources: an Analytics Platform for ATLAS Computing Services (15' + 5') 20m
        To meet a sharply increasing demand for computing resources in LHC Run 2, ATLAS distributed computing systems reach far and wide to gather CPU and storage capacity to execute an evolving ecosystem of production and analysis workflow tools. Indeed more than a hundred computing sites from the Worldwide LHC Computing Grid, plus many “opportunistic” facilities at HPC centers, universities, national laboratories, and public clouds, combine to meet these requirements. These resources have characteristics (such as local queuing availability, proximity to data sources and target destinations, network latency and bandwidth capacity, etc.) affecting the overall processing throughput. To quantitatively understand and in some instances predict behavior, we have developed a platform to aggregate, index (for user queries), and analyze the more important information streams affecting performance. These data streams come from the ATLAS production system (PanDA) and distributed data management system (Rucio), the network (throughput and latency measurements, aggregate link traffic), and from the computing facilities themselves. The platform brings new capabilities to the management of the overall system, including warehousing information, an interface to execute arbitrary data mining and machine learning algorithms over aggregated datasets, a platform to test usage scenarios, and a portal for user-designed analytics dashboards.
        Speaker: Ilija Vukotic (University of Chicago (US))
      • 17:15
        Handling, monitoring, and recent improvements in data processing and Monte Carlo production in the CMS Experiment (25' + 5') 30m
        A Monte Carlo (MC) production for a large-scale experiment like CMS is a vast effort, extending to as many as 3000 individual samples to be produced, with different conditions (e.g., detector alignment), different inputs (e.g., partonshower vs ME generators) and many workflows (e.g., parametrized simulation vs detailed GEANT-based simulation). In run 1 there was a tight coupling of workflow classes to types of sites. This has been drastically relaxed in run 2 to maximize computing operational flexibility. This talk describes the strategy followed by the CMS experiment to collect, manage, process and track MC requests, as well as the tools written and deployed to satisfy the MC needs of each physics group with automated computing operations tools. In the presentation we highlight experiences gained with these tools during Run 2 data taking.
        Speaker: Dr Jean-Roch Vlimant (California Institute of Technology (US))
      • 17:45
        Impact of tracker layout and algorithmic choices on cost of computing at high pileup. (12' + 3') 15m

        High luminosity operation of the LHC is expected to deliver proton-proton collisions to experiments with average number of pp interactions reaching 200 every bunch crossing. Reconstruction of charged particle tracks with current algorithms, in this environment, dominates reconstruction time and is increasingly computationally challenging.
        We discuss the importance of taking computing costs into account as a critical part of future tracker designs in HEP as well as the importance of algorithms used.

        Speaker: Slava Krutelyov (Univ. of California San Diego (US))
    • 16:15 18:00
      Dark Matter Detection: 6 Chicago 10

      Chicago 10

      Convener: Prof. Kentaro Miuchi (Kobe University)
      • 16:15
        SuperCDMS SNOLAB Status and Prospects (15' + 5') 20m
        There is an overwhelming body of astrophysical data that confirms the existence of dark matter. This makes direct searches for dark matter one of the most promising ways to discover new particles and fields. For over a decade, the Cryogenic Dark Matter Search has pioneered the use of athermal phonon and ionization sensors to achieve world-leading sensitivity to a theoretically-favored dark matter candidate, the Weakly Interacting Massive Particle. This endeavor is far from complete, however. The discovery of the Higgs coupled with the lack of any confirmed new physics beyond the Standard Model, has made it increasingly important to explore all regions of parameter space in the search for dark matter. Thus the SuperCDMS collaboration is now focusing on the search for low mass WIMPs and other light dark matter particles. A "next-generation" (G2) experiment, to be built at SNOLAB, will push sensitivity to light WIMPs many orders of magnitude below present-day limits. This will be achieved with a mixed payload of germanium and silicon detectors and with two detector designs, the iZIP and the HV detector. I will describe the concept for the SuperCDMS SNOLAB experiment, discuss the sensitivity to dark matter achieved with iZIP and HV detectors, and present the current status and progress towards construction.
        Speaker: Dr Lauren Hsu (Fermilab)
      • 16:35
        DAMIC : Low Mass Dark Matter Search Using CCDs (15' + 5') 20m
        The DAMIC detector, currently taking data at Snolab, is a Dark Matter search experiment that employs scientific grade CCDs made of silicon as target material. The low readout noise of the CCDs yield to a ionization energy threshold below 60 eVee and provides optimal sensitivity for low mass WIMPs (< 20 GeV). The pixelization (15 microns) and superb energy resolution of the detectors allow for unique background rejection and identification techniques. We present here an overview of the DAMIC experiment together with a summary of the latest results produced using data acquired at Snolab since its installation in December 2012. We also discuss the commissioning schedule and reach of DAMIC100, a 100 g silicon target detector currently being installed at SNOLAB.
        Speaker: juan estrada (fermilab)
      • 16:55
        The KIMS-NaI experiment at Yangyang (15' + 5') 20m
        The KIMS group searches for dark-matter interactions using an array of scintillating NaI(Tl) crystals that serve both as a WIMP-interaction target and detector in the low-background environment of the Yangyang underground laboratory. The group has made significant progress to develop low-background, high light-yield, NaI(Tl) crystals for such a WIMP dark-matter search. The goal of this NaI(Tl) experiment is to make an unambiguous test of the controversial DAMA/LIBRA annual modulation signature. So far, studies with more than ten prototype NaI(Tl) crystals have shown progress in the reduction of internal contaminations of radioisotopes. With a new shielding at Yangyang, we plan to start the first phase of the experiment using a total of 100~kg of KIMS and DM-ice crystals. Soon, we expect to achieve a background level of less than 1~counts/day/keV/kg for recoil energies around 2~keV with a total mass of 200~kg. The current status of the effort is reported.
        Speaker: Chang Hyon Ha (IBS)
      • 17:15
        Results from the PandaX-II commissioning run (15' + 5') 20m
        The PandaX dark matter experiment searches WIMP-nucleon scattering signals in China JinPing Underground Laboratory (CJPL) with a rock burden of 2400 m, employing the dual-phase xenon Time Projection Chamber (TPC) technology. After the completion of PandaX-I, the upgraded experiment, PandaX-II, has been equipped with a 580 kg active xenon target, with a major change on the detector itself, including a cleaner vessel, more photocathode coverage and larger TPC. A commissioning run was carried out in CJPL in late 2015. In this talk, we will present the results from the commissioning run, as well as the current status of the experiment.
        Speaker: Prof. Yong Yang (Shanghai Jiao Tong University)
      • 17:35
        DarkSide-50: status of the detector and results (15' + 5') 20m
        DarkSide-50 is a direct dark matter search experiment operating underground at Laboratori Nazionali del Gran Sasso. It is based on a Time Projection Chamber that contains 50 kg of active argon and it is placed inside an active neutron veto based on a boron-loaded organic scintillator, which is in turn installed inside a water Cherenkov muon veto. The experiment started acquiring data in Nov 2013 filled with atmospheric argon. In April 2015 it commissioned the low-radioactivity argon from underground sources and has been running in a stable manner since then. We report the current status of the detector and the latest results, including the measurement of the radioactivity of the underground argon and the most sensitive dark matter search performed with an argon target.
        Speaker: Yann Guardincerri (Fermilab)
    • 16:15 18:00
      Detector: R&D and Performance: Neutrinos Chicago 8

      Chicago 8

      Convener: Marzio Nessi (CERN)
      • 16:15
        Development and Characterisation of Large Size RPC detectors for the INO-ICAL Experiment (12' + 3') 15m
        The India-based Neutrino Observatory (INO) is an approved underground laboratory for doing basic science experiments. It will house multiple on accelerator based experiments. One such experiment will be the massive 51 kton magnetised Iron Calorimeter (ICAL) detector to study atmospheric neutrinos and parameters related to their oscillations. Resistive Plate Chambers (RPCs) detectors will be used as an active detector element for ICAL. The ICAL detector will have three modules each of 17 ktons and 16m X 16m X 14.5m in dimensions. A total number of about 28,000 RPCs of 2m X 2m in size will be used to construct the active part of the ICAL. The RPC detectors were chosen for the ICAL experiment because of their excellent timing resolution of few nanoseconds, high detection efficiency for minimum ionising particles and low cost per unit area. But, to improve the efficiency, time resolution and overcome the ageing problem, the electrode materials are required to have high resistivity and homogeneous smooth surface. Because of the huge numbers of detectors required for ICAL experiment and keeping in mind the long life span of the experiment, it is pertinent to perform a vigorous $R\&D$ to carefully optimise the various detector design and operational parameters like the electrode material, gas composition, operational conditions, etc. to fully exploit all the advantages of the RPC detectors. We first fabricated RPC prototypes of 30 cm x 30 cm in size with different glass and bakelite electrodes and performed the characterisation studies. We then moved on to fabricate large area RPC of 2m X 2m size and constructed a stack of 12 layers of these RPC. We then performed variety of measurements related with effciency, count rate, cross talk, dark current, time resolution and charge spectra as a function of various gas mixtures and environmental conditions. The results from these studies along with the present status of ICAL RPC detectors will be presented in this talk.
        Speaker: Prof. Md Naimuddin (University of Delhi)
      • 16:30
        New 50 cm Photo-Detectors for Hyper-Kamiokande (12' + 3') 15m
        Hyper-Kamiokande is a large water Cherenkov detector planned in Japan with improved photo-detectors. A 50 cm-diameter photomultiplier tube (PMT) was initially developed for Kamiokande, and improved for Super-Kamiokande, where a Venetian blind dynode was adopted for a wide acceptance. Further improvement with a high charge and time resolutions was achieved for Hyper-Kamiokande with a box-and-line dynode as an R12860 PMT by Hamamatsu Photonics K.K. The collection efficiency reaches 95%, superior to 67% of the PMT in Super-Kamiokande. It also gives a higher quantum efficiency of 30% at peak compared to a typical 22% for the Super-K PMT. In addition, we developed a 50 cm-diameter hybrid photo-detector (HPD), R12850 by Hamamatsu, with an avalanche diode that resulted in a higher resolution and detection efficiency. A preamplifier and high voltage module were designed to be equipped inside. Detailed performance evaluation was performed with a stability measurement in a water tank. Many accessories such as a cable, connector and cover, and alternative candidates of photo-detectors for Hyper-Kamiokande are being developed. The development and performance of the improved photo-detectors will be presented.
        Speaker: Yasuhiro NISHIMURA (The University of Tokyo)
      • 16:45
        Studies with the LArIAT light collection system (12' + 3') 15m
        The detection of scintillation from particles in liquid argon time projection chambers (LArTPCs) serves a crucial role in triggering and interaction timing for liquid argon neutrino experiments, with potential to enhance calorimetry and particle identification efficiency as well. The LArIAT experiment provides an opportunity to explore new ideas for light collection in LArTPCs in a controlled test beam environment. Two cryogenic photomultiplier tubes (PMTs) and several varieties of silicon photomultipliers (SiPMs) mounted to custom preamplifier boards are suspended behind the LArIAT TPC's wireplanes. Reflective foils coated in tetraphenyl butadiene (TPB) line the field cage walls to down-shift scintillation vacuum-ultraviolet (VUV) photons into detectable visible light. Analyses are underway which use this light to identify and study Michel electrons, improve particle identification, and enhance calorimetry of beam particles by combining light with total charge collected on the wireplanes.
        Speaker: William Foreman (University of Chicago)
      • 17:00
        The WA105-3x1x1 m3 dual phase LAr-TPC demonstrator (12' + 3') 15m
        The dual phase Liquid Argon Time Projection Chamber (LAr TPC) is the start-of-art technology for neutrino detection thanks to its superb 3D tracking and calorimetry performance. Its main feature is the charge amplification in gas argon which provides excellent signal-to-noise ratio. Electrons produced in the liquid argon are extracted in the gas phase. Here, a readout plane based on Large Electron Multiplier (LEM) detectors provides amplification before the charge collection onto an anode plane with strip readout. The charge amplification enables constructing giant LAr-TPCs with drift lengths exceeding 10 meters without deteriorating the charge imaging performance. Following a staged approach the WA105 collaboration is constructing a dual phase LAr-TPC with an active volume of 3x1x1 m3 that will be tested with cosmic rays before end of 2016. Its construction and operation aims to test scalable solutions for the crucial aspects of this technology: ultra high argon purity in non-evacuable tank, large area dual phase charge readout system in several square meter scale, and accessible cold front-end electronics. A milestone was achieved last year in the completion of the 24 m3 cryostat that hosts the TPC. This is the first cryostat based on membrane technology to be constructed at CERN and is therefore also an important step towards the realisation of the upcoming protoDUNE detectors. The 3x1x1m3 LAr-TPC will be described in detail and we will report on the construction progress.
        Speaker: Sebastien Murphy (Eidgenoessische Tech. Hochschule Zuerich (CH))
      • 17:15
        Results from Engineering Run of the Coherent Neutrino Nucleus Interaction Experiment (CONNIE) (12' + 3') 15m
        CONNIE is an experiment that uses Charge Coupled Devices (CCD) with the aim to detect low-energy neutrinos through their coherent scattering with nuclei. The CONNIE detector prototype is operating at a distance of 30 m from a 3.8 GWth nuclear power plant. The extremely low energy threshold of our CCDs allows the detection of ionization signals produced by neutrino-nucleus recoils as low as 50 eV. We report on the results of the engineering run with 4 g of active mass. The CCD detector array is described, and the performance observed during the first year is discussed. The events rates with reactor ON and reactor OFF are compared. The results demonstrate that a cryogenic CCD based detector can be remotely operated at the reactor site with a stable noise below 2e- RMS and stable background. The success of the engineering test provides a clear path for the upgraded 100 g detector to be deployed during 2016. It also has opened the door to more ambitious CCD based detectors, more massive, lower noise, lower threshold and a compact low noise Data Acquisition System.
        Speaker: gustavo cancelo (Fermilab)
      • 17:30
        Developing a water Cherenkov optical time-projection chamber (12' + 3') 15m
        The prospect of large-area, scalable, and high-granularity photodetectors opens the possibility of building a water-based 'optical time-projection chamber' (OTPC), in which high-energy charged-particle tracks are reconstructed by measuring the relative times and positions of the `drifted' Cherenkov photons. A first experimental test the OTPC concept was performed at the MCenter Fermilab Test-Beam Facility using a 40 kg cylindrical water volume, which was instrumented with an array of small, commercial micro-channel plate photo-multipliers (MCP-PMTs) in combination with optical mirrors. The MCP-PMT signals were collected on 50$\Omega$ transmission lines and digitized using a 180-channel data acquisition system based on a front-end custom 10 GSPS waveform sampling circuit. An initial test-beam run examined the detector response to multi-GeV muons. Approximately 80 Cherenkov photons are detected for a through-going muon track in a total event duration of about 2 ns. By measuring the time-of-arrival and the position of these photons at the surface of the detector to better than 100 ps and a few mm, we measure a 3D spatial resolution of 15 mm on the particle track.
        Speaker: eric oberla (uchicago)
      • 17:45
        Design of the LBNF Beamline (12' + 3') 15m
        The Long Baseline Neutrino Facility (LBNF) will utilize a beamline located at Fermilab to provide and aim a neutrino beam of sufficient intensity and appropriate energy range toward DUNE detectors, placed deep underground at the Sanford Underground Research Facility (SURF) in South Dakota. The primary proton beam (60-120 GeV) will be extracted from the MI-10 section of Fermilab’s Main Injector and will be transported via a series of sixty nine conventional magnets to a solid target. Neutrinos are produced after the protons hit the target and produce mesons which are subsequently focused by magnetic horns into a 194m long decay pipe where they decay into muons and neutrinos. The hadron absorber, located directly downstream of the decay pipe is designed to absorb the residual energy from protons and secondary particles which have not decayed. Muon detectors placed downstream of the hadron absorber will provide important information about the neutrino beam properties such as the beam direction and intensity as well as the associated muon spectrum. The parameters of the facility were determined taking into account the physics goals, spacial and radiological constraints and the experience gained by operating the NuMI facility at Fermilab. The LBNF beamline facility is designed for initial operation at a proton-beam power of 1.2 MW, with the capability to support an upgrade to about 2.4 MW. LBNF/DUNE obtained CD-1 approval in November 2015. We discuss here the design status and the associated challenges as well as the R&D and plans for improvements before baselining the facility.
        Speaker: Vaia Papadimitriou
    • 16:15 18:00
      Education and Outreach: 3 Huron

      Huron

      Conveners: Azwinndini Muronga, Kate Shaw (INFN Gruppo Collegato di Udine and ICTP Trieste)
      • 16:15
        The International Physics Masterclasses and Particle Physics Workshops as professional development tools for high school teachers in São Paulo, Brazil (12' + 3') 15m
        The São Paulo Research and Analysis Center (SPRACE) was implemented in 2003 to provide the necessary means for the participation of researchers from the State of São Paulo in high energy physics experiments. Currently the SPRACE researchers are members of the Compact Muon Solenoid (CMS) collaboration at CERN and its computers contribute to the processing, storage and analysis of data produced by that experiment. Simultaneously, the SPRACE team develops several education and outreach projects, among which we highlight the SPRACE electronic game and the participation in the International Physics Masterclasses promoted by IPPOG. The organization of the International Masterclass at SPRACE started in 2008 and since then more than 800 high school students from 44 schools attended to the event. Since 2009 activities for teachers (Teachers' Day) also takes place and in 2012, perceiving the need to expand actions and provide specific formation for teachers who brought their students to the event but had no subsidies to continue the actions in their schools, the organizing team promoted the first Particle Physics Workshop. In this four-day event, teachers participated in lectures, discussions and experiments about high energy physics. In October 2015, continuing the teacher professional development actions, the second Particle Physics Workshop was held with the aim of bringing to the participants the results of cutting edge research in this area and bring the physics studied in large accelerators to school. Teachers also had the opportunity to engage with scientists and share their experiences on particle physics teaching. In this talk, we will present an analysis made up from questionnaires answered by teachers and students who attended to the last workshop and the 2016 edition of the Masterclasses. The aim is to evaluate the contributions of the workshop for the previous preparation of the Masterclasses attendants as well as identify strengths and weaknesses of the event and offer suggestions for the improvement and the implementation of new initiatives focused on education and outreach.
        Speaker: Mr Rodrigo Araujo (Post-Graduation Program at Universidade de São Paulo - USP)
      • 16:30
        Driving from Chicago to Buenos Aires: instrumentation schools during a road trip across the Americas. (12' + 3') 15m
        The Escaramujo Project (www.escaramujo.net) was a series of eight hands-on laboratory courses on High Energy Physics and Astroparticle Instrumentation, in Latinamerican Institutions. The Physicist Federico Izraelevitch traveled on a van with his wife and dogs from Chicago to Buenos Aires teaching the courses. The sessions took place at Institutions in Mexico, Guatemala, Costa Rica, Colombia, Ecuador, Peru and Bolivia at an advanced undergraduate and graduate level. During these workshops, each group built a modern cosmic ray detector based on plastic scintillator and SiPMs, designed specifically for this project. After the courses, a functional detector remained at each institution to be used by the faculty to facilitate the training of future students and to support and enable local research activities. The five-days schools covered topics such as elementary particle and cosmic ray Physics, radiation detection and instrumentation, low-level light sensing with solid state devices, front-end analog electronics and object-oriented data analysis (C++ and ROOT). About a hundred of talented and highly motivated young students were reach out with the initiative. With the detector as a common thread, they were able to understand the designing principles and the underlying Physics involved, build the device, start it up, characterize it, take data and analyze it, in the way of real elementary particle Physics experiment. Besides the aims to awaken vocations in science, technology and engineering, The Escaramujo Project was an effort to strengthen the integration of academic institutions in Latin America into the international scientific community.
        Speaker: Federico Izraelevitch (Fermilab)
      • 16:45
        Panel Discussion 1h 15m

        Hot topics on the table for discussion with our Panel! Comes with questions and ideas!!

        Speakers: Arturo Sanchez (Universita degli Studi di Napoli Federico II, Universidad de Los Andes), Don Lincoln (Fermi National Accelerator Lab. (US)), Dr Karen Gibson (Case Western Reserve University), Kathryn Jepsen (SLAC National Accelerator Laboratory), Ms Marjorie Bardeen (Fermilab)
    • 16:15 18:00
      Neutrino Physics: R&D + pheno@future facilities Chicago 6

      Chicago 6

      Convener: Dr Werner Rodejohann
      • 16:15
        Revisiting Neutrino Oscillation Probabilities in Matter (15' + 2') 17m
        Recently significant progress has been made in the analytic understand of neutrino oscillation probabilities in matter, see arXiv:1505.01826. This work has recently been further extended to large L/E regions and gives the exact probability in vacuum, this new perturbation theory is numerically very accurate and the expressions for the oscillation probabilities is remarkable compact. These oscillation probabilities are applicable to all current and further experiments, T2K, NOvA, DUNE etc and the form allows an enhanced level of analytic understand for these oscillation probabilities. By the time of the ICHEP conference we expect to have 2 or more additional papers on this subject as these methods can also be extended into the sterile neutrino sector.
        Speaker: Peter Denton (Vanderbilt U and Fermilab)
      • 16:32
        JUNO oscillation physics details (15' + 3') 18m
        The Jiangmen Underground Neutrino Observatory (JUNO) is a multipurpose neutrino experiment being built in China. The primary goal is to determine the neutrino mass hierarchy and precisely measure the neutrino oscillation parameters by detecting reactor antineutrinos at a baseline of 53 km from Taishan and Yangjiang reactor power plants with a nominal thermal power of 36 GW. The detector is designed to reach a target mass of 20 kt liquid scintillator and an energy resolution of 3%/sqrt(E). JUNO is planning to start data taking around 2020. The principle and physics potential to determine the mass hierarchy is presented in this talk. Key requirements on the energy resolution and energy calibration are emphasized. In addition, three neutrino oscillation parameters, $\sin^22θ_{12}$ ,$\Delta𝑚^2_{21}$ and $\Delta𝑚^2_{32}$ will be measured with a precision better than 1%, significant improved from the current precision level of 3-10%.
        Speaker: Liang Zhan (Institute of High Energy Physics, CAS)
      • 16:50
        Sterile Neutrinos at DUNE (15' + 3') 18m
        I discuss the sensitivity of the proposed DUNE experiment to the existence of new neutrino mass eigenstates. I allow for a large range of new mass-squared difference, from values smaller than $10^{-6}$eV$^2$ to values larger than 1 eV$^2$ and discuss the sensitivity to new sources of CP-invariance violation. I also address how well DUNE can disentangle different new physics scenarios, including the existence of a fourth neutrino, non-standard neutrino interactions, and the existence of extra-dimensions of space. Finally, I comment on the complementarity of DUNE and other next-generation long-baseline neutrino experiments.
        Speaker: Andre De Gouvea (Northwestern University)
      • 17:08
        The impact of sterile neutrinos on long-baseline measurements (15' + 2') 17m
        With the Deep Underground Neutrino Experiment (DUNE) as an example, we show that even one sterile neutrino of mass ~ 1 eV, if real, could significantly impact the interpretation of future long-baseline measurements. Such measurements, interpreted without taking the sterile neutrino into account, could suggest that CP violation is absent or at most very small, when in fact it is large. Observations interpreted as measuring the sole oscillation-relevant CP-violating phase in the standard 3 x 3 leptonic mixing matrix could in fact be measuring something else. The conclusion is that it is very important to experimentally probe the possibility that light sterile neutrinos exist. We report on the degree to which future searches for these sterile neutrinos, if negative, need to constrain sterile-active mixing to ensure that long-baseline experiments can safely be interpreted without taking sterile neutrinos into account.
        Speaker: Prof. Raj Gandhi (Harish Chandra Research Institute)
      • 17:25
        DUNE sensitivities to New Physics affecting neutrino propagation (15' + 3') 18m
        The Deep Underground Neutrino Experiment (DUNE) will observe neutrinos traveling through 1300 km of Earth matter. Its long baseline, high neutrino energies and low systematic errors make it an ideal setup to test for effects coming from New Physics affecting neutrinos in propagation through matter. In this talk I will present the expected sensitivities to effective operators giving non- standard neutral current neutrino interactions. I will also pay special attention to potentially harmful degeneracies between standard and non-standard oscillation parameters.
        Speaker: Pilar Coloma (Fermilab)
      • 17:43
        CP-violation and non-standard neutrino interactions at long baseline experiments (15' + 2') 17m
        We discuss the impact of non-standard neutrino matter interactions (NSI) in propagation on the determination of CP phase in the context of the long baseline accelerator experiments such as Deep Underground Neutrino Experiment (DUNE). DUNE will mainly address the issue of CP violation in the leptonic sector. Here we study the role of NSI and its impact on the question of observing the CP violation signal at DUNE. We consider two scenarios of oscillation with three active neutrinos in absence and presence of NSI. We elucidate the importance of ruling out subdominant new physics effects introduced by NSI in inferring CP violation signal at DUNE by considering NSI terms collectively as well as by exploiting the non-trivial interplay of moduli and phases of the NSI terms. We demonstrate the existence of NSI-SI degeneracies which need to be eliminated in reliable manner in order to make conclusive statements about the CP phase.
        Speaker: Poonam Mehta (JNU)
    • 16:15 18:00
      Quark and Lepton Flavor Physics: 9 Superior A

      Superior A

      Convener: Phillip Urquijo (University of Melbourne (AU))
      • 16:15
        Implications from ${B\to K^*\ell^+\ell^-}$ observables using $3 \text{fb}^{-1}$ of LHCb data (15' + 5') 20m
        The decay mode $B\to K^* \ell^+\ell^-$ results in the measurement of a large number of related observables by studying the angular distribution of the decay products and is regarded as a sensitive probe of physics beyond the standard model. Recently, LHC$b$ has measured several of these observables using $3 \text{fb}^{-1}$ data, as a binned function of $q^2$, the dilepton invariant mass squared. We show how data can be used without any approximations to extract theoretical parameters describing the decay and to obtain a relation amongst observables within the standard model. We find three kinds of significant disagreement between theoretical expectations and values obtained by fits. The values of the form factors obtained from experimental data show significant discrepancies when compared with theoretical expectations in several $q^2$ bins. We emphasize that this discrepancy cannot arise due to resonances and non-factorizable contributions from charm loops. Further, a relation between form factors expected to hold at large $q^2$ is very significantly violated. Finally, the relation between observables also indicates some deviations in the forward-backward asymmetry in the same $q^2$ regions. These discrepancies are possible evidence of physics beyond the standard model.
        Speaker: Rusa Mandal (The Institute of Mathematical Sciences)
      • 16:35
        Rare leptonic and semileptonic b-hadron decays and Tests of Lepton Flavour Universality at LHCb (10' + 5') 15m
        Rare leptonic and semileptonic decays of B, D and K mesons provide sensitive indirect probes of effects beyond the Standard Model (SM). In the SM, these decays are forbidden at tree level and are therefore suppressed. In particular, the b → s ll processes give access to many observables where effects of New Physics can be observed. Recent results on these searches will be presented. Moreover the possibility to measure new theoretically clean observables, such as the Bs → μμ effective lifetime, will be also shown. In addition we discuss LHCb results concerning tests of lepton flavour universality: the SM predicts, with small uncertainties, the ratios of branching fractions of rare decays involving different lepton flavours to be unity up to lepton mass corrections. The universality of lepton couplings has been tested using the LHCb Run 1 dataset using $B^0 \to K^{(*)} \ell^+ \ell^-$ decays. The most recent results will be presented.
        Speaker: Simone Bifani (University of Birmingham (GB))
      • 16:50
        b to s transitions in the Standard Model and Beyond (15' + 5') 20m
        We analyze several b to s transitions ($B \to K^*l^+l^-$, $B_s \to \phi l^+l^-$, $B \to K^* \gamma$, $B_s \to \phi \gamma$, $B \to X_s \gamma$, $B_s \to \mu^+\mu^-$) and discuss the compatibility of experimental data with the Standard Model, taking into account estimates of state-of-the-art theoretical uncertainties and experimental measurements including updated uncertainties and correlations. We generalize the analysis to physics beyond the Standard Model and discuss the phenomenology in several New Physics scenarios.
        Speaker: Ayan Paul (INFN, Sezione di Roma)
      • 17:10
        Radiative $b$-hadron decays at LHCb (10' + 5') 15m
        Radiative $b$-hadron decays are sensitive probes of New Physics through the study of branching fractions, CP asymmetries and measurements of the polarisation of the photon emitted in the decay. During the LHC Run 1, the LHCb experiment has collected large samples of radiative $b$-hadron decays. We present here the latest LHCb measurements, including new results on the time dependence of $B_s \to \phi \gamma$ decays. These results help in constraining the size of right-handed currents in extensions of the Standard Model.
        Speakers: Carlos Sanchez Mayordomo (Valencia-IFIC), Carlos Sanchez Mayordomo (Instituto de Fisica Corpuscular (ES))
      • 17:25
        Measurements of radiative $B$ meson decays at Belle (10' + 5') 15m
        The $b \to s\gamma$, $d \gamma$ processes are sensitive to new physics since the new heavy particles can enter in the loop and change the branching fractions or kinematic variables. We present results of branching fractions for $B \to X_{s,d} \gamma$ using fully inclusive photon reconstruction with two different tagging techniques. One is the lepton tagging method; the other is the fully-hadronic tagging method. We also report a search for $B \to \phi \gamma$, which proceeds through penguin annihilation. All the analyses are based on the full data set of Belle containing 772 million $B\bar{B}$ pairs.
        Speaker: Hanjin Kim (Yonsei)
      • 17:40
        Searches for rare charm decays at LHCb (10' + 5') 15m
        Following the hints for deviations from the Standard Model in rare B meson decays, searches for rare and forbidden decays of charmed hadrons are of great importance. We present recent results on searches for $D^0 \to hh’ \mu \mu$, $D^0 \to \mu \mu$ and lepton-flavour violating $D^0 \to e\mu$ decays at LHCb.
        Speaker: Andrea Contu (CERN)
    • 16:15 18:00
      Strong Interactions and Hadron Physics: Theory and other Ontario

      Ontario

      Convener: Abdel Nasser Tawfik (ENHEP Egyptian Network of High Energy Physics (EG))
      • 16:15
        How to resolve the proton radius puzzle? (15' + 5') 20m
        In 2010 the first measurement of the proton charge radius from spectroscopy of muonic hydrogen was found to be five standard deviations away from the regular hydrogen value. Almost six years later, this "proton radius puzzle" is still unresolved. One of the most promising avenues to test the muonic hydrogen result is a new muon-proton scattering experiment called MUSE. We describe how effective field theory methods will allow to connect muonic hydrogen spectroscopy to muon-proton scattering in a model-independent way.
        Speaker: Gil Paz (Wayne State University)
      • 16:35
        Field-strength correlators for QCD in a magnetic background (15' + 5') 20m
        We consider the properties of the gauge-invariant two-point correlation functions of the gauge-field strengths for QCD in the presence of a magnetic background field at zero temperature. We discuss the general structure of the correlators in this case and provide the results of an exploratory lattice study for $N_f = 2$ QCD discretized with unimproved staggered fermions. Our analysis provides evidence for the emergence of anisotropies in the non-perturbative part of the correlators and for an increase of the gluon condensate as a function of the external magnetic field.
        Speaker: Enrico Meggiolaro (University of Pisa)
      • 16:55
        X(3872) and search for its bottomonium counterpart at the LHC (20' + 5') 25m

        Text coming

        Speaker: Konstantin Toms (University of New Mexico (US))
      • 17:20
        Neutral pion form factor measurement by the NA62 experiment (12' + 3') 15m
        The NA62 experiment at CERN collected a large sample of charged kaon decays with a highly efficient trigger for decays into electrons in 2007. The kaon beam represents a source of tagged neutral pion decays in vacuum. A measurement of the electromagnetic transition form factor slope of the neutral pion in the time-like region from ~1 million fully reconstructed pi0 Dalitz decay is presented. The limits on dark photon production in pi0 decays from the earlier kaon experiment at CERN, NA48/2, are also reported.
        Speaker: Evgueni Goudzovski (University of Birmingham)
      • 17:35
        Lattice QCD properties and interactions of light nuclei (15' + 5') 20m
        Over the last few years, the realm of applicability of lattice QCD has been extended from single hadrons to light nuclei. I will overview recent studies of light nuclear spectroscopy, nuclear structure in the form of magnetic moments and polarisabilites and of electroweak reactions such as $np \to d \gamma$. I will also discuss prospects for future calculations relevant for experiments at the intensity frontier.
        Speaker: William Detmold (Massachusetts Institute of Technology)
    • 16:15 18:00
      Top Quark and Electroweak Physics: 8 Chicago 9

      Chicago 9

      Convener: Pedro Vieira De Castro Ferreira Da Silva (CERN)
      • 16:15
        Top Mass ​Measurement ​​at D0 (15' + 5') 20m
        We report on the most recent measurements of the mass of the heaviest known standard model particle, the top quark, obtained with the D0 detector at the Fermilab Tevatron collider. We use the full Run II dataset corresponding to $9.7\ $fb$^{-1}$ of $p\bar p$ collisions at $\sqrt s=1.96\ $TeV. We present direct measurements of the top mass in the dilepton decay channels using the matrix element and neutrino weighting approaches. We also present the combination with the measurement in the lepton+jets channel. As an alternative approach to the direct measurement of the mass, we discuss the extraction of the pole mass based on measurements of the inclusive and unfolded differential cross-sections of the $t\bar t$ pair production.
        Speaker: Frederic Deliot (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
      • 16:35
        Measurements of the top quark mass with the ATLAS detector (15' + 5') 20m
        The top quark mass is one of the fundamental parameters of the Standard Model. The latest ATLAS measurements of the top quark mass are presented. A measurement using lepton+jets events is presented, where a multi-dimensional template fit is used to constrain the uncertainties on the energy measurements of jets. The measurements using dilepton and all-hadronic events are also discussed. In addition, measurements aiming to measure the mass in a well-defined scheme are presented like the measurement using ttbar production with an additional jet to extract the top quark mass in the pole-mass scheme.
        Speaker: Andreas Wildauer (Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)
      • 16:55
        Top mass measurements at CMS (15' + 5') 20m

        Measurements of the top quark mass are presented using data collected by the CMS experiment in proton-proton collisions at the LHC at centre-of-mass energies of 7 and 8 TeV. Analyses in several decay channels of top quark pair events are employed to determine the top quark mass. The results are combined and compared to the world average.
        Measurements of the top quark mass employing alternative methods are presented using data collected by the CMS experiment in proton-proton collisions at the LHC in the years 2011 and 2012 at centre-of-mass energies of 7 and 8 !TeV. The alternative methods include the reconstructed invariant mass distribution of the top quark, an analysis of endpoint spectra, measurements from shapes of top quark decay distributions, as well as a measurement using leptonic top quark decays with a J/psi. The dependence of the mass measurement on the kinematic phase space is investigated. Measurements of the difference between the masses of top and anti-top quarks are also presented. Furthermore, the top quark mass, and also alpha_s are extracted from the measured top quark pair cross section.

        Speaker: Elvire Bouvier (Universite Claude Bernard-Lyon I (FR))
      • 17:15
        Relating the top quark MSbar and on-shell masses (15' + 5') 20m
        I will present recent results for the relation between the MSbar mass and the on-shell and related threshold masses based on our recent calculation of the four MSbar-on-shell relation.
        Speaker: Peter Marquard (DESY)
      • 17:35
        Top quark mass calibration for Monte-Carlo event generators (15' + 5') 20m
        The lack of knowledge how the top quark mass parameter in Monte-Carlo event generators (MCs) is related to field theoretically defined mass schemes limits the theoretical interpretation of the top quark mass measurements based on templates obtained from direct reconstruction analyses at hadron colliders. In the first part of the talk I review the conceptual aspects of the problem and argue which classes of field theoretic heavy quark mass definitions have a close relation to the quark mass parameter in MCs. In the second part I describe a method to calibrate the top quark MC mass parameter by fits of MC hadron level predictions for observables with very strong mass sensitivity to corresponding hadron level QCD predictions. I demonstrate the approach for thrust in electron positron collisions using factorization based QCD calculations at NNLL / NLO that account for hadronization and the complete top mass dependence, and I present concrete numerical results.
        Speaker: Moritz Preisser (University of Vienna)
    • 18:00 20:00
      Poster Session: Saturday Riverwalk A/B

      Riverwalk A/B

      • 18:00
        $\theta_{13}$ oscillation analysis in Double Chooz with two detectors 2h
        The Double Chooz experiment is a reactor neutrino disappearance experiment located at the nuclear power plant in Chooz, France. The primary goal of the Double Chooz experiment is to precisely measure the neutrino mixing angle $\theta_{13}$, a neutrino oscillation parameter. The experiment consists of two identical liquid scintillator detectors and measures the electron-antineutrino flux of the two nuclear reactors. The 1 km distant far detector started operation in 2011. The 400 m distant near detector started operation in the end of 2014. The reactor neutrinos are detected by the signature of an inverse beta decay (IBD). Inverse beta decay provides a unique prompt-delayed coincident signal to identify the electron antineutrinos from the reactors and the high correlation between the near and the far detector can significantly suppress the systematics. The neutrino energy spectrum is extracted from the spectrum of the IBD-produced positrons. The IBD-produced neutrons can be captured by Gadolinium or Hydrogen, which provides two independent data samples. Both samples allow the utilisation of the neutrino rate and energy spectral shape information in a combined fit. theta13 is extracted by a simultaneous fit to the data observed by the two detectors. To validate the measurement and suppression mechanism in the fit, multiple statistical methods as well as multiple fit configurations using the two detectors have been developed in Double Chooz. They are supplementary to each other to deliver a precise $\theta_{13}$ value. In this poster, these oscillation analysis methods and configuration will be shown. In addition, the systematics budget and the oscillation fit results will be described.
        Speakers: Ms Denise Hellwig (RWTH Aachen University), Mr Guang Yang (Argonne National Lab/Illinois Institute of Technology), Dr Pau Novella (CIEMAT), Dr Pietro Chimenti (Universidade Federal do ABC), Mr Stefan Schoppmann (RWTH Aachen University), Dr Tsunayuki Matsubara (Tokyo Metropolitan University)
      • 18:00
        $D_0$ and $B_0$ mesons in hot and dense asymmetric non strange medium. 2h
        We calculate the effect of density and temperature of isospin asymmetric non-strange medium on the shift in masses and decay constants of scalar D and B mesons using chiral SU(3) model and QCD sum rule approach. In this work we calculate the values of quark and gluon condensates from the chiral SU(3) model and we use these condensates in the QCD Sum rule framework to calculate the in medium masses and decay constants of scalar D and B mesons. These in medium properties of scalar D and B mesons are helpful to understand the experimental observables of the experiments like CBM and PANDA under FAIR project at GSI, Germany. The results observed in this present work are also compared with the previous results.
        Speaker: Mr Rahul Chhabra (Dr. B R Ambedkar National Institute of Technology, Jalandhar)
      • 18:00
        A Concept for the ILC Positron Source 2h
        The ILC polarized positron source design is based on a polarized photon beam produced in an undulator striking a 14 mm Ti target. Because both the instantaneous and average power is high, the concept of a rotating Ti hoop in the accelerator vacuum is accepted. The baseline approach in the TDR uses water cooling introduced through rotating seals, and rotating seals are used for an axial drive shaft. We are developing a concept using radiation cooling of high performance Ti alloy blades to a water cooled vacuum can, completely eliminating water channels in the vacuum space. The hoop must rotate at ~2000 rpm, and in a blade design should be precisely synchronized to the beam. We are developing a concept for magnetic suspension and drive of the hoop that does not require permanent magnets. The figure below shows one of the concepts. Figure 1- A magnetic suspension system concept for the ILC positron source. Here, the whole rotating body comprising the Ti target, shaft, and rotor is magnetically levitated in a total of five degrees of freedom and driven about z-axis. One thrust active magnetic bearing (AMB) constrains the axial translation, one radial AMB radially supports the center of mass of the whole body, and a self-bearing hysteresis drive radially supports the end of the shaft. The hysteresis self-bearing drive, which is magnet-free, can generate suspension forces as well as the required torque to rotate the whole body.
        Speaker: Prof. Martin Breidenbach (SLAC)
      • 18:00
        A Cosmic Ray Veto Detector for the Mu2e Experiment at Fermilab 2h
        The Mu2e experiment is designed to search for the charged-lepton-flavor-violating process, $\mu^-$ to a $e^-$, with unprecedented sensitivity. The single 105-MeV electron that results from this process can be mimicked by electrons produced by cosmic-ray muons traversing the detector. An active veto detector surrounding the apparatus is used to detect incoming cosmic-ray muons. To reduce the backgrounds to the required level it must have an efficiency of about 99.99% as well as excellent hermeticity. The detector consists of four layers of scintillator counters, each with two embedded wavelength-shifting fibers, whose light is detected by silicon photomultipliers. The design and expected performance of the cosmic ray veto detector will be described.
        Speaker: E. Craig Dukes (University of Virginia)
      • 18:00
        A Heavy Electron Collider to Study Possible H/A Heavy Higgs Production 2h
        The recent hint of a possible observation of a peak in the two photon data at the LHC could be an indication of new physics. There may be several interpretations of what this alleged new physics could be. One possible explanation could be the heavy Higgs partner to the standard model Higgs. A heavy electron collider would be a unique machine to study the heavy Higgs since it could be produced in the S-channel with a large cross section. This paper would discuss the physics possibilities of a heavy Higgs including how a heavy electron collider could be a unique tool to study the possible CP degenerate states of the H and A. Also the paper will review the status of the accelerator physics of a muon collider. A discussion of the heavy electron collider backgrounds and how they can be addressed will also be presented.
        Speaker: Prof. Mary Anne Cummings (Muons, Inc.)
      • 18:00
        A MC study of Kaon Identification Sensitivity in MicroBooNE 2h
        MicroBooNE is a short-baseline neutrino experiment operated with a large liquid argon time projection chamber built on the Fermilab's Booster Neutrino Beamline (BNB). MicroBooNE started collecting data in Fall 2015 and in addition to addressing the low energy electron-like excess observed by the MiniBooNE experiment, the exceptional particle identification capability of MicroBooNE will make it possible to measure low-energy ($\sim$1 GeV) neutrino interactions on argon with high precision. The kaon production cross-section measurement in argon will be of particular interest to future liquid argon experiments such as DUNE searching for proton decay as they face an irreducible background from atmospheric neutrinos. Since the BNB is in an energy region relevant to this background, MicroBooNE is well positioned to produce a background constraint for proton decay searches by measuring the neutrino production of single kaon events in the BNB. This talk will present a MC sensitivity study of kaon identification in MicroBooNE along with an estimation of event rates for various neutrino induced kaon production channels.
        Speakers: Elena Gramellini (Yale U), Varuna Meddage (Kansas State University)
      • 18:00
        A method of measuring parameters of an extensive air shower at Yakutsk EAS array 2h
        Proposed a new method for measuring the cherenkov light from the extensive air shower (EAS) of cosmic rays (CR), which allows to determine not only the primary particle energy and angle of arrival, but also the parameters of the shower in the atmosphere - the maximum depth and "age". For measurements Cherenkov light produced by EAS is proposed to use a ground network of wide-angle telescopes which are separated from each other by a distance 100-300 m depending on the total number of telescopes operating in the coincidence signals, acting autonomously, or includes a detector of the charged components, radio waves, etc. as part of EAS. In a results such array could developed, energy measurement and CR angle of arrival data on the depth of the maximum and the associated mass of the primary particle generating by EAS. This is particularly important in the study of galactic cosmic ray in E> 10^14 eV, where currently there are no direct measurements of the maximum depth of the EAS.
        Speaker: Lev Timofeev (SHICRA SB RAS)
      • 18:00
        A new THGEM-based thermal neutron detector for high detection efficiency 2h
        The THGEM-based detector with cascade boron coating structure is a promising solution for high efficiency thermal neutron detection, instead of those 3He-based. The general idea is to coat boron on the surfaces of several layers of THGEMs. However, the gain difference and neutron scattering and absorption due to THGEMs themselves are problems. A new idea is proposed to avoid these problems. The boron can be coated on surfaces of cascade conversion meshes, such as stainless steel, copper, PCB and aluminum, and only one layer of THGEM for avalanche. In this way, the conversion layers are independent and both surfaces could be coated with boron to double conversion efficiency. More importantly, the material, thickness, hole diameter and hole pitch of each layer can be optimized for better boron film quality, higher conversion efficiency, higher collection efficiency and lower neutron scattering and absorption. In this case, four or five conversion layers are possible. For alpha detection, one layer of THGEM is enough and can ensure the gain uniformity. If the readout board were designed as mirror-pad structure, i.e., both sides of board are pad readout but each two mirrored pads are connected, then one detector can combine with two cascade modules to double detection efficiency without increasing the readout channels. The details of the detector structure, simulation results of thermal neutron conversion efficiency, ionized electron collection efficiency, and detection efficiency will be presented. The primary neutron test results will be showed.
        Speaker: Dr Yuguang Xie (IHEP, Beijing, China)
      • 18:00
        A new µTCA-based waveform digitizer for the Muon g-2 experiment 2h
        We present the design of a µTCA-based waveform digitizer that will be deployed in the Muon g-2 experiment at Fermilab. The digitizer features five independent channels, each with 12-bit, 800-MSPS digitization and a 1-Gbit memory buffer. The data storage and readout along with the configuration are handled by six Xilinx Kintex-7 FPGAs. In addition, the digitizer is equipped with a mezzanine card for analog signal conditioning prior to digitization, further widening its range of possible applications. The performance results of this design will also be presented.
        Speaker: David Sweigart (Cornell University)
      • 18:00
        A scintillation counter consisting of a pure CsI crystal, WLS and APD for Belle II 2h

        Belle II, as the upgrade of Belle, is aiming at searching for New Physics with 40 times higher luminosity. In order to cope with such a high luminosity, pure CsI scintillation crystals whose scintillation time is around 30 nanoseconds have been proposed. And silicon avalanche photodiodes, making up for the low light yield of pure CsI, are considered as photosensors. The application of the innovative WLS which perfectly matches the emission spectrum of pure CsI and quantum efficiency of APD, maximizes the light collection. With the help of cosmic rays, the equivalent noise energy of the counter is measured.

        Speaker: Yifan Jin (The University of Tokyo)
      • 18:00
        A Software Toolkit to Study Systematic Uncertainties of the Physics Models of the Geant4 Simulation Package 2h
        Particle physics experiments make heavy use of the Geant4 simulation package to model interactions between subatomic particles and bulk matter. Geant4 itself employs a set of carefully validated physics models that span a wide range of interaction energies. These models rely on directly measured cross-sections and phenomenological models with physically motivated parameters, and are tuned to cover a very wide range of possible consumers. The aggregated sum of these components is what experiments use to study their apparatus. This raises a critical question of what systematic uncertainties are associated with a particular tune of one or another Geant4 physics model, or a group of models, involved in modeling and optimization of a detector design. In response to multiple requests from the simulation community, the Geant4 collaboration has started a new initiative to address the challenge. We have designed and implemented a comprehensive, modular, user-friendly software toolkit that allows the perturbation of one or multiple parameters of one or several Geant4 physics models involved in the simulation studies, and to perform collective analysis of multiple variants of the resulting physics observables of interest, in order to estimate a systematic uncertainty on a measurement due to the simulation model choices. Based on modern event-processing infrastructure software, the toolkit offers a variety of attractive features, e.g. flexible run-time configurable workflow, comprehensive bookkeeping, easy to expand collection of analytical components. Key functionalities of the toolkit will be presented and highlighted with signature results.
        Speaker: Julia Yarba (Fermi National Accelerator Lab. (US))
      • 18:00
        A study of the charged kaon total interaction cross section on liquid argon in LArIAT 2h
        We present a study of the charged kaon-Argon total interaction cross section in liquid argon performed at the LArIAT experiment. LArIAT is a Liquid Argon Time Projection Chamber (LArTPC) deployed in a dedicated calibration test beam at Fermilab. LArTPC represents one of the most advanced experimental technologies for physics at the Intensity Frontier due to its full 3D-imaging, excellent particle identification (PID) and precise calorimetric energy reconstruction. The LArIAT beamline instrumentation provides a measure of the initial momentum and PID of the particles entering the TPC. Therefore, the initial momentum of kaons tagged by the LArIAT beamline is measured before entering the TPC. The precise calorimetric energy reconstruction of the LArTPC technology enables the measurement of the total differential cross section for the tagged kaons. The kaon-Argon total interaction cross section has never before been measured in LAr; this measurement is a fundamental step to shed light on light meson interactions in nuclei. Additionally, this measurement provides key input to proton decay studies in future LArTPC experiments like DUNE.
        Speaker: Elena Gramellini (Yale U)
      • 18:00
        Absolute branching fractions for Lambdac+ decays at BESIII 2h
        The BESIII detector accumulated 567 pb-1 data at the center-of-mass energy of 4.599 GeV, which is the world's largest e+e- collision sample at the Lambda_c pair threshold. By analyzing this data sample, we report the determinations of the absolute branching fractions of the Lambdac+ semi-leptonic decay into Lambdac e+v, and 12 hadrnoic decays of pKs, pK-pi+, pKspi0, pKspi+pi-, Lambda pi+, Lambda pi+pi0, Lambda pi+pi+pi-, pK-pi+pi0, Sigma0 pi+, Sigma+pi0, Sigma+pi+pi- and Sigma+omega. The precisions of the absolute branching fractions for these decays are improved significantly compared to the PDG values.
        Speaker: Peilian Li (USTC)
      • 18:00
        Achieving the optimal performance of the CMS ECAL in Run II 2h
        Many physics analyses using the Compact Muon Solenoid (CMS) detector at the LHC require accurate, high resolution electron and photon energy measurements. Particularly important are decays of the Higgs boson resulting in electromagnetic particles in the final state. Di-photon events in CMS are also a very important channel in the search for Higgs boson production in association with other particles or in the search for possible new resonances of higher mass. The requirement for high performance electromagnetic calorimetry therefore remains high during LHC Run II. Following the excellent performance achieved in Run I at a center of mass energy of 7 and 8 TeV, the CMS electromagnetic calorimeter (ECAL) started operating at the LHC in Spring 2015 with proton-proton collisions at 13 TeV center-of-mass energy. The instantaneous luminosity delivered by the LHC during Run II is expected to exceed the levels achieved in Run I, using 25 ns bunch spacing. The average number of concurrent proton-proton collisions per bunch-crossing (pileup) is expected to reach up to 40 interactions in 2016. These high pileup levels necessitate a retuning of the ECAL readout and trigger thresholds and reconstruction algorithms, to maintain the best possible performance in these more challenging conditions. The energy response of the detector must be precisely calibrated and monitored to achieve and maintain the excellent performance obtained in Run I in terms of energy scale and resolution. A dedicated calibration of each detector channel is performed with physics events exploiting electrons from W and Z boson decays, photons from pi0/eta decays and from the azimuthally symmetrical energy distribution of minimum bias events. This talk describes the new reconstruction algorithm and calibration strategies that we have implemented to maintain the excellent performance of the CMS ECAL throughout Run II. We will show performance results from the 2015 and 2016 data taking periods and provide an outlook on the expected Run II performance in the years to come.
        Speaker: Menglei Sun (Carnegie-Mellon University (US))
      • 18:00
        Analytical structure of the quark propagator 2h
        In this work we have studied the pole locations of the quark propagator by the solution of quark Dyson Schwinger equation (DSE) in term of the truncation. We have fitted the Rainbow ladder solution (RL) of the quark DSE with the Qin-Chang interaction on the real axis (p 2 > 0) and simul- taneously the solution on the complex parabola with the same interaction. The fits were made using the well known complex conjugate mass pole parametrization and we will show that the pole locations changes quite a bit. In addition, we will show how the pole locations change when we go beyond the RL truncation.
        Speaker: Fernando Serna (IFT-UNEPS)
      • 18:00
        Applying a ML-EM algorithm to the event reconstruction in NEXT: Performance and early results. 2h
        The NEXT collaboration aims to find the neutrinoless double beta decay in Xe136. The rareness of this decay demands an exceptional background rejection. This can be obtained with an excellent energy resolution, which has been already demonstrated in the NEXT prototypes. In addition to this, the 2ß0ν decay in gas produces a characteristic topological signal which could be an extremely useful extra handle to avoid background events. The need for a satisfactory topology reconstruction has led the NEXT Collaboration to implement the Maximum Likelihood Expectation Maximization method (ML-EM) in the data processing scheme. ML-EM is a generic iterative algorithm for many kinds of inverse problems. Although this method is well known in medical imaging and has been used widely in Positron Emission Tomography, it has never been applied to a time projection chamber. 

After applying it in simulated data of the the DEMO detector with outstanding results, now the collaboration aims to adapt and test the algorithm in the next step of the project: the NEW detector. Early results and performance of the method in NEW will be presented in this poster.
        Speaker: Mr Ander Simón Estévez (IFIC)
      • 18:00
        ATLAS Event Data Organization and I/O Framework Capabilities in Support of Heterogeneous Data Access and Processing Models 2h
        Choices in persistent data models and data organization have significant performance ramifications for data-intensive scientific computing. In experimental high energy physics, organizing file-based event data for efficient per-attribute retrieval may improve the I/O performance of some physics analyses but hamper the performance of processing that requires full-event access. In-file data organization tuned for serial access by a single process may be less suitable for opportunistic sub-file-based processing on distributed computing resources. Unique I/O characteristics of high-performance computing platforms pose additional challenges. This paper describes work in the ATLAS experiment at the Large Hadron Collider to provide an I/O framework and tools for persistent data organization to support an increasingly heterogenous array of data access and processing models.
        Speaker: Jack Cranshaw (Argonne National Laboratory (US))
      • 18:00
        ATLAS jet trigger performance in 2015 data 2h
        The ATLAS experiment at the LHC uses a two-level trigger system to preferentially select events with a predefined topology of interest for future analysis. The hadronic jet trigger is used to select several different topologies containing different types and multiplicities of hadronic jets, thus supporting many different physics searches and measurements. The hadronic jet trigger efficiency for proton-proton collision data at a centre-of-mass energy of 13TeV is presented. The efficient selection of events containing hadronic jets requires the characteristics of trigger-level jets and offline jets to be very similar. A comparison of relevant characteristics demonstrates that trigger-level jets and offline jets are in excellent agreement.
        Speaker: Theodor Christian Herwig (University of Pennsylvania (US))
      • 18:00
        ATLAS Trigger and Data Acquisition Upgrades for High Luminosity LHC 2h
        The ATLAS experiment at CERN is planning a second phase of upgrades to prepare for the "High Luminosity LHC", a 4th major run due to start in 2026. In order to deliver an order of magnitude more data than previous runs, 14 TeV protons will collide with an instantaneous luminosity of 7.5 × 1034 cm−2s−1, resulting in much higher pileup and data rates than the current experiment was designed to handle. While this extreme scenario is essential to realise the physics programme, it is a huge challenge for the detector, trigger, data acquisition and computing. The detector upgrades themselves also present new requirements and opportunities for the trigger and data acquisition system. Initial upgrade designs for the trigger and data acquisition system are shown, including the real time low latency hardware trigger, hardware-based tracking, the high throughput data acquisition system and the commodity hardware and software-based data handling and event filtering. The motivation, overall architecture and expected performance are explained. Some details of the key components are given. Open issues and plans are discussed.
        Speaker: William Keaton Balunas (University of Pennsylvania (US))
      • 18:00
        Background suppression in the JUNO experiment 2h

        The JUNO (Jiangmen Underground Neutrino Observatory) experiment is under preparation in China by the international collaboration. The main goal of the project is to determine the neutrino mass hierarchy by precise measurement of the energy spectrum of the antineutrinos from the nuclear reactors with help of the 20 kt liquid scintillator underground detector located at a distance of 53 km. Data taking should begin in 2020.

        Performance of the JUNO experiment is related to its capability to suppress or at least to control the background processes, which may have the same signature as the antineutrino signal. There are several sources of the background but most dangerous is due to cosmogenic isotopes produced in nuclear spallation processes in cosmic muons interactions.

        The Veto system of the JUNO detector is used for muon detection, muon induced background study and its reduction. It consists of the Top Tracker system and the Water Cherenkov detector. The Water Cherenkov detector is a pool filled with purified water and instrumented with PMTs surrounding the central antineutrino detector. The Top Tracker made of scintillating strips and covering ∼1/3 of the top area with 3 layers has to reconstruct the cosmic muons’ direction. This independent muon information will help muon tagging, track reconstruction and efficiency study to understand and reduce cosmogenic backgrounds.

        Effect of cosmic muons, cosmogenic isotopes, spallation neutrons, and natural radioactivity as well as the design of the Veto system detectors, their performances and the strategy for the background reduction are presented.

        Speaker: Yury Gornushkin (JINR-Dubna)
      • 18:00
        BASIC READOUT ELECTRONIC BOARD FOR THREE CHANNEL COSMIC RAY DETECTOR 2h
        Detection of cosmic rays can be used for teaching and research. The detector and its electronics have a key role in the cosmic ray detection process. It is presented the design, construction and test of a basic readout three channel electronic board for a cosmic ray detector based on three 2.54 cm X 5.08 cm X 20.32 cm Aluminum blocks, and some very preliminary physical results.
        Speaker: Luis Arceo (Universidad de Guanajuato)
      • 18:00
        Belle II early physics program of bottomonia spectroscopy 2h
        The Belle II experiment at the SuperKEKB collider is a major upgrade of KEK B factory facility in Tsukuba, Japan. First beams are planned for early 2016 and first physics data will be recorded in the middle of 2017 during phase 2 commissioning, while the Belle II detector is still missing its vertex detector system. In this talk, we will describe the physics program for this early data, which will focus on bottomonium spectroscopy at different center-of-mass energies, namely at the $\Upsilon(3S)$ and $\Upsilon(6S)$ resonances, amongst other energy points.
        Speaker: Kenkichi Miyabayashi (Nara Women's University, Japan)
      • 18:00
        Boosted Higgs —> bb tagging in ATLAS 2h
        High $p_{T}$ (``boosted'') Higgs bosons decaying into a pair of $b$-quarks are an important signature for many physics searches in Run 2. The reconstruction and identification of such signatures relies mainly on the long-lived nature of the $b$-hadrons arising from the fragmentation of the $b$-quarks. Several advanced Higgs boson tagging techniques are presented here, including the reconstruction of the $b$-hadrons as subjets, the reconstruction of the vertices from the $b$-hadron decays, and the combination of this information into a boosted decision tree (BDT). In addition, new subjet tagging techniques are investigated: the use of variable radius track jets and of exclusive $k_{T}$ calorimeter subjets, as well as a multiple secondary vertex (MSV) algorithm to reconstruct simultaneously the decay chain of both $b$-hadrons. The best performing Higgs boson tagger is found to be a BDT combination of the MSV algorithm and the subjet-based $b$-tagging algorithms.
        Speaker: Nikola Lazar Whallon (University of Washington (US))
      • 18:00
        Building community within the Dark Energy Survey Collaboration: Outreach and Professional Development 2h

        The Dark Energy Survey (DES) Collaboration is an international
        astronomy collaboration of 400 scientists (graduate student to professor) from ~30 institutions. Our public outreach and professional development programs are unique grass-roots efforts that set new standards for large science collaborations. We describe several
        programs in which scientists build networks of internal support, develop connections with local communities, and reach global audiences. We prioritize professional development, diversity and inclusivity, and normalizing science in broad social contexts.

        Speaker: Brian Nord (Fermi National Accelerator Laboratory)
      • 18:00
        C-SPECT, a novel cardiac single-photon emission computed tomography system 2h
        Single-photon emission computed tomography (SPECT) is the leading medical-imaging method of myocardial perfusion, important for the diagnosis and treatment of coronary-artery disease, the number-one killer in the western world. C-SPECT is a proposed novel cardiac SPECT system designed to achieve at least double the geometric efficiency compared to general-purpose dual-head gamma cameras, for the same resolution. This improvement can be used to reduce patient dose or achieve fast or/and dynamic imaging. The system consists of stationary detector modules of pixelated NaI(Tl), a slit-slat collimator with interchangeable slits, and an integrated CT for attenuation correction. The collimator slits provide pinhole collimation in the transverse plane, whereas the slats offer parallel-beam collimation in the axial direction. The adaptive power of the collimator allows us to adjust the sensitivity and resolution depending on the imaging task. This way, superior reconstructed-image resolution can be achieved if the system operates with the usual geometric efficiency of the industry benchmarks. The system gantry wraps around the patient's left-front thorax, and provides a transverse projection minification of ~50%, for a maximal number of non-overlapping projections, given the limitations from the spatial resolution of the pixelated detector. We will present the design principles and preliminary imaging performance using 3D iterative reconstruction with resolution recovery and data from the newly-built laboratory prototype as well as Monte-Carlo simulations of the full system. This work was funded by the National Heart, Lung, and Blood Institute of the National Institutes of Health under grant R01-HL-108119, and utilized resources provided by the Open Science Grid (OSG), which is supported by the National Science Foundation and the U.S. Department of Energy’s Office of Science.
        Speaker: John Strologas (University of Ioannina (GR))
      • 18:00
        CEPC Partial Double Ring Lattice Design and SPPC Lattice Design 2h
        In this paper, we introduced the layout and lattice design of Circular-Electron-Positron-Collider (CEPC) partial double ring (PDR) scheme and the lattice design of Super-Proton-Proton-Collider (SPPC). The baseline design of CEPC is a single beam-pipe electron positron collider, which has to adopt pretzel orbit scheme. And it is not suitable to serve as a high luminosity Z factory besides operated as a Higgs factory. We use separators about 1600 m ahead of IP1 and IP3 to separate the beam and 1600 m after them to recombine the beam to achieve local double ring scheme and crossing angle collision. This scheme has many advantages compared to the single ring scheme and head-on collision which is chosen in CEPC Pre-CDR. We can acquire a higher luminosity with less power consumption, avoid pretzel scheme which requires a rigorous lattice and be suitable to serve as a high luminosity Z factory with more bunches. In this paper, we discussed the details of CEPC partial double ring lattice design, the chromaticity corrected final focus system (FFS) optics and the dynamic aperture study and optimization. We also showed the layout and first version lattice design of SPPC main ring, including ARC, dispersion suppressor sections, IR and long straight sections, especially the low $\beta$ pp collision IR optics.
        Speaker: Feng Su (IHEP,CAS)
      • 18:00
        CEPC partial double ring scheme and crab-waist parameters 2h
        In order to avoid the pretzel orbit, CEPC is proposed to use partial double ring scheme in CDR. In this paper, a general method of how to make an consistant machine parameter design of CEPC with crab waist by using analytical expression of maximum beam-beam tune shift and beamstrahlung beam lifetime started from given IP vertical beta, beam power and other technical limitations was developed. Based on crab waist scheme, we hope to either increase the luminosity with same beam power as Pre-CDR, or reduce the beam power while keeping the same luminosity in Pre-CDR. FFS with crab sextupoles will be developed and the arc lattice will be redesigned to acheive the lower emittance for crab waist scheme.
        Speaker: Dr DOU WANG (IHEP)
      • 18:00
        Characterising LArTPC detector performance with MicroBooNE 2h

        With many current and future neutrino experiments relying on Liquid Argon Time Projection Chamber (LArTPC) technology, characterizing the performance of these detectors is critical. The MicroBooNE LArTPC experiment is capable of performing
        numerous measurements to better understand the technology. These include measurements of the levels of electronegative contamination using cosmic rays and purity monitors as well as electron diffusion and recombination. MicroBooNE, residing on the surface, can also provide useful information about cosmic ray rate and the build up of space charge in the TPC volume. A laser calibration system has been designed and employed to investigate these important effects.

        Speaker: Michael Mooney (BNL)
      • 18:00
        Charged Particle Multiplicity Analysis for Cross Section Measurement with the MicroBooNE Detector 2h

        MicroBooNE is a Liquid Argon Time Projection Chamber (LArTPC)
        located in the Booster Neutrino Beam (BNB) at Fermi National Accelerator
        Laboratory. This poster presents a study on charged particle multiplicity
        (CPM) analysis based on a small sample of automatically and visually
        identified neutrino events in the MicroBooNE detector. Initial comparison
        of multiplicity distributions for data, BNB plus cosmic Monte Carlo (MC),
        and true MC is presented here. Comparison of multiplicity distributions of
        uncorrected data and MC show consistency. Multiplicity distributions of
        corrected scanned and true MC are also in agreement. Fully automated
        reconstruction will be used to proceed with this analysis with the goal of
        testing models of neutrino scattering on argon such as those embedded in
        GENIE and other event generators.

        Speaker: Aleena Rafique (Kansas State University)
      • 18:00
        Charm production nearby threshold in pA-interactions at 70 GeV 2h
        Summary results of the SERP-E-184 experiment at the U-70 accelerator (IHEP, Protvino) are presented. Interactions of 70 GeV proton beam with carbon, silicon and lead targets were studied to detect decays of charmed $D^0$, $\overline D^0$, $D^+$, $D^-$ mesons and $\Lambda _c^+$ baryon nearby their production threshold. The possible modification of the charm properties (the width and/or the mass) nearby phase boundary is expected. Measurements of lifetimes and masses show a good agreement with PDG data. The inclusive cross sections of a charm creation and their A-dependencies are obtained. The yields of these particles are compared to the theoretical predictions and to data of other experiments. The measured total open charm production cross section ($\sigma _{tot} (c\overline c$) = 7.1 ± 2.3(stat) ± 1.4(syst) μb/nucleon) at the collision c.m. energy $\sqrt s$ = 11.8 GeV is well above QCD model predictions. It is shown the contributions of different kinds of charmed particles to the total cross section for open charm production in proton-nucleus interactions vary with energy.
        Speaker: Dr Elena Kokoulina (On behalf of the SVD-2 Collaboration: JINR-IHEP-SINP MSU)
      • 18:00
        CMS Forward Pixel Upgrade Electronics and System Testing 2h
        We will present results of electronics and system testing of the CMS forward pixel (FPIX) detector upgrade for Phase 1. The FPIX detector is comprised of four stand-alone half cylinders, each of which contains frontend readout electronic boards, power regulators, cables and fibers in addition to the active pixel modules. All of the components are undergoing rigorous testing and quality assurance before assembly into the half cylinders. Afterwards, we are performing full system tests on the completely assembled half cylinders, including calibrations at final operating temperatures, characterization of the realistic readout chain, and system grounding and noise studies. The results from all these tests will be discussed.
        Speaker: Hannsjorg Weber (Fermi National Accelerator Lab. (US))
      • 18:00
        Concepts and design of the CMS High Granularity Calorimeter Level 1 Trigger 2h
        The CMS experiment has chosen a novel high granularity calorimeter for the forward region as part of its planned upgrade for the high luminosity LHC. The calorimeter will have fine segmentation in both the transverse and longitudinal directions and will be the first such calorimeter specifically optimised for particle flow reconstruction to operate at a colliding beam experiment. The calorimeter data will form part of the Level 1 trigger of the CMS experiment and, together with the tracking information which will also be available at this level, should allow particle flow techniques to be used as part of this trigger. The trigger has tight contraints on latency and rate and will need to be implemented in hardware. The high granularity results in around six million readout channels in total and so presents a significant challenge in terms of data manipulation and processing for the trigger; the trigger data volumes will be an order of magnitude above those currently handled at CMS. In addition, the high luminosity will result in an average of 140 interactions per bunch crossing that give a huge background rate in the forward region and these will need to be efficiently rejected by the trigger algorithms. Furthermore, reconstruction of the particle clusters to be used for particle flow in events with high hit rates is also a complex computational problem for the trigger. The status of the trigger architecture and design, as well as the concepts for the algorithms needed in order to tackle these major issues, will be presented.
        Speaker: Lindsey Gray (Fermi National Accelerator Lab. (US))
      • 18:00
        Conformal Complex Scalar Singlet Extensions of the Standard Model: Symmetry Breaking Patterns and Phenomenology 2h
        In this talk, we consider a conformal complex singlet extension of the Standard Model with a Higgs portal interaction. Two different scenarios depending on whether the global U(1) symmetry is broken or not have been studied. In the broken phase, including the additional vector-like fermion, we are able to address the recent 750 GeV LHC diphoton excesses. In the unbroken phase, the decay of the complex singlet is protected by the global U(1) symmetry which leads to an ideal cold dark matter candidate. In addition, gauging the global U(1)symmetry, we can construct an asymptotically safe U(1)' leptophobic model. We combine the notion of asymptotic safety with conformal symmetry and use the renormalization group equations as a bridge to connect UV boundary conditions and EW/TeV scale physics. We also provide a detailed example to show one of the boundary conditions may address the LHC diboson anomaly.
        Speaker: Mr Zhi Wei Wang (U of Saskatchewan)
      • 18:00
        Connecting with the science-interested public online 2h
        The Pew Research Center last polled Americans about their interest in keeping up with science news in 2009. In that survey, most Americans expressed at least some interest in following science news, with 35 percent expressing a strong interest and 41 percent expressing some interest. Since then, science has become more and more integrated into popular culture. The popular sitcom *The Big Bang Theory*, which features physicists as main characters, won the People’s Choice Award for best comedy in 2010 and 2013. The 2012 discovery of the Higgs boson at the Large Hadron Collider caught the attention of media around the world. And scientists such as Neil DeGrasse Tyson, Bill Nye and Brian Cox have become pop cultural icons. In the past few years *Symmetry*, a magazine produced by two US national laboratories, has found a growing audience of members of the science-interested public online. Find out how it uses popular, modern and interactive article formats to communicate with that audience about particle physics.
        Speaker: Kathryn Jepsen (SLAC National Accelerator Laboratory)
      • 18:00
        Constraints on the Neutrino Flux in NOvA using the Near Detector Data 2h

        NOvA, a long-baseline neutrino oscillation experiment at Fermilab, is designed to
        measure electron-neutrino appearance and muon-neutrino disappearance in the NuMI beam. NOvA comprises of two finely segmented liquid scintillator detectors at 14 mrad off-axis in the
        NuMI beam. An accurate prediction of the neutrino flux is needed for precision oscillation and cross-section measurements. Data from the hadro-production experiments and, importantly, from the NOvA Near Detector provide powerful constraints on the muon-neutrino
        and electron-neutrino fluxes. In particular, the measurement of the neutrino-electron elastic scattering provides an in situ constraint on the absolute flux. This talk presents the data-driven predictions of the NOvA muon-neutrino and electron-neutrino flux, and outlines future improvements in the flux determination.

        Speaker: Kuldeep Maan (Fermilab)
      • 18:00
        Cosmic Muon induced EM Shower 2h
        The NO$\nu$A experiment is a $\nu_e$ appearance neutrino oscillation experiment at Fermilab. It identifies the $\nu_e$ signal by the electromagnetic (EM) showers induced by the electrons in the final state of neutrino interactions. Cosmic muon induced EM showers, dominated by bremsstrahlung, are abundant in NOνA far detector. We use the Cosmic Muon- Removal technique to get pure shower sample from bremsstrahlung muons in data. We also used Cosmic muon decay in flight (DiF) EM showers which are highly pure EM showers.The large Cosmic-EM sample can be used to characterize the EM signature and provides valuable checks of the MC simulation, reconstruction, PID algorithm, and calibration across the NOνA detector.
        Speaker: Nitin Yadav (Fermilab/IITG)
      • 18:00
        Cylindrical symmetry: An aid to calculating the zeta-function in 3 + 1 dimensional curved space 2h
        The spherically symmetric Schwarzschild solution is a staple of textbooks on general relativity; not so perhaps, the static but cylindrically symmetric ones, though they were obtained almost contemporaneously by H. Weyl, Ann.Phys.Lpz.**54**,117(1917) and T. Levi-Civita, Atti Acc.Lincei Rend. **28** ,101(1919). A renewed interest in this subject recently in C.S. Trendafilova and S.A.Fulling , Eur.J.Phys. **32**,1663(2011) – to which the reader is referred to for more references, motivates this work; to elaborate, we rework the Antonsen-Bormann idea – F.Antonsen and K.Bormann,arXiv:hep-th/9608141v1 – that was originally intended to compute the heat kernel in curved space, to determine – following D.McKeon and T.Sherry, Phys.Rev.D **35**,3584(1987) – the zeta-function associated with the Lagrangian density for a massive real scalar field theory in 3 + 1 dimensional stationary curved space, the metric for which is cylindrically symmetric. As a calculation, it pays to use a metric characterised by the parameters j, k with j = - 4 and k = - 4, j,k being integer solutions to the equation 2(j + k)= - jk . Importantly, this enables – unlike the obvious choice j = 2, k = - 1, an easy evaluation of the momentum integrals implied in the Schwinger expansion for the zeta-function. Happily, the work reported here is easy to go through – relative to that presented by the author at ICHEP2014 with the Schwarzschild metric, and this contrast will be taken up in some detail.
        Speaker: Prof. Gopinath Kamath (Indian Institute of Technology Tirupati,Tirupati 517506,India)
      • 18:00
        Dark matter in scale invariant extension of the standard model with strongly interacting hidden sector 2h
        We analyze the scale-invariant extension of the standard model (SM) with a strongly interacting hidden sector by using AdS/QCD. Using AdS/QCD, we can reduce the number of input parameters to three, i.e., hidden pion decay constant, hidden pion mass and tan β that is defined as the ratio of the vaccum expectation values of the singlet scalar field and the SM Higgs boson. As a result, our model has sharp predictibility. We perform the phenomenological analysis of the hidden pions, that is the dark matter (DM) candidates in the model. With various theoretical and experimental constraints we search for the allowed parameter space and find that both resonance and nonresonance solutions are possible. Some typical correlations among various observables such as relic denstiy, Higgs signal strength and DM-nucleon cross section are scrutinzed. We provide some benchmark points for experimental tests.
        Speaker: Dong-Won Jung (Korea University)
      • 18:00
        Dense Axion Stars 2h
        Axions are described by a relativistic field theory with a real scalar field whose self-interaction potential is periodic. Low energy axions can be described more simply by a nonrelativistic effective field theory with a complex scalar field called $\textit{axion EFT}$. An axion stars is a gravitationally bound collection of axions. We use axion EFT to calculate the properties of a new class of axion stars called $\textit{dense axion stars}$, in which the attractive gravitational force is balanced by the mean-field pressure of the axion Bose-Einstein condensate.
        Speaker: Eric Braaten (Ohio State University)
      • 18:00
        Design and performance of the signal processing and DAQ network of the CULTASK axion search experiment 2h
        CULTASK is an experiment to search for the cosmic axions using resonant cavities, to detect photons in the 1-8 GHz range from axion conversion in a very high magnetic field and at an ultra low temperature due to the inverse Primakoff effect. The postulated power of these signal is very weak in the order of $10^{-24}$ W, therefore, a signal processing network was carefully designed in order to detect these signal with a high signal-to-noise ratio. The basic principle of the signal processing employs an RF transceiver with direct down-conversion to baseband and a fast digitizer to read the amplified signal in real time for further offline Fourier transformation. The performance of cryogenic amplifier chain, room temperature signal processing and the feasibility to use digitization with Fourier transform compared with employing spectrum analyzer will be presented.
        Speaker: MyeongJae Lee (Institute for Basic Science (Korea))
      • 18:00
        Design of the HiLumi-LHC Triplet Area Beam Screen 2h
        In the framework of the high luminosity large hadron collider (HL-LHC) project, important upgrades will take place by 2024 including the installation of new superconducting magnets in which new beam screens will be placed. The beam screen is an octagonally shaped pipe inserted into the cold bore of superconducting quadrupoles a few tens of meters from the proton beam interaction points (ATLAS and CMS). It ensures vacuum stability by means of small holes along its uncovered surfaces, and shields the 1.9 K magnet cryogenic system from the heat loads and damage to the coils that would be otherwise induced by the highly penetrating collision debris. This is obtained by dense tungsten blocks placed on four of the flat surfaces of the screen. The remaining surfaces accommodate four cooling capillaries whose purpose is to transfer the heat absorbed by the tungsten to the capillaries through highly conductive thermal links. The main subject of this study concerns the investigation of the magnetic, thermal, and mechanical behaviours of the beam screen during an LHC worst-case scenario, namely, a magnet quench. In this case, the beam screen has to guarantee its mechanical integrity to ensure vacuum and thermal stability. A numerical FEM (Finite Element Method) model has been developed to quantify the eddy currents and the resulting Lorentz forces induced by the rapid quadrupole magnetic field decay (from 140 to about 0 T/m in 0.4 sec). As these forces greatly depend on the electrical conductivity of the material which in turn depends on temperature, thermal analyses have taken into account the change of material conductivities as well as the temperature increase due to resistive losses. Therefore, the multiphysics nature of the phenomenon calls for a fully coupled model where electro-magnetic, thermal and mechanical effects could interact simultaneously in a unique Jacobian matrix during each sub-step of the quench. Since the induced forces turn out to be considerable (peaks equal to 310 N/mm) some of the most important outcomes of the model are the assessment of the equivalent stress and displacement of all the assembly components. They, in fact, have to stay within certain safety values to protect the magnet coils in the vicinity of the cold bore, and the assembly itself. A beam screen prototype has already been manufactured according to the main results of the simulations. This will help validate the numerical models since an ad-hoc magnet quench set up has been envisaged to take place in mid-2016. Research supported by the High Luminosity LHC project.
        Speaker: Marco Morrone (Imperial College Sci., Tech. & Med. (GB))
      • 18:00
        Design of the PROSPECT Experiment 2h
        PROSPECT is a multi-phased reactor antineutrino experiment with primary goals of making a precise measurement of the $^{235}$U reactor antineutrino spectrum and performing a search for sterile neutrinos. The detectors will be deployed at short baselines of $\sim$ 7-19m from the High Flux Isotope Reactor at Oak Ridge National Laboratory. In addition to being optimally located to search for oscillations arising from $\Delta$ m$^2 \sim$1eV$^2$ sterile neutrinos, the short distance of the detector from the reactor provides a large $\overline{\nu}_{e}$ flux from the reactor core. However, the close proximity also poses challenges such as constraints on space, lack of overburden and backgrounds from the reactor. Therefore, the detector must be designed to have excellent background rejection capabilities, along with good position and energy resolution, to meet the physics goals of the experiment. PROSPECT's use of segmented $^6$Li-loaded liquid scintillator detector target enables the achievement of these varied requirements. In this poster, we give a detailed description of the experimental strategy of PROSPECT, the PROSPECT detector design, and supporting R\&D activities.
        Speaker: Pranava Teja Surukuchi (Illinois Institute of Technology)
      • 18:00
        DESIGN, CONSTRUCTION, AND OPERATION OF SMALL COSMIC RAYS DETECTORS AT UNIVERSIDAD DE GUANAJUATO, MEXICO 2h
        Since 30 years ago Universidad de Guanajuato students and professors have participated in many international experimental high Energy physics collaborations, working at Fermilab USA, mainly [1]. Slow progress, and a tendency to impoverish, has observed in the development of this area of science in Mexico. We have disregarded the scientific and technological development of Mexico, preparing students, and collaborating, outside. Graduate students do not contribute to the economical and technological development of Mexico, and private industry does not participate. To remediate this situation and improve the level of science and technology in Mexico, we have created the Laboratory for elementary particles (laboratorio de partículas elementales [2]). Here students of the three levels –BSc, Master, and PhD in physics- design, construct, calibrate and operate small cosmic rays detectors. Some equipment local vendors, and small enterprises, participate. We consider that this new way of proceeding will benefit the scientific relations with international collaborations, improve the scientific and technological preparation of students, force the participation of local industry, and contribute to the economical development of Mexico. We present this strategy in some detail, some physical results obtained with the constructed equipment, and some conclusions. 1. http://www.symmetrymagazine.org/article/march-2014/30-years-of-inter-american-collaboration 2. http://laboratoriodeparticulaselementales.blogspot.mx/ Acknowledgements. To the students who participate regularly in the Laboratorio de Partículas Elementales de la DCeI, CL. Universidad de Guanajuato: Francisco Javier Rosas-Torres, Jazmín Sánchez-Sánchez, Miguel Ángel Hernández-Morquecho, Karla Natalia Herrera-Guzmán, Raúl Alejandro Gutiérrez-Sánchez, Oscar Eduardo Moreno-Palacios, Everardo Granados-Vázquez, Jordán de Jesús Ortiz-Villanueva, Gerardo de Jesús Rodríguez-Becerra, Carlos Andrés Cervantes-Vera, Diego Armando Andrade-Aldana, Alfredo Martínez-Vega, Luis Jorge Arceo-Miquel, Aurora Cecilia Araujo-Martínez. Miguel Antonio Pérez-Pichardo , Luis Eduardo Ortega-Cuellar, José Iván Aguilar-Ortiz.
        Speaker: Julian Felix (Universidad de Guanajuato)
      • 18:00
        Detection prospects for conformally constrained vector-portal dark matter 2h
        We work with a UV conformally complete U(1)' extension of the Standard Model, motivated by the hierarchy problem and recent collider anomalies. This model admits fermionic vector portal WIMP dark matter charged under the U(1)' gauge group. The conformal boundary conditions can be used to fix the coupling parameters, which allows the observed thermal relic abundance to constrain the mass of the dark matter particle. This highly restricts the parameter space, allowing strong predictions to be made. The parameter space of several conformal U(1)' scenarios will be explored, and both bounds and possible signals from direct and indirect detection observation methods will be discussed.
        Speaker: Mr Frederick Sage (University of Saskatchewan)
      • 18:00
        Detector Considerations for a Southern Hemisphere HAWC Experiment 2h
        The High-Altitude Water Cherenkov (HAWC) observatory in central Mexico is currently the world's only synoptic survey instrument for gamma rays above 1 TeV. Because there is significant interest in covering the full TeV gamma-ray sky with a survey instrument, we have examined options for a Southern Hemisphere counterpart to HAWC. In addition to providing all-sky coverage of TeV sources, a southern site would complement existing surveys of the densest part of the Galactic Plane, provide continuous monitoring of Galactic and extragalactic transient sources in both Hemispheres, and simplify the analysis of spatially extended signals such as diffuse gamma rays and the TeV-PeV cosmic-ray anisotropy. To take advantage of the air-shower physics and lower the energy threshold of the experiment as much as possible, a high altitude site above 5000 m a.s.l (vs. 4100 m a.s.l. at the current site in Mexico) is especially interesting. To facilitate efficient detector construction at such altitudes, the detector tanks would be assembled at lower altitude and delivered to the site. An all-digital communications and data acquisition scheme is proposed. Possible designs include taking advantage of digital optical module technology from the IceCube experiment as well as new custom electronics. We discuss the physics potential of such an experiment, focusing on the energy threshold, angular resolution, and background suppression capability of the experiment, as well as the advantages of full-sky coverage above 1 TeV.
        Speaker: Michael DuVernois (University of Wisconsin--Madison)
      • 18:00
        Detector's picosecond timing 2h
        Results of the study of timing properties of silicon photomultipliers, micro channel plates, silicon, etc. presented. The measurements were performed at Silicon Detector laboratory and Fermilab Test Beam Facility. The measured time resolution of the detectors is in the range of few picosecond up to few tens picosecond.
        Speaker: Dr Anatoly Ronzhin (Fermi National Accelerator Laboratory)
      • 18:00
        Detectors for Superboosted Jet Substructure at Future Circular Colliders 2h
        We study detector performance of jet substructure variables for extremely boosted objects at very high energy proton colliders. We study hadronically-decaying W bosons with transverse momentum in the multi-TeV range. Calorimeter detectors are benchmarked in various configurations in order to understand the impact of granularity and resolution on boosted boson discrimination.
        Speaker: Nhan Viet Tran (Fermi National Accelerator Lab. (US))
      • 18:00
        Detectors for Superboosted tau-leptons at Future Circular Colliders 2h
        We study detector performance of tau-lepton identification variables at very high energy proton colliders. We study hadronically-decaying tau-leptons with transverse momentum in the TeV range. Calorimeters are benchmarked in various configurations in order to understand the impact of granularity and resolution on boosted tau-lepton discrimination.
        Speaker: Sourav Sen (Duke University (US))
      • 18:00
        Development of solar blind UV extended Avalanche photodiode (APD) for the readout of Barium Floride crystals 2h

        BaF$_2$ calorimeters are radiation-hard and have good energy resolution, but the time resolution can be a problem at high rate. Indeed, the scintillation light has both a fast (decay time 0.9 ns at 220 nm) and a larger, slow (decay time 650 ns at 300 nm) component. The slow component can worsen the excellent time resolution available from the fast component.

        In order to take advantage of the very fast scintillation component, it is necessary to have a
        fast photosensor with high efficiency in the UV-region that is also
        able to discriminate against the slow scintillation component.

        A Caltech/JPL/RMD consortium has been formed to develop a modified
        RMD large area APD into a delta-doped superlattice APD.
        This device incorporates an atomic layer deposition antireflection
        filter that will provide 60 % quantum efficiency at 220 nm
        and 0.1 % efficiency at 300 nm to take full advantage
        of the fast decay time component of BaF$_2$ while suppressing the slow one.

        To cope with the higher rate expected for the Mu2e experiment upgrade and to reject pileup events,
        This sensor will make possible to build a radiation-hard and extremely
        fast BaF$_2$ based calorimeter having good energy and time resolution
        and an extreme high rate capability that can cope with the
        increased rates expected at upgrades for Mu2e or other experiments
        with similar demands.

        Speaker: Prof. David Hitlin (Caltech, USA)
      • 18:00
        Development of a timing detector for the TOTEM experiment at the LHC 2h
        The upgrade program of the TOTEM experiment foresees the installation of timing detectors inside vertical Roman Pots to allow the reconstruction of the longitudinal vertex position in presence of event pile-up in high $\beta^{*}$ dedicated runs. The small available space inside the Roman Pot and the required time resolution led to the study of a solution using single crystal CVD diamonds. The sensors are read out using fast low-noise front-end electronics developed by the TOTEM Collaboration, achieving a signal-to-noise ratio larger than 20 for MIPs. A prototype was designed, manufactured and tested during a test beam campaign, proving a time resolution below 100 ps and an efficiency above 99%. The geometry of the detector has been designed to guarantee a uniform occupancy in the expected run conditions keeping, at the same time, the number of channels below ten. In fact, each detector uses four diamond crystals of $4.5~\times~4.5~\rm{mm^2}$: one is segmented in four pixels, another in two, while the remaining pair is metallized with a single electrode. The detectors are read out using the SAMPIC chip, a fast sampler designed specifically for picosecond timing measurements with high rate capabilities. Four aligned detectors will be installed in each Roman Pot to achieve a final resolution below 50 ps. The first set of prototypes was successfully installed and tested in the LHC in November 2015.
        Speaker: Nicola Minafra (Universita e INFN, Bari (IT))
      • 18:00
        Development of Belle-II TOP detector and its MCP-PMT 2h
        We have been developing a Cherenkov ring-imaging detector as a barrel particle identification device, named TOP (Time-Of-Propagation), for the Belle-II experiment. In this presentation, we will show the overview of TOP detector, the production results and focus on the MCP-PMT development and its improved performance. We have successfully produced the detector modules, which consist of the 2.7m long quartz radiator, supporting mechanics, MCP-PMTs and readout electronics, by developing many tools and method. Along with the construction, we also have developed the lifetime-improved MCP-PMT with Hamamatsu photonics, to keep the performance for long period even under higher background environment than the expected rate at SuperKEKB. We adopted the ALD technique to the micro-channel-plate and applied further improvement at the production step, then the mass production for the TOP detector was successfully done. We will present the obtained performance of the MCP-PMTs for the gain, time resolution, quantum efficiency and the lifetime.
        Speaker: Kenji Inami (Nagoya university)
      • 18:00
        Development of the Short-Baseline Near Detector (SBND) 2h

        SBND (Short-Baseline Near Detector) will be a 112 ton liquid argon TPC neutrino detector located 110m from the target of the Fermilab Booster Neutrino Beam. SBND, together with the MicroBooNE and ICARUS-T600 detectors at 470m and 600m, respectively, make up the Fermilab Short-Baseline Neutrino (SBN) Program. SBN will search for new physics in the neutrino sector by testing the sterile neutrino hypothesis in the 1 $eV^2$ mass-squared region with unrivaled sensitivity. The SBND plays an important role in an on-going R&D effort within neutrino physics to develop the LArTPC technology toward many-kiloton-scale detectors for next generation long-baseline neutrino oscillation experiments. In this poster the development of the SBND detector will be presented.

        Speaker: Matthew Bass (University of Oxford)
      • 18:00
        Differential jet mass measurement 2h
        The differential cross sections of dijet and V+jet events with respect to the jet mass is presented. The cross section is presented with respect to the bare jet mass, as well as with grooming applied with the modified mass drop tagger.
        Speaker: Joseph Pusztay (State University of New York at Buffalo CMS (US))
      • 18:00
        Diffusion Coefficient with higher order gravity corrections in the Soft-Wall Model of Holographic QCD 2h
        We study the Renormalization Group (RG) flow of transport properties by holographic QCD. Diffusion constant and shear viscosity at the cut-off have been calculated in the soft wall model including the Gauss-Bonnet (GB) couplings in the gravity. An explicit relation between the two has been shown for Einstein–Maxwell system first and then with gauss- bonnet corrections in the soft wall approach.
        Speaker: NEHA BHATNAGAR (BANARAS HINDU UNIVERSITY)
      • 18:00
        Directional Liquid Scintillator Detector for Neutrinoless Double-Beta Decay 2h
        In a liquid scintillator detector electrons from $0\nu\beta\beta$-decay often exceed Cherenkov threshold. Selection of early photons using fast photo-detectors separates prompt directional Cherenkov light from delayed isotropic scintillation light. This leads to the possibility of reconstructing the event topology of $0\nu\beta\beta$-decay candidate events by analyzing spatial and timing distribution of early photons. Using a simulation of a 6.5 m radius liquid scintillator detector with 100 ps resolution photo-detectors, we present a technique for separating $0\nu\beta\beta$-decay events from background due to $^8$B solar neutrino interactions and $^{10}$C decays. These represent key backgrounds at deep and shallow detector sites. We separate $0\nu\beta\beta$-decay and $^8$B events by comparing the event topologies using a spherical harmonics analysis of the early light emitted in each candidate event. $^{10}$C events can be identified by comparing photons arrival time distributions. Since 98% of $^{10}$C decays through an excited state of $^{10}$B(718), which has a half-life time of $\sim$1 ns, the majority of $^{10}$C events have a prompt positron accompanied by a delayed 0.718 MeV gamma that diminishes the amount of early light compared to signal events.
        Speaker: Andrey Elagin (University of Chicago)
      • 18:00
        Education and outreach through ATLAS lego and events 2h
        To support the outreach activities of Atlas institutes and to grab people's attention in science exhibitions and during public events, we have created both a very detailed model of the experiment built entirely out of about Lego bricks as well as an outreach programme using Lego bricks to get people to think about particle detectors and involve them into a conversation about particle physics in general. A large Lego model, consisting of about 9500 pieces, has been 'exported' to more than 55 Atlas institutes and has been used in numerous exhibitions to explain the proportion and composition of the experiment to the public. As part of 'Build Your Own Particle Detector' programme (byopd.org) we conducted more than 15 events,either involving a competition to design and build the 'best' particle detector from a random pile of pieces or to take part in the construction of one of the large models, as part of a full day outreach event. Recently we've added miniature models of all four LHC experiments, that will be used at various outreach events in the future. The talk will introduce the basic concept of the project, provide a recipe to conduct your own event and give and overview of ideas to extend the effort.
        Speaker: Sascha Mehlhase (Ludwig-Maximilians-Univ. Muenchen (DE))
      • 18:00
        Effective Actions with the First Order Form of Gauge Theories 2h
        The first order form of the Einstein-Hilbert action is shown to reduce the number of vertices needed to compute Feynman diagrams to just three three-point ones; in addition there are two propagating fields. This simplified set of Feynman rules can be used to derive the same results as the usual second order form of the Einstein-Hilbert action. We also consider the contributions to the effective action of the graviton in a thermal background.
        Speaker: Fernando Brandt (Universidade de São Paulo)
      • 18:00
        Electromagnetic Properties of a Hot and Dense Medium 2h
        We study the properties of an electromagnetically interacting medium in the presence of high concentration of electrons at extremely high temperatures and chemical potentials. We show that the electromagnetic properties of the medium such as the electric permittivity, magnetic permeability, magnetic moments and the propagation speed of electromagnetic waves as well as the corresponding particle processes depend on the temperature and density of the medium. Electromagnetic properties of neutrinos are significantly modified when they propagate through such a medium of hot and dense electrons due to their interactions with electrons.
        Speaker: Prof. Samina Masood (University of Houston Clear Lake)
      • 18:00
        Electron and photon energy measurement calibration with the ATLAS detector 2h
        An accurate calibration of the energy measurement of electron and photon is paramount for many ATLAS physics analysis. The calibration of the energy measurement is performed in-situ using a large statistics of Z->ee events. A pre-requisite of this calibration is a good understanding of the material in front of the calorimeter and of the inter-calibration of the different calorimeter layers. Z->ee events are also employed to measure the energy resolution. The results obtained with the pp collisions data recorded in 2015 at sqrt(s)= 13 TeV, corresponding to an integrated luminosity of 3.2 fb-1, as well as the corresponding uncertainties on the electron and photon energy scales, are presented.
        Speaker: Stefano Manzoni (Università degli Studi e INFN Milano (IT), LPNHE Paris)
      • 18:00
        Electron cloud trapping in combined function dipole magnets 2h
        Electron cloud can lead to a fast instability in intense proton and positron beams in circular accelerators. We demonstrate that electron cloud can be trapped in a combined function magnet. We present the results of analytical estimates, and compare them to numerical simulations of electron cloud formation. In a combined function magnet the electron cloud is located at the beam center and the ratio of trapped particles can be as high as 1%. Since the process of electron cloud build-up is exponential, once trapped this amount of electrons significantly decreases the time of build-up on the next revolution. The trapping creates a mechanism for the beam to act on itself on the next turn and can lead to a head-tail instability.
        Speaker: Sergey Antipov (University of Chicago)
      • 18:00
        Electroweak boson production and searches for aQGC in CMS 2h

        The study of electroweak boson production is an important part of
        characterizing the standard model and it can also shed a light on new
        physics, in the form of anomalous gauge couplings. We present studies
        based on the measurement of WW scattering, the electroweak production
        of Z gamma + 2 jets and the study of gamma gamma->WW through the
        exclusive WW production performed by the CMS collaboration using 8TeV
        proton-proton collisions at the LHC. With this set of analyses CMS
        has set upper limits on the values of aQGC coefficients for both
        dimension-6 and dimension-8 effective field theory operators, with
        exclusive gamma gamma -> WW giving the most stringent limits to date.

        Speaker: Clemencia Mora Herrera (Universidade do Estado do Rio de Janeiro (BR))
      • 18:00
        Emittance Measurement in Muon Ionization Cooling Experiment 2h
        The goal of the international Muon Ionization Cooling Experiment (MICE) is to demonstrate transverse emittance reduction of a muon beam using a lattice cell that could be a component of a Neutrino Factory and a Muon Collider. In MICE Step IV configuration, the muon beam passes through a low-Z absorber material for reducing its transverse emittance through ionization energy loss and the position and momentum of individual muons are reconstructed inside two scintillating fiber tracking detectors, upstream and downstream of the absorber for measuring the transverse emittance to about 0.1% accuracy. Two spectrometer solenoid modules each made of five superconducting coils house the two trackers. Three coils of each spectrometer are responsible for producing uniform magnetic field at the locations of trackers and the two other coils for matching the beam entering and leaving the absorber. However, due to existence of non-linear effects in the beam optics, transverse emittance growth can be observed and therefore it is important to develop algorithms which can prevent this apparent emittance growth. A review of emittance measurement techniques in MICE including emittance exchange and other analysis tool sets for measuring the phase space volume of MICE muon beam will be presented.
        Speaker: Victoria Blackmore (Imperial College London)
      • 18:00
        Evaluating the Muon g-2 calorimeters as a beam diagnostic tool 2h
        The Muon g-2 experiment at Fermilab will measure the anomalous magnetic moment of the muon to a precision of 0.14 parts per million. The measurement will rely on detailed knowledge of the muon beam profile in the storage ring. A suite of 24 segmented lead-fluoride calorimeters will provide energy, time, and position information about the decay positrons. Calorimeter data will primarily be used to determine the muon spin precession frequency, but will also provide measurements essential to controlling systematic uncertainties related to distortion of the closed orbit, betatron tunes, and knowledge of the beam energy and energy spread. Three tracking detectors and two fiber beam monitors will also provide beam information; the calorimeters have the advantage of being located every 15 degrees around the entire ring. Furthermore, while the fiber beam monitors will only be used during beam commissioning, the calorimeters will always be active, and will help us monitor the beam on a run-by-run basis. We use beam and detector simulations to develop algorithms for extracting muon beam parameters from calorimeter data.
        Speaker: Robin Bjorkquist (Cornell University)
      • 18:00
        Excessive double strange baryon production due to strangeness oscillation in p+A and A+A collisions 2h
        Production of double-strange $\Xi^-$ baryons at sub-threshold energies has been observed (by HADES experiment) to be unexpectedly enhanced, compared to theoretical estimates. We suggest, oscillation of neutral kaons can be affected due to high baryonic density in a specific way, which may result in the oscillation length 5-10 fm. This allows for the strangeness violation process $K^0(\bar s d) \rightarrow \bar K^0(s, \bar d)$ to occur within the volume of dense hadronic medium, and additional double strange baryons can be created via $(\Sigma^0, \Lambda) + \bar K^0$ strangeness exchange interactions. The significance of this process is not accounted for properly, if global strangeness conservation in proton-nucleus and nucleus-nucleus collisions is assumed.
        Speaker: Peter Filip (Slovak Academy of Sciences (SK))
      • 18:00
        Exploring Raw HEP Data using Deep Neural Networks at NERSC 2h
        High Energy Physics has made use of machine-learning approaches such as artificial neural networks for some time. Recently however there has been considerable development of these techniques outside the HEP community, particularly in deep neural networks for the purposes of image recognition. In this work, we describe a deep-learning analysis pipeline, developed at NERSC, capable of revealing meaningful physical content by transforming the raw data from particle physics experiments into a learned high-level representation using deep convolutional neural networks, including in an unsupervised mode where no input physics knowledge or training data is used. We demonstrate this pipeline operating on raw data from current particle physics experiments, including the Daya Bay Neutrino Experiment. Furthermore we show how supervised convolutional deep neural networks can provide an effective classification filter with, in the Daya Bay case, greater than 97% accuracy across different classes of physics events, significantly better than other machine learning approaches. Such pipelines have significant applications for use in other experiments triggers, data quality monitoring or physics analyses.
        Speakers: Mr Evan Racah (Lawrence Berkeley National Laboratory), Wahid Bhimji (Lawrence Berkeley National Lab. (US))
      • 18:00
        Exploring the Masses of Exotic Heavy Pentaquarks 2h
        After the recent discovery of charmed pentaquarks $P_c^*$ (4380) and, $P_c^*$ (4450) [1] quick search has been set in for other pentaquarks. In the present work, the masses of the cryptoexotic pentaquarks with hidden beauty $P_b^*$ ($uudb\bar{b}$), and strangeness $P_s^*$ ($uuds\bar{s}$) have been estimated considering a di-hadronic state consisting of a meson and a baryon. In addition to this, other exotic heavy pentaquarks such as, $\Theta_c^0$($uudd\bar{c}$), $\Theta_b^{+}$($uudd\bar{b}$), $\Theta_{cs}^{++}$ ($cuud\bar{s})$, $\Theta_{bs}^{+}$ ($buud\bar{s}$) and related family members have been probed. The results agree well with the existing literature [2]. The interaction between the meson and the baryon, i.e., the residual interaction of the confined gluons has been taken to be Van der Waals’ type of molecular interaction $V(r_{12})=-(K_{mol}/r_{12})\exp(-c^2 r_{12}^2/2)$ , where, $K_{mol}$ is the residual strength of the strong interaction molecular coupling, $c$ is the effective color screening of the confined gluons. The mass formula for calculating the heavy pentaquark masses now stands out to be, \begin{equation} M_ {pentaquark} = M_{meson} + M_{baryon} + E_{BE}+ E_{SD} \end{equation} Here, $E_{BE}$ and $E_{SD}$ represent the binding energy and the hyperfine spin interaction of the system, which are being estimated in the present work following the prescription of a statistical model, and are given by, $ E_{BE} = \frac{2.25 K_{mol}}{r_{12}} \left [_{2}F_2(1.5,1.0),(2.75,2.25), -\beta \right ] $, with $\beta=c^2r_{12}^2/2$, and Re$\beta >0$, and $ E_{SD} = \frac{8}{9} \frac{\alpha_s}{M_{meson} M_{baryon}} (\vec{S_1}.\vec{S_2}) |\psi_0|^2 $. Here, $\alpha_s$ is the strong interaction constant, taken to be equal to 0.59. $K_{mol}=0.65$, and $c=50$ MeV [3]. The masses of the cryptoexotic pentaquarks, as estimated in our calculation, are given for $P_b^*$(1) , $P_b^*$(2) , $P_s^*$(1) , and $P_s^*$(2) are 10.638, 10.881, 2.110, and 2.381 GeV respectively. The masses of $\Theta_c^0$ , $N_c^0$ , $\Xi_c^0$ , $\Theta_{cs}^{++}$, $\Theta_b^+$, $N_b^+$, $\Xi_b^+$, and $\Theta_{bs}^+$ have been estimated as, 2.656, 2.752, 2.905, 2.752, 6.043, 6.127, 6.366, and 6.128 GeV respectively. The reported values for the masses of these exotic pentaquarks may inspire furute experiments. References: [1] R. Aaij et al, (LHCb Collab.), Phys. Rev. Lett. 115 (2015), 072001. [2] D. Diakonov, arXiv hep-ph/1003.2157; V. Kopeliovich et al, arXiv hep-ph/1510.05958; R. Jaffe et al, Phys. Rev. Lett. 91 (2003), 232003; M. Karliner et al, arXiv hep-ph/1030.7343. [3] B. Chakrabarti et al, Phys. Scr. 79 (2009), 025103.
        Speaker: Dr Ballari Chakrabarti (Jogamaya Devi College, Kolkata, India)
      • 18:00
        Exploring the squark flavour structure of the MSSM 2h
        We analyse the impact of non-minimally flavour violating (NMFV) terms in the Lagrangian of the Minimal Supersymmetric Standard Model (MSSM) at the TeV scale on signatures related to squarks at the LHC. We begin with an extensive study of the corresponding parameter space by means of a Markov Chain Monte Carlo (MCMC) setup. This represents the first study of several non-zero NMFV elements in the MSSM. We present the results of this study with a special focus on the flavour-violating parameters and related observables at the LHC. Based on these results, we define benchmark points for future studies of NMFV effects at the LHC [JHEP 1511 (2015) 125]. We then discuss possibilities how to disentangle minimal and non-minimal flavour violation in Supersymmetry assuming the observation of squarks at the LHC. The reconstruction of the squark flavour sector from observed LHC event rates might rule out the MFV paradigm [work in progress]. We finally discuss the decay of a stop squark into a charm quark and a neutralino. This channel arises at the tree-level when allowing for the appropriate NMFV terms, and is therefore an interesting process to confront MFV and NMFV [work in progress].
        Speaker: Dr Bjorn Herrmann (Unite Reseaux du CNRS (FR))
      • 18:00
        Extrapolation, Systematics and Results for the NOvA Disappearance Analysis 2h
        The NO$\nu$A experiment is a long-baseline, off-axis, two-detector neutrino-oscillation experiment using the NuMI beam at Fermilab. The disappearance analysis measures oscillation of the muon-neutrino beam and is sensitive to the neutrino mixing angle $\theta_{23}$ and mass splitting $\Delta m^{2}_{32}$. This poster presents the method used to generate predicted far-detector energy spectra based on extrapolation of near-detector observations, accounting for flux and acceptance differences between the detectors. Varying the inputs to the extrapolation allows estimation of the effect of various systematic uncertainties on the far detector prediction. Because the detectors are of similar construction and are placed at similar angles from the beam axis, there is significant cancellation of systematic error. Finally, oscillation results based far detector observations are presented.
        Speaker: Joseph Lozier (California Institute of Technology)
      • 18:00
        First attempt to search for H+ to cbbar in top quark decays at CMS 2h
        The first result of searching for a light charged Higgs decaying to cb-bar in 8 TeV CMS data corresponding to 19.7/fb is reported. When the charged Higgs has lighter mass than the top quark mass and strongly couples to the top quark, thereby it is expected to be found in the top quark decays. The cb-bar decay has been of interest by theorist since the hadronic channel of the charged Higgs was performed. This decay mode is enhanced particularly in the Type-Y(flipped) of the 2HDM. Exploiting high purity of ttbar in the lepton+four jets channel, one top with leptonic W decay and a b-jet is taken to be the normal SM top quark decay, and the other top quark decays to a b-jet and two jets. If both top quarks decay to W and b quark in the SM, the di-jet mass distribution would have only one peak at W boson mass. However, charged Higgs, assuming B(H+ to cbbar) = 1, in top quark decays would make a second peak over the W mass. One more b quark in the charged Higgs signal is used to increase the search sensitivity by using both di-jet mass distributions in 2 b-tags and 3 b-tags simultaneously.
        Speaker: Geum Bong Yu (Seoul National University (KR))
      • 18:00
        First results from a beam test of a high-granularity silicon-based calorimeter for CMS at HL-LHC 2h
        Calorimetry at the High Luminosity LHC (HL-LHC) faces two enormous challenges, particularly in the forward direction: radiation tolerance and unprecedented in-time event pileup. To meet these challenges, the CMS experiment has decided to construct a High Granularity Calorimeter (HGCAL), featuring a previously unrealized transverse and longitudinal segmentation, for both electromagnetic and hadronic compartments. This will facilitate particle-flow-type calorimetry, where the fine structure of showers can be measured and used to enhance particle identification, energy resolution and pileup rejection. The majority of the HGCAL will be based on robust and cost-effective hexagonal silicon sensors with ~1cm^2 or 0.5cm^2 hexagonal cell size, with the final 5 interaction lengths of the hadronic compartment being based on highly segmented plastic scintillator with on-scintillator SiPM readout. A silicon-based 28-layer prototype using copper and tungsten as absorber materials (totalling 26 radiation lengths), has been constructed and tested in beams at FNAL. The prototype includes many of the features required for this challenging detector, including a complex PCB glued directly to the sensor, using through-hole wire-bonding for signal readout and ~5mm gaps between layers. The mechanics of the prototype allows these gaps to be varied, in order to study performance variations and therefore optimize the final detector design. Beams of electrons and pions up to 66 GeV have allowed measurements on basic calorimetric performance, including noise, calibration, energy linearity and resolution.
        Speaker: Rajdeep Mohan Chatterjee (University of Minnesota (US))
      • 18:00
        First-order cosmological perturbations engendered by point-like masses: all scales covered 2h
        In the framework of the concordance cosmological model the first-order scalar and vector perturbations of the homogeneous background are derived without any supplementary approximations in addition to the weak gravitational field limit. The sources of these perturbations (inhomogeneities) are presented in the discrete form of a system of separate point-like gravitating masses. The obtained expressions for the metric corrections are valid at all (sub-horizon and super-horizon) scales and converge in all points except the locations of the sources, and their average values are zero (thus, first-order backreaction effects are absent). Both the Minkowski background limit and the Newtonian cosmological approximation are reached under certain well-defined conditions. An important feature of the velocity-independent part of the scalar perturbation is revealed: up to an additive constant it represents a sum of Yukawa potentials produced by inhomogeneities with the same finite time-dependent Yukawa interaction range. The suggesting itself connection between this range and the homogeneity scale is briefly discussed along with other possible physical implications.
        Speaker: Dr Maxim Eingorn
      • 18:00
        Flavour tagging of $b$-mesons in $pp$ collisions at LHCb 2h
        Flavour tagging, i.e. the inference of the production flavour of reconstructed $b$-hadrons, is essential for precision measurements of decay time-dependent CP violation and of mixing parameters in the the neutral $B$ meson systems. LHC's $pp$ collisions with their high track multiplicities constitute a challenging environment for flavour tagging and demand for new and improved strategies. We present recent progress and new developments in flavour tagging at the LHCb experiment, which will allow for a further improvement of CP violation measurements in decays of $B^0$ and $B_s^0$ mesons.
        Speaker: Vanessa Mueller (Technische Universitaet Dortmund (DE))
      • 18:00
        Fragmentation contributions to hadroproduction of prompt $J/\psi$, $\chi_{cJ}$, and $\psi(2S)$ states 2h
        We compute fragmentation corrections to hadroproduction of the quarkonium states $J/\psi$, $\chi_{cJ}$, and $\psi(2S)$ at leading power in $m_c^2/p_T^2$, where $m_c$ is the charm-quark mass and $p_T$ is the quarkonium transverse momentum. The computation is carried out in the framework of nonrelativistic QCD. We include corrections to the parton-production cross sections through next-to-leading order in the strong coupling $\alpha_s$ and corrections to the fragmentation functions through second order in $\alpha_s$. We also sum leading logarithms of $p_T^2/m_c^2$ to all orders in perturbation theory. We find that, when we combined these leading-power fragmentation corrections with fixed-order calculations through next-to-leading order in $\alpha_s$, we are able to obtain good fits for $p_T\geq 10$ GeV to hadroproduction cross sections that were measured at the Tevatron and the LHC. Using values for the nonperturbative long-distance matrix elements that we extract from the cross-section fits, we make predictions for the polarizations of the quarkonium states. We obtain good agreement with measurements of the polarizations, with the exception of the CDF Run II measurement of the prompt $J/\psi$ polarization, for which the agreement is only fair. In the predictions for the prompt-$J/\psi$ cross sections and polarizations, we take into account feeddown from the $\chi_{cJ}$ and $\psi(2S)$ states.
        Speaker: Hee Sok Chung (Argonne National Laboratory)
      • 18:00
        From lepton interactions to hadron and nuclear ones at high multiplicity 2h
        All available (up to 200 GeV) data on multiplicity in $e^+e^-$ annihilation are described well in the framework of two-stage model based on pQCD and suggested phenomenological scheme of hadronization. This model confirms increasing of number of splitting gluons with growth of energy and the fragmentation mechanism of hadronization in vacuum: single gluon $\rightarrow $ single hadron that corresponds to hypothesis of local parton-hadron duality. It can give estimations for mean multiplicity at 100-500 TeV. Modification of this model for proton-proton and proton-antiproton interactions has been realised by inclusion of gluons which play active role in multi-particle production and they are the main sources of secondary particles. The valency quarks are staying at that in the leading particles. This model is called a gluon dominance model. It demonstrates very strong evidence of recombination mechanism of hadronization in hadron and nuclear interactions when formation of secondary particles at hadronization is realised in quark-gluon medium. In this case the mean multiplicity of hadrons formed from parton (gluon) grows with energy and it exceeds the corresponding values for lepton interactions. At the same time the region of high multiplicity is stipulated for active splitting of gluons. For the first time measured at Nuclotron (JINR) soft photon yield at interactions of 3.5A GeV/c deuteron and lithium beams with carbon target confirms their excess in comparison with theoretical predictions. Estimations of region of their emission can lead to changing (increasing) of the generally accepted region of strong interactions.
        Speaker: Elena Kokoulina (Joint Institute for Nuclear Research)
      • 18:00
        Global properties of heavy-ion collisions at the LHC 2h
        The main goal of the ALICE experiment at the LHC is to study the properties of the deconfined state of matter known as the Quark-Gluon Plasma (QGP), created in ultrarelativistic heavy ion collisions. In this context, strangeness and light flavor observables help for the characterization of the bulk properties of the QGP. Thanks to its unique detector design, the ALICE experiment can identify hadrons in a wide momentum range by employing different detection systems and techniques. The transverse momentum spectra of primary charged ($\pi^{\pm}$, K$^{\pm}$, p and $\bar{\rm p}$) and neutral (K$^{0}_{\rm S}$, $\Lambda$ and $\bar{\Lambda}$) hadrons measured at mid-rapidity ($|y| < 0.5$) in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV and in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV are presented. Particle-production ratios are also discussed as a function of $p_{\rm T}$ and average charged-particle density ($\langle dN_{\rm ch}/d\eta \rangle$). Results from Pb-Pb collisions at LHC energies and from lower-energy experiments show that the bulk matter created in high-energy nuclear reactions can be quantitatively described in terms of hydrodynamic and statistical models. A comprehensive comparison of ALICE Pb-Pb data with hydrodynamic-inspired and thermal models is presented. Furthermore, we also report on the multiplicity dependence of light flavor particle production for the smaller systems created in p-Pb collisions and discuss the disentanglement of initial and final state effects. The first results obtained in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV will be presented and compared with the previous lower energy measurements.
        Speaker: Stefania Bufalino (Universita e INFN Torino (IT))
      • 18:00
        Hadron Production Measurements for Neutrino Experiments with NA61/SHINE 2h
        Particle spectra have been obtained from interactions of 31 GeV/c protons and pions on a thin carbon target with data taken in 2009 and interactions of protons on a T2K replica target with data taken in 2009 and 2010 by NA61/SHINE. These spectra include multiplicities of $\pi^+$,$\pi^-$, $K^+$, $K^-$, protons, $\Lambda^0$ and $K^0_s$. The results from the 2009 proton data have recently been published in two papers - one for the thin target results and one for the replica target results. Currently, analyses of the 2010 replica target data and 2009 pion on thin target data are ongoing. The charged particle spectra were obtained using dEdx and timing information from NA61's TPC and ToF systems, while the neutral particle spectra were obtained using vertex analyses. The thin target measurements have already been used to tune the T2K beam MC and reduce the uncertainties on the T2K neutrino flux prediction. Additionally, a method has been developed to apply the T2K replica target measurements to the T2K beam MC tuning, which is expected to further constrain the T2K neutrino flux predictions especially with the addition of the larger 2010 data set. Having demonstrated its usefulness for improving T2K's results, NA61 is poised to study the hadron interactions important for Fermilab neutrino experiments. The results from the 2009 pion carbon data will be useful for understanding pion reinteractions in the LBNF and NuMI beamlines. For a complete hadron interaction study, an extensive data program with proton and pion beams at higher energies is planned at NA61 over the next couple of years.
        Speaker: Scott Robert Johnson (University of Colorado at Boulder (US))
      • 18:00
        HEP Computing for the Greater Good 2h
        Out of necessity, the computing model for HEP was transformed over the past two decades from being one confined to a centralized data center, usually situated at the host laboratory, to one fully network-based, distributed across institutional boundaries and geographical regions. This shift from centralized to an intrinsically distributed model has allowed accumulations of diverse collections of resources, opened up new modes of institutional contribution and sharing, and has democratized access to processing and analysis capacity creating an environment where individual and group-level talent and imagination flourishes across collaborations. Indeed HEP has forged new modalities of scientific computation at scales characterized by reading exabytes of data, consuming a billion CPU-hours annually, with resource contributions coming from hundreds of data centers linked with networks of up to 100 gigabits per second bandwidth capacity. A natural question arises as to what impact the innovative methods, software, services and distributed cyberinfrastructure can have on scientific computation outside of HEP. Which science domains have workflow patterns resembling those commonly used in HEP computation and stand to benefit from lessons learned in the LHC computing era? In this presentation we explore how HEP computing is already enabling domains well outside of physics and prospects for transformative impact for disciplines in the so-called “long tail” of science.
        Speaker: Robert William Gardner Jr (University of Chicago (US))
      • 18:00
        High Average Beam-Power SRF Electron Source 2h

        There is a significant interest in achieving high-average power electron sources particularly in the area of electron sources integrated with Superconducting Radio Frequency (SRF) systems. For these systems, the electron gun and cathode parts are critical components for stable intensity and high-average powers. In this study, we will present the design of 8.5-cell accelerator cavity having 1.3-GHz frequency and field optimization studies by using simulation results of SUPERFISH and Spiffe.

        Speaker: Nihan Sipahi (Colorado State University)
      • 18:00
        High Speed Re-Configurable Data Acquisition for Project 8 2h
        Re-configurable Open Architecture Computing Hardware (ROACH) developed by Collaboration for Astronomy Signal Processing and Electronics Research (CASPER) is a single processor, FPGA based board with the ability to accept a number of different add - on electronics for signal processing. Project 8 is a novel experiment making use of cyclotron radiation emission spectroscopy (CRES) technique to measure the energy of $^{83m}Kr$ beta decay electrons trapped in a magnetic field, with the aim of improving this technique to directly probe the neutrino mass by locating the cut off energy of the beta spectrum. The most important signal is the RF cyclotron radiation emitted from magnetically trapped beta decay electrons. The pre-requisite of Project 8 is to be able to resolve the electron energy to a high degree which is only possible with precision digitization and analysis of the RF cyclotron radiation. The system is programmed using XILINX library and controlled online by the open source custom made MANTIS software package. We will present an electronics application build from ROACH with the ability to digitize and process GHz signals to 12 bit precision with the aim of implementing level 1 online analysis on the ROACH board itself.
        Speaker: Mr Prajwal Mohanmurthy (MIT)
      • 18:00
        High Speed Visible Light Comunication System based on SiPM 2h
        A SiPM device has very high sensitivity, rapid response and high performance when it is operated in oversaturation conditions and detects very small variations in incident optical radiation. A SiPM detects low power light beams that are imperceptibles for other photodetectors. In this paper, we present a SiPM-based receiver that discriminate small light signals from background noise, while exposed to ambient light conditions without optical filters or another additional device and it is added to a High Speed Visible Light Communication System. This system works under normal ambient illumination conditions. This prototype is an innovation in the communications industry, built with technology developed by nuclear physics community. This new technology is a link between the science and communications industry.
        Speakers: Mr Javier Fernando Castaño Forero (Universidad Antonio Nariño), Mr LUIS FERNANDO CASTAÑEDA MELO (Universidad Antonio Nariño)
      • 18:00
        High-gradient X-band RF technology for CLIC and beyond 2h
        The Compact Linear Collider (CLIC) project is exploring the possibility of constructing a multi-TeV linear electron-positron collider for high-energy frontier physics studies beyond the LHC era. The CLIC concept is based on high-gradient normal-conducting accelerating structures operating at X-band (12 GHz) frequency. We present the status of development, prototyping and testing of structures for operating at gradients of 100 MV/m and beyond. We report on high-power tests of these structures using test facilities at CERN and KEK, and their performance with and without beam loading as measured in tests at the CLIC Test Facility, CTF3. We report the progress in understanding the behavior of metal surfaces under high fields, modelling vacuum breakdown and the current understanding of high-gradient performance limitations. We summarise developments for application of the X-band technology to more compact accelerators for use eg. as X-ray FELs and in medicine.
        Speaker: Philip Burrows (Oxford University)
      • 18:00
        High-Rate Fast-Time GRPC for the high eta CMS muon detectors 2h
        With the increase of the LHC luminosity foreseen in the coming years many detectors currently used in the different LHC experiments will be dramatically impacted and some need to be replaced. The new ones should be capable not only to support the high particle rate but also to provide time information to reduce the data ambiguity due to the expected high pileup. RPC using low-resistivity materials are proposed to equip the very forward region of the CMS detector. In their single-gap version they can stand rates of few kHz/cm2. This was checked in two beam tests, first at DESY in 2012 and then at the CERN PS in August 2014 and will be tested in June 2015 at SPS on RPC using low resistivity glass. The single-gap can also allow to reduce the noise contribution by providing a good timing measurement (of the order of 1 ns) and hence it improves the trigger rate but for this a TDC is needed. A new Printed Circuit Board (PCB) with 2.5 mm pitch strips on both sides was conceived. The strips that are read out by the HARDROC ASIC and the NOR64 signal of the 64 channels of each of the 4 ASIC was used to read out the strips were used to record the signal timing. The timing measurement at the CERN PS as well with the cosmic bench in laboratory shows a time resolution of few nanoseconds. Another feature obtained with such PCB is the spatial resolution such a detector could provide. Resolution better than 2 mm was indeed obtained. A more sophisticated PCB with strips of 4 mm pitch read out on both sides thanks to another ASIC called PETIROC featuring an excellent timing behaviour was conceived and produced. A TDC with a time resolution of 25 ps is to be used. The strips are read out from both ends. Preliminary results on this PCB show excellent time resolution (< 50 ps). The PCB will be inserted between two large GRPC detectors built by combining small pieces of glass. Two kinds of these detectors were built. One was obtained by gluing small pieces of glass to build large plate (the glass limitation of 30x30 cm2 is due to the fabrication procedure). The second was produced by assembling mechanically the glass pieces inside a gas-tight cassette. Both were tested and found to have excellent efficiency. The comparison between the two kinds will allow to choose the procedure to propose for the CMS TDR. In addition to the single-gape R&D, another activity on the multi-gap version is being followed. The multi-gap GRPC can do indeed better in both the particle rate detection and the time precision measurement. Time precision of better than 150 ps could be obtained. This aims at reducing the ambiguity the expected high pileup will introduce. Both construction techniques developed for the single-gap version are being followed for the multi-gap as well Also the same electronics developed for the single gap GRPC will be used to test the multi-gap. Both single gap and multi-gap detectors were tested at the GIF++ facility to check their robustness in a very aggressive irradiation environment as the one to prevail in the high eta region of the CMS detector. Further tests are planed.
        Speaker: Laurent Mirabito (Universite Claude Bernard-Lyon I (FR))
      • 18:00
        Horizon-T Extensive Air Showers detector system operations and performance 2h
        “Horizon-T” is an innovative detector system located at Tien Shan high-altitude Science Station at approximately 3340 meters above the sea level. It consists of seven detection points separated by the distance up to one kilometer that can measure time characteristics of the Extensive Air Showers (EAS) and record signal shapes with time resolution of ~10 ns. It was constructed to register EAS in the energy range above 1016 eV coming from a wide range of zenith angles (0 - 85 deg.). The system includes both the plastic scintillator particle detectors as well as the Vavilov-Cerenkov radiation detectors subsystem to view the Cerenkov light from the EAS in the atmosphere directly. The time resolution and signal shape analysis capabilities of the detection points are used to study EAS development in the atmosphere as well as to study the space-time distribution of charged particles. The development of the EAS is a process that can be studied both spatially and temporarily. For the spatial part, a distributed network of detection points is required. For the time part, a signal shape must be recorded and analyzed at each point with time resolution on the order of ~10 ns. The talk would present the current system setup and performance level, and the progress of the system upgrade and its improvement on performance based on latest simulation activities. The latest data examples will be presented as well.
        Speaker: Dmitriy Beznosko (Nazarbayev University)
      • 18:00
        IBD BACKGROUND REJECTION AND TAGGING AT THE DOUBLE CHOOZ EXPERIMENT 2h
        Double Chooz (DC) is a reactor anti-nue disappearance experiment located in France near the power plant of Chooz. The main goal of the experiment is the measurement of the θ13 mixing angle and, already in 2011, it provided the first positive indication for a non-zero value of such an oscillation parameter, using a single detector. The exploitation of the second detector (near detector), taking data since December 2014, provided the partial cancellation of some systematic errors. This posters shows the first results for both detectors, including both phases: single detector (2011-2014) and double detector (from 2015). Major improvements have followed through the different released analyses, especially on the the reduction and active rejection of both radiogenic and cosmogenic backgrounds. Currently, despite its lowest overburden (100 m.w.e. for the near detector), DC has among the best correlated and uncorrelated (accidental) background systematics errors in the θ13 reactor field. In fact, DC is able to active reject all type of backgrounds using several unprecedented multi-detector correlation strategies. So, multi-Compton radioactive, stopping-muon, fast-neutron and event the generation of spallation isotopes such as Li(9), H(8) and B(12) can be tagged, for energy spectra characterisation and eventual rejection. In addition, the FADC based electronics provide the recording the waveform of each PMT, which is exploited for additional background rejection based on pulse shape analyses in time and frequency domain (i.e. Fourier transformed). All the strategies here described are validated by invaluable reactor-OFF data, only available to DC (1 week). Last, upon the measurement of θ13, DC articulates further constraining of background exploiting its excellent response control, reducing the main background errors by up to 2x. In this poster, we illustrate the full background tagging and rejection framework (i.e. ~10 different analyses), including the articulation of background higher precision improvement during neutrino oscillation fit. The hereby presented techniques are expected to be of large value for the development of similar techniques by similar detectors.
        Speaker: Anselmo Meregaglia (Institut Pluridisciplinaire Hubert Curien (FR))
      • 18:00
        Identification of boosted hadronically decaying W bosons and top quarks using the ATLAS detector 2h
        At the LHC, massive hadronically decaying Standard Model particles, such as the W boson and the top quark, can be produced with high transverse momenta much larger than their mass. This will lead to increased collimation of the decay products in the direction of the boosted parent particle. ATLAS has commissioned and implemented jet substructure techniques to reconstruct and identify hadronically decaying W bosons and top quarks while rejecting backgrounds from light quarks and gluons. In Run­1, the performance of these techniques, evaluated from Monte Carlo simulation, was validated with data. For Run­2, these techniques are further optimised and their expected performance are studied. Several physics analyses with hadronically decaying W boson and top quark final states have employed these techniques to increase the sensitivity of their analyses.
        Speaker: ATLAS Collaboration (CERN)
      • 18:00
        Impact of Theory Uncertainties on the Precision of the Top Quark Mass in a Threshold Scan at future e+e- Colliders 2h

        Future energy-frontier electron-positron colliders will be capable of high-precision studies of the properties of the top quark. The measurement of the top-pair production cross section around the threshold provides access to the mass of the top quark in theoretically well-defined schemes, with statistical uncertainties of 20 MeV or less, depending on the assumed integrated luminosity of the measurement. At this level of precision, experimental and theory systematics are likely to become important or even dominant. We will present a first analysis of the impact of the remaining uncertainties of the recently completed calculation of the top pair production cross section at NNNLO QCD including the exchange of Higgs bosons on the extraction of the top quark mass from a threshold scan. The analysis is based on reconstruction efficiencies and background levels obtained in full simulation studies for CLIC, combined with signal cross sections from the higher-order calculations. To assess possible differences between different collider options, the study is performed in the context of CLIC, ILC and FCC-ee, taking into account also the different projected integrated luminosities to be collected at the different colliders.

        Speaker: Frank Simon (Max-Planck-Institut fuer Physik)
      • 18:00
        Improvement of the J-PARC neutrino beam for a lepton CP violation search. 2h
        The J-PARC neutrino beam-line generates a high intensity neutrino beam, using 30 GeV protons from the J-PARC MR accelerator, for the long-base line neutrino oscillation experiment T2K. T2K observed neutrino oscillations between muon neutrinos and electron neutrinos in 2013, and started the search for oscillations between muon anti-neutrinos and electron anti-neutrinos using a ~400kW proton beam. The refurbishment of the J-PARC MR planned in 2018 and recent progress of its tuning will assure the achievement of the design beam power, 750kW, and further beam power improvement above 1MW in the near future is promising. We will present improvements of the J-PARC neutrino beam-line made in order to generate a neutrino beam using a few MW proton beam so that T2K can search for evidence of CP violation in the lepton sector. We will describe the production and implementation of key components, such as the handling system of the extracted protons, the production target, radioactive waste treatment, etc. The improvement of the neutrino beam intensity by increasing the magnetic field of the pion focusing system will also be discussed.
        Speakers: Ken Sakashita (High Energy Accelerator Research Organization(KEK), Institute of Particle and Nuclear Study), Prof. Megan Friend (KEK), Takashi Kobayashi (KEK), Takeshi Nakadaira (HIGH ENERGY ACCELERATOR RESEARCH ORGANIZATION, KEK), Taku Ishida (KEK), Tetsuro Sekiguchi (KEK)
      • 18:00
        Inclusive top-quark pair production cross section in pp collisions at \sqrt{s} = 13 TeV in CMS in the dileptonic final state 2h
        The inclusive cross section for top-quark pair production is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV with the CMS experiment at the LHC using the data samples collected in 2015 and the first data collected in 2016. The measurement is performed with events containing an opposite charge electron-muon pair and at least 2 jets, one of which is identified as a b-jet. Background estimates are obtained using data driven techniques as much as possible and a event counting is used for the final measurement.
        Speaker: Juan Rodrigo Gonzalez Fernandez (Universidad de Oviedo (ES))
      • 18:00
        Inflationary Dynamics Reconstruction via Inverse-Scattering Theory 2h
        The seminal works of Guth and Sato established that an early period of accelerated cosmic expansion, referred to as inflation, can successfully account for many of the observed large scale properties of our Universe. Most importantly, the inflationary paradigm provides a natural and appealing mechanism for the generation of primordial density perturbations responsible for seeding the growth of structure in the Universe. However, despite the concordance between observations and the predictions of an inflationary scenario, the physics responsible for driving inflation is still a subject of debate and remains largely speculative. In this work I explore how the interface between inflation and inverse-scattering theory can shed light on the stress-energy which drove inflationary expansion. In particular, I study two inflationary models and show how the inverse-scattering framework allows one to reconstruct the Universe's expansion history during inflation to a reasonable accuracy under the assumptions of access to the complete primordial power spectrum of density fluctuations, $P(k)$, and the amplitude and slope of the primordial tensor power spectrum at cosmic microwave background scales. These results, however, constitute an idealization as practical limitations prohibit a survey of the primordial density power spectrum for all scales. Notwithstanding, this preliminary analysis is the basis for an extended reconstruction procedure which will take into account only the partial existing data on the primordial power spectrum. Looking forward, I discuss how such an extended procedure could be built from a statistical treatment of the function space of possible $P(k)$, as well as the constraints it could place on the evolution and equation of state of the inflaton field.
        Speaker: Fernando Zago (University of Pittsburgh)
      • 18:00
        Installation and Commissioning of the ATLAS Forward Proton (AFP) detector 2h
        Installation and Commissioning of the ATLAS Forward Proton (AFP) detector The ATLAS collaboration is realizing the first phase of the ATLAS Forward Proton (AFP) detector to measure diffractive protons leaving under very small angles the ATLAS proton-proton interaction point. In its first phase the AFP detector consists of two 3D Silicon pixel detectors, each placed in a Roman Pot. Both Pots are placed on one ATLAS side, 204 and 217 meters away from the ATLAS interaction point. The presentation will give a summary of the detector system construction, a brief overview of its installation in the LHC tunnel and first plots based on data taken during detector commissioning including their comparison with expectations based on existing simulations and/or extrapolated measurements.
        Speaker: Tomas Sykora (Charles University (CZ))
      • 18:00
        JUNO central detector and its calibration system 2h
        The Jiangmen Underground Neutrino Observatory (JUNO), a 20 kton multi-purpose underground liquid scintillator (LS) detector, is under construction in China to mainly determine the neutrino mass hierarchy (MH) by detecting reactor anti-neutrinos. The center detector of JUNO is an acrylic sphere with a diameter of 35.4 m containing about 20,000 ton of liquid scintillator as the target and equipped with ~17000 20’’ PMT + ~35000 3’’ PMT , which is the key of the whole facility. The details of the CD will be presented. JUNO Central Detector needs to be thoroughly calibrated to achieve an overall energy resolution of 3% at 1 MeV, and an energy nonlinearity much better than 1%. Therefore a thorough calibration system complex is is needed to be capable to deploy multiply sources, to cover the entire energy range of reactor neutrinos, and to achieve a full-volume position coverage inside the detector. Radiation source geometry has been designed to minimize the optical shadowing effects as well as the energy loss effects. Then the calibration system including a fully automated calibration unit (ACU) serving the central axis of the detector, a cable loop system (CLS) carrying the sources to scan an off-center plane, a remotely operated under-liquid-scintillator vehicles (ROV) and a Guide Tube Calibration System(GTCS) aiming at calibrating the boundary effect, will be demonstrated respectively.
        Speaker: Qingmin Zhang (Xi'an Jiaotong University)
      • 18:00
        Lattice QCD study of excited hadron resonances 2h
        The spectrum of excited hadron resonances in QCD is studied using Monte Carlo path integration techniques formulated on a large $32^3\times 256$ anisotropic space-time lattice. A large number of probe interpolating operators are used, and calculation of temporal correlations is accomplished using a stochastic method of treating the low-lying modes of quark propagation that exploits Laplacian Heaviside quark-field smearing. An effective Hamiltonian is used to interpret the finite-volume energies and determine the masses and widths of the resonances. Changes to the spectrum upon introducing a variety of tetraquark operators is investigated.
        Speakers: Andrew Hanlon (University of Pittsburgh), Jacob Fallica (Carnegie Mellon University)
      • 18:00
        Level-1 track trigger for the upgrade of CMS detector at HL-LHC 2h
        The CMS experiment at the LHC at CERN is studying proton-proton collisions at a centre of mass energy of 13 TeV and a frequency of 40 MHz. The experiment produces a raw data rate of the order of PB/second and thus requires a highly efficient trigger system. This is achieved in two stages, a hardware trigger (Level-1(L1)) and a software trigger (High Level Trigger). The L1 trigger, selects interesting ‘physical’ events from the background of events by using calorimetric and muon information. The second decade of the LHC will experience an order of magnitude increase in the instantaneous luminosity, hence increasing the number of collisions per bunch crossing. Such an increase would require changes to both the algorithms and the architecture of the L1 trigger, in particular the integration of tracking at L1. The key component of the CMS upgrade for HL-LHC is a L1 Track Trigger (TT) system. The system will be able to identify tracks with a momentum threshold of 2 GeV/c or above. We will discuss about the concepts and usage for the L1 track finding system.
        Speaker: Sudha Ahuja (UNESP - Universidade Estadual Paulista (BR))
      • 18:00
        LHCb Exotica and Higgs searches 2h
        The unique phase space coverage and features of the LHCb detector at the LHC makes it an ideal environment to probe complementary New Physics parameter regions. In particular, recently developed jet tagging algorithms are ideal for searches involving $b$ and $c$ jets. This poster will review different jet-related exotica searches together with the efforts in the search for a Higgs boson decaying to a pair of heavy quarks.
        Speaker: Donatella Lucchesi (Universita e INFN, Padova (IT))
      • 18:00
        Light WIMPs detection with carbon nanotube arrays. 2h
        We propose a new technique to detect WIMPs with large arrays of carbon nanotubes. Carbon ions, scattered by WIMPs, might be channeled within nanotubes depending on their kinematical conditions. The orientation of nanotube axes with respect to the Cygnus constellation is shown to be effective at discriminating the background. We also show how the interstices among nanotubes cooperate to build the detection signal. The technique is particularly amenable to search WIMPs with a mass around 10 GeV.
        Speaker: Dr Ludovico Capparelli (UCLA)
      • 18:00
        Looking amongst the neutrinos for lightweight dark matter in the NOvA Near Detector 2h
        The NOvA long-baseline neutrino oscillation experiment is getting record numbers of 120GeV protons on target from Fermilab's NuMI neutrino beam. We take advantage of the sophisticated particle identification algorithms of the experiment to search in the data from the 300-ton, off-axis, low-Z, Near Detector of NOvA during the experiment’s first physics runs. Lightweight Dark Matter models predict that under-10 GeV candidates produced in the NuMI target might scatter or decay in the Near Detector. This poster outlines the strategies and sensitivities of such a search.
        Speaker: Filip Jediny (Czech Technical University in Prague)
      • 18:00
        Low Energy Background Spectrum in CDMSlite 2h
        One trend in dark matter direct detection is the development of techniques which will lower experimental thresholds and achieve sensitivity to light mass dark matter particles. In doing so, it is necessary to have an understanding of the low energy spectrum and the major background components. Geant4.10 has a number of specialized low energy physics processes that can be implemented when simulating an experimental geometry. To understand this low energy region for the Super Cryogenic Dark Matter Search (SuperCDMS), a variety of these models have been simulated and compared against theoretical calculations and SuperCDMS data. Most of the low energy processes include a more complete description of the atomic structure, allowing us to observe the phenomenon of Compton steps in the simulation which has been detected experimentally in silicon detectors. An important application of this low energy background modeling is for the SuperCDMS-Low Ionization Threshold Experiment (CDMSlite). CDMSlite has reached world-leading sensitivities in the search for low mass weakly interacting massive particle (WIMP) dark matter. Using Neganov-Luke phonon amplification, CDMSlite has achieved a threshold of less than 60 eV. The sensitivity of this current data can be improved by understanding and modeling the experimental backgrounds down to this threshold. The recent decommissioning of SuperCDMS-Soudan has allowed for specific measurements of the radiogenic activity and surface contamination of certain components of the experiment. This will enable us to construct a more informed simulated spectra for background subtraction. Development of the machinery for creating a low energy background model will also be useful in the future SuperCDMS-SNOLAB experiment which will run multiple high voltage detectors in CDMSlite mode.
        Speaker: D'Ann Barker (University of Minnesota)
      • 18:00
        Low-temperature detector development for double beta decay experiments 2h
        Cryogenic detectors operating at millikelvin temperatures are important tools in search for rare events such as neutrinoless double beta decay (0νββ). This poster introduces how the extremely high energy resolution is achieved with the metallic magnetic calorimeter (MMC), which is used the rare events search. The poster gives a description of the photon-phonon simultaneous measurement technique developed for neutrinoless double beta decay experiments. Some experimental results are also presented.
        Speaker: Inwook Kim (Institute of Basic Science)
      • 18:00
        LYSO based precision timing calorimeters 2h
        In this report we outline the study of the development of calorimeter detectors using bright scintillating crystals. We discuss how timing information with a precision of a few tens of pico seconds and below can significantly improve the reconstruction of the physics events under challenging high pileup conditions to be faced at the High-Luminosity LHC or a future hadron collider. The particular challenge in measuring the time of arrival of a high energy photon lies in the stochastic component of the distance of initial conversion and the size of the electromagnetic shower. We present studies and measurements from test beams for calorimeter based timing measurements to explore the ultimate timing precision achievable for high energy photons of 10 GeV and above. We focus on techniques to measure the timing with a high precision in association with the energy of the photon. We present test-beam studies and results on the timing performance and characterization of the time resolution of LYSO-based calorimeters. We demonstrate time resolution of 30 ps is achievable for a particular design. Authors : D. Anderson, A. Apresyan, A. Bornheim, J. Duarte, C. Pena, A. Ronzhin, M. Spiropulu, J. Trevor, S. Xie
        Speaker: Cristian Ignacio Pena Herrera (California Institute of Technology (US))
      • 18:00
        Making sense of the LHC diboson and diphoton excesses 2h
        Towards the end of Run-1 data taking, an excess in the diboson as well as eejj channel was announced. During the first round of Run-2 data taking, an excess in diphoton channel has been announced. I consider possible explanations of these excesses in two different BSM scenarios. I demonstrate the feasibility of accommodating the diboson and eejj excess in a Left-Right Symmetric Standard Model. For the diphoton excess, I scrutinise a simplified model with scalar resonance coupling to gluons, photons and fermionic dark matter. I illustrate the monojet constraints on such a simplified model scenario and inspect the possibility of reconsiling the diphoton excess with dark matter constraints.
        Speaker: Suchita Kulkarni (Austrian Academy of Sciences (AT))
      • 18:00
        Mass Predictions of Open-Flavour Hybrid Mesons from QCD Sum Rules 2h
        Within QCD, colourless states may be constructed corresponding to exotic matter outside of the traditional quark model. Experiments have recently observed tetraquark and pentaquark states, but no definitive hybrid meson signals have been observed. With the construction of the PANDA experiment at FAIR, and with full commissioning of the GlueX experiment at JLab expected to be completed this year, the opportunity for the observation of hybrid mesons has greatly increased. However, theoretical calculations are necessary to ascertain the identity of any experimental resonances that may be observed. We present selected QCD sum rule results from a full range of quantum numbers for open-flavour hybrid mesons with heavy valence quark content, including non-perturbative condensate contributions up to six-dimensions.
        Speaker: Mr Jason Ho (University of Saskatchewan)
      • 18:00
        Measurement of differential and integrated fiducial cross sections for Higgs boson production in the four-lepton decay channel in pp collisions at sqrt(s) = 7 , 8 and 13 TeV 2h
        Integrated fiducial cross sections for the production of four leptons via $H \rightarrow 4\ell$ decays ($\ell = e, \mu$) are measured in pp collisions at $\sqrt{s}=7$ TeV , $\sqrt{s}=8$ TeV and $\sqrt{13}~TeV$. Differential fiducial cross sections are also measured with $\sqrt{s}=8$ TeV data. Measurements are performed with data corresponding to integrated luminosities of 5.1 fb$ ^{-1}$ at 7 TeV, and 19.7 at fb $^{-1}$ at 8 TeV and 2.6 fb$ ^{-1}$ at 13 TeV, collected with the CMS experiment at the LHC. Differential cross sections are determined as functions of the transverse momentum and rapidity of the four-lepton system, accompanying jet multiplicity, transverse momentum of the leading jet, and difference in rapidity between the Higgs boson candidate and the leading jet. A measurement of the $Z \rightarrow 4\ell$ cross section, and its ratio to the $H \rightarrow 4\ell$ cross section is also performed with 8 TeV data . All cross sections are measured within a fiducial phase space defined by the requirements on lepton kinematics and event topology. The integrated $Z \rightarrow 4\ell$ fiducial cross section is measured to be $0.56^{\rm +0.67}_{\rm -0.44} \, {\rm(stat.)}\, ^{\rm +0.21}_{\rm -0.06}\, {\rm (sys.)}$ fb at 7 TeV, and $1.11^{\rm +0.41}_{\rm -0.35} \, {\rm(stat.)}\, ^{\rm +0.14}_{\rm -0.10}\, {\rm (sys.)}$ fb at 8 TeV. The measurements are found to be compatible with theoretical calculations based on the standard model.
        Speaker: Mr Muhammad Ahmad (Chinese Academy of Sciences (CN))
      • 18:00
        Measurement of fiducial cross sections of the 125 GeV Higgs boson using the CMS detector 2h
        The status of the fiducial cross sections of the 125 GeV Higgs boson using the CMS detector will be given in this talk. New results at 13TeV will be presented together with the run-I measurements.
        Speaker: Andre Sznajder (Universidade do Estado do Rio de Janeiro (BR))
      • 18:00
        Measurement of low-pT charm-meson production cross-section at CDF 2h

        We present a measurement of the production cross-section of charm mesons in proton-antiproton collisions at 1.96 TeV center-of-mass energy, using the full data set collected by the CDF experiment at the Tevatron collider in Run II. The measurement probes a yet unexplored low transverse-momentum range, down to 1.5 GeV/c, using events selected with criteria that bias minimally the features of the collision. For initial state and collision energy, this remains a unique measurement of quantities that are important for QCD studies and for tuning Monte Carlo simulations.

        Speaker: Luigi Marchese (University of Oxford (GB))
      • 18:00
        Measurement of quenching factor for NaI(Tl) scintillation crystal 2h
        Measurements of the quenching factor for sodium and iodine recoils in a small (2 cm x 2 cm x 1.5 cm) NaI(Tl) crystal have been performed with 2.48 MeV mono-energetic neutrons generated from D-D fusion. The crystal was made from the same Alpha Spectra-grown ingot as a large crystal used for KIMS-NaI experiment. BC501a liquid scintillators are installed in various angles to tag neutrons that scatter off sodium or iodine nuclei. Depending on the scattering angle of the neutron, energies of recoiled ions range from 10 to 100 keVnr for sodium and 10 to 75 keVnr for iodine. Quenching factors of sodium are measured at 4 points and those range from 14% to 20% and those of iodine are measured at 5 points and those range from 5~7%. Additional measurement in lower recoil energy regions for sodium is planned.
        Speaker: Mr Han-wool Ju (Seoul National University)
      • 18:00
        Measurement of reactor antineutrino flux and spectrum at Daya Bay 2h
        The Daya Bay Reactor Neutrino Experiment consists of eight antineutrino detectors placed at different baselines from six 2.9 GWth nuclear reactors. Since the start of data taking in late 2011, the experiment has collected the largest sample of reactor antineutrino interactions. A measurement of the reactor antineutrino flux and spectrum, and its comparison to the prediction of emission models for nuclear reactors will be presented. The capability of monitoring plutonium production in the Daya Bay cores via the measurement of time-dependent variations in the detected reactor antineutrino spectrum will also be discussed.
        Speaker: Ka Vang Tsang (Lawerence Berkeley National Lab)
      • 18:00
        Measurement of sin22θ13 using neutron capture on hydrogen at Daya Bay 2h
        The Daya Bay experiment has made a measurement of sin22θ13 using neutron capture on hydrogen (nH). This measurement is largely independent of the more precise Daya Bay result using captures on gadolinium (nGd). The resulting observation of reactor antineutrino disappearance offers strong confirmation of the nGd result and provides the world’s second most precise measurement of sin22θ13. New techniques were developed to deal with the more challenging analysis due to larger backgrounds, longer capture time and larger energy leakage.
        Speaker: Hanyu Wei (Daya Bay)
      • 18:00
        Measurement of the cross section of the production of a top quark pair in association with a photon at 8 TeV 2h
        A measurement of the cross section of top quark pairs produced in association with a photon is presented. The data were collected by the CMS experiment in proton-proton collisions at a center of mass energy of 8 TeV. The measurement is performed in the semileptonic, electron+jets and muon+jets, final state. The fiducial cross section for top quark pair plus photon production is measured in the phase space corresponding to the semileptonic decay of the top quark pair with a 25 GeV photon. The top quark pair plus photon production cross section is measured relative to the full top quark pair production cross section.
        Speaker: Daniel Noonan (Florida Institute of Technology (US))
      • 18:00
        Measurement of the hadronic cross sections for e+e- to final states with neutral kaons with the BABAR detector 2h
        Measurements of low-energy e+e- hadronic cross sections are of fundamental importance because of the approximately three sigma discrepancy between the current measured value of the muon anomalous magnetic moment (g-2) and the Standard Model prediction. By means of the initial-state-radiation technique, we present the first measurements of the e+e- -> KS KL pi0, KS KL eta and KS KL pi0 pi0 cross sections, and the study of their intermediate resonance structure, using 469 fb^-1 of data collected with the BaBar detector at SLAC. Initial-state radiation events are also used to study the processes e+e- ->KS K+ pi- pi0 and KS K+ pi- eta, and their intermediate states.
        Speaker: Dr Alessandro Pilloni (Jefferson Lab)
      • 18:00
        Measurement of the neutrino-nucleon cross-section at multi-TeV energies with IceCube 2h
        We present a measurement of the total muon neutrino-to-nucleon cross-section at energies from 1.4 to 890 TeV. The measurement is based on the observation of the Earth's absorption of atmospheric and astrophysical neutrinos, using a sample of over 10,000 up-going muons from Earth-transiting neutrinos detected by the IceCube Neutrino Observatory in its 79-string configuration. The cross-section was determined using a two-dimensional fit in measured muon energy and zenith angle and will be presented as a multiple of the Standard Model expectation.
        Speaker: Ms Sandra Miarecki (Lawrence Berkeley National Laboratory)
      • 18:00
        Measurement of the top quark mass from leptonic observables in pp collisions 2h
        A novel technique for measuring the top quark mass using only leptonic observables is discussed. Top quark pair events with one electron and one muon and at least one jet in the final state are selected in proton-proton collision data collected by the CMS experiment at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb-1. Several variables are studied and the tranverse momentum distribution of the charged lepton pair originated from the top quark decay is chosen to extract the top quark mass. The measurement is calibrated using simulated events and a study of the statistical method and systematic uncertainties is presented.
        Speaker: Cristina Ana Mantilla Suarez (Florida Institute of Technology (US))
      • 18:00
        Measurement of the top-quark mass from the b jet energy spectrum with the CMS detector 2h
        A first measurement of the top-quark mass is presented based purely on the peak position of the energy spectrum of b jets produced from top-quark decays. This novel technique follows a recent theoretical proposal aiming to minimize systematic uncertainties related to the modeling of top quark production. The analysis is performed selecting top-antitop events with electron-muon final states in proton-proton collision data at sqrt(s) = 8 TeV with the CMS detector, corresponding to an integrated luminosity of 19.7 fb-1. The energy peak position is obtained by fitting the observed energy spectrum, and is translated to a top-quark mass estimation using relativistic kinematics, calibrated with Monte Carlo simulation.
        Speaker: Daniel Fernando Guerrero Ibarra (Boston University (US))
      • 18:00
        Measuring Antimatter Gravity with Muonium 2h
        The gravitational acceleration of antimatter (gbar) has never been directly measured and could bear importantly on our understanding of gravity, the possible existence of a fifth force, and the nature and early history of the universe. Three avenues appear feasible for such a measurement: antihydrogen, positronium, and muonium---a mu+ e- atom. The muonium measurement requires a novel monoenergetic, low-velocity, horizontal muonium beam (under development at PSI) directed at an atom interferometer. The precision three-grating interferometer can be produced in silicon nitride or ultrananocrystalline diamond using state-of-the-art nanofabrication. The required precision alignment and calibration at the picometer level also appear to be feasible. With 100 nm grating pitch, a 10% measurement of gbar can be made using some months of surface-muon beam time, and a 1% or better measurement with a correspondingly larger exposure. This could constitute the first gravitational measurement of leptonic matter, of 2nd-generation matter and, possibly, the first measurement of the gravitational acceleration of antimatter.
        Speaker: Daniel Kaplan (Illinois Institute of Technology)
      • 18:00
        Measuring Final State Neutrons From Neutrino-Neutron Interactions Using The ANNIE Experiment 2h
        The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a water Cherenkov (WCh)-based neutrino experiment at Fermilab, designed to study the abundance of final state neutrons from neutrino-nucleus interactions. Measurements of final-state neutron multiplicity will improve our understanding of the complex, many-body dynamics of neutrino-nucleus interactions and thus help to reduce dominant systematics on future long-baseline neutrino oscillation measurements. Identifying and counting final state neutrons also provides a useful experimental handle for signal-background separation in future neutrino experiments. Two enabling technologies make this measurement possible: (1) the first application of Large Area Picosecond Photodetectors (LAPPDs), which will allow detailed timing-based reconstruction of the primary neutrino interaction, and (2) the first use of gadolinium enhanced water on a high energy neutrino beam to efficiently count final-state neutrons. Phase I of ANNIE, designed to provide a measurement of critical neutron backgrounds, is currently being deployed on the Booster Neutrino Beam (BNB) with the support of the Fermilab directorate. In this poster we will describe recent developments in the execution of ANNIE Phase I, as well as the goals and plans for the full physics program of the experiment.
        Speaker: Carrie McGivern (Iowa State University)
      • 18:00
        Measuring the Higgs-charm coupling with heavy quarkonia 2h
        We discuss the decays of the Higgs boson to an $S$-wave vector quarkonium plus a photon. The decay rate is sensitive to both the size and the phase information of the Higgs-charm coupling through quantum interference. We improve the theoretical predictions by resumming logarithms to next-to-leading log accuracy and by calculating relativistic corrections of order $v^2$, where $v$ is the heavy-quark velocity in the quarkonium rest frame. These refinements reduce the theoretical uncertainties in the decay rate and open the door to improved determinations at the LHC of the Higgs-boson Yukawa couplings to charm and bottom quarks.
        Speaker: Dr Hee Sok Chung (Argonne National Laboratory)
      • 18:00
        Mitigation of Near-Surface Cosmogenic Background for the PROSPECT Experiment 2h
        PROSPECT will measure the antineutrino flux close to a research reactor core, where little-to-no cosmic-ray attenuating over- burden is available. Therefore, a detailed understanding of the background radiation fields is necessary. While time correlated detection of the products of Inverse Beta Decay (IBD), ${\nu+p\rightarrow e^{+}+n}$, provides powerful background rejection, greater background reduction is required for near-surface operation. Monte Carlo studies and validation with surface measurements have allowed PROSPECT to develop a detailed understanding of how near surface backgrounds differ from those experiments with significant overburden, how they can mimic signals of antineutrino interactions, and the originating particles and generation mechanisms. This poster describes the important features of near-surface cosmogenic backgrounds and how detector design features such as shielding, segmentation, and particle identification can be used for background mitigation.
        Speaker: Daniel Davee (William and Mary)
      • 18:00
        Mixed QCD-QED corrections to DGLAP equations 2h
        We study the mixed effect of QCD and QED corrections to the evolution of parton distributions functions (PDF). The Altarelli-Parisi splitting functions are extended to one order higher in QED, reaching ${\cal O}(\alpha\, \alpha_S)$ accuracy. This also involves extending DGLAP equations to include charge separation effects which are ignored for pure QCD corrections.
        Speaker: German Sborlini (IFIC-Valencia)
      • 18:00
        More results from the OPERA Experiment 2h
        The OPERA experiment has recently assessed the discovery of nu-tau neutrinos in the CNGS beam with a significance larger than 5 sigma, thus successfully achieving its main goal. The ongoing activity is aimed at the completion of the data analysis. Updated results will be presented including the search for nu_mu—>nu_e oscillations.
        Speaker: Yury Gornushkin (JINR-Dubna)
      • 18:00
        Multiple-cavity systems for axion dark matter search 2h
        Exploring higher frequency regions in axion dark matter searches using microwave cavity detectors requires a smaller size of the cavity as the TM010 frequency scales inversely with the cavity radius. One of the intuitive ways to make a maximal use of a given magnet volume, and thereby to increase the experimental sensitivity, is to bundle multiple cavities together and combine their individual outputs ensuring phase-matching of the coherent axion signal. The Experiment of Axion Search aT CAPP (EAST-C) is a dedicated project to develop multi-cavity systems at the Centre for Axion and Precision Physics Research (CAPP) of the Institute for Basic Science (IBS) in Korea. In this talk, the conceptual design of the phase-matching mechanism, experimental feasibility, and mechanical design of a double-cavity will be presented.
        Speaker: Dr SungWoo YOUN (CAPP/IBS)
      • 18:00
        Multipurpose Beam Instrument for EIC 2h
        A large part of the physics program being envisioned for future facilities such as the Electron Ion Collider (EIC) requires novel precision beam instrumentation. Here, we present a novel technique which uses the spacial asymmetry of synchrotron radiation (SR) produced by an electron beam passing through a wiggler magnet to trace the changes in beam polarization. Such a relative polarimeter could be vital if the goal of $< 0.5\%$ polarimetry is to be achieved at EIC In this paper, we update the discussion on the development of this technique supported by a Geant4 simulation. The polarimeter apparatus along with the underlying basic ideas are briefly introduced. As a part of the simulation, the effects of electron beam current and beam energy were studied which were found to be manageable over a wide range of electron beam energies and beam currents. It was found that such a relative polarimeter works best in the $4-20$ GeV regime. When coupled with a CCD camera, the SR can be used to further monitor the beam profile as demonstrated at the Swiss Free Electron Laser (FEL). Furthermore, the SR can also be used to monitor the beam current and thus be effectively implemented as a beam current monitor. In the following chapter the extent of applicability of such a device is explored.
        Speaker: Prajwal Mohanmurthy (PSI / MIT)
      • 18:00
        MuSim, a Graphical User Interface for Multiple Simulation Programs 2h
        MuSim is a new user-friendly program designed to interface to many different particle simulation codes, regardless of their data formats or geometry descriptions. It presents the user with a compelling graphical user interface that includes a flexible 3-D view of the simulated world plus powerful editing and drag-and-drop capabilities. All aspects of the design can be parametrized so that parameter scans and optimizations are easy. It is simple to create plots and display events in the 3-D viewer (with a slider to vary the transparency of solids), allowing for an effortless comparison of different simulation codes. Simulation codes: G4beamline, MAD-X, and MCNP; more coming. Many accelerator design tools and beam optics codes were written long ago, with primitive user interfaces by today’s standards. MuSim is specifically designed to make it easy to interface to such codes, providing a common user experience for all, and permitting the construction and exploration of models with very little overhead. For today’s technology-driven students, graphical interfaces meet their expectations far better than text-based tools, and education in accelerator physics is one of our primary goals.
        Speaker: Dr Roberts Thomas (Muons, Inc.)
      • 18:00
        Nanotube Channeling Acceleration – TeV/m on Chip 2h
        Crystals behave like a non-equilibrium medium (e.g. plasma), but at a relatively low temperature, if heated by a high-power driving source. The warm dense matter contains many more ions (n0 ~ 10^19 – 10^23 cm^-3) available for plasma acceleration than gaseous plasmas, and can possibly support electric fields of up to 30 TV/m of plasma oscillation [1 - 4]. Atomic lattice spaces in solid crystals are known to consist of 10 – 100 V/Å potential barriers capable of guiding and collimating high energy particles with continuously focused acceleration/deceleration by the exceptionally high electromagnetic fields. Nanostructured crystals (e.g. carbon nanotube) with dimensional flexibilities can accept a few orders of magnitude larger phase-space volume of channeled particles than natural crystals. Our PIC simulation results [5, 6] obtained from two plasma acceleration codes, VORPAL and EPOCH, indicate that in the linear regime (nb ≤ n0) the beam-driven and laser-driven electrons channeled in a 100 micrometer long effective nanotube gain 10 MeV (G = 1 – 10 TeV/m). Experimental tests, including slit-mask beam modulation and pump-probe electron diffraction, are designed in Fermilab and NIU to identify a wakefield effect in a photo-excited crystal. Acknowledgement This work was supported by the DOE contract No.DEAC02-07CH11359 to the Fermi Research Alliance LLC. We also thank the FAST Department team for the helpful discussions and technical support. References [1] T. Tajima, and J. M. Dawson, Phys. Rev. Lett. 43(4), 267 (1979) [2] I. Y. Dodin and N. J. Fisch, Phys. Plasmas 15, 103105 (2008) [3] L. B. Fletcher, et. al., Nature Photonics 9, 274 (2015) [4] T. Tajima, Eur. Phys. J. 223, 1037 (2014) [5] Y. M. Shin, Appl. Phys. Lett. 105, 114106 (2014) [6] Y. M. Shin, Dean A. Still, and Vladimir Shiltsev, Physics of Plasmas 20, 123106 (2013)
        Speaker: YOUNG-MIN SHIN (Northern Illinois University)
      • 18:00
        Naturalness problem : Off the Beaten Track - connection with Diphoton excess at 750 GeV 2h
        One of the ways to address the fine-tuning problem of Higgs mass in the Standard Model is to assume the existence of some symmetry which keeps the quantum corrections to the Higgs mass to a manageable level. This condition, known after Veltman who first propounded it, is unfortunately not satisfied in the SM, given that we know all the masses. We discuss how one can get back the Veltman Condition if one or more gauge singlet scalars are introduced in the model. Furthermore, the fine-tuning problem of the new scalars necessitates the introduction of vectorlike fermions. Thus, singlet scalar(s) and vector fermions are minimal enhancements over the Standard Model to alleviate the fine-tuning problem. We also show that the model predicts Landau poles for all the scalar couplings, whose positions depend only on the number of such singlets. Thus, introduction of some new physics at that scale becomes inevitable. We also suggest that the recently observed diphoton excess at 750 GeV comes from a quasi-degenerate bunch of gauge singlet scalars produced and decaying through one or more vector-like fermions. This explains the broad nature of the resonance, even though the decay is loop-mediated. At the same time, the model keeps the new Yukawa couplings in the perturbative region, which is necessary for the stability of the potential. Some more such extensions, with higher scalar multiplets like complex scalar triplet and Two Higgs Doublet , will also be discussed in the context regarding the Fine-tuning problem.
        Speaker: Ms Indrani Chakraborty (University of Calcutta, India)
      • 18:00
        Near-Far Neutrino Beam Correlations for the DUNE Experiment 2h
        In the DUNE long-baseline neutrino experiment, the Near Detector near to the beamline sees a high neutrino flux, which helps to characterize the neutrino beam. Given a prediction for the neutrino flux at the Near Detector, the unoscillated flux at the Far Detector can be predicted and a transfer matrix constructed. We present results from a beam matrix method to predict the Far Detector flux from the Near Detector flux for the DUNE beamline and studies of the sensitivity to different physics models of the flux.
        Speaker: Amit Bashyal
      • 18:00
        NEOS Detector for Reactor Antineutrinos 2h
        The NEOS experiment intends to understand the short-distance behavior of reactor neutrino oscillation. The detector has been collecting about 2000 IBD events per day, since its operation was stabilized in September 2015. We present the design and the performance of the NEOS detector. Especially, the mixing recipe of the liquid scintillator will be introduced, which was tuned well enough to reduce the level of background. The signal-to-background ratio reached over 20. We will show the energy reconstruction procedure including the source calibration and a tuning result of the GEANT4 simulation for the position dependence.
        Speaker: Mr Youngju Ko (Chung-Ang University)
      • 18:00
        Neutral Current Pi0 interactions in MicroBooNE 2h
        MicroBooNE is a 89 t active volume liquid argon TPC that has been collecting neutrino data in the Booster Neutrino Beamline at Fermilab since October 2015. The experiment is designed to study the low energy excess of electromagnetic events observed by MiniBooNE and to measure a large suite of cross sections in argon with an average neutrino energy of about 800 MeV. In recent years interest has grown for precise neutrino – nucleus cross sections. In particular, a measurement of the neutral current single $\pi^{0}$ cross section in argon is important as it forms a non-negligible background for $\nu_{e}$ appearance searches at MicroBooNE and other liquid argon based experiments. The neutral current $\pi^{0}$'s cross section is infrequently measured in many experiments due to many detector constraints. This poster will address some of the challenges associated with identifying and reconstructing neutral current $\pi^{0}$ interactions in MicroBooNE. It will address steps towards a fully automated reconstruction and selection process, and discuss prospects for upcoming cross section measurements of this channel.
        Speaker: Ryan Grosso (University of Cinbinnati)
      • 18:00
        Neutrino Astrophysics in Hyper-Kamiokande 2h
        Hyper-Kamiokande (Hyper-K) is a next generation large water Cherenkov detector. It is planned to be an order of magnitude larger than predecessor experiments, and high performance with improved PMTs. The major physics targets in Hyper-K are elucidation of the GUT and the evolution of the universe through an investigation of proton decay and CP violation, together with astronomical investigation with neutrinos. Recently, we optimized the detector design considering physics sensitivities, cost, construction period, and maintenance. The sensitivities in neutrino astrophysics are important inputs in the optimization process for the new detector design. In Hyper-K, the statistics of observed neutrino events will be significantly enhanced. Astrophysical neutrinos, such as the supernova burst neutrinos, supernova relic neutrinos, and solar neutrinos, will be studied much more precisely, and they will provide us new knowledge on astrophysics and particle physics. In this talk, we will demonstrate the expected detector performance in the new detector design using MC simulations and dedicated event-reconstruction tools. Based on the estimated performance, we will discuss the potential for developing neutrino astrophysics in Hyper-K.
        Speaker: Luis Labarga (Departam.de Fisica Teorica)
      • 18:00
        Neutrino physics discovery potential at the FCC 2h
        The European Laboratory for Particle Physics, CERN, is presently studying a Future Circular Collider Complex (FCC), which includes a 100 TeV pp collider as ultimate goal, and high-luminosity Z, W, H and top e+e- factory (√s = 90-370 GeV) as a possible first step. The extremely large rates of Z and W production at both machines open the possibility to observe the right-handed partners of the neutrinos. The sensitivity as a function of mass and couplings is extends all the way down to the see-saw limit for the mass range between 20 and 80 GeV. The complementarity of observations in Z decays and in W decays is discussed.
        Speakers: Alain Blondel (Universite de Geneve (CH)), Elena Graverini (Universitaet Zuerich (CH)), Mikhail Shaposhnikov (EPFL), Nicola Serra (Universitaet Zuerich (CH)), Oliver Fischer (u)
      • 18:00
        New gas electron-multiplier detectors for the innermost stations of the endcap muon system of the CMS experiment: design, prototype performance, and installation 2h
        The high luminosity operation of the LHC will require new detectors in the CMS endcap muon system to suppress the trigger rate of background events, to maintain high trigger efficiency for low transverse momentum muons, and to enhance the robustness of muon detection in the high-flux environment of the endcap. We report on recent progress towards implementing a new system of large-area, triple-foil gas electron-multiplier (GEM) detectors with geometric acceptance in the pseudo-rapidity region 1.6 < eta < 2.2. The detectors reported here will be installed in (what will be) the second of five muon detector stations in each endcap, the first station being closest to the interaction point. We describe the design of the chambers and readout electronics and report on the performance of a prototype system in tests with cosmic ray muons and extracted high-energy particle beams. We describe plans to install a prototype system in the CMS experiment in 2017, with subsequent operation during the current Run 2 of the LHC. The full system for the second endcap stations will be installed in the long shutdown planned for 2018-2019, ready for subsequent operation in Run 3.
        Speaker: Brian Dorney (CERN)
      • 18:00
        New micropattern gas detectors for the endcap muon system of the CMS experiment at the high-luminosity LHC 2h
        For the era of the high-luminosity LHC, new detectors are planned to enhance the performance of the endcap muon system of the CMS detector. We report on two types of these detectors that will be installed during the third long shutdown (LS3) of the LHC. In the pseudo-rapidity region 1.6 < eta < 2.4, new triple-foil large-area gas-electron multiplier (GEM) detectors will be installed in the third of five detector stations in each endcap, the first station being closest to the interaction point. These GEM detectors are in addition to ones that will have already been installed in the second station during LS2. We present a design for the third station detectors that must cover a larger geometrical area than those in the second station, while maintaining good performance for efficiency and spatial resolution. A new innermost (first) detector station will be installed in the endcaps to extend the range of muon identification up to about eta = 3.0. We describe the geometrical constraints and particle fluxes at the first station. The detector technologies under consideration include fast-timing micropattern (FTM) structures that can tolerate large particle fluxes and provide good time resolution. FTM detectors employ multiple layers of resistive-coated kapton foils with either hole or mesh electron multiplication structures. We report on the performance of prototype FTM devices for efficiency, space and time resolution measured using X-rays, cosmic-ray muons, and extracted high-energy particle beams.
        Speaker: Cesare Calabria (Universita e INFN, Bari (IT))
      • 18:00
        NO$\nu$A Muon Neutrino Selection 2h

        Merged the following:

        The NuMI Off-Axis νe Appearance (NOνA) experiment utilizes the neutrino beam produced at Fermilab, Neutrinos at the Main Injector (NuMI). The experiment consists of two detectors; the Near and Far Detectors are 810 km apart. The Near Detector, located at Fermilab, determines the initial state of the neutrino beam. In this poster, a muon neutrino selection and energy estimation are presented. Data and simulation comparisons for the Near Detector are shown.

        The NuMI Off-axis electron neutrino Appearance (NOvA) can detect muon neutrinos and measure their disappearance via oscillation between the Near and Far Detectors. We will detail the latest selection methods, expected selection efficiencies, expected sample purities, and energy estimation methods for muon neutrino detection at both detectors. We will also verify all of these factors via comparison with data from the Near Detector.

        Speakers: Luke Corwin (South Dakota School of Mines and Technology), Vladimir Bychkov (University of Minnesota)
      • 18:00
        Normalization system for the Mu2e Experiment - The Stopping-Target Monitor 2h
        The Mu2e experiment, a search for Charged-Lepton Flavor Violation (CLFV), aims to measure the rate of neutrinoless muon-to-electron conversion in the coulomb field of an aluminum nucleus, $R_{\mu e} = \Gamma(\mu\mathrm{Al} \to e\mathrm{Al}) / \Gamma_{\mathrm{capture}}(\mu\mathrm{Al})$. If CLFV is not observed, we will improve the current limit by a factor 10,000. In order to reach our goal, we must measure the denominator of $R_{\mu e}$ to about the 10% level. In Mu2e, muons will be stopped in a series of thin aluminum foils known as the Muon Stopping Target. As muons are captured in excited energy levels of aluminum atoms they promptly cascade down to the $1s$ state emitting characteristic X-rays. Captured muons also produce excited nuclei which emit gamma-rays with known energies and intensities. One sub-system of the Mu2e experiment, the Stopping-Target Monitor, will measure the X- and gamma-rays using a high-purity germanium detector. To overcome the extremely high background rates and avoid severe radiation damage we place the detector far downstream of the Muon Stopping Target, employ a dipole magnet to sweep away charged particles, a series of collimators to ensure the detector only views the Muon Stopping Target, and shielding from background radiation. We present a detailed description of the sub-system design, simulation results, and the normalization measurement technique.
        Speaker: Dr Anthony Palladino (Boston University)
      • 18:00
        Nuclear modification of strange and light-flavour hadrons measured with ALICE at the LHC 2h
        The ALICE experiment at CERN was designed to study the properties of the strongly-interacting hot and dense matter created in heavy-ion collisions at the LHC energies. Hard partons propagating through such a medium are predicted to lose energy via multiple scattering and gluon radiation. As a result, the yield of final-state hadrons at high transverse momentum will be suppressed compared to the reference value from a simple superposition of incoherent proton-proton collisions. This modification of the $p_T$ spectra, quantified by the nuclear modification factor ($R_{AA}$), allows to study the parton energy-loss mechanisms and medium properties. The ALICE detector has specific and unique capabilities for measuring the production of strange and light-flavour hadrons over a wide range of transverse momentum, from pp and p-Pb interactions up to the highest-multiplicity environment of the central Pb-Pb collisions. Transverse momentum spectra at mid-rapidity for K$^0_S$, $\Lambda$, $\Xi^-$ and $\Omega^-$ (and corresponding antiparticles) have been measured both in pp and PbPb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV. Results on the corresponding $R_{AA}$ as a function of the PbPb collision centrality will be presented and compared with those for identified charged hadrons ($\pi$, K and p). Features of the observed suppression patterns for hadrons with and without strangeness content and the corresponding calculations from theoretical models will be discussed in connection with the predicted energy loss dependence on the parton mass, while the comparison of baryon and meson suppressions at high $p_T$ will be proposed as potential probe of different energy losses for quarks and gluons. Finally, $R_{AA}$ results will also be compared with the corresponding measurements carried out in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV ($R_{pPb}$), to investigate possible contributions due to cold nuclear matter (initial-state) effects.
        Speaker: Domenico Elia (INFN Bari)
      • 18:00
        Nucleon Decay searches and Indirect Detection of Dark Matter with JUNO 2h
        The Jiangmen Underground Neutrino Observatory (JUNO) is designed to resolve the neu- trino mass hierarchy by observing the survival spectrum of antineutrinos from multiple nu- clear reactors that are ∼ 53 km away in its 20 kt liquid scintillator detector. To be able to resolve the subtle oscillation cycle shifts in the survival spectrum caused by different neu- trino mass hierarchies, the JUNO detector has been designed to reach energy resolution of 3%/ E/MeV and energy scale uncertainty better than 1% for the energy range that is rele- vant for reactor antineutrinos. With such energy response performance, massive size, and ∼ 700 m rock overburden, the JUNO detector is potentially a competitive device that can be used to probe other outstanding problems beyond neutrino oscillation physics as well. In this work, we explore JUNO’s potential to solve two such problems - 1) Nucleon Decay searches, and 2) Indirect Detection of Dark Matter. Proton decays, via the kaon plus anti-neutrino channel are favored by many SUSY GUT mod- els. The current lifetime has been constrained to be greater than 5.9 × 1033 years at 90% C.L. by the massive Super-Kamiokande (Super-K) water Cerenkov detector. The JUNO detector will have a much higher detection efficiency, ∼ 65% preliminarily, for this particular channel due to its superior energy response compared to Super-K. Our preliminary analysis shows that it can surpass the current Super-K limit in 3 years of data taking. With 10 years of data, the expected background is ∼ 0.5 events. If no event is observed, it can reach 1.9 × 1034 years at 90% C.L., which is very close to the region of interest predicted by some GUT models. In the case of indirect detection of Dark Matter also, JUNO’s performance is quite remarkable. We have considered the neutrino flux resulting from DM annihilation inside the Sun via the channels χχ → τ+τ− and χχ → νν ̄. Only the muon events with track lengths greater than 5 m within the detector have been considered. For such events, the direction of muon tracks can be reconstructed with an accuracy better than 1◦. We find that JUNO’s sensitivity to spin- dependent scattering cross-section σSD is much better than the current direct detection con- χp straints. In the case of spin-independent σS I also, JUNO is competitive with direct detection χp 􏰀 experiments for mχ < 7 GeV.
        Speakers: Suprabh Prakash (Sun Yat-Sen University, Guangzhou), Prof. Wei Wang (Sun Yat-Sen University)
      • 18:00
        Observation of channeling in bent crystals at the CERN LHC 2h
        UA9 collaboration is investigating the feasibility of a crystal-assisted collimation system for future high luminosity upgrade of the CERN LHC. During a dedicated machine test in 2015, bent silicon crystals were exposed to a proton and an ion circulating beam. Two high-accuracy goniometers equipped with one bent silicon crystal each were installed in the betatron cleaning insertion of the LHC during its long shutdown LS1. Tests were performed with proton at injection energy (450 GeV/c) and at flat top (6.5 TeV/c), and with ion at injection energy (450 Z GeV/c). The strong reduction of beam losses due to nuclear inelastic interactions of protons (or ions) in the aligned crystal in comparison with its random orientation was observed demonstrating the successful channeling of particles. Measurements of cleaning efficiency of the crystal-based collimation system were also started.
        Speaker: Roberto Rossi (CERN; Università 'La Sapienza' and INFN, Roma I (IT))
      • 18:00
        Observational Properties of Feebly Coupled Dark Matter 2h
        Can dark matter properties be constrained or detected if dark matter particles do not interact with the Standard Model fields? The answer is yes. By studying both cosmological and astrophysical constraints, we show that stringent constraints on dark matter particle mass and coupling values can be derived even if the dark matter sector is uncoupled from the Standard Model sector. By taking the Higgs portal model as a representative example, we compute the total dark matter abundance from decay of a primordial dark matter condensate and nonthermal production from the Standard Model sector. We then use the Planck limit on isocurvature perturbations and different astrophysical constraints on dark matter properties to derive a novel constraint connecting dark matter particle mass and self-interaction coupling with the scale of cosmic inflation.
        Speaker: Mr Tommi Tenkanen (University of Helsinki)
      • 18:00
        On Naturalness in Type II Seesaw Models and the Heavy Higgs Masses. 2h
        In the type II seesaw model, we derive the modified Veltman Conditions and show that quadratic divergencies at one loop can be driven to zero within a region of the parameter space of the model. The latter is severely constrained by a full set of unitarity and boundedness from below conditions, and by consistency with LHC measurements of Higgs decay to diphoton. Furthermore, we analyse the naturalness implications on the heavy Higgs masses and show how it affects their ranges of variation. More specifically, we obtain stringent upper limits about 288 and 351 GeV for the charged Higgs bosons ${H^{\pm}}$ and ${H^{\pm\pm}}$ respectively, while the neutral Higgs $H^0$ and $A^0$ are found to be almost mass degenerate about 207 GeV.
        Speaker: Dr Mohamed Chabab (Cadi Ayyad University, Marrakech, Morocco)
      • 18:00
        On the diffractive photoproduction of jets in NLLA 2h
        Calculation of the impact factors for 2 and 3 jet diffractive photoproduction within the high energy OPE will be discussed. Results will be presented.
        Speaker: Andrey Grabovskiy (Budker Institute of Nuclear Physics (RU))
      • 18:00
        Operation and performance of the CMS Tracker detector during early Run II 2h
        The CMS tracker consists of two tracking devices utilizing semiconductor technology. The pixel detector comprises 66 million pixels in about 1 m2 total area. It is surrounded by the strip tracker with 10 million read-out channels in 200 m2 total area. The tracker detectors occupy the region around the center of CMS, where the LHC beams are crossed, between 4 cm and 110 cm in radius and up to 280 cms along the beam axis. They are operated in a high-occupancy and high-radiation environment created by particle collisions in the LHC. The LHC restarted in 2015 after a long shut-down period. In this talk, the challenges encountered during the recommissioning of the tracker detectors will be described, along with the operational experience during the 2015 and 2016 data taking. Details will be given on the active fraction and read-out efficiency of the detectors, as well as, its performance at high occupancy with respect to local observables, such as signal to noise ratio, resolution, and hit reconstruction efficiency. The presentation will include studies of radiation effects on the detectors' calibration and performance.
        Speaker: Gabriele Benelli (Brown University (US))
      • 18:00
        Optimization of the LBNF Beamline 2h
        Conventional neutrino beams are created by directing a high energy proton beam onto a target, focusing the resulting pions and kaons through one or more magnetized focusing horns, and allowing the focused hadrons to decay to produce neutrinos. This type of beam has many configurable parameters such as horn shapes and positions, which can be changed to create a wide variety of neutrino energy spectra. Recent advances in computing power coupled with the development of complex optimization algorithms enable identification of parameters that are precisely tuned to optimize physics parameter sensitivity. We present results of a beam optimization algorithm developed for the LBNF (Long-Baseline Neutrino Facility) beam and designed to maximize DUNE's sensitivity to neutrino CP violation. We find that several modifications to the target and horns of the beamline will yield substantial improvements to the neutrino flux and physics sensitivities. We also discuss efforts to incorporate these modifications into the LBNF design.
        Speaker: Laura Fields
      • 18:00
        Optimization of the Liquid Scintillator Composition 2h
        Nowadays, many particle detectors use the liquid scintillator (LS) as a detection medium. In particular, Water-based Liquid Scintillator (WbLS) that is a new material currently under development. It is based on the idea of dissolving the organic scintillator in water using special surfactants. This material strives to achieve the novel detection techniques by combining the Cerenkov rings and scintillation light, as well as the total cost reduction compared to pure liquid scintillator. In production of either the pure LS or WbLS an important part is to choose the fluor and shifter and their concentrations. The choice affects the spectral distribution of the light output and the detection efficiency as each photodetector has its own spectral sensitivity region. This poster will have the results of the work studying the output of the pseudocumen (PC) based LS and WbLS with the PPO and POPOP/MSB as a fluor and shifters. Both the total light yield and the spectral differences in the outputs with different amounts of components will be presented.
        Speaker: Mr Ayan Batyrkhanov (Nazarbayev University)
      • 18:00
        Optimization of the Muon Stopping Target of the Mu2e Experiment 2h
        The Mu2e experiment being constructed at Fermilab will search for the coherent neutrino-less conversion of muons to electrons in the field of an atomic nucleus. Mu2e aims to achieve a sensitivity four orders of magnitude better than previous experiments searching for this same charge lepton flavor violating transition. An essential part of the Mu2e experiment is the aluminum muon stopping target. The stopping target is responsible for the energy loss and capture of the muons to be studied and provides the material in which the muon to electron conversion can emerge by interactions with the target nuclei. In the interplay with the muon beam, the magnetic field and the active detector components such as the straw tube tracker, the muon stopping target significantly affects the achievable sensitivity of the overall Mu2e experiment. On this poster, we present the results of computational simulation studies carried out to optimize the performance of the muon stopping target.
        Speaker: Markus Roehrken (California Institute of Technology)
      • 18:00
        Overview and Future Developments of the intelligent, FPGA-based DAQ (iFDAQ) of COMPASS 2h
        COMPASS is a fixed-target experiment at the Super Proton Synchrotron (SPS) at CERN dedicated to the study of hadron structure and spectroscopy. In 2014, an intelligent, FPGA-based data acquisition system (iFDAQ) was deployed. Its hardware event builder consisting of nine custom designed FPGA-cards replaced 30 distributed online computers and around 100 PCI cards increasing compactness and scalability of the system. As a result, the iFDAQ provides higher bandwidth and better reliability. By buffering data on different levels, the system exploits the spill structure of the SPS beam and averages the maximum on-spill data rate of 1.5 GB/s over the whole SPS duty cycle to a sustained data rate of 500 MB/s. From 2015, all involved point-to-point high-speed links between front-end electronics, the hardware event builder, and the readout computers are wired via a fully programmable crosspoint switch. This enables the user to remotely customize the network topology via a dedicated software when data taking is interrupted and hence simplifies compensation for hardware failure and optimization for load balancing. In a second step, the intelligent hardware will recognize load imbalance and malfunctioning hardware nodes by itself and will automatically replace broken nodes or initiate reconfiguration for optimum load balance. By distributing the needed information synchronously via the trigger and timing network, the highly reliable intelligent event builder can change its topology on-the-fly. The talk focuses on the performance of the system under data taking conditions and outlines the future upgrades for an intelligent system.
        Speaker: Dominik Steffen (Technische Universitaet Muenchen (DE))
      • 18:00
        Overview of the background reduction techniques applied in the SoLid experiment 2h
        SoLid is a very short baseline reactor antineutrino experiment, designed to investigate the sterile neutrino hypothesis. The measurement of the reactor antineutrino flux is based on the detection of an inverse beta decay (IBD) reaction in which the antineutrinos interact with a proton from the detector material. This IBD event results in a positron that creates scintillation light in the SoLid detector's PVT cubes and a neutron that is captured, after thermalization, by a 6Li doped ZnS layer which results in a second, delayed light signal. The fact that the SoLid experiment is located in the close proximity of a nuclear reactor brings along some typical types of backgrounds. Examples of these are environmental neutrons and reactor gamma rays, of which the latter generate a high level of accidental background, since their signature can hardly be discriminated from an IBD positron interaction. Secondly, because the experiment is conducted without overburden, an important background component is induced by cosmic muons. These high energetic particles create spallation neutrons in or close to the detector and consequently contribute to the correlated backgrounds of the experiment. Therefore, a large part of SoLid analyses focusses on techniques to tackle these various types of backgrounds. This poster will show a comprehensive overview of the background reduction methods, like they were applied on the first data set of the SoLid experiment.
        Speaker: Ianthe Michiels
      • 18:00
        Performance of Jet reconstruction in CMS at 13 TeV 2h
        We report on the performance of jet reconstruction, both offline and online, in CMS during the LHC Run 2. The jet energy scale and resolution measurements are performed on a data sample collected from proton-proton collisions at a center-of-mass energy of 13 TeV. The calibration is extracted from data and simulated events and employs combination of several channels and methods. We also report on boosted object tagging, which is particularly relevant for searches for new physics. Finally we discuss techniques to identify and reject jets originating from pileup and to discriminate between jets originating from quarks or gluons.
        Speaker: John Strologas (University of Ioannina (GR))
      • 18:00
        Performance of Monte Carlo Event Generators for the Production of Boson and Multi-Boson States ATLAS Analysis 2h
        The Monte Carlo setups used by ATLAS to model boson+jets and multi-boson processes in 13 TeV pp collisions are described. Comparisons between data and several events generators are provided for key kinematic distributions at 7 TeV, 8 TeV and 13 TeV. Issues associated with sample normalization and the evaluation of systematic uncertainties are also discussed.
        Speaker: Christian Gutschow (TU Dresden (DE))
      • 18:00
        Performance of the ATLAS Calorimeters in LHC Run-1 and Run-2 2h
        The ATLAS experiment at the Large Hadron Collider (LHC) is equipped with electromagnetic and hadronic liquid-argon (LAr) calorimeters and a hadronic scintillator-steel sampling calorimeter (TileCal) for measuring energy and direction of final state particles in the pseudorapidity range $|\eta| < 4.9$. The calibration and performance of the calorimetry system was established during beam tests, cosmic ray muon measurements and in particular the first three years of pp collision data-taking. During this period, referred to as Run-1, approximately 27~fb$^{-1}$ of data have been collected at the center-of-mass energies of 7 and 8~TeV. Following a period of detector consolidation during a long shutdown, Run-2 started in 2015 with approximately 3.9~fb$^{-1}$ of data at a center-of-mass energy of 13~TeV recorded in this year. Results on the calorimeter operation, monitoring and data quality, as well as their performance will be presented, including the calibration and stability of the electromagnetic scale, response uniformity and time resolution. These results demonstrate that the LAr and Tile calorimeters perform excellently within their design requirements. The calorimetry system thus played a crucial role in the Run-1 physics programme, and, in particular, in the discovery of a Higgs boson.
        Speaker: Blake Oliver Burghgrave (Northern Illinois University (US))
      • 18:00
        Performance of the ATLAS Tau Trigger in Run 2 2h
        Tau leptons are used in a range of important ATLAS physics analyses, including the measurement of the SM Higgs boson coupling to fermions and searches for Higgs boson partners or heavy resonances decaying into pairs of tau leptons. Events for analyses are provided by a number of single and di-tau triggers, as well as triggers requiring tau lepton in combination with other objects. As the luminosity of  proton-proton collisions  at the LHC is going to exceed the design  of 10^34cm^-2s-1 in Run 2, the tau trigger strategies have to become more sophisticated than in Run 1. Topological selections at the first trigger level, fast tracking algorithms and improved identification requirements are the main developments to allow a large program of physics analyses with tau leptons.  The performance of the ATLAS tau trigger during the 2015 and early 2016 data taking will be presented, together with the plans for further developments envisaged during the Run 2
        Speaker: Geert Jan Besjes (University of Copenhagen (DK))
      • 18:00
        Performance of the CMS Jets and Missing Transverse Energy Trigger at LHC Run 2 2h
        In preparation for collecting proton-proton collisions from the LHC at a center-of-mass energy of 13 TeV and rate of 40MHz with increasing instantaneous luminosity, the CMS collaboration prepared an array of triggers utilizing jets and missing transverse energy for searches for new physics at the energy frontier as well as for SM precision measurements. The CMS trigger system must be able to sift through the collision events in order to extract events of interest at a rate of 1kHz, applying sophisticated algorithms adapted for fast and effective operation. Particularly important is the calibration of the trigger objects, as corrections to the measured energy may be substantial. Equally important is the development of improved reconstruction algorithms to mitigate negative effects due to high numbers of overlapping proton-proton collisions and increased levels of beam-related effects. Work by the CMS collaboration on upgrading the high-level trigger for jets and missing transverse energy for the upgraded LHC operation will be presented, along with the improved performance of these triggers.
        Speaker: Jane Nachtman (University of Iowa (US))
      • 18:00
        Performance of the Silicon Tungsten Tracker of DAMPE with proton and ion beams at CERN 2h
        The DAMPE (DArk Matter Particle Explorer), one of the five satellite missions in the framework of the Strategic Pioneer Research Program in Space Science of the Chinese Academy of Science (CAS), was successfully launched on December 17 last year. DAMPE is a powerful space telescope which has as main scientific objective the identification of possible Dark Matter signatures thanks to the capability to detect electrons and photons in a wide range of energy from 5 GeV up to 10 TeV and with unprecedented energy resolution. Moreover, the DAMPE satellite will contribute to a better understanding of the origin and propagation mechanisms of high energy cosmic rays thanks to the measurement of the flux of nuclei up to 100 TeV. Hints in the sector of high energy gamma astronomy are also expected thanks to its excellent photon detection capability. After the launch DAMPE has shown excellent performance in orbit. Currently, data is being analyzed and the first results will be published soon. Here we present a detailed description of the DAMPE tracker: the Silicon-Tungsten tracKer-converter (STK). The STK was developed by an international collaboration composed of groups from University of Geneva, INFN Perugia, INFN Bari, INFN Lecce and Institute of High Energy Physics in Beijing. The STK is made of 192 ladders of about 10 cm by 40 cm, each of them is made up of four single-sided silicon strip detectors. We will report the performance of the silicon ladders in proton and ions beams during several test beam periods at the CERN SPS (Super Proton Synchrotron) in 2015.
        Speaker: Ruslan Asfandiyarov (Universite de Geneve (CH))
      • 18:00
        Phase and Power Control in Magnetron Transmitters for Superconducting Accelerators 2h
        This report describes requirements for phase and power control in the high-power magnetron transmitters allowing the suppression of parasitic phase and amplitude modulations in the Superconducting RF (SRF) cavities of accelerators. The modulations are caused by microphonics, Lorentz Force detuning (LFD), dynamic tuning errors, beam loading, etc. The methods of control in magnetron transmitters allowing the required dynamic phase and power management of magnetrons based on theory of the charge drift in magnetrons and results of the experimental study of the control are considered and discussed.
        Speaker: Dr Grigory Kazakevich (Muons, Inc.)
      • 18:00
        Physics at FCC-ee and run plan 2h
        One of the focusses of the Future Circular Collider design study is a high-luminosity and high-precision e+e- collider (FCC-ee), with energies ranging from below the Z peak to above the top quark pair production threshold. The FCC-ee is also the possible first step towards the ultimate goal, a 100 TeV hadron collider. The high luminosity allows 1012-13 Z decays, 108 W pairs, 2.106 Higgs bosons and 106 top-quark pairs to be contemplated. The experimental conditions and beam energy properties allow a very powerful physics program including high-precision measurements and search for rare processes. The status of the experimental study, including a number of challenges, will be presented
        Speaker: Alain Blondel (Universite de Geneve (CH))
      • 18:00
        Pion Production at MINERvA 2h
        Pion production is the primary process by which neutrinos are identified in running oscillation experiments such as Nova and proposed experiments such as DUNE. MINERvA has completed a variety of charged current cross section measurements of this type for CH targets. The coherent pion measurements have the final state nucleus in the ground state. This process becomes an important background in oscillation electron neutrino appearance experiments. MINERvA has published the most complete data set. The inelastic pion production cross section is much larger. This process must be modeled well in Monte Carlo simulation since it is an important signal in oscillation experiments. Here, a comprehensive data set for both pi+ and pi0 production with both neutrino and antineutrino beams are available. While pion final state interactions in the residual nucleus are the focus of the pion energy and angle data, the muon energy and angle and invariant momentum transfer provide information on the influence of the nuclear initial state. Data will be compared with theoretical calculations available.
        Speaker: Alejandro Ramirez (Universidad de Guanajuato)
      • 18:00
        Pixel Telescope to test pixel Phase II ROCs and sensors 2h
        In 2023, the LHC will be upgraded to the HL-LHC, increasing the luminosity to 5 x 10^34 cm−2 s−1. The increased luminosity will present new challenges in higher data rates and increased radiation. The CMS Phase 2 Pixel upgrade will require a high bandwidth readout system and high radiation tolerance for sensors and on-detector ASICs. Several geometries for the upgrade sensors are being considered as well as new layout geometries that include very forward pixel discs. To test these designs we build a pixel telescope for test beams. Prospective designs for the pixel telescope will be presented.
        Speaker: Caleb Arthur Fangmeier (University of Nebraska (US))
      • 18:00
        Precision Measurement of the Reactor Antineutrino Spectrum with PROSPECT 2h
        PROSPECT, the Precision Reactor Oscillation and Spectrum Experiment, is a multiphase short baseline reactor antineutrino experiment that aims to probe eV-scale sterile neutrinos and precisely measure the antineutrino spectrum generated from a Highly Enriched U-235 (HEU) reactor. In Phase-I, a 3-ton movable optically segmented Li-6 loaded liquid scintillator detector will be deployed at the High Flux Isotope Reactor at Oak Ridge National Laboratory at baselines ranging from 7-12m. With an energy resolution of < 4.5% at 1 MeV and a daily interaction rate of about 700 antineutrinos/day PROSPECT will make the highest precision measurement of an HEU reactor spectrum. In this poster, we describe PROSPECT's spectral measurement and its ability to shed light on the recently observed spectral discrepancies observed in the θ13 experiments.
        Speaker: Xianyi Zhang (Illinois Institute of Technology)
      • 18:00
        Preliminary Monte Carlo simulation study of the structure of the Galeras Volcano using Muon Tomography 2h
        Muon radiography is based on the observation of the absorption of muons in matter, as the ordinary radiography does by using X-rays. The interaction of cosmic rays with the atmosphere produce Extensive Air Showers (EAS), which provide abundant source of muons. These particles can be used for various applications of muon radiography, in particular to study the internal structure of different volcanoes edifice. We will discuss the study the different volcanoes in Colombia focusing on Galeras located 9 km from Pasto City. In this work we present the first study of the muon lateral distribution to the Pasto altitude (4276 m a.s.l.) and a preliminary simulation the volcanic cone using GEANT4. For the interaction of the cosmic rays with the atmosphere we have used the CORSIKA 74004 software with an atmosphere tropical model and QGSJETII-04 as hadronic model for the high energies and GHEISHA2002d for low energies. The analysis considers two different primary particles (proton and iron), four zenith angles (0°, 30°, 45° and 60°) with energies in the range of 1 to 100 TeV.
        Speaker: Dr Alex Tapia (Departamento de Ciencias Básicas, Universidad de Medellín)
      • 18:00
        Preliminary results of the cosmic ray study in the NUCLEON space experiment. 2h
        The orbital NUCLEON experiment is designed to measure Cosmic Ray (CR) energy spectrum and charge composition at 100 GeV – 1000 TeV and Z = 1-30 respectively. The NUCLEON apparatus structure, methods of primary CR charge and energy measurements are described. The possible systematic uncertainty sources are discussed. Preliminary CR energy spectra and charge composition are presented from the first one and a half year of data taking from orbit.
        Speaker: Leonid Tkachev (Joint Inst. for Nuclear Research (RU))
      • 18:00
        Preliminary tests of plasma cleaning as an in-situ superconducting RF cavity cleaning technique 2h
        Oxygen plasmas have shown promise for removing surface and diffused hydrocarbons from niobium in superconducting RF cavities. These techniques are strong candidates for in-situ cleaning techniques for installed accelerating cavities. The goal is to improve the performance of cavities that have degraded over time, without removing them from their cryomodule. By varying the governing parameters of the plasma, the primary cleaning method can be varied between a primarily physical process (sputtering) and a primarily chemical process. We extend this work from organic contaminants to more general contaminants, including metallic species. These preliminary tests are primarily concerned with characterizing the cleaning power of various plasma compositions. A variety of gas species are used to create different plasma compositions, including Ar, Ne, O$_2$, N$_2$, H$_2$, and He. Cleaning power is determined by performing surface characterization analysis on room-temperature niobium samples before and after plasma treatment. Samples are maintained in a clean environment between characterization and treatment, to prevent surface recontamination. Measurements of surface contamination and surface character are presented.
        Speaker: Benjamin Barber (The University of Chicago)
      • 18:00
        Probing Majorana Neutrinos at the CMS 2h
        Observing a Lepton Number Violation process (Delta L = 2) is a clear way to establish the Majorana nature of the neutrino mass. We search for a signature of same-sign dileptons and two jets from heavy neutrino decay. The latest search results for heavy Majorana neutrinos at the LHC using the CMS detector will be presented.
        Speaker: Sungbin Oh (Seoul National University (KR))
      • 18:00
        PROJECT JUNO: ADVANCING GENDER EQUALITY IN PHYSICS CAREERS IN HIGHER EDUCATION IN THE UK 2h
        The Institute of Physics (IOP) has a longstanding interest in diversity issues, particularly around the participation of girls and women in physics, who are under-represented in physics education and employment. In 2003, the Institute introduced a Site Visit scheme, in which selected panels visited physics departments and produced a dedicated report on their “gender inclusiveness”. After two years, the results of these visits were condensed into a general report: Women in University Physics Departments: a Site Visit Scheme. Building upon the best practice identified in this influential report, in 2007 the IOP established Project Juno, an award scheme that aims to promote gender equality in higher education physics departments. The Juno Principles provide a framework for specific actions to improve the participation and retention, particularly of women, in physics careers. The main aims of the scheme are to develop an equitable, open and transparent working culture in which students and staff, men and women, can all achieve their full potential; to promote open discussion of gender and other equality issues; and to encourage departments to determine priorities for action. Departments submit for the award and are assessed by an independent Panel of physicists with longstanding experience of addressing gender equality issues. There are three levels of the scheme (Supporter, Practitioner and Champion) and almost all of the 55 physics departments in the UK and Ireland are now participating, together with Research Institutes and one company. Currently, there are 22 Supporters, 14 Supporters and 15 Champions.
        Speaker: Marcella Bona (Queen Mary University of London (UK))
      • 18:00
        projecting pARTicles, a STEAM project 2h
        Agnes Chavez is a media artist based in the US (New Mexico) and involved in STEM Art Labs. An informal partnership initiated with some ATLAS physicists will develop further in 2016 through a series of workshops where Virtual Visits, Master Class material and the presence of a physicist will be gradually integrated. The project can be seen as an illustration of constructive and long term collaboration between artists, students and scientists.
        Speaker: Luis Roberto Flores Castillo (The Chinese University of Hong Kong (HK))
      • 18:00
        Prompt energy calibration at RENO 2h
        RENO (Reactor Experiment for Neutrino Oscillation) has obtained the first measured value of effective neutrino mass difference from a spectal analysis of reactor neutrino disappearance. The measurement absolutely relies on the accurate energy calibration. Several radioactive sources such as Cs137, Mn54, Ge68, Zn65, Co60 Po-Be, Am-Be, and Cf-Ni, are used for the energy calibration of the RENO detectors. We obtained an energy conversion function from observed charges to prompt signal energy whch describes a non-linear response due to the quenching effect in liquid scintillator and Cherenkov radiation. We have verified the performance of the energy calibration using copious beta-decay events from radioactive isotopes B12 that are produced by cosmic-muon interaction. The energy calibration was performed for the target and gamma-catcher regions separately due to their different energy responses. In this presentation we describe the methods and results of the energy calibration.
        Speaker: SANG YONG KIM (Seoul National University)
      • 18:00
        QCD analyses with xFitter 2h
        An accurate knowledge of the Parton Distribution Functions (PDF) plays a critical role for the precision tests of the Standard Model (SM) and impact substantially the theory predictions of Beyond SM high mass production. We present the xFitter project (former HERAFitter) which provides a unique open-source software framework for the determination of the proton's PDFs and for the interpretation of the physics analyses in the context of Quantum Chromodynamics. We highlight the new xFitter software release which includes many new features and additions, e.g. the possibility of the inclusion of photon PDF, updated variable and fixed-flavour schemes for heavy quarks, interface to the APFEL library and n-space evolution program MELA, updates to the latest theory calculations, fast grid tools and many more. We will also report the highlighted results based on the xFitter functionalities, as well as novel studies performed by xFitter.
        Speaker: Alexander Glazov (Deutsches Elektronen-Synchrotron Hamburg and Zeuthen (DE))
      • 18:00
        Quark and Gluon collinear and TMD parton distributions from HERA DIS data 2h
        We describe a new approach to solve the coupled quark and gluon evolution DGLAP evolution equations with a Monte Carlo method. We show that this method is equivalent to other methods. We apply this method to extract quark and gluon parton densities collinear and as transverse momentum dependent (TMD) distributions using the precision HERA DIS data. The Monte Carlo method for the solution of the evolution equation allows to estimate also large x threshold resummation effects.
        Speaker: Hannes Jung (Deutsches Elektronen-Synchrotron (DE))
      • 18:00
        Quasiparticle boundary transmission between aluminum and tungsten 2h
        Phonon energy generated by an incident particle that scatters in a CDMS Si or Ge crystal gets absorbed by Transition Edge Sensors patterned on the surfaces of the crystals. These phonon sensors (TES/QETs) consist of overlapping thin films of superconducting aluminum and tungsten. Phonons created in the bulk of the detector propagate to the detector surfaces where they break Cooper pairs in the aluminum film and generate quasiparticles (qps). These qps diffuse and get trapped in the aluminum / tungsten overlap region of the sensors, where the energy band-gap is lower, before getting thermalized in the tungsten transition edge sensors and read-out as our signal. Sensor thin-film quality and the width of the overlap region influence the overall phonon energy collection efficiency. In this poster, we present results from a series of precision x-ray experiments in which the width of the aluminum / tungsten overlap region was varied in a systematic manner. Our results are being fed into the design of SuperCDMS SNOLAB low-mass WIMP detectors.
        Speaker: Dr Jeffrey Yen (Stanford Physics)
      • 18:00
        R&D towards future upgrade of the CMS RPC system 2h
        The CMS experiment, located at the CERN Large Hadron Collider, has a redundant muon system composed by three different detector technologies: Cathode Strip Chambers (in the forward regions), Drift Tubes (in the central region), and Resistive Plate Chambers (both its central and forward regions). All three are used for muon reconstruction and triggering. However the high pseudo-rapidity region of CMS muon system is covered only by Cathode Strip Chambers (CSC) and lacks redundant coverage despite the fact that it is a challenging region for muons in terms of backgrounds and momentum resolution. In order to maintain good efficiency for the muon trigger in this region additional Resistive Plate Chambers (RPCs) are planned to be installed. RPCs with fine granularity and high timing resolution will be used to mitigate the background effects and complete the redundancy of the system. The ongoing R&D activities will be presented in the talk.
        Speaker: Gabriella Pugliese (Universita e INFN, Bari (IT))
      • 18:00
        Radiation damage to scintillators in the CMS experiment 2h
        The experiments at the LHC are expected to accumulate up to 300 fb-1 of data before the major upgrades, known as the “phase II “ upgrades, are installed. In this talk, we present studies on the longevity of the active materials used in the barrel and endcap hadronic calorimeters. We present results of in situ measurements of the light output as a function of integrated luminosity and studies of light output as a function of dose using various other sources of irradiation both for the current materials and for potential alternative materials which are less susceptible to radiation damage. We present results on jet resolutions as a function of dose, including schemes to mitigate the impact of the reduced light output, such as increased segmentation of the active material readout.
        Speaker: Sarah Eno (University of Maryland (US))
      • 18:00
        Radioactive source deployment system for the calibration of the SuperNEMO detector 2h
        An automatic source deployment system has been developed to introduce radioactive sources into the SuperNEMO detector for the purpose of calibration. A series of 6 plumb bobs are hung from long wires which contain a number of well characterized sources throughout their length. These sources are introduced using 6 stepper motors in a fully automated process which is both prompt and accurate. The position of the plumb bobs is known using a series of laser sensors which can stop the plumb bobs with a precision of $120\mu m$. Control and monitoring of the system is achieved using a National Instruments compactRIO which allows visual feedback through a graphical interface as well as remote access.
        Speakers: Josh Bryant (University of Texas at Austin), Mr Ramon Salazar (University of Texas at Austin)
      • 18:00
        Reactor spectral rate and shape measurement in Double Chooz detectors 2h
        Recently, a new generation of reactor-based neutrino experiments aiming to measure the ɵ13 mixing angle characterizing the neutrino oscillation phenomena was developed. For this purpose, the Double Chooz experiment is looking for a disappearance of the antineutrinos emitted by the two 4.25 GWth Pressurized Water Reactor cores of the Chooz power plant in the French Ardennes. In this view, two identical detectors detecting the antineutrinos via inverse beta decay reaction are installed at different baselines of the cores (400m and 1050m). For the first phase of the experiment, in which only the far detector was taking data, an antineutrino spectrum prediction based on full core simulations of the cores was achieved. In 2015, Double Chooz reported a distortion above 4 MeV in the IBD spectrum observed in the far detector compared to the prediction. This deviation from the flux prediction cannot be explained by the ɵ13 driven oscillation. At the same time, Double Chooz completed the construction of the near detector allowing a precise measurement of reactor antineutrino spectrum emitted by the cores. This poster presents the latest Double Chooz results about the shape and rate of the antineutrino measurement in the near and the far detectors. A comparison of these spectra with the reactor-based model will be also presented and discussed.
        Speaker: Daniel Kaplan (Illinois Institute of Technology)
      • 18:00
        Real-time flavour tagging selection in ATLAS 2h
        In high-energy physics experiments, online selection is crucial to select interesting collisions from the large data volume. ATLAS b-jet triggers are designed to identify heavy-flavour content in real-time and provide the only option to efficiently record events with fully hadronic final states containing b-jets. In doing so, two different, but related, challenges are faced. The physics goal is to optimise as far as possible the rejection of light jets, while retaining a high efficiency on selecting b-jets and maintaining affordable trigger rates without raising jet energy thresholds. This maps into a challenging computing task, as tracks and their corresponding vertices must be reconstructed and analysed for each jet above the desired threshold, regardless of the increasingly harsh pile-up conditions. We present an overview of the ATLAS strategy for online b-jet selection for the LHC Run 2, including the use of novel methods and sophisticated algorithms designed to face the above mentioned challenges.  The performance in Run 2 data, including the highest centre of mass energy collision, is shown. The ATLAS FastTracKer (FTK) system does global track reconstruction after each level-1 trigger to enable the high-level trigger to have early access to tracking information. We present the status of the FTK commissioning (expected to be completed in 2016) and discuss how the system can be exploited to improve the current b-jet trigger performance.
        Speaker: John Alison (University of Chicago (US))
      • 18:00
        Recent astroparticle physics results from ALICE-LHC at CERN 2h
        Recent astroparticle physics results from ALICE-LHC at CERN Abstract A. Fernández Téllez*, for the ALICE Collaboration ALICE is one of four large experiments at the CERN Large Hadron Collider. Located 52 meters underground with 28 meters of overburden rock, it has also been used to detect atmospheric muons produced by cosmic-ray interactions in the upper atmosphere. We present the multiplicity distribution of muons for these cosmic-ray events and their comparison with Monte Carlo simulation. This analysis exploits the large size and excellent tracking capability of the ALICE Time Projection Chamber. Special emphasis is given to the study of high multiplicity events containing more than 100 reconstructed muons and corresponding to a muon areal density larger than 5.9 m-2. Similar high muon multiplicity events have been studied in previous underground experiments such as ALEPH and DELPHI at LEP. While these experiments were able to reproduce the measured muon multiplicity distribution with Monte Carlo simulation at low and intermediate multiplicities, they failed to reproduce the frequency of the highest multiplicity events. We demonstrate that the high muon multiplicity events observed in ALICE stem from primary cosmic rays with energies above 1016 eV. The frequency of these events can be successfully described by assuming a heavy mass composition of primary cosmic rays in this energy range and using the most recent hadronic interaction models to simulate the development of the resulting air showers. This observation narrows the scope to alternative, more exotic, production mechanisms for these events.
        Speaker: Prof. Arturo Fernández Téllez (Universidad Autonoma de Puebla)
      • 18:00
        Recent progress on luminosity calibration at the LHCb experiment 2h
        Measuring cross-sections at the LHC requires the luminosity to be determined accurately at each centre-of-mass energy $\sqrt{s}$. The ALICE, ATLAS, CMS and LHCb experiments use the Van der Meer (VDM) method to determine the luminosity. In addition, LHCb uses a novel method based on beam-gas imaging (BGI) to perform a complementary calibration. Considerable effort has been invested at the LHC in the past few years to understand systematic limitations and improve the precision of such calibrations down to the level of 1-2%. Transverse beam shape non-factorizability has been found to be one of the limiting factors, along with the length scale calibration, beam stability and fit models. Here, an overview of the most recent findings on luminosity calibration from the ALICE, ATLAS, CMS and LHCb experiments in p-p collisions ($\sqrt{s}$ = 13 and 5 TeV) and Pb-Pb collisions (5 TeV) is presented.
        Speaker: Colin Barschel (CERN)
      • 18:00
        Renormalization of the mass matrix in a rephasing invariant parametrization 2h
        It was pointed out that six rephasing invariant combinations can be constructed from elements of the CKM matrix $V$: $\Gamma_{ijk}=V_{1i}V_{2j}V_{3k}=R_{ijk}-iJ$, where $(i,j,k)$ is cyclic permutation of $(1,2,3)$, $R_{ijk}$ is the real part, and the common imaginary part $J$ is identified with the Jarlskog invariant. In terms of this rephasing invariant parametrization, the set of renormalization group equations (RGE) for the parameters of the mass matrix can be cast in a compact and simple form. In addition, these equations are shown to exhibit manifest symmetry under flavor permutation. We discuss approximate RGE invariants and solutions. Examples of numerical solutions are also provided.
        Speaker: Shao-Hsuan Chiu (Chang Gung University, Taiwan)
      • 18:00
        Resonance search for new physics in the photon+jet final state at 13 TeV 2h
        We conduct a study for the search of new physics in the γ + jet final state using proton-proton collision data collected by the CMS experiment at the center-of-mass energy of 13 TeV. We select events containing at least one high transverse momentum photon and one jet to search for a resonance peak in the γ + jet invariant mass distribution.
        Speaker: Varun Sharma (University of Delhi (IN))
      • 18:00
        Results and Outlook of The Aluminum Capture Experiment (AlCap) 2h
        Observation of neutrinoless muon-to-electron conversion in the presence of a nucleus would be unambiguous evidence of physics Beyond the Standard Model. Two experiments, COMET at J-PARC and Mu2e at Fermilab, will search for this process in the coming decade. Barring discovery, these experiments will provide upper-limits on this branching ratio up to 10,000 times better than previously published. COMET/Mu2e developed a joint venture, the AlCap Experiment, to measure particle emission spectra from muonic interactions in a number of materials. As a major source of background hits in COMET/Mu2e detectors, AlCap sought to measure the charged particle and neutron spectra following nuclear capture on the candidate target materials aluminum and titanium. Additionally, COMET/Mu2e are exploring normalization schemes via AlCap’s measurement of the photon spectra following both atomic and nuclear capture. Over the course of 2013 and 2015, AlCap performed three runs at the Paul Scherrer Institut in Switzerland. The first acquired preliminary data for all spectra, the second run collected only neutron and photon data, and the third primarily charged particle data. Preliminary analyses of the first two runs, already impactful for COMET/Mu2e, is presented along with a summary of the third.
        Speaker: John Quirk (Boston University)
      • 18:00
        Search for a Light Sterile Neutrino at Daya Bay 2h
        The Daya Bay reactor neutrino experiment's unique configuration of multiple baselines from six 2.9 GW$_{th}$ nuclear reactors to eight antineutrino detectors deployed in two near (effective baselines $\sim$500 m and $\sim$600 m) and one far ($\sim$1600 m) underground experimental halls makes it possible to test for oscillations to a fourth (sterile) neutrino in the $10^{-3}$ eV$^{2}<|\Delta m^{2}_{41}|<0.3$ eV$^{2}$ range. In this talk, I will present Daya Bay's latest results on the search for light sterile neutrino mixing. The relative spectral distortion due to the disappearance of electron antineutrinos was found to be consistent with that of the three-flavor oscillation model. The resulting limits on sin$^{2}2\theta_{14}$ constitute the world's best in most of the sub-eV mass region.
        Speaker: Henoch Wong (UC Berkeley)
      • 18:00
        Search for a neutral MSSM Higgs boson decaying into a pair of tau leptons at 13 TeV with the CMS experiment 2h
        A search for a neutral Higgs boson decaying into a pair of tau leptons is presented. The analysis is performed with proton-proton collision data collected with the CMS experiment in 2015 using, 2.3 fb-1 of integrated luminosity. Results are interpreted within the context of the minimal supersymmetric extension to the standard model.
        Speaker: Vallary Shashikant Bhopatkar (Florida Institute of Technology (US))
      • 18:00
        Search for a Standard Model Higgs boson produced in association with a W or Z boson decaying to bottom quarks 2h
        Latest results are presented on the search for a Standard Model Higgs boson in the WH- and ZH-associated production channel decaying to bottom quarks in the CMS detector at center-of-mass energy 13 TeV. The search is split among five channels, W(e$\nu$)H, W($\mu\nu$)H, Z($\mu\mu$)H, Z(ee)H, and Z($\nu\nu$)H. The analysis strategy and sensitivity of each individual decay channel is discussed, as well as the results for signal strength relative to the SM expectation.
        Speaker: Stephane Brunet Cooperstein (Princeton University (US))
      • 18:00
        Search for Higgs boson production in association with a top-quark pair at CMS 2h
        The top-Higgs coupling is one of the most important properties of the Higgs boson to be measured directly at the LHC. This coupling is most easily accessible through observation of Higgs production in association with pairs of top-quarks, or ttH production -- a process that has yet to be observed. Deviations from the expected ttH production cross section could indicate the influence of new physics in the top-Higgs interaction. This poster will review CMS results on ttH production from Run 1 and present the latest results from the 13 TeV dataset in Run 2.
        Speaker: Eleni Ntomari (Deutsches Elektronen-Synchrotron (DE))
      • 18:00
        Search for High-mass Resonances in Z(ll)gamma Final State at CMS 2h
        A search for a heavy resonance decaying to Zgamma, with the Z boson further decaying to pairs of electrons or muons is presented. The search strategy is to look for an excess above the non-resonant background on the ll+gamma invariant mass spectrum. The search is based on the data collected with the CMS detector during Large Hadron Collider (LHC) 13 TeV run.
        Speaker: Kyungwook Nam (Seoul National University (KR))
      • 18:00
        Search for narrow high-mass resonances in proton–proton collisions at 8 TeV decaying to a Z and a Higgs boson 2h
        We present the final results of a search in the CMS detector at LHC for high-mass and narrow resonances decaying into a Higgs and a Z SM bosons in the final state with a pair of tau leptons and a pair of quarks. In the resonance mass range of interest 1.0 - 2.5 TeV, the Z and Higgs bosons are produced with large momenta compared with their masses, which implies that the final products of the two quarks or the two taus must be detected within a small angular separation. From a combination of all possible decay modes of the tau lepton, heavy spin-1 resonances production cross sections are excluded at 95 % C.L. in a range between 0.9 and 27.8 fb, depending on the resonance mass. This analysis is in the context of many searches for heavy resonances decaying into dibosons in the CMS experiment, studying 19.7/fb of integrated luminosity of sqrt(s) = 8 TeV proton-proton collisions.
        Speaker: Cesar Bernardes (UNESP - Universidade Estadual Paulista (BR))
      • 18:00
        Search for new resonances in the merged jet + dilepton final state in CMS 2h
        We present a search for resonances decaying into pairs of vector bosons with the latest proton-proton data at a centre-of-mass energy of 13 TeV delivered by the LHC and collected by the CMS experiment. This analysis focus on the search for resonances decaying into WZ and ZZ final states, where one of the bosons decays into dimuon/dielectron final states, and the other boson decays into a fully hadronic final state. The existence of heavy resonances is a prediction of many Beyond Standard Model theories, and models predicting spin 2 and spin 1 particles are used as benchmarks for this search. The high mass of the new resonance leads to the the occurrence of "merged" jets in the detector, and jet substructure techniques are used to identify those objects.
        Speaker: Jose Cupertino Ruiz Vargas (UNESP - Universidade Estadual Paulista (BR))
      • 18:00
        Search for QCD Instanton-Induced Processes in DIS at HERA 2h

        Signals of QCD instanton-induced processes are searched for in
        deep-inelastic scattering (DIS) at the electron-proton collider HERA in the kinematic region defined by the Bjorken-scaling variable $x> 0.001$, the inelasticity $0.2< y< 0.7$ and the photon virtuality $150< Q^2<15000$ GeV$^2$. The search is performed using H1 data corresponding to an integrated luminosity of 350 pb$^{-1}$. Several observables of the hadronic final state of the events are exploited to identify a potentially instanton-enriched domain. Two Monte Carlo models, RAPGAP and ARIADNE, are used to estimate the background from the standard DIS processes, and the instanton-induced scattering processes are modeled by the program QCDINS. In order to extract the expected signal a multivariate data analysis technique is used. Exclusion limits on instanton production are reported, excluding cross sections larger than 2 pb. Limits are also reported as a function of parameters used to regularize the perturbative instanton model.

        Speaker: Collaboration H1 (DESY)
      • 18:00
        Search for scalar top quark production in all hadronic channel 2h
        We present the result of a search for production of scalar top quark in fully hadronic final states using 13 TeV proton-proton collision data collected by the CMS detector at the LHC, corresponding to an integrated luminosity 2.3fb^-1 . We search for scalar top quarks decaying directly to stable neutralinos and top quarks which subsequently decay in all-hadronic state with multiple jets and large missing transverse momentum. Sensitivity to the potential signal, over a range of scalar-top and neutralino masses is obtained by classifying events into bins defined in term of large missing momentum, MT2, the number of bottom quark and hadronic top quark reconstructed with a top-quark tagger.
        Speaker: Koushik Mandal (National Institute of Science Education and Research (IN))
      • 18:00
        Search for Standard Model Production of Four Top Quarks 2h
        A search is presented for standard model (SM) production of four top quarks in pp collisions at the LHC. Using Run-2 data corresponding to an integrated luminosity of 2.6$fb^{-1}$, a combination of kinematic reconstruction and multivariate techniques is used to distinguish between the small signal ($\sigma^{SM}_{t \bar{t} t \bar{t}} \sim 9 fb$) and backgrounds in the dilepton + jets channel. A combination with the lepton + jets channel is also presented.
        Speaker: Jesse Alan Heilman (University of California Riverside (US))
      • 18:00
        Search for supersymmetry in pp collisions at 13 TeV in the single-lepton final state using the sum of masses of large radius jets 2h
        Results are reported from a search for supersymmetric particles in pp collisions in the final state with a single, high pT lepton; multiple jets, including at least one btagged jet; and large missing transverse momentum. The data sample corresponds to 2.1 fb-1 recorded by the CMS experiment at ps = 13 TeV. The search focuses on processes leading to high jet multiplicities, such as gluino pair production with the gluino decaying to top quarks. The quantity MJ, defined as the sum of the masses of the large-radius jets in the event, is used in conjunction with other kinematic variables to provide discrimination between signal and backgrounds and as a key part of the background estimation method. Competitive exclusion limits are obtained.
        Speaker: Ryan Edward Heller (Univ. of California Santa Barbara (US))
      • 18:00
        Search for supersymmetry with the vector boson fusion topology in proton-proton collisions at $\sqrt{s}=8$ TeV 2h
        The Vector Boson Fusion (VBF) topology offers a promising avenue for the study of electroweak sector of supersymmetry. The first search for supersymmetry with VBF topology is presented using 19.7$fb^{-1}$ of pp collision data at $\sqrt{s}=8$ TeV collected with the CMS detector. The search targets the final states with at least two leptons, large missing transverse momentum, and two jets with a large separation in rapidity. The observed dijet invariant mass spectrum after the final selections is found to be consistent with the expected standard model predictions, hence the upper limits are set for the production of charginos and neutralinos with two associated jets, assuming the supersymmetric partner of the $\tau$ lepton to be the lightest slepton and the lightest slepton to be lighter than the charginos.
        Speaker: Varun Sharma (University of Delhi (IN))
      • 18:00
        Search for the production of Higgs boson in association with invisible particles, in the ATLAS detector. 2h
        Some theories predict the production of Higgs bosons in association with invisible particles. The signature of such events would be a Higgs boson associated to a large missing transverse energy. Such events are searched for in different decay modes of the Higgs boson, using about 10 fb-1 of p-p collisions at 13 TeV.
        Speaker: Andrew Hard (The University of Wisconsin-Madison)
      • 18:00
        Search for ttbar Resonances at CMS 2h
        We present a search for new massive particles decaying to a pair of top quarks with the CMS detector at the LHC. Proton-proton collision data recorded at a centre-of-mass energy of 13 TeV are used. The search is performed by measuring the invariant mass distribution of the top-quark pair and testing for deviations from the expected Standard Model background. Final states with 0 or 1 leptons are considered and the selection optimised accordingly. In the high mass ranges accessible by the LHC at these energies the top quarks are produced with high transverse momentum: the products of hadronically decaying top quarks emerge as a single jet, whereas the products of the semileptonic decay mode are characterised by the overlap of the lepton to the b jet. Specific reconstruction algorithm and selections are employed to address the identification of boosted top quark signatures. The results are presented in terms of upper limits on the model cross section. Models of Randall-Sundrum Kaluza-Klein gluon production as well as narrow and wide Z’ boson models are considered.
        Speaker: Christine Angela Mc Lean (University of California Davis (US))
      • 18:00
        Search for Vector-Like Top Quarks in the CMS detector 2h
        We present a search for pair production of a new massive vector-like top quark with charge 2/3 in single, double, and multi-lepton final states. Vector-like tops of this type have three decay channels: T → Wb, T→ tH(125GeV), T → tZ. Data were collected by the CMS detector in 2015-2016 from 13 TeV proton-proton collisions at the LHC. We set 95% confidence limits on the lower limit of vector-like top quark mass for various combinations of T quark decay branching fractions.
        Speaker: Dr Anthony Barker (Purdue University)
      • 18:00
        Searches for Lepton number violation and resonances in the K+- -->pi mu mu decays at the NA48/2 experiment 2h
        The NA48/2 experiment at CERN collected in 2003-2004 a large sample of charged kaon decays with multiple charged particles in the final state. A new upper limit on the rate of the lepton number violating decay K+- --> pi-+ mu+- mu+- obtained from this sample is reported. Searches for two-body resonances in the K+- -->pi mu mu decays (including heavy neutral leptons and inflatons) in the accessible range of masses and lifetimes are presented.
        Speaker: Karim Massri (University of Liverpool (GB))
      • 18:00
        Searches for Sterile Neutrino with NO$\nu$A 2h

        Merged the following:
        Contradictory evidence has been presented on the issue of neutrino mixing between the three known active neutrinos and light sterile neutrino species. Short-baseline neutrino oscillations observed by the LSND and MiniBooNE experiments, the collective evidence of the reactor neutrino anomaly, and the gallium anomaly all point towards sterile neutrinos with mass at the 1 eV level. While these results are tantalizing, they are not conclusive as they are in tension with null results from other short-baseline experiments, and with disappearance searches in long-baseline and atmospheric experiments.

        Resolving the issue of the existence of light sterile neutrinos has profound implications for both particle physics and cosmology. The NOvA (NuMI Off-Axis νe Appearance) experiment may help clarify the situation by searching for disappearance of active neutrinos from the NuMI (Neutrinos from the Main Injector) beam over a baseline of 810 km.

        In this talk, we will describe a method of how NOvA can look for oscillations into sterile neutrinos, with focus on disappearance of neutral current (NC) neutrino events, will present preliminary results of these searches, and discuss their implications in supporting or constraining the existence of light sterile neutrinos.

        Anomalous results observed by short-baseline neutrino oscillation experiments LSND and MiniBooNE, the reactor neutrino and the gallium anomalies all point towards sterile neutrinos with a mass at the 1 eV scale. The evidence remains inconclusive due to tension between null results at short-baseline experiments and disappearance measurements at long-baselines. The NOvA (NuMI Off-Axis nu_e Appearance) long-baseline experiment offers a complementary probe of sterile neutrino mixing. The NOvA detectors have been optimized to detect electrons in order to measure electron-neutrino appearance. Extending the standard 3-neutrino framework to a 3+1 model that includes one sterile flavor and an extra mass state (v4) allows one to extend the current nu_e appearance measurement to measure NOvA's sensitivity to the extra CP-violating phases. In this talk we present NOvA's first analysis of these additional CP-violating phases and assess future discovery reach in the presence of a light sterile neutrino.

        Three-flavor neutrino oscillations have successfully explained a wide range of neutrino oscillation experiment results. However, anomalous results, such as the electron-antineutrino appearance excess seen by LSND and MiniBooNE, do not fit the three-flavor paradigm and can be explained by the addition of a sterile neutrino at a larger mass scale than the existing three flavor mass states.

        The NOvA experiment consists of two finely segmented, liquid scintillator detectors operating 14 mrad off-axis from the recently upgraded NuMI muon-neutrino beam. The Near Detector is located on the Fermilab campus, 1 km from the NuMI target, while the Far Detector is located at Ash River, MN, 810 km from the NuMI target. The NOvA experiment is primarily designed to measure electron-neutrino appearance at the Far Detector using the Near Detector to control systematic uncertainties; however, the Near Detector is well suited for searching for anomalous short-baseline oscillations and probing the LSND and MiniBooNE sterile neutrino allowed regions using a variety of final states. This talk will present a novel method for selecting samples with high purity at the Near Detector using convolutional neural networks. Based on this method, the sensitivity to anomalous short-baseline tau-neutrino appearance will be shown, and preliminary results of searches for anomalous electron-neutrino appearance and muon-neutrino disappearance at the NOvA Near Detector will be presented.

        Speaker: Dr Gavin Davies (Indiana University)
      • 18:00
        Searches for the Higgs boson in l+l- plus photon decay channels using the CMS detector 2h
        In this talk a summary of the analyses searches for Higgs boson decaying to a pair of leptons and a photon will be presented.
        Speaker: Luisa Fernanda Chaparro Sierra (Universidad de los Andes (CO))
      • 18:00
        Searching for Sterile Neutrinos with the PROSPECT Detector 2h
        PROSPECT, the Precision Reactor Oscillation and Spectrum Experiment, is a phased experiment at the High Flux Isotope Reactor in Oak Ridge National Laboratory. Phase I will consist of a movable 3-ton Li-6 loaded liquid scintillator detector with a baseline coverage from 7 to 12 meters from the reactor core. A larger, second detector during Phase II extends the baseline range to 19 meters. One of the main physics goals of the experiment is to measure electron anti-neutrino disappearance from the highly enriched uranium core in order to search for sterile neutrinos. This poster describes the predicted sensitivity and discovery potential of the experiment to eV-scale sterile neutrinos using a spectrum-based oscillation analysis.
        Speaker: Karin Gilje (Illinois Institute of Technology)
      • 18:00
        Shower maximum detectors based on pixelated micro-channel plates 2h
        Future calorimeters and shower maximum detectors at high luminosity colliders need to be highly radiation resistant and very fast. One exciting option for such a detector is a calorimeter composed of a secondary emitter as the active element. In this report we outline the study and development of a secondary emission calorimeter prototype using micro-channel plates (MCP) as the active element, which directly amplify the electromagnetic shower signal. We demonstrate the feasibility of using a bare MCP within an inexpensive and robust housing without the need for any photocathode, which is a key requirement for high radiation tolerance. Test beam measurements of the prototype were performed with 120 GeV primary protons and secondary beams at the Fermilab Test Beam Facility, demonstrating basic calorimetric measurements and precision timing capabilities. Using multiple pixel readout on the MCP, we demonstrate a transverse spatial resolution of 0.8 mm, and time resolution better than 40 ps for electromagnetic showers. Authors: A. Apresyan, S. Los, C. Pena, F. Presutti, A. Ronzhin, M. Spiropulu, S. Xie
        Speaker: Artur Apresyan (California Institute of Technology (US))
      • 18:00
        Simulation of Top Quark Production for the ATLAS experiment 2h
        The Monte Carlo setups used by ATLAS to model the $t\overline t$ and single-top production in 13 TeV pp collisions are described. The performance of different event generators is assessed by comparing measurements at 7 TeV, 8 TeV and 13 TeV to predictions from simulated data. The evaluation of systematic uncertainties and the dependence of generator predictions on the tuning parameters are also discussed.
        Speaker: Ian Allan Connelly (Royal Holloway, University of London)
      • 18:00
        Simulation, design and testing of the HT-KZ Ultra-high energy cosmic rays detector system 2h
        In the field of High Energy Physics today there are several open topics that are left. The Higgs boson has been recently discovered, neutrino oscillations are being studied, and some hints of the dark matter have been detected as well. Another remaining mystery is the origin and the nature of the Ultra-high energy Cosmic Rays (UHECR). There is an active project at Nazarbayev University to construct the HT-KZ (HorizonT-Kazakhstan) detector system in collaboration with FIAN Tyan Shan high-altitude Science Station. The full R&D is underway. A significant part of this process is the simulation, testing and construction of individual particle detectors due to the requirements of robustness and high linear range of such detectors combined with low cost and long-term operations with minimal maintenance. The poster will present the latest results of the simulation activities and hardware testing of different detection media (e.g. glass, scintillator, Cerenkov plastic) and photodetector technologies (PMT, MPPC and similar) as applicable to the HT-KZ requirements. Additionally, general information about the HT-KZ design will be presented as well.
        Speaker: Mr Alisher Duspayev (Nazarbayev University)
      • 18:00
        Simulations of High Current NuMI Magnetic Horn Striplines at FNAL 2h
        Both the NuMI beam line that has been providing intense neutrino beams for several experiments (MINOS, MINERVA, NOVA) and the newly proposed LBNF beam line which plans to produce the highest power neutrino beam in the world for the DUNE experiment need pulsed magnetic horns to focus the mesons which decay to produce the neutrinos. The high current horn and stripline design has been evolving as NuMI reconfigures for higher beam power and as LBNF produces designs for even higher beam power and horn current. The CSU particle accelerator group has aided the neutrino physics experiments at Fermilab by producing EM simulations of magnetic horns and high current striplines as part of URA in 2015. In this paper, we present calculations of the EM interaction of the stripline plates of the NuMI horns at critical stress points, using POISSON and ANSYS MAXWELL 3D codes for 200 kA of current to the horns. In addition, we give the thermal and electrical simulation results using ANSYS Electrical code. These results are being used to support the development of evolving horn stripline designs to handle increased electrical current and higher beam power for NuMI upgrades and for LBNF.
        Speaker: Taylan Sipahi (Colorado State University)
      • 18:00
        Single-Electron Event Selection Techniques for the MicroBooNE Low-Energy Excess Analysis 2h
        MicroBooNE is a neutrino experiment that utilizes a 170 t liquid argon TPC situated on the Booster Neutrino Beam line at Fermilab. The first operational part of Fermilab’s SBN program, MicroBooNE started to take beam data in October 2015. The experiment aims to unambiguously probe the nature of the low-energy excess of showering events observed by MiniBooNE.  This poster describes the classes of background events associated with a search for a low-energy electron excess analysis in MicroBooNE, as well as discussing signal selection strategies utilizing both TPC and PMT information from the detector.
        Speaker: Rui An (IIT)
      • 18:00
        Social Media strategy for the ATLAS experiment 2h
        The ATLAS collaboration uses various social media platforms to communicate the research and achievements of the collaboration to a wider public audience. The strategy to achieve this goal will be presented, with an analysis of the effectiveness as a function of certain factors. A specific focus on the social media approach during the LHC Run II time period in 2015 will be explored.
        Speaker: Dr Clara Nellist (CERN)
      • 18:00
        SOFA : a new approach for Quality Assurance in GEM FOIL 2h
        Gas Electron Multiplier (GEM) is one of the best popular and potent technologies for gaseous ionization detectors used in high energy physics. One of the fundamental elements of a GEM are foils with micro perforations and quality of such holes is determinant for an ideal performance of the GEM. Regardless of the drilling method used, it is possible to find defects, imprecisions and distortions in the geometry and distribution of the holes, disturbing the performance and quality of the detector. In this paper we compare and analyze different measures and developing different computational methods for this purpose, in order to determine the quality of GEM-foils and other micro structures from high and low resolution images of the foils. These computational techniques will provide an automatic and high accuracy alternative to the current procedures which are expensive, time taking and imprecise, restraining the development and application of this significant technology of detectors. Software named SOFA was developed and designed for inspection of GEM Foils from high and low quality images, exactly using those acquired by the Helsinki Institute of Physics and modified for some proposes in this research on Centro de Investigaciones en Ciencias Básicas y Aplicadas (CICBA) at Universidad Antonio Nariño. This tool is proposed to be a beneficial tool for physics with no programming skills and then all functionalities and directly available for an intuitive graphical user interface. The integration of geometry analysis and the incorporating of robust images algorithms enable quality assurance of GEM foils and classification in order to find defects, imprecisions and alterations in the geometry and distribution of the holes, computing measures to quantify the quality of the holes. An important quality of this procedure is that it is self-consistent; it uses the information of the image itself and does not use any external parameter, giving to the procedure enough robustness to be highly independent of the quality of the image within an ample range of image qualities. The method includes three steps: a fast procedure of initial centers identification, calculation of centroids or precise centers and contours, and finally the calculation of statistical and other quality measures. Defects are identifying with contour collection algorithm, SFR and results can be exported to spread-sheets for additional analysis. The software was entirely written in JAVA programming Language and all functionalities are invoked from an easy graphical user interface which permits the study and automatic identifying of imperfect holes in GEM Foil, to assist in decision of install this or not in the particles detector. Its multitasking programming allows processing different images simultaneously to decrease processing times. The results of the experiments presented in this work show the robustness, precision and efficiency to build basic information like centers coordinates and pixels of contour to make different measures, in addition to applying different methods to identify defects with a parameter that allows it's be adjusted to investigate and establish the criteria and values to stablish that there is a defective hole that could be affecting the functionality of the foil in the detector.
        Speakers: Cesar A RODRIGUEZ (Universidad Antonio Narino), Rafael M Gutierrez (Universidad Antonio Nariño)
      • 18:00
        SoLid technology and construction 2h
        Although the phenomenon of neutrino oscillations has been discovered more than 10 years ago, some anomalies still remain in the neutrino oscillation data [1]. One of these is the reactor antineutrino anomaly, showing a deficit of detected neutrinos from a reactor when compared to what is expected from calculated fluxes. A possible explanation would be the existence of a sterile neutrino, which is a fourth light neutrino (mass of about 1eV) that only couples to Standard Model neutrinos via oscillation at short distance [2]. To resolve these inconsistencies and test the sterile neutrino hypothesis, precise measurements very close to a reactor core need to be performed. This is the aim of the SoLid experiment. The experiment makes use of a novel detector technology based on the combination of 5cm x 5cm x 5cm PVT cubes and 6LiF:ZnS screens. This technology provides an improvement for the background rejection capabilities, the neutron identification and the localization of the inverse beta decay compared to the standard liquid scintillators + Gd detectors. During the past 2 years the SoLid collaboration has build 2 prototype detectors, NEMENIX and the SubModule1(SM1), to prove the feasibility of the detector technology. The experience of the Collaboration during the construction, commissioning and data taking with the 288kg SM1 detector will be reported and will be used to build the 1.5 ton full scale SoLid detector by fall 2016. This poster will cover the novel technology used in the SoLid experiment and will discuss the improvements made on the design and electronics for the construction of the full SoLid detector. References [1] K. N. Abazajian et al., Light sterile neutrinos: A white paper" arXiv:1204.5379 [2] G. Mention et al., The reactor antineutrino anomaly" DOI:10.1103/PhysRevD.83.073006 1
        Speaker: Celine Moortgat
      • 18:00
        Specific Heat of Matter Formed in Relativistic Nuclear Collisions 2h
        We report the excitation energy dependence of specific heat ($c_{\rm v}$) of hadronic matter at freeze-out in Au+Au and Cu+Cu collisions at the Relativistic Heavy Ion Collider energies by analyzing the published data on event-by-event mean transverse momentum ($\langle p_{\rm{T}} \rangle$) distributions. The $\langle p_{\rm{T}} \rangle$~distributions in finite $p_{\rm{T}}$~ranges are converted to distributions of effective temperatures, and dynamical fluctuations in temperature are extracted by subtracting widths of the corresponding mixed event distributions. The heat capacity per particle at the kinetic freezeout surface is presented as a function of collision energy, which shows a sharp rise in $c_{\rm v}$~below \sNN~=~62.4~GeV. We employ the Hadron Resonance Gas (HRG) model to estimate $c_{\rm v}$~at the chemical and kinetic freezeout surfaces. The experimental results are compared to the HRG and other theoretical model calculations. HRG results show good agreement with data. Model predictions for $c_{\rm v}$~at the Large Hadron Collider energy are presented.
        Speaker: Sumit Basu (Department of Atomic Energy (IN))
      • 18:00
        Sprectrophotometric Calibrations for the Dark Energy Survey 2h
        The DECal spectrophotometric calibration system is in use by the Dark Energy Survey to measure the total system throughput of the Blanco telescope and DECam camera. This system will be described along with observations of CALSPEC standard stars that are used to set the absolute flux scale for the survey.
        Speaker: William Wester
      • 18:00
        Status and performance of the CMS muon system in Run2 2h
        The CMS muon system has played a key role for many physics results obtained from the LHC Run-1 and Run-2 data. During the Long Shutdown (2013-2014), as well as during the last year-end technical stop (2015-2016), significant consolidation and upgrades have been carried out on the muon detectors and on the L1 muon trigger. The algorithms for muon reconstruction and identification have also been improved for both the High-Level Trigger and the offline reconstruction. Results of the performance of muon detectors, reconstruction and trigger, obtained using data collected at 13 TeV center-of-mass energy during the 2015 and 2016 LHC runs, will be presented. Comparison of simulation with experimental data will also be discussed where relevant. The system’s state of the art performance will be shown, and the improvements foreseen to achieve excellent overall quality of muon reconstruction in CMS, in the conditions expected during the high-luminosity phase of Run-2, will be described.
        Speaker: Andres Leonardo Cabrera Mora (Universidad de los Andes (CO))
      • 18:00
        Status of the DANSS project 2h
        The common JINR (Dubna) - ITEP (Moscow) project DANSS is aimed at creating a relatively compact neutrino spectrometer which does not contain any flammable or other dangerous liquids and may therefore be located very close to the core of an industrial power reactor. As a result, high neutrino flux provides about 15,000 IBD interactions per day in the detector with a sensitive volume of 1 m$^3$. High segmentation of the plastic scintillator allows to suppress a background down to a $\sim$1% level. Numerous tests performed with a simplified pilot prototype DANSSino under a 3 GW$_{\rm th}$ reactor WWER-1000 of the Kalinin NPP have demonstrated operability of the chosen design. The DANSS detector surrounded with a composite shield is movable on-line by means of a special lifting gear, varying the distance to the reactor core in a range from 9.7 m to 12.2 m. Due to this feature, it is used not only for the reactor monitoring, but also for fundamental research including short-range neutrino oscillations to the sterile state. Supposing one-year measurement, the sensitivity to the oscillation parameters is expected to reach a level of $\sin^2(2\theta_{\rm new})\sim5\times10^{-3}$ with $\Delta m^2 \subset (0.02-5.0)$ eV$^2$. Operation of the DANSS detector has been started in January 2016. The report will contain description of the spectrometer and the first preliminary results got in few months.
        Speaker: Dr Viacheslav Egorov (Joint Institute for Nuclear Research)
      • 18:00
        Sterile neutrino search in the Double Chooz experiment 2h
        Double Chooz is a reactor antineutrino disappearance experiment located in Chooz, France. By detecting the unique inverse beta decay (IBD) prompt-delayed signal, antineutrinos can be precisely identified. A far detector at a distance of about 1 km is operating since 2011; a near detector of identical design at a distance of about 400 m is operating since the end of 2014. This double-detector with iso-flux configuration can significantly reduce the reactor flux and detection systematics. Beyond the precise measurement of $\theta_{13}$, Double Chooz has a strong sensitivity to so called light sterile neutrinos with the systematic uncertainties of the single detector measurement highly suppressed to per mil levels. Sterile neutrino are neutrino mass states not taking part in weak interactions, but may mix with known neutrino states. This induces additional mixing angles and mass differences. This poster presents the latest results of the search for light sterile neutrinos and the mixing angle $\theta_{14}$.
        Speaker: Tsunayuki Matsubara (Japan, Tokyo Metropolitan University)
      • 18:00
        Stop-Higgsino Associated Production at a 100 TeV Collider 2h
        Light stops and Higgsinos are preferred in supersymmetry from electroweak naturalness considerations. In a well-motivated region of parameter space, stops are significantly heavier than Higgsinos, and the cross section for stop-Higgsino associated production can be significant due to the large top Yukawa coupling. In this case, searches for associated production can compete with traditional searches for stop pair production. Conversely, stop-Higgsino associated production can improve the Higgsino mass reach of future colliders even if the stop is much heavier than the Higgsino, as well as probe the thermal Higgsino dark matter scenario at a 100 TeV collider. We consider the top + jet + MET final state arising from stop-Higgsino associated production, and perform a boosted decision tree analysis at a 100 TeV proton-proton machine. We comment on the implications of the results for top tagging standards at future detectors.
        Speaker: Ahmed Ismail (Argonne National Laboratory/University of Illinois at Chicago)
      • 18:00
        Studies of ageing effects of Small-Strip Thin Gap Chambers for the Muon Spectrometer Upgrade of the ATLAS Experiment 2h
        The instantaneous luminosity of the Large Hadron Collider at CERN will be increased up to a factor of five with respect to the design value by undergoing an extensive upgrade program over the coming decade. The largest upgrade project for the ATLAS Muon System is the replacement of the present first station in the forward regions with the so-called New Small Wheels (NSWs), to be installed during the LHC long shutdown in 2019/20. Small-Strip Thin Gap Chambers (sTGC) detectors are one chosen technology to provide fast trigger and high precision muon tracking under the high luminosity LHC conditions. The basic sTGC structure consists of a grid of gold-plated tungsten wires sandwiched between two resistive cathode planes at a small distance from the wire plane. We study ageing effects of sTGC detectors with a gas mixture of 55% of CO_2 and 45% of n-pentane. A sTGC detector was irradiated with beta-rays from a Sr-90 source. Three different gas flow rates were tested. We observed no deterioration on pulse height of the sTGC up to an accumulated charge of 10 C/cm. The results of an image and chemical element analysis of the wire will also be presented.
        Speaker: Bernd Stelzer (SFU Simon Fraser University (CA))
      • 18:00
        Studies of Beam Induced Radiation Backgrounds for the Cosmic Ray Veto Detector Operations at the Mu2e Experiment 2h
        The Mu2e experiment will search for a neutrinoless muon-to-electron conversion process with almost four orders of magnitude of sensitivity improvement relative to the current best limit. One important background is caused by cosmic-ray muons and their secondaries faking the conversion electron signature. In order to reach the designed sensitivity, Mu2e needs to identify cosmic-ray muons with an efficiency of 99.99%. The Cosmic Ray Veto (CRV) detector consists of four layers of plastic scintillator which surrounds the Mu2e detector, with an area of approximately 300 square meters. The CRV must operate in the presence of large neutron and gamma fluxes produced from beam interactions. This radiation can damage the detector components and generate significant background rates in the CRV. We estimate the background rates and the total dead-time produced by these backgrounds using a simulation which includes a sophisticated model of the Mu2e apparatus and the CRV response.
        Speaker: Iuri Oksuzian (UVa)
      • 18:00
        Study of the effect of solenoid field uncertainties on the physics goals of the Mu2e experiment 2h
        The Mu2e experiment at Fermilab proposes to measure the ratio of the rate of neutrinoless coherent conversion of muons into electrons in the field of a nucleus, relative to the rate of muon capture on the nucleus. The conversion process is an example of charged lepton flavor violation. Observation of this process would provide unambiguous evidence for physics beyond the Standard Model. The design of the experiment is based on three superconducting solenoid magnets: The Production Solenoid, forming the muon beam; the Transport Solenoid, transporting muons to the detector region; and the Detector Solenoid, housing the detector complex. Uncertainties in the fields of the solenoids may arise from (i) fluctuations of the currents from the nominal values; (ii) misalignments of the coils due to mechanical and magnetic forces; or (iii) approximations in the field calculation. A study of the impact of field uncertainties on the physics goals of the experiment is presented. This study examines the effect of field uncertainties on muon and pion stopping rates in the aluminum stopping target. The possibility of testing the Transport Solenoid field with low momentum electrons is also examined, as an alternative to measuring it with field probes, which is technically difficult due to mechanical interference.
        Speaker: Ms Federica Bradascio (University of Pisa)
      • 18:00
        Summary of the HL-LHC related Civil Engineering studies and the related vibration studies 2h
        The presentation summaries the planned new underground civil engineering work for the HL-LHC upgrade project. The related work implies significant underground excavation work and studies were launched to study the impact of such underground work on the operation of the running LHC machine. The studies involved test drills, vibration excitations using shakers and the analysis of the impact of earthquakes on the LHC operation. The studies showed a beam sensitivity of up to 1micormeter and indicated that the HL-LHC excavation work would can not be conducted in parallel to the LHC operation and lead to a revised schedule and planning that foresees most of the civil engineering work during the Long Shutdown 2.
        Speaker: Paolo Fessia (CERN)
      • 18:00
        Superconducting Detector Development for the SPT-3G Cosmic Microwave Background Experiment 2h
        Transition-edge sensor (TES) bolometers continue to enable exceptionally sensitive observations of the Cosmic Microwave Background (CMB). The CMB contains the imprint of physical mechanisms occurring in both the early and late universe, making it a powerful probe of our cosmological model. CMB experiments are currently focused on measuring the B-mode polarization signature, as it has the potential to constrain inflationary gravitational waves as well as the effect of massive neutrinos on structure formation in the late universe. Technological advances in the fabrication and operation of TES bolometers have resulted in detectors that are background-limited. The instrumental sensitivity needed to further probe the faint CMB polarization signal therefore requires at least an order of magnitude more detectors than in current experiments. Additionally, galactic foregrounds are now known to produce polarized signals at a similar amplitude as the CMB making multi-wavelength observations crucial to isolating the CMB signal. The millimeter-wavelength South Pole Telescope (SPT) is dedicated to mapping the CMB. Here, we present the development of TES bolometers for the third generation SPT receiver, SPT-3G. The SPT-3G focal plane will have ~16,000 TES bolometers, an order of magnitude increase from the current receiver. The detectors are grouped into 2,710 pixels, each of which is sensitive to orthogonal linear polarizations and three frequency bands (90, 150, 220 GHz). Development of the SPT-3G pixel includes refining the properties of the superconducting microstrip, filters, and TES sensor as well as ensuring the uniformity of a large number of pixels. We discuss the architecture and current laboratory performance of these pixels as they are integrated with readout electronics into the receiver. SPT-3G will deploy to the telescope in late 2016, opening a new regime of sensitivity in mapping the CMB.
        Speaker: Amy Bender (Argonne National Laboratory)
      • 18:00
        Superworld without supersymmetry 2h
        It is a possibility that the superworld (supersymmetric partners of our world) does exist without supersymmetry. The two worlds are being distinguished by an unbroken discrete Z_2 symmetry (similar to R-parity in supersymmetry). We lose the solution to the hierarchy problem. However, such a scenario has several motivations. For example, the lightest neutral superworld particle will be a candidate for dark matter. The other being, as in supersymmetry, it is possible to achieve gauge coupling unification. One major difference with the supersymmetric theory is that such a theory is much more general since it is not constrained by supersymmetry. For example, some of the gauge couplings connecting the Standard Model particles with the superpartners now become free Yukawa couplings. As a result, the final state signals as well as the limits on the superworld particles can be modified both qualitatively and quantitatively. The reach for these superworld particles at the Large Hadron Collider (LHC) can be much higher than the superpartners, leading to the increased possibility of discovering new physics at the LHC. The model as well as its implications for new physics discovery at the LHC will be presented.
        Speaker: Prof. Satyanarayan Nandi (Oklahoma State University)
      • 18:00
        Surface Chemistry of Niobium Involving Oxygen, Hydrogen, and Nitrogen Relevant to the Performance of Superconducting RF Accelerator Cavities 2h
        Superconducting radio frequency (SRF) technology is the key enabler for current and future high-energy and high-beam-power accelerators. Performance of SRF cavities for accelerators is characterized by their quality factor, Q0, a measure of their efficiency of operation, and the maximum accelerating field, Eacc, that they can sustain before their quality factor degrades. Chemical and structural defects at the surface and in the near-surface region of niobium SRF cavities can negatively or positively affect cavity performance. We investigate the surface structure, chemistry, and oxidative states of single-crystal niobium samples as well as technical grade polycrystalline SRF cavity samples using scanning tunneling microscopy (STM and STS), atomic force microscopy (AFM), Auger electron spectroscopy (AES) and x-ray photoelectron spectroscopy (XPS). These tools allow us to study processes such as the adsorption and dissolution of common elements such as oxygen and nitrogen onto and through the niobium surface and into the bulk, and how changes in local surface structure (such as crystal face, step edges, and domain boundaries) affect these processes. At atmospheric pressure, the niobium surface is completely covered in an insulating pentoxide overlayer. At relatively low temperatures, the pentoxide is reduced and dissolves into the bulk; we present kinetic results on this process. The orientation of the single-crystal surface significantly affects surface structure following reduction and dissolution of the pentoxide. After the dissolution of Nb2O5, NbO is the thermally stable oxidative state and 3-5 layers remain on top of the bulk niobium. The NbO is thermally stable up to highly elevated temperatures where it desorbs from the surface. The orientation of the single crystal surface significantly affects the surface order exhibited by the NbO/Nb interface. The (111) face does not form long-range ordered surface structures even after high-temperature annealing for extended periods. The (100) face forms highly-organized (nx1) ladder-like features that cover the NbO(100) surface. We discuss the stability and interconversion of these ladder structures following thermal cycling with and without the presence of gas phase molecular oxygen, with particular focus on oxygen dissolution through the NbO(100) surface induced by relatively low-temperature annealing of the substrate following oxygen exposure. Inspired by recent discoveries at the Fermi National Accelerator Laboratory that involve the benefits of nitrogen-doping that enhance the operating characteristics of accelerator cavities, we also explore the possible relationship between nitrogen-doping and nanoscale hydride surface precipitation. Hydrides are known to form on cavity surfaces during cooldown to operational temperatures. These hydrides are non-superconducting and correlate strongly with diminished cavity performance. It is possible that nitrogen-doping serves as a hydrogen “trap” preventing hydrogen from migrating from the bulk to the surface during cooldown, and we investigate this possibility by studying polycrystalline samples cut from SRF cavities used at Fermi National Accelerator Laboratory. It is with pleasure that we acknowledge support from DOE and the NSF-MRSEC program at the University of Chicago.
        Speaker: Darren Veit (University of Chicago)
      • 18:00
        SUSY searches with two opposite-sign same-flavor leptons at CMS 2h
        A search is presented for physics beyond the standard model in final states with two opposite-sign same-flavor leptons, jets, and missing transverse momentum. The data sample corresponds to an integrated luminosity of 2.2 inverse fb of proton-proton collisions at sqrt{s}=13 TeV collected with the CMS detector at the CERN LHC in 2015. The analysis focuses on the invariant mass distribution of the lepton pair, searching for a kinematic edge or a resonant-like excess compatible with the Z boson mass. The kinematic edge search includes phase-space regions matching the previous 8 TeV analysis where CMS reported a 2.6 sigma excess. The resonant Z boson peak search includes a region where ATLAS reported a 3.0 sigma excess at 8 TeV. Additional event categories are included in both searches beyond those in the 8 TeV analysis to increase sensitivity to new physics. The observations in all signal regions are consistent with the expectations from the standard model, and the results are interpreted in the context of simplified models of supersymmetry.
        Speaker: Sergio Sanchez Cruz (Universidad de Oviedo (ES))
      • 18:00
        Tasting the SU(5) nature of Supersymmetry at the LHC 2h
        We discuss a recently found relation confined to the sector of up-type (s)quarks within supersymmetric SU(5) theories. We show that this relation remains stable under renormalization group evolution between the unification and the TeV scales. It thus allows to test the SU(5) hypothesis based on the observation of squarks at the LHC. We investigate the possibilities opened by this new window on the GUT scale in order to find TeV-scale SU(5) tests realizable at the LHC. These SU(5) tests appear as relations among observables involving either flavour violation or chirality flip in the up-(s)quark sector. We present a variety of tests, which appear as relations among observables involving flavour violation or chirality flips and rely on the techniques of top polarimetry, charm-tagging, or Higgs detection from cascade decays. We consider the cases of heavy Supersymmetry, natural Supersymmetry, and top-charm Supersymmetry. We find that O(10) to O(100) events are needed to obtain 50% of relative precision at 3-sigma significance for all of these tests [Phys. Lett. B 742 (2015) 69-73, JHEP 05 (2015) 091]. Finally, we will discuss a more general cas. The corresponding analysis relies on Bayesian statistics including a Markov Chain Monte Carlo study [work in progress].
        Speaker: Dr Bjorn Herrmann (Unite Reseaux du CNRS (FR))
      • 18:00
        Test Beam Studies Of Silicon Timing for Use in Calorimetry 2h
        The high luminosity upgrade of the Large Hadron Collider (HL-LHC) at CERN is expected to provide instantaneous luminosities of 5 × 10^34 cm^−2 s^−1. The high luminosities expected at the HL-LHC will be accompanied by a factor of 5 to 10 more pileup compared with LHC conditions in 2015, causing general confusion for particle identification and event reconstruction. Precision timing allows to extend calorimetric measurements into such a high density environment by subtracting the energy deposits from pileup interactions. Calorimeters employing silicon as the active component have recently become a popular choice for the HL-LHC and future collider experiments which face very high radiation environments. We present studies of basic calorimetric and precision timing measurements using a prototype composed of tungsten absorber and silicon sensor as the active medium. We show that for the bulk of electromagnetic showers induced by electrons in the range of 20 GeV to 30 GeV, we can achieve time resolutions better than 25 ps per single pad sensor. Authors: A. Apresyan, G. Bolla, A. Bornheim, H. Kim, S. Los, C. Pena, E. Ramberg, A. Ronzhin, M. Spiropulu, S. Xie
        Speaker: Si Xie (California Institute of Technology (US))
      • 18:00
        The ATLAS ALFA detector upgrade 2h
        The operation experience with ATLAS ALFA detectors in the LHC environment during the Run1 period has shown significant beam-induced heating. Subsequent comprehensive studies revealed that heating effects could be disastrous in the case of the larger beam intensities foreseen for higher luminosities in the LHC Run2. During the first LHC long shutdown (LS1) all ALFA detectors have been removed from the LHC tunnel and their covers - Roman Pots - underwent a geometry upgrade to minimize the impedance losses. It will be shown that this modification together with a system improving the internal heat transfer and an air cooling system, significantly shifted the temperatures of ALFA detectors away from the critical limits throughout the LHC Run2. Also ALFA trigger system was considerably upgraded to keep measured data safely inside the Run2 ATLAS latency budget and to minimize dead time. The needed hardware changes of the trigger system will be presented in the second part of the talk.
        Speaker: Vit Vorobel (Charles University (CZ))
      • 18:00
        The ATLAS Fast Tracker Processing Units - track finding and fitting 2h
        The Fast Tracker is a hardware upgrade to the ATLAS trigger and data-acquisition system, with the goal of providing global track reconstruction by the start of the High Level Trigger starts. The Fast Tracker can process incoming data from the whole inner detector at full first level trigger rate, up to 100 kHz, using custom electronic boards. At the core of the system is a Processing Unit installed in a VMEbus crate, formed by two sets of boards: the Associative Memory Board and a powerful rear transition module called the Auxiliary card, while the second set is the Second Stage board. The associative memories perform the pattern matching looking for correlations within the incoming data, compatible with track candidates at coarse resolution. The pattern matching task is performed using custom application specific integrated circuits, called associative memory chips. The auxiliary card prepares the input and reject bad track candidates obtained from from the Associative Memory Board using the full precision and a linearized fit. The track candidates from the auxiliary card use only 8 of 12 silicon layers, the track segments are extended to the additional layers by the Second Stage Board. During the first half of 2016, the first Fast Tracker VMEbus Processing Units will be installed in the ATLAS cavern. This talk will summarize the experience with newer associative memory chips and the boards; monitoring/debugging tools, including input/output data rates, track finding efficiency and track fitting results. Comparisons of the different metrics with offline simulation will also be shown.
        Speaker: Karol Krizka (University of Chicago (US))
      • 18:00
        The ATLAS Forward Proton (AFP) integration beam tests and detector performance 2h
        The ATLAS collaboration is currently installing the ATLAS Forward Proton (AFP) detector to measure protons scattered under a small angle from the ATLAS proton-proton interaction point. A combination of 3D Silicon pixel tracking modules and Quartz-Cherenkov time-of-flight (ToF) detectors are placed in Roman Pots 210 m away from the interaction point, at both sides of ATLAS. Beam tests with a first unified AFP prototype detector combining tracking and timing sub-detectors and a common readout have been performed at the CERN-SPS test beam facility in 2014 and 2015 to complete the system integration and study the detector performance. The successful tracking-timing integration was demonstrated. Good pixel hit efficiencies above 99% were observed. Spatial resolutions in the short pixel direction with 50 um pitch of about 6 um per pixel plane and of 3-5 um for the full 4-plane tracker at a tilt of 14 degrees were found, surpassing the AFP requirement of 10 um by a factor of 2-3. The timing detector showed also good hit efficiencies above 99%, and a full-system time resolution of 35 ps was found for a half-size ToF prototype detector with two Quartz bars in-line without dedicated optimizations, fulfilling the requirements for initial low-luminosity AFP runs. For 2016 further tests with a more final setup are planned. This presentation will give an overview on the beam test results and the current AFP detector developments.
        Speaker: Tomas Sykora (Charles University (CZ))
      • 18:00
        The CMS High Level Trigger Performance in Run 2 2h
        The CMS experiment has been designed with a 2-level trigger system: the Level 1 Trigger, implemented on custom-designed electronics, and the High Level Trigger, a streamlined version of the CMS offline reconstruction software running on a computer farm. In this presentation we will give an overview of the specific algorithms developed to cope with the increasing LHC pile-up and bunch crossing rate, keeping the physics output as efficient as possible. We will also present the performance of the trigger system measured using 13 TeV data.
        Speaker: Roberta Arcidiacono (Universita e INFN Torino (IT))
      • 18:00
        The CMS Phase 1 Upgrade Forward Pixel Detector Mechanical Support and Cooling 2h
        In 2017 the luminosity of the LHC will also be upgraded to 2E34 cm-2s-1, providing physicists a greater opportunity to seek answers to some of the particle physics mysteries we have encountered since the inception of the LHC. A new pixel detector for the CMS experiment is currently under construction, to be installed during the extended year end shutdown 2016/2017. The pixel detector, the core of the CMS detector, was commissioned in 2008 and is so far running successfully. However the higher instantaneous luminosity will cause unacceptable dynamic inefficiencies due to buffer overflows. The more complex track pattern recognition due to higher pileup will require an additional pixel detector layer to maintain good efficiency. The Phase 1 pixel detector replacement will address these shortcomings. To add an additional detector layer without adding material required a complete redesign of the mechanical support and cooling using novel materials. This contribution will cover the important aspects of the CMS Phase 1 Upgrade Forward Pixel detector mechanics and cooling that enabled a significant reduction of the overall mass while adding an extra detection layer. Challenges that had to be overcome during the design, prototype, and construction will be included.
        Speaker: Maral Alyari (State University of New York (US))
      • 18:00
        The compatibility of the LHC data with a scalar with a mass around 270 GeV and its possible connection to the X(750) excess 2h
        After the discovery of the Higgs boson in LHC Run 1, a number of excesses were seen by ATLAS and CMS collaborations. A minimalistic model with a heavy scalar $H$, predicts the kinematics of these final states and compare the prediction against data directly. A statistical combination of these results shows that a best fit point is found for a heavy scalar having a mass of $272^{+12}_{-9}$ GeV. This result has been quantified as a three-$\sigma$ effect. Recently, with the early Run 2 data, an excess in the di-photon spectrum around $750$ GeV has been reported by the ATLAS and CMS collaborations. The possibility of explaining this excess with another heavy boson with a mass of $750$ GeV, along with the $H(270)$ in the framework of the 2HDM model will be discussed.
        Speaker: Deepak Kar (University of the Witwatersrand (ZA))
      • 18:00
        The DarkSide 20k Experiment 2h
        Ed V. Hungerford for the DarkSide 20k Collaboration DarkSide-20k having a fiducial mass of 20 t, is a direct dark matter search using a 2-phase liquid argon time projection chamber. It will be surrounded by active liquid-scintillator and water-Cherenkov vetoes. Like its processor DS-50 which has demonstrated extraordinary background discrimination, DS-20k is designed for ultra-low background with careful screening and handling of all detector components. In particular, DS-20k uses 20 t of underground argon (UAr), which is essentially depleted of 39Ar, and may employ an ultrapure Ti cryostat. The argon scintillation light is detected by SiMP arrays specially designed for cryogenic operation and high quantum efficiency. DS-20k will be housed at the Gran Sasso (LNGS) underground laboratory, where it is expected to attain a WIMP-nucleon cross section of 10-47 cm2 for a WIMP mass of 1TeV/c2 in a 5 yr run. This result provides a background-free exposure of 100 t-yr, which is a factor of 103 better than currently published results for spin-independent cross sections for 1TeV WIMPs. DS-20k will lay the groundwork for Argo, a 200 t-fiducial mass UAr experiment designed to explore in a background-free mode, the parameter space available for dark matter down to the “neutrino floor”. Finally, DS-20k allows precision low-energy solar neutrino measurements.
        Speaker: Ed Hungerford (University of Houston)
      • 18:00
        The design and performance of the ATLAS Inner Detector trigger for Run 2 LHC Collisions at 13 TeV 2h
        LHC Run 2 presents challenging high rate conditions for data analysis and processing within the ATLAS trigger systems. The ATLAS Inner Detector (ID) trigger implements the algorithms used for identification of tracks in nearly all physics signatures within the ATLAS trigger. The ID trigger was updated and redesigned during the 2013-2015 long shutdown to meet the challenging conditions of Run 2. As well, for Run 2 a new pixel detector layer was added in very close proximity to the beam pipe, which enhances the ID Trigger performance. The redesigned ID trigger algorithms for Run 2 are described, illustrating the significant improvements gained by the new tracking strategies adopted to deal with the increased rate. Performance of the ID trigger in Run 2 is shown in terms of algorithm timing, efficiency and resolution, using data collected by ATLAS in Run 2. The ID trigger continues to show excellent performance, with efficiencies greater than 99%, and track reconstruction times well within the required latency budget.
        Speaker: Fabrizio Miano (University of Sussex (GB))
      • 18:00
        The Design Goals of the 35-ton Liquid-argon Prototype and First Lessons Learned 2h
        The Deep Underground Neutrino Experiment (DUNE), will look for CP violation in the neutrino sector, attempt to measure neutrino mass hierarchy and determine the quadrant of θ23, in addition to searching for proton decay and supernovae neutrinos. The total fiducial mass will be 40 kt of Liquid Argon (LAr), built in 4 staged 10 kt modules, each representing a ~15 times increase in mass from existing LAr experiments. As such a significant prototyping effort is required to overcome numerous problems related to scaling up to detectors of this size. The first results of one such prototype, ‘the 35 ton’, will be shown as well as an overview of the fulfillment of its design goals. These goals are; to measure the effect of a modular design on reconstruction, the efficacy with which photon detectors can be integrated into a Time Projection Chamber (TPC), the effect of digitizing the TPC output at cryogenic temperatures and the ability to install a TPC into a membrane cryostat.
        Speaker: Mr Thomas Warburton (University of Sheffield, UK)
      • 18:00
        The fluid database paradigm: a prototype 2h
        The process of event-building---i.e gathering and associating data from multiple sensors or sub-detectors that arises from a common physical event---is used in many fields, including high-energy physics and gamma-ray astronomy. The problem of fault tolerance in event-building is a difficult one, and one that becomes increasingly difficult with higher data throughput rates and increasing numbers of sub-detectors. We draw on biological self-assembly models in the development of a novel event-building paradigm that treats each packet of data from an individual sensor or sub-detector as if it were a molecule in solution. Bonds (analogous to chemical bonds) are defined between data packets using metadata-based discriminants. A database, which plays the role of a beaker of solution, continually selects pairs of assemblies at random to test for bonds, allowing single tiles and small assemblies to aggregate into larger assemblies. During this process higher-quality associations supersede spurious ones. The database thereby becomes fluid, dynamic, and self-annealing rather than static. We will describe lessons learned from early prototypes of the fluid database as well as future directions.
        Speaker: Amanda Weinstein (Iowa State University)
      • 18:00
        The Frascati LINAC beam facility performance and upgrades 2h
        Test beam and irradiation facilities are the key enabling infrastructures for research in HEP and astro-particles. In the last 11 years, the Beam-Test Facility (BTF) of the DAΦNE accelerator complex, in the Frascati laboratory, has gained an important role in the European infrastructures devoted to the development and testing of particle detectors. Electron or positron beam can be extracted before the injection into the damping ring to a dedicated transfer line, where a system composed by a target plus a dipole and collimating slits, can attenuate and select the momentum of secondary particles in narrow (<1%) band. The secondary beam is thus driven to a dedicated experimental hall for beam-test activities (BTF, beam-test facility). The facility can provide runtime tuneable electrons and positrons beams in a defined range of different parameters: energy (up to 750 MeV for e- and 540 MeV for e+), charge ( up to 1010 e /bunch) and pulse length (1.4–40 ns). The bunch delivering rate is depending on the DAFNE injections (up to 49 Hz). The electron beam spot and divergence can be adjusted, down to sub-mm sizes and approximately 2 mrad. Photons can be produced on a Bremsstrahlung active target, and energy-tagged inside a dipole magnet by means of Silicon micro-strip detectors. An optimized, shielded Tungsten target is used for neutron photo-production: about 8 10-7/primary, 1 MeV neutron are produced. Overall, an average of 200 beam days are delivered to about 20 experimental groups each year. The possibility of delivering an high-intensity positron beam, opens the opportunity of performing positron annihilation missing mass experiments for the search of light dark matter particles, like dark photons, ALPs, etc.; recently the PADME experiment has been approved by INFN for running at the BTF in late 2017/beginning of 2018, for reaching an exclusion of ε=10-3 for invisible decays, up to 26 MeV/c2 dark photon masses. An important upgrade program of the facility is under evaluation, along three main lines: consolidation of the LINAC infrastructure, in order to guarantee a stable operation in the longer term; upgrade of the LINAC energy, in order to increase the facility capability (especially for the almost unique extracted positron beam); doubling of the BTF beam-lines, in order to cope with the significant increase of users due to the much wider range of applications.
        Speaker: Paolo Valente (Universita e INFN, Roma I (IT))
      • 18:00
        The MICE Demonstration of Muon Ionization Cooling 2h
        Muon beams of low emittance provide the basis for the intense, well characterised neutrino beams necessary to elucidate the physics of flavour at the Neutrino Factory and to providelepton-antilepton collisions up to several TeV at the Muon Collider. The international Muon Ionization Cooling Experiment (MICE) will demonstrate muon ionization cooling, the technique proposed to reduce the phase-s pace volume occupied by the muon beam at such facilities. In an ionizationcooling channel, the muon beam traverses a material (the absorber) loosing energy, which is replaced using RF cavities. The combined effect is to reduce the transverse emittance of the beam (transverse cooling). The configuration of MICE required to deliver the demonstration of ionization cooling is being prepared in parallel to the execution of a programme of measurement designed to characterise the cooling properties of liquid hydrogen and lithium hydride. The design of the cooling demonstration experiment will be presented together with a summary of the performance of each of its components and the cooling performance of the experiment. The status of the construction project will be summarized.
        Speaker: Tanaz Angelina Mohayai (Illinois Institute of Technology)
      • 18:00
        The Mu2e Straw Tube Tracker 2h

        The Mu2e experiment will search for neutrinoless conversion of muons into electrons
        In the field of an aluminum nucleus. The signature of this process is an electron with
        energy nearly equal to the muon mass. Precise and robust measurement of the outgoing
        electron momentum, combined with other background rejection methods, is essential to the
        experiment. We rely on a low-mass straw tube tracker to achieve these goals. The tracking
        system must operate in a vacuum and a 1 Tesla magnetic field. We have chosen to use about
        20,000 thin-wall Mylar straws held under tension to avoid the need for supports within
        the active volume. In addition to measuring distance from the wire by drift time,
        subnanosecond measurement of signal propagation time will be used to measure position
        along the wire. Charge will be measured using ADCs to provide particle identification
        capability. In this talk we will describe details of the Mu2e tracker.

        Speaker: Dan Ambrose (University of Minnesota)
      • 18:00
        The next-generation neutrinoless double-beta decay experiment nEXO 2h
        The nEXO Collaboration is designing a very large detector to search for neutrinoless double beta decay of Xe$^{136}$. The nEXO detector is rooted in the current EXO-200 program, which has reached a sensitivity for the half-life of the decay of $1.9\times10^{25}$\,y with an exposure of 99.8 kg-y. The baseline nEXO design assumes 5 tonnes of liquid xenon, enriched in the mass 136 isotope, within a time projection chamber. The detector is being designed to reach a half-life sensitivity of $>5\times10^{27}$\,y, covering the inverted neutrino mass hierarchy, with 5 years of data. We present the nEXO detector design, the current status of R\&D efforts, and the physics case for the experiment.
        Speaker: Josh Albert (nEXO)
      • 18:00
        The pulse height distribution of the chevron micro-channel plate 2h
        In Jiangmen neutrino experiment(JUNO),we developed 20 inch electrostatic focusing micro-channel plate photomultiplier tube(MCP-PMT). In the MCP-PMT, we used the chevron micro-channel plate to collect and multiply photoelectrons from photocathode.. In order to obtain a higher collection efficiency and the best single photoelectron peak valley ratio, in addition to making a good single micro- channel, it is a very significant research work. To optimize the structure and the working state of the micro- channel plate assembly. We used pulse height analyzer to test the optimum operating voltage of each MCP and changes of electric field in gap, and then obtain the gain and pulse resolution of this components which made of the chevron micro-channel plate. In order to get the best design and best working conditions, and improve the performance of MCP-PMT, We Designed and manufactured a set of simple equipment, which can test the performance of the MCP component before load PMT , ensure that the final products of MCP-PMT after a simple test and adjustment, and then get the best performance under the best working condition. For the batch production of MCP-PMT, We obtain simple and quick test method.
        Speaker: shulin Liu
      • 18:00
        The QGSM description of baryon production at modern colliders: average Pt vs. energy and vs. mass + charge asymmetry vs. energy. 2h
        Characteristics of baryon production at high energy proton collisions have important implications for QCD theory and astrophysics. The detailed investigation of baryon spectra in Quark-Gluon String Model leads to the following conclusions: a) the average transverse momenta are slowly growing with energy, b) the mass dependence of Pt reveals an interesting sequence of hadron states that can be continued to new heavy mass hadrons and c)charge asymmetry of baryon at central rapidity, which was predicted in QGSM, is still valuable at LHC energies.
        Speaker: Dr Olga Piskounova (LPI Moscow)
      • 18:00
        The REDTOP project: Rare Eta Decays with a TPC for Optical Photons 2h
        The $\eta$ meson is almost unique in the particle universe since it is a Goldstone boson and the dynamics of its decay are strongly constrained. Because the eta has no charge, decays that violate conservation laws can occur without interfering with a corresponding current. The integrated eta meson samples collected in earlier experiments have been less than ~$10^8$ events, limiting considerably the search for such rare decays. A new experiment, REDTOP, is being proposed at the proton booster of Fermilab with the intent of collecting more than $10^{12}$ triggers/year for studies of rare $\eta$ decays. Such statistics are sufficient for investigating several symmetry violations, and for searches for new particles beyond the Standard Model. The physics program, the accelerator systems and the detector for REDTOP will be discussed during the colloquium.
        Speakers: Brenda Fabela Enriquez (Autonomous University of Puebla (MX)), Corrado Gatto (INFN), Maria Isabel Pedraza Morales (Autonomous University of Puebla (MX))
      • 18:00
        The Run Control system of the NA62 experiment at CERN SPS 2h
        The data acquisition control program (RunControl) of the NA62 experiment, which started physics data-taking this year, is the result of a collaboration between NA62 and the CERN EN-ICE group. The standard CERN control technologies used, WinCC Open Architecture with the addition of the UNICOS and JCOP common framework, allowed for a fast initial development with scarce manpower and will help the long term maintenance of the system. An increasingly large variety of equipment (acquisition boards, trigger processor, pc farm node, raspberry pi) are now connected, controlled and monitored by the RunControl through a single communication protocol (Distributed Information Management - DIM). After the delivery of a first operational version for a dry run in July 2012, which confirmed the technical choices, the RunControl has been continuously evolving and integrating new detector subsystems as they were made available. With the experience of the technical run in 2014 and the first physics run in 2015, as well as the feedback from the shifters, the control software has now reached a good level of reliability and usability. A lot of expertise on the operation of the different components of the detector has been acquired during these runs. A new stage of development towards an automatized system integrating this knowledge can now be considered.
        Speaker: Cristina Lazzeroni (University of Birmingham (GB))
      • 18:00
        The search for `mirror' quarks with distinguished signatures at the 13 TeV LHC 2h
        Observation of non-zero neutrino masses at a scale $\sim 10^{-1} - 10^{-2}$ eV is a major problem in otherwise highly successful Standard Model. The most elegant mechanism to explain such tiny neutrino masses is the seesaw mechanism with right handed neutrinos. However, the required seesaw scale is so high ($\sim 10^{14}$ GeV), it will not have any direct collider implications. Recently, in our explicit model the seesaw mechanism with the right handed neutrinos at the electroweak scale has been investigated. The model has a mirror symmetry having both the left and right lepton and quark doublets and singlets for the same $SU(2)_W $ gauge symmetry. Additional Higgs multiplets have been introduced to satisfy the precision electroweak tests, and other low energy observables. Because the scale of the symmetry breaking is electroweak, both the mirror quarks and mirror leptons have masses in the electroweak scale in the range $ \sim 150 - 800 $ GeV. The mirror quarks / leptons decay to ordinary quarks /leptons plus almost massless neutral scalars. We calculate the final state signals arising from the pair productions of these mirror quarks and their subsequent decays. We find that these signals are well observable over the Standard Model background for $13$ TeV LHC. Depending on the associated Yukawa couplings, these decays can also give rise to displaced vertices with long decay length (very different from the usual displaced vertices associated with b decays), which will be the distinguished signatures for this model.
        Speaker: Dr Shreyashi Chakdar (University of Virginia)
      • 18:00
        The Short-Baseline Neutrino Oscillation Program in the Fermilab Booster Neutrino Beam 2h
        The Fermilab Short-Baseline Neutrino (SBN) program will deliver a rich and compelling physics opportunity, including the ability to resolve a class of existing experimental anomalies in neutrino physics and to perform the most sensitive search to date for sterile neutrinos at the 1 eV^2 mass-scale. SBN will consist of three Liquid Argon Time Projection Chamber (LAr-TPC) detectors located along the Booster Neutrino Beam: the Short-Baseline Near Detector (SBND) located 110m from the neutrino source, MicroBooNE at 470m, and the ICARUS-T600 detector located at 600m. SBN will conduct extremely sensitive searches for neutrino oscillations in both appearance and disappearance channels, covering current allowed parameters for light sterile neutrino oscillations with greater than 5-sigma significance. In this poster, the physics reach of the SBN program will be described in detail.
        Speaker: David Schmitz (University of Chicago)
      • 18:00
        The Silicon-Tungsten Tracker of the DAMPE Mission 2h
        DAMPE (DArk Matter Particle Explorer), a satellite mission of the Chinese Academy of Sciences dedicated to high energy particle detections in space, was successfully launched on December 17 2015. The main scientific objective of DAMPE is to detect electrons and photons in the range of 5 GeV-10 TeV with unprecedented energy resolution in order to identify possible Dark Matter signatures. It will also measure the flux of nuclei up to 100 TeV with excellent energy resolution, which will bring new insights to the origin and propagation high energy cosmic rays. With its excellent photon detection capability, the DAMPE mission is also well placed to make strong contributions to high energy gamma astronomy. The DAMPE detector consists of a plastic scintillator strips detector (PSD) that serves as anti-coincidence detector, a silicon-tungsten tracker (STK), a BGO imaging calorimeter of about 31 radiation lengths, and a neutron detector. The STK has been developed by in international collaboration formed with groups from University of Geneva, INFN Perugia, INFN Bari, INFN Lecce and Institute of High Energy Physics, Beijing. The STK consists of 6 tracking double-layers; each consists of two layers of single-sided silicon strip detectors measuring the two orthogonal views perpendicular to the pointing direction of the apparatus. Three layers of Tungsten plates with thickness of 1mm are inserted in front of tracking layer 2, 3 and 4 for photon conversion. The STK uses single-sided AC-coupled silicon micro-strip detectors. The sensor is 9.5 cm by 9.5 mm in size, 320μm thick, and segmented into 768 strips with a 121μm pitch. Only every other strip will be readout but since analogue readout is used the position resolution is better than 80μm for most incident angles, thanks to the charge division of floating strips. Because of the analog readout STK can also measure the charge of the incident cosmic rays. In this contribution, the key features of the STK will be describes. An overview on the development, qualification and beam tests of the Engineering and Qualification Model, as well as the status of the construction of the Flight Model will be presented. Highlights of the initial performance of the STK in orbit will be shown.
        Speaker: Xin Wu (Universite de Geneve (CH))
      • 18:00
        The slow control system for the Fermilab Muon g-2 experiment 2h
        The Fermilab Muon g-2 experiment will measure the anomalous magnetic moment of the muon to a precision of 140 parts per billion (ppb), which represents a four- fold improvement over the Brookhaven E821 measurement. Central to the measurement are a system of 24 calorimeters and 3 straw tracking detectors, as well as a magnetic field in the muon storage volume that must be known to 100 ppb. The states of the detectors must be controlled, monitored and stored to ensure data integrity. Additionally, the environment of the experimental hall and the temperature of magnet yoke must be continuously monitored, as temperature changes of even a degree Celsius will result in a shift of the magnetic field strength significant to the experiment. Monitoring of the experimental hall has already begun, since the environmental state affects the magnetic field shimming currently underway. This poster presents the slow control system for the experiment, designed primarily around the MIDAS slow control bus.
        Speaker: Michael McEvoy (Northern Illinois University)
      • 18:00
        The upgrade of LUCID - ATLAS luminosity monitor 2h
        The main ATLAS luminosity monitor LUCID and its read-out electronics has been completely rebuilt for the 2015 LHC run in order to cope with a higher center of mass energy (13 TeV) and with 25 ns bunch-spacing. The LUCID detector is measuring Cherenkov light produced in photomultiplier quartz windows and in quartz optical fibers. It has a novel calibration system that uses radioactive Bi-207 sources that produces internal conversion electrons above the Cherenkov threshold in quartz. The new electronics can count particle hits above a threshold but also the integrated pulseheight of the signals from the particles which makes it possible to measure luminosity with new methods. The new detector, calibration system and electronics will be covered by the contribution as well as the results of the luminosity measurements with the detector in 2015.
        Speaker: Giulia Ucchielli (Universita e INFN, Bologna (IT))
      • 18:00
        Thick-wall, Liquid-Filled Quartz Capillaries for Scintillation and Wavelength Shifting Applications 2h
        We have been developing a readout method for Shashlik Electromagnetic Calorimetry based upon liquid-filled capillaries fabricated from radiation hard (high OH content) fused silica. The liquids are waveshifters, capable of shifting scintillation light from 425nm (emission from LYSO (Ce) crystals or conventional plastic scintillator) to wavelengths in the green (500nm). While the liquid in the capillary core serves as the light source, the Quartz capillaries provide the bulk of the optical path through which the wave shifted light is transmitted to photosensors. Characteristics and performance of prototype structures will be presented, as well as plans for further development of the technique.
        Speaker: Prof. Randy Ruchti (University of Notre Dame)
      • 18:00
        Time dependent CPV measurement in B to open charm decays at LHCb 2h
        Overconstraining the unitarity triangle is a key goal of LHCb. The excellent time resolution of the detector lends itself to high precision time dependent CP violation measurements. CP observables in $B^0 ­\to D_{(s)}^{(*)+}D^{(*)‐}$ decays are of great interest as they have the potential to be sensitive to new physics contributions. There is a long­‐existing tension between results from BaBar and Belle on $B^0 ­\to D^+D^‐$. We present results on the CP observables with the full Run 1 dataset.
        Speaker: Lennaert Bel (Nikhef National institute for subatomic physics (NL))
      • 18:00
        Trigger Algorithms for Alignment and Calibration at CMS 2h
        The CMS on-line selection system is implemented in two steps: the Level-1 Trigger, implemented on custom-made hardware and dedicated to analyse the detector information at a coarse-grained scale; and the High Level Trigger (HLT), implemented as a series of software algorithms, running in a processor farm, that have access to the full detector information. A dedicated set of HLT algorithms is used to meet the data needs of the Alignment and Calibration group at CMS. We describe here that set of algorithms, and how it fits in the general infrastructure of the HLT.
        Speaker: Thiago Tomei Fernandez (UNESP - Universidade Estadual Paulista (BR))
      • 18:00
        Updates to the Low-Level RF Architecture 2h
        Fermilab has teamed with Colorado State University on several projects in LLRF controls and architecture. These projects include new LLRF hardware, updated controls techniques, and new system architectures. Here were present recent work.
        Speaker: Joshua Einstein (Electrical and Computer Engineering, Colorado State University; Fermilab)
      • 18:00
        Upgrade studies of same-charge WW vector boson scattering at the HL-LHC 2h
        The impact of several scenarios for a future upgraded ATLAS detector is evaluated for the electroweak production of same-electric-charge WW boson pairs through vector boson scattering, ssWWjj-EW, at a High-Luminosity LHC at sqrt(s) = 14 TeV. Pileup suppression and identification of jets and leptons are evaluated for their impact on the precision of the ssWWjj-EW cross-section measurement. An extension of the forward tracking system from pseudorapidities |eta|<2.7 to |eta|<4.0 has the potential to improve the cross-section precision of the ssWWjj-EW by approximately a factor of 2 for a mean number of pp interactions per bunch crossing mu 200.
        Speaker: Jessica Metcalfe (Argonne National Laboratory (US))
      • 18:00
        US Accelerator R&D Program Toward Intensity Frontier Machines 2h
        Challenges, status and plans of the US accelerator R&D program toward intensity frontier machines will be presented. The main thrusts will be discussed, including high current synchrotron R&D (IOTA), high power targetry, cost-effective SC RF and the PIP-III pre-design beam physics studies.
        Speaker: Dr Vladimir Shiltsev (FNAL)
      • 18:00
        Various perspectives of Two Higgs Doublet models and Naturalness criteria. 2h
        We study the implication of a criterion of naturalness for a broad class of two Higgs doublet models (2HDMs). In particular, we assume the cancellation of quadratic divergences in what are called the type I, type II, lepton-specific and flipped 2HDMs. This results in a set of relations among masses of the physical scalars and coupling constants, a generalization of the Veltman conditions of the Standard Model. With a softly broken U(1) symmetry, we have studied the various limiting values of the scalar mixing angles α and β . These correspond to the Standard Model Higgs particle being the lighter CP-even scalar (alignment) or the heavier CP-even scalar (reverse alignment), and also the limit in which some of the Yukawa couplings of this particle are of the opposite sign from the vector boson couplings (wrong sign). Imposing further the constraints from the electroweak T-parameter (or ρ parameter), stability and perturbative unitarity conditions produce a range for the masses of each of the remaining physical scalars. We also calculate the h → γγ decay rate in the wrong sign limit.
        Speaker: Ms AMBALIKA BISWAS (S N BOSE NATIONAL CENTRE FOR BASIC SCIENCES)
      • 18:00
        Warm Dark Matter in Two Higgs Doublet Models 2h
        In this work, we show that a neutral scalar field, $\sigma$, of two Higgs doublet extensions of the Standard Model incorporating the seesaw mechanism for neutrino masses can be identified as a consistent `warm' dark matter candidate with a mass of order keV. The relic density of $\sigma$ is correctly reproduced by virtue of the late decay of a right-handed neutrino $N$ participating in the seesaw mechanism. Constraints from cosmology determine the mass and lifetime of $N$ to be $M_N \approx 25 ~{\rm GeV} - 20 ~{\rm TeV}$ and $\tau_N \approx (10^{-4} - 1)$ sec. These models can also explain the 3.5 keV $X$-ray anomaly in the extra-galactic spectrum that has been recently reported in terms of the decay $\sigma \rightarrow \gamma \gamma$. Future tests of these models at colliders and in astrophysical settings are also discussed.
        Speaker: Dr Shreyashi Chakdar (University of Virginia)
      • 18:00
        Why you should talk to preschoolers about particle physics 2h
        While many physicists seem to believe that particle physics is too complicated for young children to comprehend and prefer to reach out to students at the middle school level or higher, my observations suggest that by the time children are in their early teens, many have already been "lost" to the hard sciences, especially girls. I will present my experiences talking with preschool classrooms and discuss the motivations for explaining the basics of particle physics to young children, including practical suggestions for effective ways to do so.
        Speaker: Karen Gibson (Case Western Reserve University)
      • 18:00
        Xebub, a prototype liquid xenon bubble chamber as dark matter detector 2h
        The search for dark matter, which makes up to 25% of the mass of the universe, is one of today's most exciting fields of particle physics. As bigger detectors are being built to increase their sensitivity, background reduction is an ever more challenging issue. To this end, a new type of dark matter detector is being developed, a liquid xenon bubble chamber, which would combine the strengths of liquid xenon TPCs, namely event by event energy resolution, with those of a bubble chamber, namely insensitivity to electronic recoils. In addition, it would be the first time ever that a dark matter detector is active on all three detection channels, ionization and scintillation characteristic of xenon detectors, and heat through bubble formation in superheated fluids. Preliminary simulations have shown that depending on threshold, a discrimination of 99.99\% to 99.9999+\% can be achieved, which is on par or better than many current experiments. The status of a prototype that is currently being built and tested at the University at Albany, SUNY, is presented.
        Speaker: Dr Cecilia Levy (University at Albany, SUNY)
      • 18:00
        “Test of CP Violation in B-Bar pairs from top quark decay“ 2h
        Top pair events provide a source of b-bbar pairs, which can be used to probe CP violation in heavy-flavour mixing and decay. In events where one of the W bosons decays leptonically to an electron or muon, the charge of the W boson can be used to determine unambiguously the flavour charge of the accompanying b quark at the time of its production. In cases where the b also decays semileptonically to a muon, this sample allows to probe two CP asymmetries constructed with the charge signs of the W and the soft muon. The first measurement of the CP asymmetries in b-bar from top pair decays is hence presented using the data collected with the ATLAS detector during the 8 TeV run of the LHC.
        Speaker: Jacob Julian Kempster (Royal Holloway, University of London)
    • 09:00 14:30
      Linear Collider Board Superior A

      Superior A

    • 09:30 11:30
      China-Chicago Connection 2h Superior B

      Superior B

    • 11:00 15:00
      Poster Session: Bring down/Setup Riverwalk A/B

      Riverwalk A/B

    • 11:30 13:00
      Tevatron Reunion 1h 30m Riverwalk A/B

      Riverwalk A/B

    • 13:00 15:50
      IBS-US: Satellite Session Huron

      Huron

      • 13:00
        Research and Opportunities at CTPU/IBS 30m
        Speaker: Kiwoon Choi (KAIST)
      • 13:30
        The axion dark matter search at CAPP: a comprehensive approach 30m

        Axions are the result of a dynamic field, similar to Higgs field, invented to solve the so-called Strong CP-problem, i.e., why the electric dipole moment (EDM) of the neutron and proton has not been observed so far even though the theory of QCD requires otherwise. Axions as dark matter can be thought of as an oscillatory field interacting extremely weakly with normal matter other than gravitationally. The oscillation frequency is unknown, it can be anywhere between f = 200MHz to 200GHz and it’s expected to be a very narrow line, about df/f=10^-6. A very strong magnetic field can be used to convert part of that field into a very weak electric field oscillating at the same frequency as the axion field. In the coming years we plan to develop our experimental sensitivity to either observe or refute the axions as a viable dark matter candidate. That approach includes the development of ultra strong magnets, high quality resonators in the presence of strong B-fields, new resonator geometries, low noise cryo-amplifiers and new techniques of detecting axions. In addition, using the strong CAST LHC dipole field we will be able to search for dark matter axions in the 4 to 6 GHz range in the immediate future.

        Another related subject, through the strong CP-problem, is the search for the EDM of the proton, improving the present sensitivity by more than three orders of magnitude. Usually the study of EDM involves the application of strong electric fields and neutral systems were thought to be easier to work with at first. Recently it became clear that charged particles in all-electric storage rings can be used, instead, for sensitive EDM searches by using techniques similar to the muon g-2 experiment. The high sensitivity study of the proton EDM is possible due to the high intensity polarized proton beams readily available today, making possible to reach 103 TeV in New Physics scale.

        Speaker: Yannis Semertzidis (CAPP/IBS and KAIST in South Korea)
      • 14:00
        CULTASK: Launching Axion Experiment in Korea 30m

        The Center for Axion and Precision Physics Research (CAPP) at IBS is establishing a state-of-the-art axion experiment in Korea to search for relic axion particles converting to microwave photons in a resonant cavity submerged in a strong magnetic field. The initial stage of building our axion experiment, CULTASK (CAPP Ultra Low Temperature Axion Search in Korea) is completed at KAIST (Korea Advanced Institute for Science and Technology) Munji Campus with successful installation of two new dilution refrigerators (one with 8T superconducting magnet) which could lower the temperature of cavities to less than 50 mK. A resonant cavity with the frequency tuning system is fabricated and the RF readout electronic chain is being set up. I will present the status and progress of CULTASK, soon to be complete with a DAQ and monitoring system, and future plans. I will also discuss the recent results from the development of high Q-factor, ultra pure Cu and Al cavities under high magnetic fields, utilizing the two refrigerators.

        Speaker: Woohyun Chung
      • 14:30
        Coffee Break 20m
      • 14:50
        Double beta decay and neutrino Experiments at CUP/IBS 30m

        Neutrino physics is one of the most active fields in the modern nuclear and particle physics. All the mixing angles and mass differences are measured with the solar, the reactor, and the accelerator driven neutrino oscillation experiments. Yet, the mass of the lightest neutrino is not known and whether the neutrinos are Dirac or Majorana particles, is also not determined. Neutrino-less double beta decay experiment can answer both of the questions directly, and ultra-low backgrounds and excellent energy resolution are critical to discover this ultra rare phenomena. AMoRE experiment is a state-of-art experiment based on low temperature MMC sensor and ultra pure molybdate crystals containing highly enriched isotopes. It’s sensitivity goal is reaching 10^27 years of half-life and down to 15-40 meV neutrino mass.
        The existence of sterile neutrinos is speculated in a few experiments and in a variety of theories. NEOS experiment performed at a commercial reactor made a new result in the parameter space of the sterile neutrinos. Some future perspectives for reactor neutrino experiments will be presented.

        Speakers: Prof. Yeongduk Kim (Institute for Basic Science), Yeongduk Kim (Sejong University)
      • 15:20
        Status and Prospect for NaI dark matter experiments 30m

        Astrophysical observations give overwhelming evidence for the existence of dark matter. The DAMA collaboration has asserted for years that they observe a dark matter-induced annual modulation signal in their NaI(Tl)-based detectors, while other direct detection dark matter experiments have seen no indications of a signal. I will describe the current status and prospect for alternative low-background NaI(Tl)-based dark matter experiments, and their proposed strategies for resolving the current stalemate in the field.

        Speaker: Reina Maruyama (Yale University)
    • 13:00 17:00
      IUPAP C11 4h Superior B

      Superior B

    • 14:30 15:00
      Break 30m Superior A

      Superior A

    • 15:00 19:00
      International Committee for Future Colliders Superior A

      Superior A

    • 15:00 16:30
      Windy City Physics Slam Chicago Ballroom

      Chicago Ballroom

    • 09:00 09:30
      Formal Opening Chicago Ballroom

      Chicago Ballroom

      • 09:00
        Introduction 5m
        Speaker: Young-Kee Kim (University of Chicago (US))
      • 09:05
        Welcome remarks 25m
        Speakers: Fleming Crim (National Science Foundation), Glen Crawford (US Department of Energy), Robert Zimmer (The University of Chicago)
    • 09:30 10:50
      ICHEP2016 Highlights Chicago Ballroom

      Chicago Ballroom

    • 10:50 11:15
      Break 25m
    • 11:15 12:30
      ICHEP2016 Highlights Chicago Ballroom

      Chicago Ballroom

      • 11:15
        Highlights of LHC experiments - part I(22' + 5') 27m
        Speaker: Dave Charlton (University of Birmingham (GB))
      • 11:42
        Highlights of LHC experiments - part II (22' + 5') 27m
        Speaker: Tiziano Camporesi (CERN)
      • 12:10
        Start of SuperKEKB (15' + 5') 20m
        Speaker: Yukiyoshi Onishi (KEK)
    • 12:30 12:45
      1' Elevator Speeches by 10 Young Scientists 15m Chicago Ballroom

      Chicago Ballroom

      Speakers: Lauren Alexandra Tompkins (Stanford University (US)), Sarah Marie Demers Konezny (Yale University (US))
    • 12:45 13:00
      Presentation of award from The Science Coalition to US Representative Bill Foster (15') 15m Chicago Ballroom

      Chicago Ballroom

    • 13:00 14:15
      Lunch 1h 15m
    • 13:20 14:05
      Lunch & Learn: What makes a great physics news story, and the best way to tell it 45m Chicago Ballroom

      Chicago Ballroom

      For many researchers, science is the easy part. Communicating that science to a media whose motives can seem confusing – and to a public that can seem indifferent – is more challenging. This session will provide researchers with an introduction to the multifaceted global media landscape, and how their science stories can fit into that landscape. A panel including journalists from the BBC and Washington Post and press officers from the UK and Japan will explain the different types of media outlets and what types of stories they’re looking for, will provide tips on pitching stories to different reporters with different needs, and will answer questions from the audience. Participants will leave with a handy checklist of what to expect when pitching to media.

      Presenters
      Feltman, Rachel (The Washington Post)
      Ghosh, Pallab (British Broadcasting Corporation)
      O’Connor, Terence (STFC)
      Okada, Saeko (KEK)

      Speakers: Pallab Ghosh (BBC News), Rachel Feltman (The Washington Post), Saeko Okada (KEK), Terence O'Connor (Science and Technology Facilities Council)
    • 14:15 15:45
      Neutrinos Chicago Ballroom

      Chicago Ballroom

      • 14:15
        Neutrinos - Accelerator-based program (25' + 5') 30m Chicago Ballroom

        Chicago Ballroom

        Speaker: Mayly Sanchez
      • 14:45
        Neutrinos - Non-accelerator-based program (25' + 5') 30m Chicago Ballroom

        Chicago Ballroom

        Speaker: Giorgio Gratta (Stanford University)
      • 15:15
        Neutrinos - Interpretations of results, outlook and new ideas (25' + 5') 30m Chicago Ballroom

        Chicago Ballroom

        Speaker: Andre De Gouvea (Northwestern University)
    • 15:45 16:15
      Break 30m
    • 16:15 17:30
      Enabling Technologies Chicago Ballroom

      Chicago Ballroom

      • 16:15
        Detector R&D and Performance (20' + 5') 25m Chicago Ballroom

        Chicago Ballroom

        Speaker: Vivian O'Dell (Fermi National Accelerator Lab. (US))
      • 16:40
        Computing and Data Handling (20' + 5') 25m Chicago Ballroom

        Chicago Ballroom

        Speaker: Doris Kim (Soongsil University)
      • 17:05
        Accelerators: Science, Performance, and R&D (20' + 5') 25m Chicago Ballroom

        Chicago Ballroom

        Speaker: Prof. Grigory Trubnikov (Joint Institute for Nuclear Research, Dubna)
    • 17:30 18:30
      Future facilities Chicago Ballroom

      Chicago Ballroom

      • 17:30
        Future Facilities - Introduction by the Facilitator (5') 5m Chicago Ballroom

        Chicago Ballroom

        Speaker: Jonathan Bagger (TRIUMF)
      • 17:35
        Future Facilities - Global Future Facilities (25') 25m Chicago Ballroom

        Chicago Ballroom

        Speakers: Fabiola Gianotti (CERN), Masanori Yamauchi (KEK), National Lab Directors, Nigel Lockyer (Fermilab), Takaaki Kajita, Yifang Wang (IHEP)
      • 18:00
        Future Facilities - Questions and Discussions by Panel Members (30') 30m Chicago Ballroom

        Chicago Ballroom

        Speakers: John William Womersley (STFC - Rutherford Appleton Lab. (GB)), Natalie Roe (Lawrence Berkeley National Laboratory), Norbert Holtkamp (SLAC National Accelerator Laboratory), Ursula Bassler (CEA-Saclay)
    • 18:30 20:30
      Funding Agencies for Large Colliders: (FALC) Meeting Illinois Boardroom

      Illinois Boardroom

    • 18:30 20:30
      Poster Session: Monday Riverwalk A/B

      Riverwalk A/B

      • 18:30
        "Beam-induced backgrounds in the ATLAS experiment during run II" 2h
        At the Large Hadron Collider accelerator beam halo cleaning losses on the upstream collimators, or proton collisions with residual gas in the beam pipe can create particle showers that have sufficient energy to reach the ATLAS detector. In some cases the beam-induced particles may mimic physics objects in the calorimeter and as such can create a source of background in the physics analyses. The beam-induced particle showers can also typically result in increased occupancies in the silicon tracker, which may impact on detector operation and read-out. Such beam-induced backgrounds have been carefully studied throughout 2011 and 2012 data taking and the characteristic topologies and timing of the background events have been exploited to develop tools that can identify, study and ultimately mitigate the backgrounds in the physics analysis. Using these identification tools, a significant increase in the rate of the beam-induced backgrounds reaching ATLAS has been observed in 2015 data taking. We present studies of the increase in beam-induced backgrounds observed in LHC run II and compare the observed rates with those calculated from detailed simulations of the accelerator.
        Speaker: Saverio D'Auria (University of Glasgow (GB))
      • 18:30
        37Ar Calibration of a Two-Phase Xenon Detector 2h
        The Particle Identification in Xenon at Yale (PIXeY) experiment is a three kg active-mass, two-phase (liquid and gas) xenon detector. Experiments aiming to directly detect dark matter often employ two-phase xenon detectors. PIXeY has been designed and built to investigate and optimize properties of this class of detectors. To this end, the drift field (applied between the cathode and gate grids causes charged particles to drift towards the xenon liquid surface) and the extraction field (applied between the gate and anode grids extracts particles from the liquid surface) can be easily modified. A candidate particle for dark matter is an axion-like pseudoscalar, which interacts with xenon via electron recoils at low energy. Additionally, the neutrino magnetic moment can be searched by examining the rates of neutrino-electron scattering at low energy. Therefore, understanding liquid xenon’s response in this low-energy regime and how that response varies with drift field is vitally important. 37Ar is an ideal source for calibrating our detector at these low energies, because it decays via electron capture (EC) and releases x-rays at two energies: 2.8 keV due to EC from the K-shell and 0.27 keV due to EC from the L-shell. This talk will explain the motivation, creation, deployment, and results of the 37Ar source in PIXeY.
        Speaker: Ms Elizabeth Boulton (Yale University)
      • 18:30
        A DECam search for kilonova counterparts of the sources detected by ALIGO/AVIRGO 2h
        We, in conjunction with the Dark Energy Survey, are using the large DECam on the CTIO Blanco 4m telescope for a program of identifying the optical counterparts of the sources of gravitational waves detected by the Advanced Ligo and Advanced Virgo network. The most likely optical counterparts are the fascinating kilonova, the light from decompressing neutron star matter undergoing r-process nucleosynthesis and radioactively decaying. These are likely to be relatively dim, only visible out to a few hundred megaparsecs. This requires imaging hundreds of sq-degrees of ALIGO localization probability areas to locate i~21 to i~22 mag fading objects in a background of supernova, variable stars, and less common transient objects. We present a description of the program, analysis techniques, simulations which show the completeness and purity of our search, and present results from our first season. The aim of the program is the develop the techniques for detecting and obtaining the redshifts for sample of kilonova large enough to pursue a direct Ho measurement.
        Speaker: James Annis (Fermilab)
      • 18:30
        A Masterclass exercise based on gravitational wave data 2h
        Following the example of the successful International Masterclasses “Hands on particle physics” (IMC) which are using LHC data, we are developing an IMC-like session based on data from the LIGO-Virgo network of interferometric gravitational wave detectors. The fact that the instruments members of this network share their data and analyze them jointly for almost a decade can be directly transposed into the existing IMC framework in which groups of high-school students, which participate to a Masterclass the same day in different institutes, combine their independent measurements during a common videoconference which ends the session. In this talk, we describe in details the new Masterclass exercise based on gravitational wave detector data and show what a typical day-long Masterclass session could look like.
        Speaker: Nicolas Arnaud (LAL (CNRS-IN2P3))
      • 18:30
        A Measurement of the $\nu_{\mu}$ Charged-Current Cross Section on Water with Zero Pions in the Final State at T2K 2h
        The Tokai to Kamioka (T2K) experiment is a 295-km long-baseline neutrino experiment aimed towards the measurement of neutrino oscillation parameters $\theta_{13}$ and $\theta_{23}$. Precise measurement of these parameters requires accurate knowledge of neutrino cross sections. We present a flux-averaged double differential measurement of the charged-current cross section on water with zero pions in the final state using the T2K off-axis near detector, ND280. A selection of $\nu_{\mu}$ charged-current events occurring in the Pi-Zero subdetector (P0D) of ND280 is performed with $5.8 \times 10^{20}$ protons on target. The charged, outgoing tracks are required to enter and be identified by the ND280 Tracker. The cross section is determined using an iterative Bayesian unfolding technique. By separating the dataset into time periods when the P0D water layers are filled with water and when they are empty, a subtraction method provides a distribution of $\nu_{\mu}$ interactions on water only. Systematic uncertainties on the neutrino flux, interaction model, and detector simulation are propagated numerically within the unfolding framework.
        Speaker: Tianlu Yuan (University of Colorado)
      • 18:30
        A new tool to reweigh semileptonic decays to search for new physics 2h
        The search for new physics involving semileptonic decays requires often the use of dedicated Monte Carlo samples, as acceptance and selection efficiencies depend on the kinematics of the sought for signal process. We present a new tool that allows to reweigh exclusive semileptonic B, Bs and Lambda_b decays with kinematic weights into a range of models of interest, such as for instance additional contributions from right-handed currents, type II and III two-Higgs doublet Models or Leptoquark contributions. The reweighing is based on the ratio of the full decay matrix elements and works with all implemented Standard Model matrix elements of the EvtGen Monte Carlo generator. In this talk we demonstrate the underlying method and apply it to several currently interesting use-cases.
        Speakers: Florian Urs Bernlochner (Universitaet Bonn (DE)), Jan Hasenbusch
      • 18:30
        A New US-CERN Summer Program on ATLAS Experiment of LHC at CERN for California State University System 2h
        Professional physicists are a largely homogeneous group. According to the American Institute of Physics's Statistical Research Center, only 17% of bachelor's degrees and 12% of PhDs in the US go to women; 8% of bachelors and 1% PhDs go to Hispanic, African American and Native American students. In contrast, the college age US population is 50% women and 28% Hispanic, African American and Native American, which indicates that a large fraction of potential physics talent is untapped. Myriad factors, from institutionalized racism to lack of exposure about STEM careers, contribute to this gap in participation. Closing this gap requires concerted effort on many fronts. This abstract focuses on one such front: providing access to quality research opportunities for students from under represented groups through a summer research program through the Nuclear and Particle Physics Consortium at the California State University (CSU) system. With 23 campuses serving over 450,000 students from a diverse range of backgrounds, the CSU system is the largest public university system in the United states. It is also a minority serving institution. In 2013, the student body was 41% Latino (32% Mexican American) and 5% African American. At least 35% are the first person in their family to attend college. However, the campuses have limited research opportunities for students. We will discuss a program started by Professor Yongsheng Gao of CSU Fresno, and supported by the NSF International Research Experiences for Students and several CSU campuses, to provide CSU students with summer research experiences at CERN with mentors from a variety of institutions. Students are prepared for the program by taking an online course on particle physics taught by Professor Gao, and doing several months of practical tutorials with CSU Fresno and Stanford University students and postdocs. Our talk will focus on the preparation and experiences of both the student and mentors.
        Speakers: Lauren Alexandra Tompkins (Stanford University (US)), Yongsheng Gao (California State University (US))
      • 18:30
        A parameter study of Pythia6 MPI model using LHC data 2h

        Minimum bias and underlying event data from the LHC and Tevatron have been used to tune the PYTHIA. We tune Multiple Parton Interaction (MPI) parameters including three Lambda parameters. It is shown that these tunings describe selected distributions quite well, especially pt distribution at three collision energies, 0.9 TeV , 1.9 TeV and 7 TeV provided that charge particles with pT > 500MeV are used. Results are presented using three types of Parton Density Functions (PDFs) of proton : leading order (LO), modied leading order(LO*) and next-to-leading order (NLO). We found that all three types of PDFs can describe minimum bias and underlying event distributions equally well.

        A parameter study of PYTHIA6 Multiple Parton Interaction (MPI) using best fit to the data published by ATLAS Collaboration is presented. Altogether thirteen parameters are investigated to find the most sensitive parameters to the selected data. This type of study helps in better understanding of different parameters needed to be used in PYTHIA6 tunes.

        Speaker: Dr Nameeqa Firdous (Royal group of Colleges)
      • 18:30
        A Predictive Model of Dirac Neutrinos 2h
        Most of the theoretical work for the models of neutrino masses and mixings uses the neutrinos to be of Majorana type. This is due to the fact that the most elegant mechanism for the neutrino mass generation is the see-saw mechanism in which the neutrinos are indeed Majorana particles. However, experimentally it is not yet established whether the neutrinos are Majorana or Dirac particles. In this talk, I will discuss a model in which the tiny masses for the neutrinos generated are of Dirac type. The model is an extension of the SM, and contains three right handed (RH) massless neutrinos, and one additional Higgs doublet which couples only to the neutrinos. This is achieved using a discrete Z_2 symmetry which is spontaneously broken due to a tiny vev of this 2nd Higgs doublet. Lepton number conservation is also assumed so the RH neutrinos cannot acquire large Majorana masses. The astrophysical constraints allow the VEV of the 2nd Higgs doublet in the keV scale. This small scale eliminate the necessity of very tiny Yukawa coupling as would be the case in the SM with RH neutrinos. With some additional reasonable assumptions, and some extra symmetry among the RH neutrinos, we construct a concrete model for the Dirac neutrino mass matrix which can reproduce the currently measured neutrino mass difference squares, and the mixing angles. The model (with only four parameters) also predict the neutrino mass hierarchy to be of inverted type, masses of all the neutrinos, and the leptonic CP violating phase , delta, to be close to 270 degrees. Other proposed models for the neutrino mass matrix of Dirac type will also be briefly reviewed.
        Speaker: Prof. Satyanarayan Nandi (Oklahoma State University)
      • 18:30
        Advanced interferometric gravitational-wave detectors: status and prospects 2h
        A worldwide network of second generation, more sensitive, gravitational-wave detectors is being setup. Its first two members are the Advanced LIGO detectors (aLIGO) who started taking data in September 2015 and detected the signal known as GW150914, a binary black hole coalescence. The upgrade of the Advanced Virgo detector (AdV) is about to come to an end. After its commissioning phase, AdV will join aLIGO in the network, followed a couple years later by the KAGRA cryogenics underground detector, currently under construction in Japan. In this talk, we present the status of these different projects and discuss the prospects of the growing network of detectors, at the dawn of the gravitational-wave astronomy.
        Speaker: Nicolas Arnaud (LAL (CNRS-IN2P3))
      • 18:30
        An 8-Straw Prototype Tracker for Mu2e 2h
        We will describe the design, construction, operational experience, and performance results from an 8-straw prototype of the Mu2e tracker. The Mu2e experiment will search for muon to electron conversion in the field of a nucleus with 4 orders of magnitude more sensitivity than previous experiments. The Mu2e experiment relies on a precision (~1/1000) measurement of the daughter electron momentum to separate signal from background. Achieving this precision at the relevant scale of 105 MeV/c requires a very low-mass tracker. Mu2e has chosen a straw chamber tracker with approximately 20,000 5 mm diameter thin-walled straws arranged sparsely in a roughly 3 m long by 0.7 m radius cylinder, operated in vacuum and a magnetic field of 1 T. To test the novel design features and measure the performance of the straws and associated electronics, we built an 8-straw prototype tracker. This prototype follows the geometry of the outermost 8 straws of the full Mu2e tracker. Many construction and design issues were explored and resolved in constructing the prototype. The prototype has been tested using radioactive sources, particle beams from accelerators, and cosmic rays. The prototype operated stably for gains up to 1.7 e5. The prototype achieved the design goal position resolution of < 200 um perpendicular to the wire, and about 3 cm along the wire, with efficiencies > 95%, for signals and operating conditions similar to those expected in Mu2e. Results of tests for cross-talk, long-term stability, gas gain properties, and total dose aging effects on the chamber will be presented. We will also describe the models used to simulate the straw physics and electronics in the Mu2e Monte Carlo that have been tuned to these results.
        Speakers: Dr David Brown (Lawrence Berkeley National Lab), Dr Richard Bonventre (Lawrence Berkeley National Lab)
      • 18:30
        An Automated Test Stand for Production Testing of CMS Pixel Detector Optical Transmitters 2h
        The Real-time Systems Engineering (RSE) Department at Fermilab is responsible for the delivery of a new optical transmitter module for the Phase 1 upgrades of the Forward Pixel Detector of the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) at CERN. The delivery of these modules was made possible by an automated test stand developed by RSE. This test stand employs custom hardware (to distribute test patterns to the electrical inputs of the transmitter channels) and an optical switch (to select the optical outputs of the transmitters for delivery to optical test equipment for eye pattern characterization and bit error rate performance measurements). The operation of the system is controlled by virtual instruments written in the National Instruments’ Labview environment. This approach minimized the manual labor involved in the production testing of over 700 readout channels and resulted efficient data logging and analysis for the tested modules. The test stand architecture, test and calibration procedures, and production testing results will be presented.
        Speaker: Isaac Harris (Fermilab, currently University of Chicago)
      • 18:30
        An Effective Field Theory Analysis of the First LUX Dark Matter Search 2h
        The Large Underground Xenon (LUX) dark matter search is a 370-kg dual-phase xenon-based time projection chamber that operates by detecting light and ionization signals from particles incident upon a xenon target. With its 2013 report of the world’s first sub-zeptobarn spin-independent WIMP-nucleon cross section limit, LUX emerged as a frontrunner in the field of dark matter direct detection. In December 2015, LUX released an updated analysis of its 2013 dataset leading to an overall 23% increase in sensitivity for high-mass WIMPs and even more significant improvement for low-mass WIMPs. However, tension between experiments and the absence of a definitive positive detection suggest it would be prudent to search for WIMPs outside the standard spin-independent/spin-dependent analyses. Recent effective field theory work has identified a complete set of 14 possible independent WIMP-nucleon interaction operators restricted only by basic symmetries. These operators produce not only spin-independent and spin-dependent nuclear responses but also novel nuclear responses such as angular-momentum-dependent and spin-orbit couplings. Here we report on the extension of the LUX analysis to search for all 14 of these interactions, comment on the possible suppression of event rates due to operator interference, and show that under this new framework, LUX again exhibits world-leading sensitivity.
        Speaker: Nicole Larsen (University of Chicago)
      • 18:30
        An electronically steered phased-array for the radio detection of high-energy neutrinos 2h

        Radio detector arrays such as RICE, ANITA, ARA, and ARIANNA target the discovery of both cosmogenic neutrinos and the sources of the PeV-scale astrophysical neutrinos observed by IceCube. These radio arrays exploit the Askaryan effect and the radio transparency of glacial ice, which together enables the economical instrumentation of necessarily large volumes of ice. We describe here the electronics design of a digitally-phased radio array that would both lower the energy threshold of existing radio detectors and provide a more efficient coverage of the instrumented volume of ice.
        A real-time trigger board digitizes 8 antennas each at 7-bit resolution and at a Nyquist sampling rate of 1.5 GHz.
        The digital correlation between antennas in the array is performed in an on-board field-programmable gate array, which includes several gigabit serial-links to daisy chain trigger boards in order to phase larger arrays. The first implementation of this radio phased-array will be as a dynamic vertically-polarized trigger for the ARA detector at the South Pole. We will characterize the electronics in-situ and use the 16-antenna phased array as an impulsive triggering device in this initial installation planned for 2017.

        Speaker: eric oberla (uchicago)
      • 18:30
        art@CMS SciArt Workshops 2h
        art@CMS SciArt Workshops are interdisciplinary workshops designed to introduce school, college, and university art and science students to the scientific world of particle physics and fundamental research through artistic enquiry. They incorporate an introduction to particle physics, CERN and CMS, followed by a philosophical reflection and discussion session designed to inspire the students to create their own, science related artworks. The students then have the opportunity to mount an exhibition of their work. Forgoing more traditional educational models, students construct and develop their own non-declarative projects, i.e. projects which begin without having pre-defined outcomes. As such, students follow a design framework which promotes creativity, efficacy and most importantly, acts as a useful step towards autonomous learning. Working in such non-declarative and concept-based learning environments is far more demanding of the teacher as well as the learner. It is in order to respond to this added difficulty that the design framework was conceived; it is a flexible tool to help both teacher and learner navigate these complex waters. The advantage is obvious; teaching through concepts is a teaching that can facilitate understanding in a similar way to the way in which pictograms facilitate navigation. The design framework acts as a non-prescriptive scaffolding which the learner can use to support their concept from brainstorming, research, analysis, development, mock-up, final to post project analysis. We see this as a 360 degree design exercise and not just a linear one. SciArt Workshops foster skills that are more appropriate to the challenges of the 21st century. Much work has already been done by the likes of Prof. Mihaly Csikszentmihalyi (1) to quantify the benefits of developing skills such as innovation, creativity and critical thinking. The excellent work of institutions such as the RSA (2) show other examples of such work in action. Aiming to act like an ideas factory, SciArt Workshops are built on a platform of learning, sharing and sustainable development; a form of learner(s) hub where the individual can take ownership of their ideas, honing them through a rigorous learning process to the point where they can share them with others. 1. Paul,R., & Elder, L. (32006) A guide for educators to critical thinking competency standards. 2. https://www.thersa.org
        Speaker: Dr Michael Hoch (The CMS Experiment, Austrian Academy of Sciences, CERN, Geneva, Switzerland)
      • 18:30
        Associated Higgs Boson Top-Quark Production $\rm ttH\rightarrow 2\ell + 1 \tau_{had}$ at $\sqrt{s}= 13$~TeV with ATLAS 2h
        The measurement of the associated production of a Higgs boson with a pair of top quarks is a direct determination of the top-Yukawa coupling at tree-level, which can be compared with the indirect determination in the loop-production in gluon-gluon fusion. The decay channel of the system with several leptons (multi-lepton channel), and jets, gives high sensitivity. The focus of the analysis is the sub-channel with two same-sign light leptons (electrons or muons) and a hadronically decaying tau lepton: $\rm ttH \rightarrow 2\ell + 1 \tau_{had}$. In particular the background estimate from top-antitop reactions is discussed. The analysis uses the data set recorded by ATLAS from LHC Run-II 13~TeV proton-proton collisions.
        Speaker: Babar Ali (Czech Technical University (CZ))
      • 18:30
        ATLAS data sonification : a new interface for musical expression 2h
        The goal of this project is to transform ATLAS data into sound and explore how ATLAS audio can be a source of inspiration and education for musicians and for the general public.  Real-time ATLAS data is sonified and streamed as music on a dedicated website. Listeners may be motivated to learn more about the ATLAS experiment and composers have the opportunity to explore the physics in the collision data through a new medium.  The ATLAS collaboration has shared its expertise and access to the live data stream from which the live event displays are generated.   This talk tells the story of a long journey from the hallways of CERN where the project collaboration began to the halls of the Montreux Jazz Festival where harmonies were performed.  The mapping of the data to sound will be outlined and interactions with musicians and contributions to conferences dedicated to human-computer interaction will also be discussed.
        Speaker: Ewan Chin Hill (University of Victoria (CA))
      • 18:30
        ATLAS Jet and Missing ET Reconstruction, Calibration, and Performance 2h
        The performance of the reconstruction and calibration of the jet energy scale and missing transverse energy scale with the ATLAS detector at the LHC is a key component to realize the ATLAS full physics potential, both in the searches for new physics and in precision measurements. New algorithms used for the reconstruction and calibration of jets and missing energy with the ATLAS detector during LHC run 2 are presented. Measurements of the performance and uncertainties are derived from data. The results from the 2015 pp collision data set at sqrt(s)=13 TeV are reported.
        Speaker: David DeMarco (University of Toronto (CA))
      • 18:30
        ATLAS physics prospects with the High-Luminosity LHC 2h
        Run-I at the LHC was very successful with the discovery of a new boson of about 125 GeV mass with properties compatible with those of the Higgs boson predicted by Standard Model.Precise measurements of the properties of this new boson, and the search for new physics beyond the Standard Model, are primary goals of the just restarted LHC running at 13 TeV collision energy and all future running at the LHC, including its luminosity upgrade, HL-LHC, that should allow the collection of 3000 fb-1 of data per experiment. The physics prospects with a pp centre-of-mass energy of 14 TeV are presented for 300 and 3000 fb-1. The ultimate precision attainable on measurements of the couplings of the 125 GeV boson to elementary fermions and bosons is discussed, as well as perspectives on the searches for partners associated with it. The electroweak sector is further studied with the analysis of the vector boson scattering, testing the SM predictions. Supersymmetry is one of the best motivated extensions of the Standard Model. The current searches at the LHC have yielded sensitivity to TeV scale gluinos and 1st and 2nd generation squarks, as well as to 3rd generation squarks and electro-weakinos in the hundreds of GeV mass range. Benchmark studies are presented to show how the sensitivity improves at the future LHC runs. The prospects of searches for new heavy bosons and dark matter candidates at 14 TeV are explored as well as the sensitivity of searches for anomalous top decays. For all these studies, a parameterised simulation of the upgraded ATLAS detector is used, taking into account the expected pileup conditions.
        Speaker: Alexander Khanov (Oklahoma State University (US))
      • 18:30
        Attenuation Calibration of the NOvA Detectors 2h
        NO$\nu$A is a two detector, long baseline neutrino oscillation experiment designed to study $\nu_{e}$ ($\bar\nu_{e}$) appearance and $\nu_{\mu}$ ($\bar\nu_{\mu}$) disappearance in a $\nu_{\mu}$ ($\bar\nu_{\mu}$) beam produced at Fermilab. The near detector (ND) is located 100 meters underground at a distance of 1 km from the target whereas the far detector (FD) is located on the surface, 810 km away from the target in Ash River, MN. Both detectors are functionally identical and consist of alternating planes of horizontal and vertical plastic extruded cells filled with liquid scintillator. Each cell has a looped wavelength shifting (WLS) fiber coupled to one pixel of an Avalanche Photodiode (APD). The WLS fiber is used to transport the light produced by a charged particle traversing the scintillator to the APD. The light is attenuated while travelling through the fiber and these losses are corrected by using cosmic ray muons to calibrate the NO$\nu$A detectors. This poster elaborates the detailed methodology used in the attenuation calibration of the NO$\nu$A detectors.
        Speaker: Mr Prabhjot Singh (University of Delhi)
      • 18:30
        B-Lab : Open Data Analysis Program using Belle data 2h

        B-Lab is an open data analysis program to give members of the public a taste of particle physics by presenting tools to search real experimental data for particle decays. This program started as an outreach program for Belle experiment, targeting high school students. It utilizes an adapted data sample of 1.3 /fb of the real experimental e+e- collisions accumulated at KEK by the Belle detector.

        The data is provided in ROOT format, and includes the 4-vector, charge and particle identification of particles from these collisions. The analysis is done using ROOT with simple C++ source code examples, which may be adapted for the reconstruction of various combinations of particles. Students are provided with instructive examples, and then given tasks to complete using the B-Lab interface. The public use of B-Lab began in 2004, and since then, more than 1200 people have participated in the program. We report the results of the particle searches, and discuss the impacts of and potential improvements are considering for B-Lab.

        We also want to introduce "BellePlus", a 4-day summer program for high school students held annually at KEK. The purpose of this workshop style program is to give an experience of researchers to students, and B-Lab is used as one of the studies in this program. We will also discuss our plans to use B-Lab as an outreach program for Belle II.

        Speaker: Shohei Nishida (KEK)
      • 18:30
        Backgrounds to Nucleon Decay in DUNE 2h

        The Deep Underground Neutrino Experiment (DUNE) will search for nucleon decay as one of its primary physics goals. Understanding the processes that mimic nucleon decay is critical, as these backgrounds affect the experiment’s reach and sensitivity. The backgrounds to nucleon decay can arise from atmospheric neutrino interactions and from cosmic ray interactions that result in neutral particles entering undetected into the fiducial volume and charge exchanging or decaying to mimic nucleon decay. DUNE will be particularly sensitive to SUSY-favored nucleon decay modes that involve kaons in the final state, and therefore also to cosmogenically induced backgrounds to those modes. Progress in studies of cosmogenic backgrounds to DUNE nucleon decay searches will be presented.

        Speaker: Thomas Warburton (University of Sheffield, UK)
      • 18:30
        Barium Tagging for Neutrinoless Double Beta Decay using SMFI 2h
        Realization of ton-scale experiments capable of a robust detection of neutrinoless double beta decay, given an inverted neutrino mass ordering and Majorana neutrino nature, is a high priority for nuclear and particle physics. To achieve the required sensitivity these experiments must have high signal efficiency and be virtually background free, with rates <0.1 counts per ton per year. At present, no technology exists that demonstrably meets this goal. One proposed method for ultra-low-background detection is the identification of the barium daughter ion in the decay 136Xe-->136Ba + 2e. Extraction and identification of single ions from a ton of xenon represents a formidable task. In this talk I will describe a new approach to barium tagging using single molecular fluorescence imaging (SMFI), a tool from in biology and biochemistry. SMFI relies on the chelation dye molecules in contact with specific ions, which can have large, detectable effects on the their fluorescence behavior. Using SMFI we believe that single daughter ions may be extracted and reliably identified in high-pressure xenon gas TPC detectors. I will describe the concept and discuss tests performed at the University of Texas, Arlington, where this R&D is taking place. Preliminary results regarding the drift properties of barium dictations in high-pressure xenon gas, and barium sensitive fluorescent dyes will be presented. Short-term R&D goals and long-term prospects for the method will be discussed.
        Speaker: Ben Jones (UT Arlington)
      • 18:30
        Bc meson production, decays and properties at LHCb 2h
        The Bc meson is the heaviest state in the Standard Model decaying only through weak interaction. The large production cross-section at the LHC and the efficient trigger strategy at LHCb, enable world's leading measurements of the Bc properties and the exploration of new decays to be performed. Recent Bc measurements at LHCb will be presented.
        Speaker: Alberto Lusiani (Scuola Normale Superiore and INFN Pisa)
      • 18:30
        Boosted H­>bb Tagger in Run II 2h
        Several searches for Higgs bosons decaying to b­quark pairs benefit from the increased Run II centre­of­mass energy by exploiting the large transvers­momentum (boosted) Higgs boson regime, where the two b­jets are merged into one large­radius jet. ATLAS uses a boosted H­>bb tagger algorithm to separate the Higgs signal from the background processes (QCD, W and Z bosons, top quarks). The tagger takes as input a large­R=1.0 jet calibrating the pseudorapidity, energy and mass scale. The tagger employs b­tagging, Higgs candidate mass, and substructure information. The performance of several operating points in Higgs boson signal and QCD and ttbar all­hadronic backgrounds are presented. Systematic uncertainties are evaluated so that this tagger can be used in analyses. Analyses that employ the tagger, such as the search for a resonance decaying to a vector boson and a Higgs boson (X­>VH), are also presented.
        Speaker: Merve Sahinsoy (Ruprecht-Karls-Universitaet Heidelberg (DE))
      • 18:30
        Boosting Higgs Pair Production in the bbbb Final State with Multivariate Techniques 2h
        The measurement of Higgs pair production will be a cornerstone of the LHC program in the coming years. Double Higgs production provides a crucial window upon the mechanism of electroweak symmetry breaking and has a unique sensitivity to the Higgs trilinear coupling. We study the feasibility of a measurement of Higgs pair production in the bbbb final state at the LHC. Our analysis is based on a combination of traditional cut- based methods with state-of-the-art multivariate techniques. We account for all relevant backgrounds, including the contributions from light and charm jet mis-identfication, which are ultimately comparable in size to the irreducible 4b QCD background. We demonstrate the robustness of our analysis strategy in a high pileup environment. For an integrated luminosity of L = 3 ab-1, a signal signficance of S/B~3 is obtained, indicating that the bbbb final state alone could allow for the observation of double Higgs production at the High Luminosity LHC. We also fund that, provided light jet mis-identification can be reduced, the signal significance could be increased up to the discovery level.
        Speaker: Prof. Daniela Bortoletto (University of Oxford (GB))
      • 18:30
        CCQE Model Differences in 1p1h and 2p2h Interactions 2h
        Modern neutrino interaction models describe the nuclear target more precisely than the simple relativistic Fermi gas model with impulse approximation that has been the standard in neutrino event generators for decades. In this poster, we present the impact of these model differences on the outgoing lepton kinematics that are observable in detectors.
        Speaker: Matt Dunkman (Penn State University)
      • 18:30
        CEPC benchmark analyses: measurements of Br(H->bb, cc, gg) 2h
        Based on a sample of 1M Higgs bosons produced at CEPC Higgs run, the branching fractions Br(H->bb, cc, gg) can be measured to percentage levels. These measurements require excellent jet clustering, jet energy resolution, and flavor tagging performances of the detector, which in turn demand dedicated detector design and the development of efficient and high performing event reconstruction algorithm. Based on these consideration, the measurements of Br(H->bb, cc, gg), among others, are selected as CEPC benchmark measurements. This talk reports full simulation and the analyses of Br(H->bb, cc, gg) with the CEPC detector. Preliminary results on the detector optimization towards the measurements is also discussed.
        Speaker: Yu Bai (Southeast University (SEU, Nanjing, China))
      • 18:30
        Characterisation of mixed field and dosimetry using Medipix3RX detector 2h
        **Significance** The purpose of this research is to extend the use of Medipix3RX detectors fabricated by the European Centre for Nuclear Physics (CERN), Switzerland to characterise mixed radiation fields which includes particles like neutrons (thermal, intermediate, and fast), alphas, betas, photons, and muons and then use this as the base study for personalised dosimetry in medical applications such as in MARS CT scanners, and non-medical applications such, commercial flights, and near particle accelerators and hopefully for space applications like the International Space Station (ISS). This work which involves series of projects aim to create a detector which can simultaneously detect and characterise multiple radiation types within a mixed field. Such a detector could then be used for a variety of applications, including studying the limits of radiation levels for protecting the detectors installed in the CMS cavern; dosimetry in environments containing complex radiation such as nuclear reactors and space; and feeding into other research areas featuring mixed field radiation. The results from this are useful in mixed field dosimetry application like radiation oncology in hospitals, commercial altitude flights and in outer space. **Objectives** Firstly, this work will involve carrying out a set of experiments to investigate whether MARS Medipix3RX detector's has a potential as radiation monitoring device for mixed field environments (such as particle colliders, space and aviation) which. This will indirectly help to establish the MARS Medipix3RX detector as one of the pioneers for mixed field dosimetry for accessing the dose to human in various high radiation environments mentioned above. Secondly, it will strengthen the collaboration between the MARS group, New Zealand and other scientific organisations which plan to use the MARS Medipix3RX detector in future applications such as radiation oncology, high energy physics and aviation industry applications. Publications in this field will contribute to the overall development of the future pixel detectors and encourage its use in various high energy physics experiments being carried out at CERN and elsewhere, in addition to this it will also ensure that MARS is at the cutting edge of radiation detection technology and research. **Method** The first part of my work will be to install the Medipix3RX detectors in the CMS experiment to measure the luminosity and monitor the beam radiation which will help us to protect the CMS from the radiation damage. The results of this work will help assess whether from the current background radiation levels are damaging to the CMS electronics and assist with the CMS experiments by providing mixed field radiation data collected by our detectors. The subsequent part of my work will involve producing suitable conversion layers for the Medipix3RX base sensor layer and design a MARS Mixed Field Camera for detecting and characterizing helpful in detecting neutrons, in addition to a variety of different particles in a mixed radiation field. The new conversion layers will have the ability to convert neutron to different heavy particles like alphas which then can be detected. **Conclusions and future plans** Most of the damage to the CMS experiment is done by albedo neutrons which when caused due to collision activate or excite the detector material leading to hits in the detector. Thus measuring the flux and intensities of neutrons we can assess from the current background radiation levels whether they are damaging to the CMS electronics. The CMS experiments will be assisted by providing mixed field radiation data collected by our detectors. The unique capabilities offered by the Medipix3RX detector will potentially help us to measure many different types of radiation simultaneously. And also for monitoring and quantifying the radiation dose in a range of environments containing mixed radiation fields which are made up of neutron, protons, and muons. This could be in radiation in hospitals, in planes, or even in space. \newline \newline The outcomes of the above mentioned work enable the use of the Medipix3RX detector to be extended to personalised dosimetry in medical applications such as in MARS scanners, and non-medical applications such as space travel, commercial flights, and near particle accelerators which is not possible with current dosimeters.
        Speaker: Srinidhi Bheesette (University of Canterbury (NZ))
      • 18:30
        Characterization of the first full-sized DEPFET PXD Module for the Belle II Pixel Detector 2h
        The DEPFET collaboration is in the final construction phase of a highly granular, ultra-transparent active pixel detector for high-performance vertex reconstruction at the Belle II experiment, KEK, Japan. A complete detector system is being developed, including solutions for ultra-thin sensors and their mechanical support, r/o ASICs, cooling, services, and a DAQ system capable of handling the huge amount of data coming from the pixel detector. In this paper, the status of the DEPFET project is reviewed highlighting the milestone achievements in the construction of the Belle II pixel detector PXD. The main focus of this paper is the characterization of the recently finished pilot production of the sensors including the module assembly. The sensor module is a silicon based multi-chip module (MCM) with the module substrate being the sensor wafer itself. There are three functional regions on the MCM: the 75 µm thin sensitive active pixel area with the DEPFETs in a two metal and two poly-silicon layer technology, the “end of stave” with three metal layers (two Al and one Cu) where the read-out electronic is placed, and the narrow long with the steering ASICs. Three types of ASICs are used: a mixed-signal ASIC as the analogue front-end and ADC, a digital data handling chip and a steering chip in HV-MOS technology for the row-wise addressing and clearing of the pixel matrix. There are 14 chips in total on the module, all bump-bonded to the sensor substrate, about 3000 bumps in total. In addition about 100 SMD components for supply line de-coupling and signal termination purposes are placed on the substrate. The finished module has almost 200 kPixels and is read out at a continuous frame rate of 50 kHz via a wire-bonded and solder-attached flex cable. The whole detector will be assembled out of 40 modules, yielding a complex sensor system of about 8 Mpixels. Our paper will describe the technology for the production of ultra-thin DEPFET sensor modules and discuss their performance on the test bench.
        Speaker: Ladislav Andricek (MPS Semiconductor Lab)
      • 18:30
        Charged kaon production by neutrinos at MINERvA 2h
        Charged kaon production by atmospheric neutrinos is a background in searches for the SUSY-favored proton decay $p \rightarrow K^{+} \bar{\nu}$. MINERvA identifies $K^{+}$ events by reconstructing the timing signature of a $K^{+}$ decay-at-rest. We present differential cross sections for charged-current and neutral-current neutrinoproduction of $K^{+}$ as a function of kaon energy, and discuss how these measurements can be used to constrain background predictions in proton decay searches.
        Speaker: Ben Messerly (University of Pittsburgh)
      • 18:30
        Charged Particle Tracking by Pattern Recognition and Event Reconstruction 2h
        It has been a high demand for the investigation of charged particle tracking making use of pattern recognition and event reconstruction [1], which have been of high significance towards the design, efficiency and resolution of tracking detectors. Special demand is directed to the detectors upgrade during the Long shutdown 2 (LS2) over 2018-2020 at CMS, CERN following the current RUN 2 (2015-2018). Approaches in global and local methods of track pattern recognition are essential. In case of global methods of track pattern recognition, all detector hits are treated similarly, while local methods considers good seeds. In global methods, pattern can be easily recognized when there is a finite number of possible patterns. In this case, a template can be defined for every single pattern, the so called template matching, i.e., pattern-to-template correspondence. The Fuzzy Radon transform with its special form, Hough transform [2], is another global method in which the track pattern recognition allows taking the precise resolution of the tracking detector into consideration. There have been several challenges towards the improvement of tracking detectors and one of which is track finding, rather than its efficiency, as the most time consuming part of the event reconstruction. Both geometric and reconstruction efficiencies are demanded to be obtained precisely to guarantee an accurate total efficiency of track finding, which is the fraction found of true particles. This requires that reconstructed tracks that does not match to true particles (ghost tracks) and the particles reconstructed more than once (track clones) have to be excluded. Ghost tracks are caused by noise hits or hits from different particles, while track clones may be attributed to a kink in the track or the use of two algorithms that find same tracks. Another challenge arises when many hits correspond to a single event, i.e. large multiplicity. This leads to a high occupancy, which in turn results in overlapping tracks and ghost tracks, but can be fixed by keeping the detector granularity high. Several other challenges are awaiting new approaches of tackling in the context of the contribution in the R&D upgrade activities at CMS towards the upgrade work during LS2. References: 1. "Pattern recognition and event reconstruction in particle physics experiments," R. Mankel, Reports on Progress in Physics 67, 553 (2004). 2. P.V.C. Hough, Machine Analysis of Bubble Chamber Pictures, Int. Conf. on High Energy Accelerators and Instrumentation, 554–556, CERN, 1959.
        Speaker: Tamer Elkafrawy (ENHEP Egyptian Network of High Energy Physics (EG))
      • 18:30
        Cherenkov Telescope Array: An overview of research objectives 2h
        Cherenkov Telescope Array (CTA) is a next generation ground based very high energy gamma ray observatory. High energy gamma-rays, the most energetic form of the electromagnetic radiations, do not originate in our solar system and are important in the study of extrasolar, and especially extra-galactic astronomy. Thus CTA is believed to serve as an open observatory for a broad astrophysics community to provide a deep insight into the non-thermal high-energy universe. It will be used to study the most extreme and violent events in the Universe, from exploding stars, to black holes and rapidly rotating stars composed entirely of neutrons. It has the potential to detect gamma-radiation from dark matter, as yet undetected form of matter believed to make up around 20% of the total mass in the Universe. In this paper we provide an overview of the physics potential of the CTA, which includes the searches for the ultimate nature of the matter along with the origin of the cosmic ray and their impact on the constituents of the Universe. We also present a brief comparison of CTA with other observatories operating at other wavelength ranges of the electromagnetic spectrum.
        Speakers: Ms Afifa Hussain (UET Texila , Pakistan), Dr Nameeqa Firdous (RGC, Pakistan)
      • 18:30
        CHIPS-M cosmic ray benchmarking 2h
        CHIPS (CHerenkov detectors In mine PitS) has been proposed to drastically cut the cost of neutrino beam water Cherenkov detectors, focused on measuring the CP-violating neutrino mixing phase (δCP). A single detector module would contain an enclosed volume of purified water submerged in an existing lake, located in a neutrino beam. The staged detector would be deployed in a flooded mine pit in Northern Minnesota, 7 mrad off-axis from the existing NuMI beam. A small (35 ton) proof-of-principle model (CHIPS-M) has already been tested under the water. One of the instruments submerged inside CHIPS-M in autumn 2015 was a prototype detection unit, constructed at Nikhef. The unit contained hardware borrowed from the KM3NeT experiment, including 16 3" PMTs and readout electronics. In addition to testing the mechanical design and data acquisition, it was used to characterise the cosmic ray muon background. We present a preliminary analysis of the data and a benchmarked estimate of the cosmic ray muon rate in the proposed 10kt detector
        Speaker: Mr Maciej Pfuzner (UCL)
      • 18:30
        CMS detector tracking performances in Run II 2h
        With the start of Run II in June 2015, LHC has re-started delivering pp collisions. LHC has ultimately exceed a center of mass energy of 13 TeV and a bunch time separation of 25 ns with a mean of more than 25 inelastic collisions superimposed on the event of interest. In these new conditions, the CMS collaboration has re-calibrated and verified the performances of the whole detector. In particular, this talk is going to describe the CMS tracking strategy for Run II and the performances obtained through both direct and indirect measurements. Vertex finding, tracks properties and muon reconstruction efficiency measurement with tag and probe technique are going to be discussed as a direct measurement of tracking performances. In addition, the indirect estimation of pion reconstruction efficiency using as probes different decays of charmed and strange mesons will be presented.
        Speaker: Erica Brondolin (Austrian Academy of Sciences (AT))
      • 18:30
        Collectivity on p-Pb and p-p collisions 2h
        We study the collective effects measured on high multiplicity events on p-Pb and p-p collisions at LHC energies. By using the framework of the color string percolation model, which had described quantitatively good the collectivity and change on phase on nucleus-nucleus collisions from RHIC to LHC energies. We observed that the measurements are likely to correspond to a phase transition, and that the study of fluctuations could play a key role on understanding this systems.
        Speaker: Irais Bautista Guzman (Autonomous University of Puebla (MX))
      • 18:30
        Commissioning of CMS Forward Hadron Calorimeters with Upgraded Multi-anode PMTs and uTCA Readout 2h
        The high flux of charged particle interacting with the CMS Forward Hadron (HF) Calorimeter PMT windows introduced a significant background for the trigger and offline. During Long Shutdown 1, all of the original PMTs were replaced with multi-anode, thin window photomultipliers. At the same time, the back-end readout system was upgrade to uTCA readout. The experience with commissioning and calibrating the HF front-end is described as well as the online operational challenges of the uTCA system. The HF upgrade was successful and provided quality data for the 2015 data-analysis at 13 TeV.
        Speaker: Burak Bilki (University of Iowa (US))
      • 18:30
        Computing Infrastructure for the protoDUNE experiment at CERN 2h
        The DUNE experiment will aim to study fundamental parameters of neutrino oscillations with high precision. It will employ a uniquely large (40kt) Liquid Argon Time Projection chamber as the main component of its Far Detector. In order to validate major design elements and characterize the detector performance for various event types, an ambitious experimental program has been created which foresees construction of a large-scale DUNE prototype at CERN. The prototype will be used for testing with purpose-built beam line from the CERN SPS providing a few types of particles. The amount of data to be collected in this experiment is quite substantial and will require careful design of the DAQ and data handling systems, as well as mechanisms to distribute data to a number of the DUNE distributed computing sites. We present our approach to solving these problems by leveraging the experience of the LHC experiments.
        Speaker: Amir Farbin (University of Texas at Arlington (US))
      • 18:30
        Constraints on anomalous couplings at the Wtb vertex from the measurement of triple differential angular decay rates of single top quarks produced in the t-channel with the ATLAS detector 2h
        The t-channel production and decay of single top quarks is a unique probe of the Wtb vertex, providing simultaneous sensitivity to all of the "anomalous couplings", V_L, V_R, g_L and g_R. These four effective anomalous couplings have a direct connection with dimension-six operators coefficients in the effective field theory framework. To obtain constraints in the space of these parameters the triple differential decay rate of semileptonic top-quark decays collected in 20.3 fb^{-1} of proton--proton collisions at \sqrt{s} = 8 TeV using the ATLAS detector. Detector effects (resolution and efficiency) are deconvolved from the observed signal using novel Fourier techniques in particular a higher dimensional variant of the ordinary convolution theorem. Constraints on the top-quark polarization and the imaginary part of the coupling constant g_R are the world's most precise.
        Speaker: Jun Su (University of Pittsburgh (US))
      • 18:30
        Constraints on generalized nonstandard $tbW$ couplings 2h
        The most general analysis of top-bottom-W boson ($tbW$) interactions is performed based on an effective lagrangian constructed by dimension 6 effective operators invariant under $SU(3) \times SU(2) \times U(1)$ symmetry. Since the lagrangian includes four kinds of effective operators, four kinds of nonstandard couplings parameterizing contributions from those operators exist, which are generally complex numbers. We estimate constraints on those nonstandard couplings coming from current experimental data for top-decay processes. As a result, we find that those constraints are not so strong yet because cancellations occur among some of contributions from those nonstandard couplings. This contribution is going to be presented based on Ref. [1] and its updated result. [1] Z. Hioki and K. Ohkuma, ``Full analysis of general non-standard $tbW$ couplings,'' Phys. Lett. B752, 128 (2016) [arXiv:1511.03437 [hep-ph]].
        Speaker: Kazumasa OHKUMA (Okayama University of Science)
      • 18:30
        Contribution to the neutrino magnetic moment coming from 2HDM in presence of magnetic fields 2h
        The confirmation of the neutrino masses by oscillation phenomena, makes interesting the study of the magnetic moment (MDM) of the neutrinos in regions where exist magnetic fields, because of the implications of such phenomena on cosmology and astrophysics. The existence of a charged Higgs coming from a two Higgs doublet model in presence of a magnetic field, induces additional corrections to MDM of the neutrino, with respect to the standar model. We calculate and analyze such contributions in the parameter space of the two Higgs doublet model type I, II, III and 2HDM with neutrino specific. These analyses can help to interpret phenomena of stellar evolution in regions of high magnetic fields.
        Speaker: Mr Carlos Alberto Gomez Tarazona (Universidad Nacional de Colombia)
      • 18:30
        Corrections for initial and final state interactions of electrons in scattering processes on nuclear targets 2h
        Electron scattering data on nuclear targets are used to to model nuclear binding corrections to the scattering of neutrinos from neutrons and protons in nuclei. Recently, Coulomb corrections have been applied in the analysis of electron scattering experiments from nuclear targets at Jefferson lab. These corrections account for the changes in the energy of initial and final state electrons in the Coulomb field of the nucleus. Coulomb corrections were not applied in the analysis of earlier experiments at Stanford Linear Accelerator Center. We investigate a variety of interactions of initial and final state electrons in the nucleus that are not currently accounted for. We find that that the effect of radiation of additional photons by electrons bending in the field of the nucleus before and after an interaction with a bound nucleon is also significant.
        Speaker: Arie Bodek (University of Rochester (US))
      • 18:30
        Cosmic Rays Energy Spectrum observed by the TALE detector 2h
        We report on a cosmic ray energy spectrum measurement by the Telescope Array Low-Energy extension (TALE) fluorescence detector (FD). The TALE FD is an air fluorescence detector which is also sensitive to the Cerenkov light produced by shower particles. Low energy cosmic rays, in the PeV energy range, are detectable by TALE as "Cerenkov Events". Using these events, we measure the energy spectrum from a low energy of ~ 4 PeV to an energy greater than 100 PeV. Starting at around 100 PeV, TALE also observes showers by their fluorescence light; and above this energy fluorescence becomes the dominant light production mechanism by which most showers are observed. The event processing and reconstruction procedures are identical for both low and high energy regions. This allows for treating the Cherenkov events and Fluorescence events as a single data set and thus calculating a single cosmic rays energy spectrum based on this data set, which extends from an energy of ~ 4 PeV to above 1 EeV. In this talk, we will describe the detector, explain the technique, and present results from the measurement of the spectrum in this energy range by the Telescope Array experiment.
        Speaker: Prof. Tareq AbuZayyad (University of Utah)
      • 18:30
        Cross-section Measurements with the NOvA ND 2h

        Merged the following:

        The observation of neutrino oscillation provides evidence of physics beyond the standard model, and the precise measurement of those oscillations remains an important goal for the field of particle physics. NOνA will soon be one of the foremost experiments in that field. Taking advantage of a tightly focused off-axis view of the NuMI neutrino beam, and a finely instrumented liquid scintillator detector, NOνA has an excellent opportunity to make high precision measurements of neutrino interactions using its Near Detector. This presentation will explain how the design of the NOνA experiment enables a wide program of neutrino interactions research, describe the broad range of cross section and final state interactions which we are able to measure, and show early results from the NOvA Near Detector.

        The NOvA experiment is a long-baseline neutrino oscillation experiment designed to measure the rate of electron neutrinos appearance in a muon neutrino beam. It consists of two finely segmented, liquid scintillator detectors at 14 mrad off-axis in the NuMI beam. The NOvA Near Detector, located at Fermilab, provides an excellent opportunity to study neutrino-nucleus interactions which are important for neutrino oscillation measurements. This presentation will present one of the first such measurements from NOvA: neutrino-induced coherent-π0 production. Neutrinos can coherently interact with the target nucleus via neutral current exchange and produce a single, forward π0, which makes background to the νe appearance measurement. The analysis measures the coherent-π0 kinematics and cross-section and compares to model predictions, and also provides a data constraint on π0 production in the neutral current resonance and deep-inelastic interaction.

        NOvA is a long-baseline neutrino oscillation experiment optimized to observe νμ→νe transition in the 97% pure muon-neutrino NuMI beam originating at Fermilab. It consists of two functionally identical, nearly fully-active liquid-scintillator tracking calorimeters. The Near Detector at Fermilab is located 1 km from the NuMI beam target and is used to measure the neutrino energy spectrum before standard oscillations occur. Due to its proximity to the neutrino source, the detector records neutrino interactions with high statistics. The off-axis location of the detector results in a beam neutrino energy peak close to 2 GeV, an energy regime of particular interest to neutrino cross section modeling and future neutrino oscillation experiments. In this talk, I will present the measurement of the muon-neutrino charged current inclusive cross section using the first two years of the NOvA Near Detector data.

        Speakers: Alexander Radovic (College of William and Mary), Dr Kanika Sachdev (Fermilab)
      • 18:30
        Dark Higgs Channel for FERMI GeV γ-ray Excess 2h
        Dark Higgs is very generic in dark matter models where DM is stabilized by some spontaneously broken dark gauge symmetries. Motivated by the FERMI observation of ∼GeV scale γ-ray excess from the galactic center (GC), we investigate a scenario that a pair of dark matter X annihilates into a pair of dark Higgs H2, which subsequently decays into standard model particles through its mixing with SM Higgs boson. Besides the two-body decay of H2, we also include multibody decay channels of the dark Higgs. We find that the best-fit point is around MX≃95.0GeV, MH2≃86.7GeV, ⟨σv⟩≃4.0×10−26cm3/s and gives a p-value ≃0.40. Implication of this result is described in the context of dark matter models with dark gauge symmetries. Since such a dark Higgs boson is very difficult to produce at colliders, indirect DM detections of cosmic γ-rays could be an important probe of dark sectors, complementary to collider searches.
        Speaker: pyungwon ko (Korea Inst. for Advanced Study (KIAS))
      • 18:30
        Design and Optimization of SuperCDMS SNOLAB Low-Mass Detectors 2h
        CDMSlite, the low-mass SuperCDMS Soudan Dark Matter search, operated detectors at high crystal voltages to exploit the large Luke-Neganov phonon energy gain, allowing for higher statistics due to lower energy thresholds. The first runs of this search were able to push cross-section limits to sub 10 GeV masses, leading the field in this regime. To push to even lower masses and cross section limits for SuperCDMS SNOLAB, we are developing specialized high voltage detectors with further improved phonon energy resolution by exploiting lower Tc TES sensors and improving “ballistic” Luke-Neganov phonon collection. These high voltage detectors aim to achieve 10 eV phonon energy resolution, translating to sub electron-volt nuclear recoil energy resolution, and reach within an order of magnitude of the coherent neutrino scattering floor. These design improvements have come through an R&D program that has shed light on aspects of the phonon sensor design that limit energy transport efficiency, and experience with CDMSlite, which highlighted the need for highly uniform fields in Luke-Neganov gain enhanced devices. I will discuss the design and optimization of these detectors, focusing on the requirements to understand nuclear recoil energy scale, separate surface and bulk events, and maximize energy collection efficiency both at the crystal surfaces and in our phonon sensors.
        Speaker: Noah Kurinsky (SLAC/Stanford)
      • 18:30
        Detecting dark matter with scintillating bubble chambers: Results from a 35-gram prototype xenon bubble chamber 2h
        The bubble chambers developed by the PICO collaboration for dark matter detection feature both unmatched electron recoil background rejection and the unique ability to work with a variety of target liquids, properties that have led to several world-leading direct detection limits on the WIMP-proton spin-dependent cross section. Existing bubble chambers, however, are threshold detectors with weak discrimination against those rare backgrounds that do meet bubble nucleation criteria. These backgrounds differ from the WIMP signal by orders of magnitude in total energy deposited in the detector, and can be eliminated if a liquid scintillator is chosen as the superheated target in a PICO-style device. We will present results from the 35-gram prototype liquid xenon bubble chamber at Northwestern University, which aims to achieve the first demonstration of simultaneous scintillation readout and bubble nucleation. If successful, this device will open the door to a new class of detectors with the electron rejection and position reconstruction of a bubble chamber, the energy resolution of a liquid scintillator, and the scalability of either.
        Speakers: C Eric Dahl (Northwestern University), Dr Jianjie Zhang (Northwestern University)
      • 18:30
        Detector optimization at CEPC 2h
        The detector optimization is a critical task in the design of the CEPC detector to ensure that the physics goals of the CEPC project will be achieved. On one hand, in order to make the best use of all Higgs bosons generated at CEPC, the detector design should consider high-efficiency reconstruction and precision measurement of all the physics objects including leptons and jets, and of other key spatial and kinematic variables including the displaced vertices, charged track trajectories, missing energy and momentum of jets. . On the other hand, the cost and the operation of the detector , such as power consuming and active cooling, should also be taken into account. Starting from a baseline that follows the ILD detector design, a series of detector optimization studies have been performed. This talk will cover the progresses and results.
        Speaker: Dr Gang LI (Institute of high energy physics)
      • 18:30
        Developing Detectors for Scintillation Light in Liquid Argon for DUNE 2h

        The concept for the 10-kiloton scale Far Detector modules for the Deep Underground Neutrino Experiment (DUNE) utilizes liquid argon Time Projection Chambers (TPCs). To fully exploit the physics opportunities (measurement of CP violation in oscillations of beam neutrinos, plus non-beam based investigations including studies of supernova neutrino bursts and searches for nucleon decay), the TPC’s will be augmented with a system to detect the 128-nm scintillation photons produced in conjunction with the ionization signal. We have carried out detailed studies of the response of prototype photon detectors consisting of light guide assemblies employing wavelength shifter(s) to first convert the VUV light to wavelengths that match the silicon photomultiplier (SiPM) read out. Specifically, we report on a series of experiments conducted in a 460-liter dewar located at the liquid argon detector R&D facility at Fermilab. The large-volume setup provides an opportunity to conduct studies with multiple photon detectors in a controlled environment with filtration and purity monitoring. An external hodoscope allows for the selection of through-going cosmic muons. By simultaneous testing of prototypes of differing designs, we have measured their relative efficiencies. Additional work is underway to determine absolute efficiency. We also report the results of studies of the time-structure of the scintillation signal and detector response under varying experimental conditions.

        Speaker: Bruce Howard (Indiana University)
      • 18:30
        Development of a high performance characterization setup for SiPMs and MPGDs towards their integration in mid-large scale systems 2h
        Abstract: supported by a common funded project RD51-CERN, a groundbreaking laboratory for training, development, fabrication, applications and innovation with SiPMs and MPGDs and their related technology has been finally commissioned at Universidad Antonio Narin ̃o (UAN) in Colombia. Silicon Photomultipliers (SiPMs) and Micro-Pattern Gas Detectors (MPGDs) are featured by their remarkable space and time resolution, high gain, robustness and large stability for a wide range of radiation and particles. The UAN expertise on such kind of devices arises from the active contribution to the particle physics community (NEXT-CSIC, RD51-CERN) and optical communications industry (VLC-Colombia) among others. The UAN has developed an exhaustive characterization protocol and setup to ensure a reliable electrical response of SiPMs and MPGDs under several conditions defined by the user, leading to quantify their intrinsic features at a high rate data production and by issuing a detailed final diagnosis of their performance. The backbone of the characterization platform is just the SiPMs/MPGDs detection units forming the core of a large modular hardware chain. Main hardware PnP (Plug-and-Play) units as a controlled temperature module by GPIB (General Purpose Interface Bus), as well as GPIB controlled low/high voltage (LV/HV) sources and oscilloscopes with advanced triggers and fast viewing modes completes the whole loop of the aforementioned setup. The whole hardware chain featured by its hybrid homemade and manufacturer design elements, runs programmable execution flows written as MatLab and Labview libraries switched by fast and powerful interfaces. The resulting high rate data production is filtered and sort by an optimized computing cluster where the data flow coming from the chain is quickly analyzed. In this contribution, the main achievements and services generated from the UAN detectors laboratory are presented, where a high performance electrical characterization protocol and setup has been successfully and gradually commissioned.
        Speaker: Javier Fernando Castaño Forero (Universidad Antonio Nariño)
      • 18:30
        Development of Radiation Hard Scintillators 2h
        Modern high-energy physics experiments are in ever increasing need for radiation hard scintillators and detectors. In this regard, we have studied various radiation-hard scintillating materials such as Polyethylene Naphthalate (PEN), Polyethylene Terephthalate (PET), our prototype material Scintillator X (SX) and Eljen (EJ). Scintillation and transmission properties of these scintillators are studied using stimulated emission from a 334 nm wavelength UV laser with PMT before and after certain amount of radiation exposure. Recovery from radiation damage is studied over time. While the primary goal of this study is geared for LHC detector upgrades, these new technologies could easily be used for future experiments such as the FCC and ILC. Here we discuss the physics motivation, recent developments and laboratory measurements of these materials.
        Speaker: Emrah Tiras (University of Iowa (US))
      • 18:30
        Development of reconstruction and analysis tools & sensitivity study of the SuperNEMO demonstrator 2h
        The **SuperNEMO demonstrator**'s unique design, combining both tracking and calorimetry techniques, provides essential **topological informations**. Indeed, fully reconstructing the event kinematics not only allows a powerful background discrimination but also gives access to a variety of event topologies which can be used to measure the different background contributions. The SuperNEMO software relies on a range of algorithms to ensure a faithful event reconstruction. The improved detector performance for $\gamma$ detection coupled to new **$\gamma$-reconstruction algorithms**, based on geometrical and Time-of-Flight criteria, will not only improve the measurements of the $\gamma$-emitter backgrounds ($^{208}$Tl, $^{214}$Bi...) but also increase the sensitivity for the search of $\beta\beta$-decays to the excited states. The poster will also present how the use of topological informations in **multivariate analysis** could improve the SuperNEMO demonstrator sensitivty, both for the search of the **neutrinoless double beta decay** and for the background control.
        Speakers: Emmanuel Chauveau, Frédéric Perrot
      • 18:30
        Dimesonic states with the Hellmann Potential 2h
        We have studied the dimesonic (meson-antimeson) loosely bound states with heavy flavor meson combination. We have applied the potential model approach to extract the mass spectra and various decay properties of the dimesonic system. Our loosely bound system approximated as of deuteron-like system. The Hellmann potential of the form V($r{}_{12}$)= $\frac{-K{}_{mol}}{r_{12}}$+B$\frac{e{}^{-cr_{12}}}{r_{12}}$ is being used for the binding of the system with the One Pion Exchange Potential for long range tail. We try to explain spectroscopy of the famous and controversial X Y Z states with the molecular dimesonic combinations.
        Speakers: Dr Ajaykumar Rai (Sardar Vallabhbhai National Institute of Technology, Surat, India), Mr Dharmesh P. Rathaud (Sardar Vallabhbhai National Institute, Surat, India)
      • 18:30
        Direct Detection: The Search for Dark Matter Particles with LUX and LZ 2h
        Of the four fundamental interactions, only gravity has hinted at the existence of dark matter. Yet the astrophysical evidence gleaned from this interaction is now overwhelming, and its implications striking: dark matter constitutes nearly 6/7 of the universe’s matter composition, a ratio that holds true in our own Milky Way. The evidence further indicates that this mysterious substance participates in neither the strong nor electromagnetic interactions, its indifference to the latter having inspired its “dark” moniker. The experimental particle physicist’s only hope, then, is in the weak force. Miraculously, calculations of thermal equilibrium in the early universe strongly validate such faith in the weak interaction. Here on Earth, devices using liquid xenon as a target have proven to be an invaluable tool in the search for these weak interactions with dark matter particles. Liquid xenon detectors are expandable, straightforward to calibrate, and have extensively studied discriminating power between expected dark matter and background signals. The LUX and LZ programs represent the realization of all these attributes, and are the focus of my presentation.
        Speaker: Curt Nehrkorn (University of California Santa Barbara)
      • 18:30
        Double Calorimetry System of JUNO experiment 2h

        JUNO is a Liquid Scintillator Antineutrino Detector (LAND) currently under construction in the south of China (Jiangmen city, Guangdong province). Once completed, it will be the largest LAND ever built, consisting in a 20 kt target mass made of Linear Alkyl-Benzene liquid scintillator, monitored by roughly ~18000 twenty-inch high-QE photomultipliers (PMTs) providing a ~80% photo-coverage. Large photo-coverage and large QE are two key requirements of the experiment to yield ~1200PE/MeV needed to achieve the potentially unprecedented ~3% total energy resolution at 1 MeV. This is mandatory to determine the neutrino mass ordering. In order to address the systematic uncertainty challenge causing the non-stochastic component of the energy resolution, the JUNO collaboration conceived a novel neutrino detector design comprising a second layer of small PMTs. This is geared to provide a second calorimetry handle with complementary systematic budget, allowing a combined, more precise and more accurate energy scale definition. We refer to this calorimetry redundancy system as double-calorimetry. In my talk, I will review the motivations which led us to introduce double-calorimetry in JUNO, including the trailblazing capabilities of this approach, as well as the technical challenges associated to its realisation and implementation.

        Speaker: Giuseppe Salamanna (Roma Tre Universita Degli Studi (IT))
      • 18:30
        Drell-Yan differential cross section measurement at CMS 2h
        Measurement of the differential Drell–Yan cross sections in the dimuon channel is presented. It is based on proton– proton collision data at sqrt(s) = 13 TeV recorded with the CMS detector at the LHC. The differential cross section in the dilepton mass range 15 to 3000 GeV is measured and corrected to the full phase space.
        Speaker: Kyeongpil Lee (Seoul National University (KR))
      • 18:30
        Effective theory for Sudakov logarithms in lepton-nucleon interactions 2h
        A new framework for computing electromagnetic radiative corrections to precision measurements involving lepton-nucleon interactions is presented. A class of two-loop corrections to elastic electron-proton scattering is implemented and the status of the proton radius puzzle is reviewed. Related applications to long-baseline neutrino oscillation measurements, muon-electron conversion, and hadronic inputs to muon g-2, are discussed.
        Speaker: Richard Hill
      • 18:30
        Electromagnetic and transport properties of QGP within PLSM approach 2h

        After a short review on the status of QGP, we present a systematic analysis for the electromagnetic and the transport properties of this new-state-of-matter under extreme conditions of high temperature and density and finite magnetic and electric fields. The possible influences on the hadron-quark phase transition(s) and the QCD equations of state are determined from the mean field approximation of the Polyakov linear sigma model (PLSM). We also determine the electric and heat conductivity and the bulk and shear viscous properties by means of Green-Kubo correlation and Boltzmann master equation with Chapman-Enskog expansion

        Speaker: Prof. Abdel Nasser Tawfik (Egyptian Center for Theoretical Physics (ECTP) and World Laboratory for Cosmology And Particle Physics (WLCAPP))
      • 18:30
        Electron Detection in the Reference Near Detector for DUNE and Constraints on the Anti-electron-neutrino Normalization 2h
        The fine-grained tracker (FGT), the reference near detector for DUNE, is designed to provide a precise determination of the electron/positron identification, momentum, and energy. The particle identification involves measurements of the transition-radiation in the high-resolution straw tube tracker (STT) and the profile of the energy deposition in the ECAL; the momentum is determined from the track reconstruction in the STT within a dipole B-field. The talk summarizes the detector strategy for these measurements. The ability to reconstruct the electron/positrons and the hadrons from the anti-electron neutrino interactions permits an accurate determination of the anti-electron neutrino content of the beam.
        Speaker: Hongyue Duyang (University of South Carolina)
      • 18:30
        Electroweak production of Higgs boson pairs in 2HDMs 2h
        One of the main features of a two Higgs doublet model (2HDM) is the presence of two additional neutral Higgs states besides the one mimicking the recently observed ~125 GeV state. These additional Higgs bosons can be produced at the LHC either singly via gluon fusion or in pairs with each other and with the SM-like state. When studying the pair production of Higgs bosons, generally the emphasis is laid on gluon-initiated processes, while the electroweak (EW) production is overlooked assuming its contribution to be highly subleading. In order to quantify this contribution, we analyzed in detail the cross sections corresponding to various possible combinations of two Higgs states obtainable at the 13 TeV LHC in the Z2-symmetric 2HDM of types I and II. For this purpose we first performed thorough scans of the parameter spaces of these models to obtain points satisfying the most relevant constraints from EW precision data, b-physics and the LHC direct searches for the non-SM-like Higgs bosons. We found that for certain Higgs state combinations the EW pair production can compete with QCD production. In particular, where the sum of the masses of the lightest scalar and pseudoscalar Higgs bosons is smaller than the Z boson mass, the EW pair production can dominate over the gluon-initiated process, to which only the QCD box diagram contributes, by orders of magnitude in the type-I 2HDM.
        Speaker: Dr Shoaib Munir (KIAS, Seoul)
      • 18:30
        Energy-Position Correlation Anisotropy of Ultra-High Energy Cosmic Rays with Telescope Array Data: New Indications of the Northern Hotspot 2h
        An Ultra-High Energy Cosmic Ray (UHECR) anisotropy search has been done using apparent originating position and the incident particle energy using seven years of Telescope Array data. The result indicates evidence for a source in the vicinity of the previously reported Northern hotspot. Cosmic ray particle deflection away from sources by magnetic fields, are expected to create correlations between energy and location. A study of this effect should include as few assumptions as possible and be robust against background noise events. An unbinned energy-opening angle rank correlation makes no assumptions regarding source distribution, event composition, originating energy spectrum, or magnetic field configurations.
        Speaker: Jon Paul Lundquist
      • 18:30
        Evaluation of the curvature-correction to the surface tension coefficient from the EOS of nuclear matter 2h
        A new method to evaluate the curvature correction term to the surface tension coefficient based on the nuclear equation of state, is suggested. Among the advantages of the introduced approach one can mention the minimal set of assumptions used and the possibility to link the bulk and surface properties of the nuclear matter. In the present work it is shown that the “gedanken” experiment with the infinite nuclear matter and a chosen volume $V$ in it can give the possibility to evaluate the Tolman $\delta$ -correction for any EOS of the form $\Delta{P}=P-P_0=f\left(\frac{V_0-V}{V_0}\right)$ describing the system evolution along the coexistence curve. It is also obtained the temperature dependence of the curvature correction term in the surface tension. It can be seen that with increasing temperature the role of the curvature correction term increases. That might be important when analyzing the results of the high energy heavy ion collision experiments. E.g. in studying the properties of the hadronic matter in the vicinity of critical point and in calculating yields of light fragments. The obtained quantitative results for the correction term are in accord with the existing data and with the theoretical predictions regarding the interparticle distance.
        Speaker: Konstantin Cherevko (Taras Shevchenko National University of Kiyv)
      • 18:30
        Event Reconstruction and Design Optimisation for the CHIPS Experiment 2h
        The proposed CHIPS water Cherenkov detector faces some unique design challenges that arise from the aim to reduce the cost by two orders of magnitude compared to previous water Cherenkov detectors. Reconstruction algorithms have been developed using charge and time information from all PMTs. The charge component is based on a technique used by MiniBooNE whereas the time component has been written from first principles. The simulated detector performance has been studied for different choices of PMT size, PMT layout within the detector and water clarity. Furthermore, the relative merits of the charge and time components have been studied to determine whether PMTs with excellent charge or timing resolution would provide the optimal design in terms of both cost and physics reach.
        Speaker: Dr Leigh Whitehead (UCL)
      • 18:30
        Evidence for the electroweak Z gamma production in association with two jets at sqrts = 8 TeV 2h
        Evidence for electroweak associated production of a Z boson, a photon and two jets, where the Z boson decays into electron or muon pairs, is presented. The measurement is based on a sample of proton-proton collisions collected by the CMS detector at a center of mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7fb−1. Limits on anomalous quartic gauge couplings are set with a binned profile likelihood method based on the MZA distribution.
        Speaker: Zhaoru Zhang (Peking University (CN))
      • 18:30
        Expected performance of the ATLAS Inner Tracker upgrade 2h
        The design of the ATLAS Inner Tracker upgrade is currently underway. This tracking detector, consisting of silicon pixel and strip modules, will replace the current ATLAS Inner Detector in order to successfully reconstruct tracks originating from charged particles produced at the high collision rate expected from the High-Luminosity Large Hadron Collider. The expected performance of the most recent simulated Inner Tracker layouts under consideration is presented.
        Speaker: Simon Viel (Lawrence Berkeley National Lab. (US))
      • 18:30
        Falsifying Baryogenesis Mechanisms through Observation of Lepton Number and Flavor Violation 2h
        The presence of $ (B-L) $ violating interactions is a necessary ingredient in many models trying to explain the observed baryon asymmetry of the universe, but if they are found to be strong they herald the occurrence of a temperature range where any pre-existing $ (B-L) $ asymmetry is washed out. We demonstrate in a model-independent approach that the observation of lepton number violating processes can rule out or strongly disfavor certain mechanisms of baryogenesis, including leptogenesis scenarios. We will especially focus on non-standard mechanisms of neutrinoless double beta decay as well as potential lepton number violating processes at the LHC. If such processes are observed associated to a certain energy scale $ \Lambda_{LNV} $, baryogenesis mechanisms acting at higher scales will be generally disfavored. We will further describe how the argument can be strengthened by using information from lepton flavor violating processes such as $ \mu\to e\gamma $. If additionally observed, it would indicate the presence of interactions that equilibrate different lepton flavors, closing the loophole of asymmetries being stored in different lepton flavors. We will outline in detail how baryogenesis mechanisms are affected by certain observations.
        Speaker: Frank Deppisch (University College London (UK))
      • 18:30
        Feasibility study of heavy ion collision physics at NICA JINR 2h
        The project NICA (Nuclotron-based Ion Collider fAcility) is aimed to study hot and baryon rich QCD matter in heavy ion collisions in the energy range up to √s_NN = 11 GeV. The heavy ion program includes the study of collective phenomena, dilepton, hyperon and hypernuclei production under extreme conditions of highest baryonic density. This program will be performed at the Nuclotron accelerator extracted beams with the BM@N (Baryonic Matter at Nuclotron) set-up and with the MPD (MultiPurpose Detector) at the NICA collider with the average luminosity of L = 1⋅10^27 cm−2⋅s−1 (for gold-gold collisions at √s_NN exceeding 9 GeV).
        Speaker: Prof. Vladimir Kekelidze (Joint Inst. for Nuclear Research (RU))
      • 18:30
        Fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at $\sqrt{s} = 13$ TeV with the ATLAS experiment. 2h
        In this poster measurements of fiducial and differential cross sections are presented for Higgs boson production in the diphoton channel at a centre-of-mass energy of $\sqrt{s} = 13$. Diphoton candidate events from proton-proton collisions recorded in 2015 and 2016 are analyzed by a fit to the diphoton invariant mass spectrum. The extracted signal yields are corrected for effects of detector inefficiency and resolution and compared to state-of-the-art theoretical predictions. Differential cross sections are also presented, as a function of variables related to the photon kinematics and the jet activity produced in the Higgs boson events.
        Speaker: Cong Peng (Chinese Academy of Sciences (CN))
      • 18:30
        Firmware design of digital readout board for CMS and TOTEM Precision Proton Spectrometer Timing Upgrade projects 2h
        For the CMS and TOTEM Precision Proton Spectrometer Project, a firmware that controls the digital readout board was designed to perform the data readout from the front-end electronics of the Quartz Timing Cherenkov Detectors and the Diamond Detectors. Since the readout board and the corresponding FPGA is Rad-Hard, the firmware is designed to be protected with a Triple Module Redundancy. The firmware is required to reformat the data packets and transmits the information to the CMS and the TOTEM data acquisition systems via optical data links or USB interface. A dual-bus FIFO is introduced to enable data streams between the HPTDC input and reformatting block. The firmware offers to set threshold voltage for the multi-channel analogue discriminator and bias voltage for the timing detectors, and to monitor the board temperature in the DAQ system. For the test purposes, the firmware is able to communicate through test-specified extension data links by the defined time-modulated dual-direction protocol. The firmware has been designed to be capable of handling HPTDC digitizers for high-resolution time measurement of the leading and trailing edges of hit pulses with the resolution of 10 - 20 ps at 80 MHz event rates. To facilitate fast data reformatting an internal adder with maximum frequency of 320 MHz is also implemented.
        Speaker: Alireza Kokabi (School of Particles and Accelerator Inst. for Res. in Fundam. S)
      • 18:30
        First measurement of radioactive isotope production through cosmic-ray muon spallation in Super-Kamiokande IV 2h
        Cosmic-ray-muon spallation-induced radioactive isotopes with β decays are one of the major backgrounds for solar, reactor, and supernova relic neutrino experiments. Unlike in scintillator, production yields for cosmogenic backgrounds in water have not been exclusively measured before, yet they are becoming more and more important in next generation neutrino experiments designed to search for rare signals, for example, the SuperK-Gd’s SRN search. We have analyzed the low-energy trigger data collected at Super-Kamiokande IV and determined the yields of 12B, 12N, 16N and 9Li in the water for the first time. We also placed limits on the yields of 11Be, 8He/9C, and 15C and gave the combined yield of 8Li and 8B. Agreement of the data with theoretical calculations is in general much better in water than in scintillator; only those isotopes produced as a result of ejecting many nucleons of 16O significantly deviate by about a factor of four from predictions.
        Speaker: Shaomin Chen (Tsinghua University)
      • 18:30
        Flavour studies at FCC-ee 2h
        A possible long-term strategy for high-energy physics at colliders considers a tunnel of about 100 km circumference, which takes advantage of the present CERN accelerator complex. A possible first step of the project is high-luminosity e+e− collider aimed at studying comprehensively the electroweak scale with centre-of-mass energies ranging from the Z pole up to and beyond the tt¯ production threshold. A 100 TeV pp collider is considered as the ultimate goal of the project. The unprecedented statistics at the Z pole (O(1012−13) Z decays potentially delivered by the e+e− collider can be studied in particular to explore further the Flavour physics case at large. The possible measurements of rare decays of b-hadrons, which can complement the anticipated knowledge from the foreseen b-physics programs, will be discussed. These data can be used as well to study lepton-flavour-violating Z decays, which would serve as an indisputable evidence for new physics if seen. The constraints to be set on models embedding additional right-handed sterile neutrinos are discussed. Heavy sterile neutrinos, addressing in some models both the questions of dark matter and baryonic asymmetry in the Universe, can also be searched for directly at FCC-ee. Prospects for such direct searches are described.
        Speaker: Stephane Monteil (Univ. Blaise Pascal Clermont-Fe. II (FR))
      • 18:30
        Freezeout conditions and dynamical fluctuations within UrQMD and HRG approaches at high density 2h
        The dependence of different particle ratios on nucleus-nucleus center-of-mass energy, which can be related to the chemical potential, is studied within the hadron resonance gas (HRG) and Ultra-relativistic Quantum Molecular Dynamic (UrQMD) approach. For UrQMD two different types of phase transitions are taken into consideration, namely crossover and first order, while HRG implements fully statistical aspects in describing the particle production and their correlations, restrictively in the hadron phase. The calculations cover energies ranging from 3 to 39 GeV. The freezeout parameters, temperature (T) and baryon chemical potential , are deduced by fitting the particle ratios estimated from hybrid UrQMD with the calculation from HRG at [11.5, 19.6, 27and 39] GeV, which are chosen to compare with STAR beam energy scan. The results agree well with the parameters which are independently determined from statistical fitting of the experimentally measured particle ratios. Furthermore, the net-charge fluctuations for UrQMD ratios K/π, P/π and K/P, and from HRG are compared with the available STAR and NA49 measurements. The good agreement justifies the conclusion that both UrQMD and HRG are suitable to explain both freezeout parameters and the dynamical net-charge fluctuations.
        Speaker: Abdel Nasser Tawfik (ENHEP Egyptian Network of High Energy Physics (EG))
      • 18:30
        Future XMASS project 2h
        XMASS is a single phase liquid xenon (LXe) detector, designed for a program of physics targets. As a first step in the program, the XMASS-I detector started operation for direct Dark Matter search with 832 kg of LXe in the sensitive volume from Sep. 2010. Various dark matter results have been provided by the XMASS-I so far. As a future project to improve its Dark Matter sensitivity, we are planning to make a new detector. Since BG reduction is the most crucial subject for higher sensitivity, to reduce background now we keep studying many components, such as development of new non-flat photo-cathode PMT, screening of materials for all components and detail detector design with simulation study. In this presentation, we will present detail of these future detector components and expected physics results from the detector.
        Speaker: Ko Abe (ICRR, the University of Tokyo)
      • 18:30
        Gamma-ray signal from Dark Matter Annihilation mediated by mixing slepton 2h
        In order to reconcile the tension between the collider SUSY particle search and the dark matter relic density constraint, we free ourselves from the simplest CMSSM model and find a large parameter space in which a sub-TeV bino dark matter may comply with all the current experimental constraints. In this so-called incredible bulk region, sleptons have a nonzero mixing angle while the dominant dark matter annihilation product is lepton-anti-lepton pair. We have explored this alternative and studied the resultant monochromatic gamma-ray signal produced by the $\gamma\gamma$ and $\gamma Z$ final state on top of the continuous internal bremsstrahlung signal. The spectrum will give some indications to the mixing angle and CP-violation phase of the slepton sector. Future ground-based and satellite-based experiments will reach the sensitivity of $10^{-29}\text{cm}^{3}/\text{s}$ for dark matter annihilation cross section and a 1% energy resolution at $\sim 100$GeV will be able to detect our proposed signal through a cut-off analysis.
        Speaker: Mr Fei Teng (University of Utah)
      • 18:30
        Gas Filled RF Resonator Hadron Beam Monitor for Intense Neutrino Beam Experiments 2h
        MW-class beam facilities are being considered all over the world to produce an intense neutrino beam for fundamental particle physics experiments. A radiation-robust beam monitor system is required to diagnose the primary and secondary beam qualities in high-radiation environments. We have proposed a novel gas-filled RF-resonator hadron beam monitor in which charged particles passing through the resonator produce ionized plasma that changes the permittivity of the gas. The sensitivity of the monitor has been evaluated in numerical simulation. A signal manipulation algorithm has been designed. A prototype system will be constructed and tested by using a proton beam at the MuCool Test Area at Fermilab.
        Speaker: Katsuya Yonehara (Fermilab)
      • 18:30
        GEM*STAR Accelerator-Driven Subcritical System for Improved Safety, Waste Management, and Plutonium Disposition 2h
        Operation of high-power SRF particle accelerators at two US national laboratories allows us to consider a less-expensive nuclear reactor that operates without the need for a critical core, fuel enrichment, or reprocessing. A multipurpose reactor design that takes advantage of this new accelerator capability includes an internal spallation neutron target and high-temperature molten-salt fuel with continuous purging of volatile radioactive fission products. The reactor contains less than a critical mass and almost a million times fewer volatile radioactive fission products than conventional reactors like those at Fukushima. We describe GEMSTAR , a reactor that without redesign will burn spent nuclear fuel, natural uranium, thorium, or surplus weapons material. A first application is to burn 34 tonnes of excess weapons grade plutonium as an important step in nuclear disarmament under the 2000 Plutonium Management and Disposition Agreement **. The process heat generated by this W-Pu can be used for the Fischer-Tropsch conversion of natural gas and renewable carbon into 42 billion gallons of low-CO2-footprint, drop-in, synthetic diesel fuel for the DOD.
        Speaker: Rolland Johnson (Muons, Inc.)
      • 18:30
        gFEX, the ATLAS Calorimeter Global Feature Extractor for the Phase-I upgrade of the ATLAS experiment 2h

        The Global Feature Extractor (gFEX) module is a component of the Level I trigger system for the ATLAS experiment planned for installation during the Phase I upgrade in 2018. This unique single ATCA board with multiple high speed processors on board will receive coarse-granularity information from all the ATLAS calorimeters enabling the identification in real time of large radius jets for capturing Lorentz-boosted objects such as top quarks, Higgs, Z and W bosons. The gFEX architecture is also suitable for the calculation of global event variables such as missing transverse energy, centrality for heavy ion collisions and event-by-event pile-up subtraction. 

        gFEX will use 3 processor Xilinx Ultra-scale FPGAs for data processing and one single system-on-chip processor, ZYNQ, for configuring all the processor FPGAs and monitoring the board status. The current pre-prototype board which includes one ZYNQ and one Vertex-7 FPGA has been designed for testing and verification. The design of the final gFEX module as well as the performance of the pre-prototype will be presented. This unique board will allow us to increase the sensitivity of the ATLAS experiment in the high luminosity environment expected during the phase I of ATLAS data taking. Although the board is being designed specifically for the ATLAS experiment, it is sufficiently generic that it could be used for fast data processing at other HEP or nuclear physics experiments.

        Speaker: David Miller (University of Chicago (US))
      • 18:30
        Global status of light sterile neutrinos 2h
        Sterile neutrinos are singlets of the Standard Model gauge symmetries which do not have the standard weak interactions but can couple to the active neutrinos through the Lagrangian mass term. The possible existence of sterile neutrinos is currently a hot topic of theoretical and experimental research which could provide valuable information on the physics beyond the Standard Model. I shall review the global status of the light sterile neutrinos at the eV mass scale. The reactor, gallium and Liquid Scintillator Neutrino Detector anomalies are briefly described and interpreted as indications of the existence of short-baseline oscillations which require the existence of light sterile neutrinos. The global fits of short-baseline oscillation data in $3 + 1$ and $3 + 2$ schemes are discussed, together with the implications for $\beta$-decay, neutrinoless double-$\beta$ decay and cosmological measurements. Finally, I shall conclude with with a summary of future perspectives. S. Gariazzo, C. Giunti, M. Laveder, **Y. F. Li** and E. M. Zavanin, ``Light sterile neutrinos'' (Topical Review and Featured Article) J. Phys. G **43**, 033001 (2016) [arXiv:1507.08204].
        Speaker: Yufeng Li (Institute of High Energy Physics, Chinese Academy of Sciences)
      • 18:30
        GlueX experiment at Jefferson Lab 2h

        The GlueX experiment at Jefferson Lab is a fixed target photoproduction experiment located in the newly-constructed Hall D. It is designed to study the spectroscopy of a variety of hadrons, with special emphasis on hybrid mesons. The experiment uses a 12 GeV electron beam incident on a diamond radiator to produce a linearly-polarized tagged bremsstrahlung photon beam of energies up to 12 GeV, peaking at 9 GeV. This photon beam is incident on a liquid hydrogen target surrounded by a spectrometer that combines charged particle tracking, electromagnetic calorimetry, and time-of-flight measurements . Initial commissioning data were taken at lower beam energies in the Fall of 2014 and Spring of 2015, with a final commissioning run at full energy scheduled in the Spring of 2016. Results for detector performance and preliminary results for the reconstruction of several exclusive final states will be presented.

        Speaker: Sean Dobbs (Northwestern University)
      • 18:30
        High rate photo-detection and improved spacial resolution with the Inside-Out LAPPD$^{\text{TM}}$ 2h
        The Large-Area Picosecond Photo-Detector (LAPPD$^\text{TM}$) is a planar, 20 $\times$ 20 cm$^2$ photo-tube that is being developed for sub-pico second timing resolution and large area detector coverage. The first generation LAPPD$^\text{TM}$ uses transmission line anode strips to carry amplified signals from the inside of the vacuum-tube to external electronics. A second generation design has been proposed to improve spatial resolution and to allow operation in high event rate environments. The *Inside-Out* LAPPD uses an internal (inside) ground plane that capacitively couples to an external (outside) anode for electrical readout. Measurements of the Inside-Out detector's analog bandwidth and position reconstruction capabilities provide a comparison to the first generation LAPPD$^{\text{TM}}$
        Speakers: Andrey Elagin (University of Chicago), Bernhard Adams (Incom, Inc.), Eric Spieglan (University of Chicago), Evan Angelico (University of Chicago), Todd Seiss (University of Chicago (US))
      • 18:30
        Hybrid Gaseous Detector Module for CEPC-TPC at IHEP 2h
        A study group was formed in Beijing in September 2013 to investigate the feasibility of a high energy Circular Electron Positron Collider (CEPC), the CEPC provides a much cleaner environment than the LHC, and it is ideally suited for studying the Higgs. For the preliminary Concept Design Report (CDR) initial study, the International Linear Detector (ILD) has been chosen as the starting point for the CEPC detector design. In the paper, some critical challenges of the CEPC Time Projection Chamber (TPC) detector‘s requirements were been compared with the circular collider and the linear collider firstly. For the consequent frequency of the beam structure (approximately 4μs of the cycle time) in the circular collider without power-pulse mode, the detector baseline design would be operated without the gating device to reduce the more serious ions back flow in the longer working time. The CEPC preliminary design, for instance, has a significantly shorter focal length L* of 1.5m than that of the ILC design, the position of the final focusing magnet (QD0) will be close to IP in the machine detector interface and will be inside of TPC's drift region. Therefore, the continuous mode will lead to the serious ion feed back without gating device and the more obvious effects of electromagnetic distortion needs to be considered. We estimated the momentum resolution with the different geometry of the TPC detector based on the ILD's size, and the new detector module's prototype was developed in IHEP. Finally, some results of the simulation and evaluation of the geometry, voxel occupancy, readout size, operation mixture gas and momentum resolution are be given, and the hybrid structure gaseous detector of the Micromegas with GEM preamplifier described. The preliminary performance shown that it could get the continuous ion suppression and more stable working time.
        Speaker: Dr Huirong Qi (Institute of High Energy Physics, CAS)
      • 18:30
        Identification and Elimination of Bubble Chamber Backgrounds for Dark Matter Detection 2h
        The PICO Collaboration continues to produce the most stringent direct detection limits on spin-dependent WIMP-proton dark matter interactions. This success is due to the unparalleled capability of bubble chamber detectors to reject radioactive backgrounds and their unique ability to use target nuclei unavailable to other technologies. Despite this success, past runs with PICO detectors have been consistently limited by backgrounds of unknown origin. The primary component of this background is now identified as originating from particulate contamination and was eliminated in the recent science results from the PICO-2L chamber. I will present a summary of these efforts, including calibration studies on the precise nature of this particulate-induced background and progress on the next science run of our primary physics device, PICO-60. Our developing knowledge of these backgrounds enables us not only to mitigate them in PICO-60, which promises to probe spin-dependent dark matter interactions by up to two orders of magnitude beyond PICO’s current leading limits, but also potentially to distinguish them on an event-by-event basis from a dark matter signal.
        Speaker: Daniel Baxter (Northwestern University)
      • 18:30
        Indirect Dark Matter Searches with Super-Kamiokande 2h
        The Super-Kamiokande neutrino detector has performed searches for neutrinos from dark matter annihilation from possible sources of concentration such as the center of the sun, center of the earth, and center and halo of the Milky Way galaxy. The SK detector is sensitive to neutrino energies below 10 GeV, allowing unique sensitivity to low WIMP masses. Updated results on indirect dark matter detection via neutrinos are presented.
        Speaker: Katarzyna Frankiewicz (National Centre for Nuclear Research)
      • 18:30
        Indirect detection of Dark Matter with JUNO 2h
        The existence of non-baryonic Dark Matter (DM) has been very well established by various astronomical observations; and finding out a viable DM candidate is one of the most important open-ended problems in beyond Standard Model physics today. The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton multi-purpose underground liquid scintillator detector with the main objective to determine the neutrino mass hierarchy. It will also provide opportunities to study other important topics in neutrino and astro-particle physics. Here, we try to explore the capabilities of JUNO towards indirect detection of DM. We consider the neutrino flux resulting from DM annihilation inside the Sun. As a benchmark, we consider the channels $\chi\chi\rightarrow\tau^{+}\tau^{-}$ and $\chi\chi\rightarrow\nu\bar\nu$. The sensitivities are calculated based on the excess of neutrino events beyond the atmospheric background. Only the muon events with track lengths greater than 5 m within the detector have been considered. For such events, the direction of muon tracks can be reconstructed with an accuracy better than $1^\circ$. To search for DM induced neutrino events from the Sun, we choose and observation cone with a cone half angle $\psi = 30^{\circ}$. We have found that JUNO sensitivity to spin-dependent scattering cross-section $\sigma^{SD}_{\chi p}$ is much better than the current direct detection constraints. In the case of spin-independent $\sigma^{SI}_{\chi p}$, JUNO is competitive with direct detection experiments for $m_{\chi}<7~\textrm{GeV}$.
        Speaker: Suprabh Prakash (Sun Yat-Sen University, Guangzhou)
      • 18:30
        Inelastic proton cross-section at 13 TeV with ATLAS 2h
        The inelastic cross-section is a basic property of the proton, yet it cannot be calculated from theory. In 1973 experiments at CERN discovered that it rises with energy—as Heisenberg predicted. Today, the LHC sets the energy frontier at 13 TeV, and theory predicts an asymptotic "black-disk" limit. I will present a recent measurement of the inelastic cross-section at 13 TeV with the ATLAS detector, extracted with independent measurements of the rate of inelastic collisions and the LHC luminosity. I will also show the connection of this result with cosmic ray experiments.
        Speaker: Miguel Ignacio Arratia Munoz (University of Cambridge (GB))
      • 18:30
        Inelastic proton cross-section at 13 TeV with ATLAS 2h
        The inelastic cross-section is a basic property of the proton, yet it cannot be calculated from theory. In 1973 experiments at CERN discovered that it rises with energy—as Heisenberg predicted. Today, the LHC sets the energy frontier at 13 TeV, and theory predicts an asymptotic "black-disk" limit. I will present a recent measurement of the inelastic cross-section at 13 TeV with the ATLAS detector, extracted with independent measurements of the rate of inelastic collisions and the LHC luminosity. I will also show the connection of this result with cosmic ray experiments.
        Speaker: Miroslav Myska (Czech Technical University (CZ))
      • 18:30
        Integration of ROOT NoteBook as an ATLAS analysis web-based tool in outreach and public data release projects 2h
        The latest developments in the integration of the ROOT data analysis framework with the Jupyter Notebook technology presents an incredible potential in the enhance and expansion of educational and training programs at any level of education: starting from university students in their early years, passing to new ATLAS PhD students and post doctoral researches, to those senior analysers and professors that want to restart their contact with the analysis of data or to include a more friendly but yet very powerful open source tool in the classroom. Such tools have been already tested in several environments and a fully web-based integration together with Open Access Data repositories brings the possibility to go a step forward in the search of ATLAS for integration between several CERN projects in the field of the education and training, developing new computing solutions on the way.
        Speaker: Arturo Sanchez (Universita degli Studi di Napoli Federico II, Universidad de Los Andes)
      • 18:30
        IR-Improved DGLAP-CS Parton Shower Effects in W+n Jets 2h
        We use recently introduced MC realizations of IR-improved DGLAP-CS parton showers to study the attendant improvement effects in W+n jets at the LHC in the MG5_aMC@NLO framework for the exact ${\cal O}(\alpha_s)$ corrections. We compare our results with the available LHC data and discuss the corresponding phenomenological implications.
        Speaker: Mr Bahram Shakerin (Baylor University)
      • 18:30
        Jinping Neutrino Experiment 2h
        * We will present a preliminary R&D study of a low energy neutrino experiment (arxiv:1602.01733), which is proposed to be at China JinPing Laboratory, a laboratory with the thickest overburden and lowest reactor neutrino background. Based on about 4 kiloton of liquid scintillator or water-based liquid scintillator and the assessments of the site and potential detector designs, we will give the expected discoveries and precision improvements for neutrino physics, astrophysics, and geo-science.      * Jinping has a very strong potential to significantly improve the measurements of neutrinos with a few MeV energy from the interior solar fusion processes, including the components, fluxes and spectra. Jinping can precisely measure the transition phase for the solar neutrinos oscillation from the vacuum to the matter effect, providing a critical test for the Mikheyev-Smirnov-Wolfenstein (MSW) theory in the high density environment. Jinping can also discover solar neutrinos from the carbon-nitrogen-oxygen (CNO) cycle with more than 5 sigma of statistical significance, discovering the energy source for massive stars and shedding light on the metal abundance of the solar core and the homogeneous chemical assumption of the C, N, and O elements. It can also resolve the high and low metallicity hypotheses. * Jinping can carry a precise measurement on geo-neutrinos with an unambiguous separation on U and Th cascade decays from the dominant crustal anti-electron neutrinos. The estimated event rates of 37 U and 9 Th geo-neutrino events/year/kton will be significantly above the expected <6 reactor neutrino events/year/kton. The ratio of U/Th can be determined to 10%. We expect that the measurement from Jinping together with the Borexino and KamLAND results can give an extrapolation of the flux for the desired mantle neutrinos and reveal the mystery of the engine driving Earth's continental growth, mountain movement and distribution of heat producing elements.
        Speaker: Zhe Wang (Tsinghua University)
      • 18:30
        JLab EIC full-acceptance detector 2h
        The Electron Ion Collider (EIC) is planned to be the next large U.S. project for nuclear physics research. It will be the world’s first collider with polarized electron- and light ion beams, and capable of accelerating nuclei up to uranium. In this talk, the Jefferson Lab full-acceptance detector concept will be presented, with physics emphasis on integrated particle identification (PID) system. The detector was designed to detect and identify the complete final state, including all partonic and nuclear fragments. Excellent PID in the central detector is also needed for studying the current-jets, in particular through exclusive- and semi-inclusive processes, which allow for imaging of the 3D structure of the nucleon. It is also important for heavy-flavor.
        Speaker: Greg Kalicy (ODU/JLab)
      • 18:30
        Lab-facility of HEP detectors and related technology for training, development, fabrication, applications and innovation 2h
        In this work we present the process of construction, development, some results and further advances of the “Laboratorio de Detectores” (Detectors Laboratory), of the UAN, as a R&D laboratory for training, development, fabrication, applications and innovation particularly with SiPMs and MPGDs and their related technologies. The goal of this lab- facility is to support the training of PhD students and young researchers in High Energy Physics detectors to increase the critical mass in such important scientific and technological advances, in particular for Latin- America with new capacities for detectors development, fabrication, quality control and characterization in HEP and new applications in other disciplines and social sectors. This lab-facility supports a new PhD program in applied science at the UAN to benefit the radiation detectors community in general and in particular the RD51 program at CERN, and the NEXT experiment at CSIC, with more professionals, students and infrastructure dedicated to the radiation detectors and related technology.
        Speakers: Mr Javier Fernando Castaño Forero (Universidad Antonio Nariño), Mr LUIS FERNANDO CASTAÑEDA MELO (Universidad Antonio Nariño)
      • 18:30
        Lepton number violating signatures with Left-Right Symmetry at LHC through doubly charged scalars 2h
        The Left Right Symmetric Model (LRSM) presents a very promising beyond standard model scenario with a rich scalar sector. The minimal version has additional triplet and bidoublet scalar fields resulting in doubly charged, singly charged and neutral scalar particles in the physical spectrum. The doubly-charged scalars provide a distinct phenomenology compared to many other multi-Higgs models and are capable of producing signatures with both lepton number violation (LNV) and lepton flavor violation (LFV). We investigate the production and further decay of $H^{++}_{L/R}$ at the LHC. With the left handed triplet acquiring a non-zero vev ($\upsilon_{L}$), we consider all the LNV processes in LRSM. Our preliminary studies find that, by suitably adjusting different parameters like $\upsilon_{L}$, Yukawa couplings between triplet scalars and leptons etc. of the model, it is possible to enhance the cross-section of LNV processes keeping them within the reach of high luminosity LHC while satisfying existing constraints on the parameters from neutrino mass and low energy LNV-LFV processes.
        Speaker: Ms Deepanjali Goswami (Indian Institute of Technology Guwahati)
      • 18:30
        Lepton Number Violation in Low Scale Seesaw Mechanism and its Collider Complementarity 2h
        We consider the TeV scale left-right symmetric theory which can accommodate low scale seesaw mechanisms consistent with neutrino oscillation data originally proposed to provide a natural explanation for maximal parity violation of weak interaction. This class of theories permits lepton number violating processes like neutrinoless double beta decay, same-sign dilepton events and candidates for dark matter when the symmetry breaking occurs at few TeV scale. It looks promising since the TeV scale offers a rich phenomenology in context of lepton flavor violation, neutrino mass mechanism and matter-antimatter asymmetry via direct baryogenesis. Since the model accommodates TeV scale $W_R$, $Z_R$ gauge bosons, low scale right-handed neutrinos and scalar triplets, it heightens the possibility of their verification at LHC. The successful embedding of this theory in a non-SUSY $SO(10)$ grand unified theory makes it more appealing.
        Speaker: Mrs Prativa Pritimita (Siksha O Anusandhan University, Bhubaneswar 751030, India)
      • 18:30
        LHCb tracking performance for Run II and prospects for the Upgrade 2h
        The LHCb tracking system consists of a Vertex Locator around the interaction point, a tracking station with four layers of silicon strip detectors in front of the magnet, and three tracking stations, using either straw-tubes or silicon strip detectors, behind the magnet. This system allows to reconstruct charged particles with a high efficiency (typically > 95% for particles with momentum > 5 GeV) and an excellent momentum resolution (0.5% for particles with momentum < 20 GeV). The high momentum resolution results in very narrow mass peaks, leading to a very good signal-to-background ratio in such key channels as $B_s \to \mu^+ \mu^-$. Furthermore an optimal decay time resolution is an essential element in the studies of time dependent CP violation. For Run II a novel reconstruction strategy was adopted, allowing to run the same track reconstruction in the software trigger as offline. This convergence was possible due to a staged approach in the track reconstruction and a large reduction in the processing time, without any loss in the key performance numbers like impact parameter or decay time resolution. Having a unified track reconstruction greatly benefits all physics analyses due to the perfect alignment between their online and offline selection. In this talk, we will give an overview of the track reconstruction in LHCb, review its performance in Run II of the LHC and highlight the challenges and improvements. A similar scheme is planned to be used in the LHCb upgrade foreseen for 2020. At that time LHCb will run at an instantaneous luminosity of $2\times 10^{33} \mathrm{cm}^{-2} \mathrm{s}^{-1}$ with a fully software based trigger with a read-out of the detector at a rate of 40 MHz. A full new tracking system is being developed: a vertex detector based on silicon pixel sensors, a new silicon micro-strip detector with a high granularity and the scintillating fibre tracker. The new tighter time constraint in the trigger, where only about 13 ms are available per event, combined with a higher luminosity by a factor 5 represent a big challenge for the track reconstruction. A new track finding strategy has been considered and new computing approaches, partly based on GPUs, are under study. We will present the new strategy and the new fast track reconstruction, including the performance and the highlights of the improvements with respect to the current tracking system of LHCb.
        Speaker: Adam Davis (University of Cincinnati (US))
      • 18:30
        Light Flavor Physics from Domain Wall Lattice QCD 2h
        Lattice calculations of low energy QCD matrix elements are an important ingredient in precision tests of Standard Model physics. In this talk we will report on some of the RBC-UKQCD collaboration's recent calculations with physical quark masses, relevant to light flavor physics --- including the pion and kaon decay constants, the Kl3 form factors, and the kaon bag parameter --- and their implications for CKM matrix elements. Our domain wall fermion simulations, which preserve the chiral symmetries of continuum QCD on the lattice, also allow for determinations of the low energy constants of chiral perturbation theory. We present low energy constants from fits of our data to both NLO and NNLO SU(2) and SU(3) chiral perturbation theory, discuss the reliability of the chiral expansion, and use the low energy constants we obtain to predict various physical quantities.
        Speaker: David Murphy (Columbia University)
      • 18:30
        Light neutral boson searches with TREK and DarkLight 2h
        Hidden-sector light bosons can provide simultaneous explanations of dark matter and solutions of recent puzzles in particle physics such as the muon anomalous magnetic moment or the proton charge radius. The TREK program at J-PARC, Japan, provides opportunity to search for light bosons in the mass region below 200 MeV/$c^2$ via rare decay of positively charged kaons in several decay modes. A dedicated search for a dark photon below 100 MeV/$c^2$ is being pursued with the DarkLight program at Jefferson Lab, Virginia, USA, using electron scattering from a hydrogen gas target internal to an energy recovery accelerator. A large production data set has been acquired with TREK in 2015, while preparations are ongoing for the initial phase of the DarkLight program in 2016-17. The status of both programs will be presented.
        Speaker: Michael Kohl (Hampton University)
      • 18:30
        Manifestations of BFKL evolution at high energies 2h
        A brief overview of searches for manifestations of BFKL-evolution, a high-energy QCD asymptotics, at high energies is presented. Comparison of the data from Tevatron, LEP2 and LHC with the predictions of BFKL-evolution in the leading logarithmic (LL) and next-to-leading logarithmic (NLL) approximations are discussed.
        Speaker: Victor Kim (St. Petersburg Nuclear Physics Institute - PNPI, Gatchina)
      • 18:30
        Maximizing Magnetic Field Uniformity in the 1.45-Tesla Muon g-2 Storage Ring 2h
        The Muon $g-2$ experiment at Fermilab will measure the muon’s anomalous magnetic moment, $a_{\mu}$, to 140 parts-per-billion. Modern calculations for $a_{\mu}$ differ from the current experimental value by 3.6$\sigma$. Our effort will test this discrepancy by collecting 20 times more muons and implementing several upgrades to the well-established storage ring technique. The experiment stores $\approx 10^{4}$ muons at a time in a 7-meter-radius superconducting electromagnet with a highly uniform 1.45-Tesla magnetic field. In this poster I will summarize the magnetic field uniformity requirements needed to achieve our precision goals for the determination of $a_{\mu}$. The commissioning of the magnet and the nuclear magnetic resonance probes used to measure the magnetic field will be described. I will detail the procedure utilized to both measure and maximize the uniformity of the magnetic field, and report on the current status of the magnet.
        Speaker: Brendan Kiburg (Fermilab)
      • 18:30
        Measurement of ATLAS track reconstruction inefficiency in dense jet environments using dE/dx 2h
        Reconstruction of charged particles in dense environments is paramount for a number of applications including jet energy and mass calibration, jet flavour tagging, and the reconstruction of hadronic decays from high momentum taus. With the center of mass energy increase for Run 2 of the LHC, all of these are of special importance, for example in the reconstruction of high transverse momentum objects from potential heavy resonances. In these environments, it is not uncommon for multiple particles to deposit energy in the same or nearby pixels in the ATLAS pixel detector, which results in a single merged cluster during track reconstruction. Methods to identify such merged measurements are implemented in the ATLAS software, but a residual inefficiency in reconstructing nearby tracks remains, resulting in lost tracks. In this poster, a fully data driven method to determine this remaining inefficiency is presented. The method uses the ionization loss per unit length (dE/dx) in the silicon sensors to determine the fraction of lost tracks. Results using 13 TeV proton-proton collision data collected at the LHC in 2015 are shown and compared to Monte Carlo simulation. The fraction of lost tracks in data is determined to range from 1.0% to 3.6% for 200-1600 GeV jets with simulation agreeing within 40%.
        Speaker: Emily Marie Duffield (Lawrence Berkeley National Lab. (US))
      • 18:30
        Measurement of b-jet efficiency for high pT jets in ATLAS with di-jet events 2h
        The identification of jets originating from b quarks (b-tagging) is a crucial tool for many physics analyses at the LHC. It is especially important for measurements involving top quarks, in searches for new physics, and in Standard Model and beyond the Standard Model Higgs boson searches. The b-tagging algorithms need to be calibrated in data to account for possible differences between data and simulation. Current calibration techniques used in ATLAS only reach approximately 300 GeV in jet transverse momentum. We present a new technique to calibrate the efficiency of b-tagging algorithms at high pT in di-jet events, which is based on template fits, extending the calibration to jets with pT up to 1200 GeV. Jets based on the energy deposits reconstructed in the calorimeter are calibrated, as well as jets formed by tracks reconstructed in the inner tracking detector. Calibration results for both types of jets are presented in the form of pT-dependent data-to-MC scale factors.
        Speaker: Anna Shcherbakova (Stockholm University (SE))
      • 18:30
        Measurement of c-jet tagging efficiency in ATLAS with W+c-jet events 2h
        The correct identication of the jet quark flavour (flavour tagging) is of fundamental importance for hadron collider experiments, such as ATLAS and CMS at the Large Hadron Collider. In particular, it is an important tool for many physics analyses with heavy flavour jets in the final state (b-quarks from top quark decays, H to bb decays and new physics searches). The ATLAS experiment developed a new flavour tagging algorithm for Run II: in this contribution, the measurement of its tagging efficiency performed on a c-jet enriched sample will be presented, using 13 TeV data collected by ATLAS during 2015. A high purity c-jet sample has been selected by reconstructing W+c-jet events, with the W boson reconstructed via its decay into an electron and a neutrino and the c-jet identified via a soft muon stemming from a semileptonic c-hadron decay, exploiting the charge correlation between the electron and the muon.
        Speaker: Alessandro Lapertosa (Universita e INFN Genova (IT))
      • 18:30
        Measurement of Electron Transport Properties in Liquid Argon 2h
        The fundamental properties of LAr are of particular interests for experimentalists as LArTPCs are now the preferred technology for many accelerator neutrinos and dark matter experiments. The electron longitudinal diffusion coefficients in Liquid Argon (LAr) are measured for electric fields range from 0.1-2.0 kV/cm at different drift distances up to 25 cm using the two experimental setup with 2-Liter and 20-Liter volume of LAr at BNL. The measurement principle, apparatus, and data analysis are described. Our result represents the world's best measurement of electron longitudinal coefficients in this range. The measured longitudinal diffusion results are directly applicable to the existing experiments such as MicroBooNE and are essential for the future LAr based experiment detector design such as SBN and DUNE. We also report the performance of the gas purification system, which is important for the design of the purification system of future large LArTPCs.
        Speaker: Yichen Li (Brookhaven National Laboratory)
      • 18:30
        Measurement of Normalized Differential Cross Section for the $t\bar{t}$ Production in the Dilepton Channel in pp Collisions at $\sqrt{s}$=13 TeV 2h
        Differential cross sections of top-quark pair production are measured in the dilepton decay channel with proton-proton collisions at a center-of-mass energy of 13 TeV. The measurement is performed with Run II data using the CMS detector at the Large Hadron Collider. In this analysis, we measure the differential cross sections with respect to the kinematic variables of leptons, bjets, and top-quarks at particle level.
        Speaker: Youn Jung Roh (Korea University (KR))
      • 18:30
        Measurement of the $B^0_s$ lifetime in the CP-odd decay channel $B^0_s\to J/\psi f_0(980)$ in the D0 experiment 2h
        The lifetime of the $B^0_s$ meson is measured in the decay channel $B^0_s\to J/\psi \pi^+\pi^-$ with $|M_{ \pi^+\pi^-} -980|<100\, $MeV, which is mainly CP-odd and dominated by the $f_0(980)$ resonance. Usnig $10.4\ \rm fb^{−1}$ of data collected with the D0 detector in Run II of the Tevatron, the lifetime of the $B^0_s$ meson is measured to be $\tau(B^0_s) = (1.696 \pm 0.141\, {\rm(stat)}\, \pm 0.049\, {\rm(syst)}) \,$ps. Neglecting CP violation in $B^0_s/\bar B^0_s$ mixing, the measurement can be translated into the width of the heavy mass eigenstate of the $B^0_s$, $\Gamma_H =( 0.590 \pm 0.049\,{\rm (stat)}\, \pm0.017 \, {\rm(syst)})\,\rm ps^{−1}$.
        Speaker: Michel Hernandez Villanueva (Cinvestav)
      • 18:30
        Measurement of the double-Beta decay half-life and search for the neutrinoless double-beta decay of Ca-48 with the NEMO-3 Detector 2h
        The NEMO-3 detector, which had been operating in the Modane Underground Laboratory from 2003 to 2010, was designed to search for neutrinoless double-β (0νββ) decay. We report the final results of a search for 0νββ decays with 6.914 kg of Mo100 using the entire NEMO-3 data set with a detector live time of 4.96 yr, which corresponds to an exposure of 34.3  kg⋅yr. We perform a detailed study of the expected background in the 0νββ signal region and find no evidence of 0νββ decays in the data. The level of observed background in the 0νββ signal region [2.8–3.2] MeV is 0.44±0.13  counts/yr/kg, and no events are observed in the interval [3.2–10] MeV. We therefore derive a lower limit on the half-life of 0νββ decays in Mo100 of T1/2(0νββ)>1.1×1024  yr at the 90% confidence level, under the hypothesis of decay kinematics similar to that for light Majorana neutrino exchange. Depending on the model used for calculating nuclear matrix elements, the limit for the effective Majorana neutrino mass lies in the range ⟨mν⟩<0.33–0.62  eV. We also report constraints on other lepton-number violating mechanisms for 0νββ decays.
        Speaker: Cristovao Vilela (Stony Brook University)
      • 18:30
        Measurement of the Jet Mass Scale and Resolution for Large Radius Jets at sqrt(s) = 8 TeV using the ATLAS Detector 2h
        A measurement of the jet mass scale and jet mass resolution uncertainty for large radius jets using the full sqrt(s) = 8 TeV dataset from the ATLAS experiment is presented. Large radius jets are calibrated so that on average the reconstructed jet transverse momentum is the same as the corresponding particle­level jet transverse momentum in simulation. The ratio of the reconstructed jet mass to the particle­level jet mass is the jet mass response. The mean response is the jet mass scale and the standard deviation of the jet mass response distribution is the jet mass resolution. In this study the uncertainty on these quantities is measured by tting the W boson resonant peak in the large radius jet mass spectrum from lepton plus jets tt events in both data and Monte Carlo. Large radius jets with pT > 200 GeV and |η_jj| < 2:0 are used. Two different fitting procedures are used and give comparable results. For the more precise method, the ratio between the data and the Monte Carlo simulation is 1.001±0.003(stat)± 0.024(syst) for the jet mass scale and 0.96± 0:05(stat) ±0.10(syst) for the jet mass resolution.
        Speaker: Ruchika Nayyar (University of Arizona (US))
      • 18:30
        Measurement of the top quark-antiquark spin correlations at 13 TeV using the CMS detector 2h
        Measurements of the correlation of the spins of the top quark and top antiquark for top quark-antiquark pairs in pp collisions are discussed. Spin correlations are sensitive to a variety of new physics contributions and could be enhanced compared to the standard model expectation. Dilepton final states are employed to measure angular distributions in data accumulated with the CMS detector at a center-of-mass energy of 13 TeV. The angular distributions of the leptons are unfolded to the parton level and used to extract the spin correlation coefficient. Results are compared to the standard model prediction to study potential new physics contributions.
        Speaker: Samuel Lloyd Higginbotham (Purdue University (US))
      • 18:30
        Measurement of the two neutrino double beta decay half-life and a search for neutrinoless double beta decay of $^{82}$Se with the NEMO-3 experiment 2h
        The world's most precise measurement of the double beta decay half-life of $^{82}$Se is presented. This measurement was made using a 932 g sample with the total exposure of the NEMO-3 data (5.25 yrs). In addition, a search for neutrinoless double beta decay in the same isotope has been conducted and no evidence for a signal has been observed. The resulting half-life limits for different decay modes, including neutrino mass mechanism, right-handed current and Majoron emission modes, are detailed.
        Speaker: James Mott (Boston University)
      • 18:30
        Measurement of theta13 using RENO reactor neutrino events with neutron capture on hydrogen 2h
        RENO has been taking data since August, 2011 and successfully measured the smallest neutrino mixing angle, theta13. This measurement was based on observed reactor neutrino events with neutron captures on gadolinium (n-Gd) in the target detector region. RENO also successfully measures the mixing angle from a reactor neutrino sample with neutron captures on hydrogen (n-H) in the gamma-catcher region. Due to a large accidental background in the n-H data sample, the analysis requires additional reduction of backgrounds . This independent measurement provides a valuable systematic cross-check of the theta13 measurement using the n-Gd sample. In this talk, we present the results from the n-H analysis using the 500 days of data sample.
        Speaker: Mr ChangDong Shin (RENO collaboration, Chonnam National University)
      • 18:30
        Measurement of σ(ttbarbbbar)/σ(ttbarjj) at s = 13 TeV at CMS experiment 2h
        We present the measurement of the cross section ratio σ(ttbarbbbar)/σ(ttbarjj) in the lepton plus jets and the dilepton decay mode, using a data sample collected in pp collisions at s = 13 TeV with the CMS detector at the LHC. The cross section ratio σ(ttbarbbbar)/σ(ttbarjj) is measured in the visible phase space corresponding to the detector acceptance, and corrected to particle level. In the events with at least six reconstructed jets for the lepton plus jets decay mode and at least four jets for the dilepton decay mode, the measurements are performed by means of a fit to the measured b-tagging algorithm output.
        Speaker: Young-Kwon Jo (Korea University (KR))
      • 18:30
        Measurements of the differential cross section of W boson produced in association with jets with the CMS detector at the LHC 2h

        The measurement of the differential cross-sections for a W (-> mu nu)
        boson produced in association with jets is presented using 8 TeV
        proton-proton collisions data recorded by the CMS detector at the LHC,
        corresponds to an integrated luminosity of 19.6 fb-1. The differential
        cross sections are measured as a function of jet multiplicity, the jet
        pT and pseudorapidity, total hadronic activity HT for different jet
        multiplicities and several angular correlation distributions among
        jets and the muon. The cross section measurements are then compared
        with the predictions from LO and NLO generators, and from NLO and
        NNLO theoretical predictions.

        Speaker: Bhawandeep Bhawandeep (Panjab University (IN))
      • 18:30
        Measurements of The Neutrino Flux Using the the DUNE-ND 2h
        The reference design of the near detector for the LBNE/F experiment is a high-resolution Fine-Grained Tracker (FGT) capable of precisely measuring all four species of neutrinos: νμ, νe, ν ̄μ and ν ̄e. The goal of the FGT is to constrain the systematic errors, below the corresponding statistical error in the far detector, for all oscillation studies; and to conduct a wide range of precision measurements and searches in neutrino physics. We present sensitivity studies of the measurements – critical to constraining the systematics in oscillation searches – of the absolute and relative neutrino flux using the various techniques: (1) neutrino electron neutral current scattering (CC), (2) neutrino electron charge-current scattering (CC), (3) ν ̄μ proton QE scattering, (4) Coherent ρ production for absolute flux and (4) Low-ν method for relative flux. Historically, the limited knowledge of the (anti)-neutrino fluxes has been the dominant systematic uncertainty for past neutrino scattering experiments. The precision in the determination of the absolute and relative fluxes achieved in DUNE-ND will allow for the first time to fully exploit the potential of the (anti)-neutrino probe.
        Speaker: Bing Guo (University of South Carolina)
      • 18:30
        Measuring the trilinear couplings of MSSM neutral Higgs bosons in the light of the discovery of a Higgs boson 2h

        We consider the measurement of the trilinear couplings
        of the neutral Higgs bosons in the Minimal Supersymmetric
        Standard Model (MSSM) at a high energy $e^+ e^-$ linear
        collider in the light of the discovery of a Higgs
        boson at the CERN Large Hadron Collider~(LHC). We identify the state
        observed at the LHC with the lightest Higgs boson ($h^0$) of the MSSM,
        and impose the constraints following from this identification, as well
        as other experimental constraints on the MSSM parameter space. In order
        to measure trilinear neutral Higgs couplings, we consider different
        processes where the heavier Higgs boson ($H^0$) of the MSSM is produced
        in electron-positron collisions, which subsequently decays into a pair of
        lighter Higgs boson. We identify the regions of the MSSM parameter space
        where it may be possible to measure the trilinear couplings of the Higgs
        boson at
        a future electron positron collider.

        Speaker: Charanjit Kaur (Indian Institute of Science, Bangalore)
      • 18:30
        Minkowski space approch to the relativistic bound state spectrum 2h
        The Nakanishi integral representation of the Bethe-Salpeter amplitude is used in order to derive a workable framework for bound states, solutions of the homogeneous Bethe-Salpeter Equation, in Minkowski space. The projection onto the null-plane of the homogeneous Bethe-Salpeter Equation is used to derive an equation for the Nakanishi weight function for bound states. We study the bound state of two spinless bosons with the interaction given by the exchange of scalar bosons in the ladder plus cross-ladder approximation, which is used to obtain the spectrum and the three-dimensional structure of the bound states. The unique feature of the method is to access the valence light-front wave function, which are explored in detail for the ground and excited states. The valence momentum distribution amplitude and the impact parameter space representation of the valence state are calculated. Resorting to the analytic structure of the Nakanishi integral representation for the valence wave function, we analysed the equality between the transverse momentum amplitudes computed within Minkowski and Euclidean frameworks. The leading exponential fall-off of the valence wave function in the impact parameter space wave function is derived, which could be of particular interest for studies to hadron structure investigations.
        Speaker: Vitor Gigante (ITA)
      • 18:30
        Modeling of top-pair productionin association with SM bosons or Heavy Quark pairs 2h

        Production of top quark pairs in association with heavy Standard Model bosons or with heavy flavor quark-pairs is important both as a signal and a background in several ATLAS analyses. Strong constraints on such processes cannot at present be obtained from data, and therefore their modelling by Monte Carlo simulation as well as the associated uncertainties are important. This poster documents the Monte Carlo samples currently being used in ATLAS for the ttbarH and ttbarV (V=W,Z vector bosons) and tt+bottom and charm quark pairs processes for sqrt(s)=13
        TeV proton-proton collisions.

        Speaker: Maria Moreno Llacer (Georg-August-Universitaet Goettingen (DE))
      • 18:30
        Multiple angles on the sterile neutrino - combining data from Planck and MINOS 2h

        The possible existence of sterile neutrinos is an important unresolved question for both particle physics and cosmology. Data sensitive to a sterile neutrino is coming from both particle physics experiments and from astrophysical measurements of the Cosmic Microwave Background. In this study, we address the question whether these two contrasting data sets provide complementary information about sterile neutrinos. We focus on the muon-disappearance oscillation channel, taking data from the MINOS and Planck experiments, converting the limits into particle physics and cosmological parameter spaces, to illustrate the different regions of parameter space where the data sets have the best sensitivity. For the first time, we combine the data sets into a single analysis to illustrate how the limits on the parameters of the sterile-neutrino model are strengthened. Finally, we investigate how data from future accelerator neutrino experiments will be able to further constrain this picture.

        Speaker: Stefan Soldner-Rembold (University of Manchester (GB))
      • 18:30
        Neutrino Identification with a Convolutional Neural Network in the NOvA Detectors 2h
        The observation of neutrino oscillation provides evidence of physics beyond the standard model, and the precise measurement of those oscillations remains an important goal for the field of particle physics. NOνA will soon be one of the foremost experiments in that field. Taking advantage of a two-detector technique, a tightly focused off-axis view of the NuMI neutrino beam, and a pair of finely instrumented liquid scintillator detectors, NOνA is in a prime position to contribute to precision measurements of the neutrino mass splitting, mass hierarchy, and CP violation. A key part of that precise measurement is the accurate characterization of neutrino interactions in our detector. This presentation will describe a convolutional neural network based approach to neutrino interaction type identification in the NOvA detectors. The Convolutional Adaptive Learned Visual Intelligence Network (CALVIN) algorithm is an innovative and powerful new approach to event identification which uses the technology of convolutional neural networks, developed in the computer vision community, to identify events in the detector without requiring detailed reconstruction. We will discuss the core concept of convolutional neural networks, modern innovations in convolutional neural network architecture related to the nascent field of deep learning, and the performance of our own novel network architecture in event selection for the NOvA oscillation analyses.
        Speaker: Alexander Radovic (College of William and Mary)
      • 18:30
        Neutrino Induced Neutral Current Coherent $\pi^0$ Production in The NOvA Near Detector 2h

        The NOvA experiment is a long-baseline neutrino oscillation experiment designed to measure the rate of electron neutrinos appearance in a muon neutrino beam. It consists of two finely segmented, liquid scintillator detectors at 14 mrad off-axis in the NuMI beam. The NOvA Near Detector, located at Fermilab, provides an excellent opportunity to study neutrino-nucleus interactions which are important for neutrino oscillation measurements. This presentation will present one of the first such measurements from NOvA: neutrino-induced coherent-$\pi^0$ production. Neutrinos can coherently interact with the target nucleus via neutral current exchange and produce a single, forward $\pi^0$, which makes background to the $\nu_e$ appearance measurement. The analysis measures the coherent-$\pi^0$ kinematics and cross-section and compares to model predictions, and also provides a data constraint on $\pi^0$ production in the neutral current resonance and deep-inelastic interaction.

        Speaker: Hongyue Duyang (University of South Carolina)
      • 18:30
        Neutrino Oscillation Physics Potential of A Possible Extension of The T2K Experiment 2h
        T2K (Tokai to Kamioka) is the world's first off-axis designed long-baseline experiment that was built for precision measurements of neutrino oscillations. The T2K experiment uses a high intensity, highly-pure beam of muon (anti)neutrinos produced at J-PARC in Tokai, Japan. A Near Detector complex, 280 m downstream of the target, is operated to monitor and characterize the (anti)neutrino beam before the neutrinos oscillate. Neutrino oscillation patterns are observed at the Super-Kamiokande detector, which is located 295 km away from the neutrino production point at an angular offset of 2.5 degrees from the average beam direction. In 2013, with just 8.4% of the total approved proton exposure ($7.8 \times 10^{21}$ protons-on-target (POT)), $\nu_{\mu} \rightarrow \nu_e$ appearance, a primary goal of T2K, was discovered with $7.3\sigma$ significance. This result leads us to re-evaluate the physics potential and possibility for extension of the T2K experiment. In this report, T2K neutrino oscillation sensitivities are studied with a total exposure of $ 30 \times 10^{21} $ POT, which can be achieved with a possible upgrade of the J-PARC beam power and T2K hardware, as well as improvements in analysis. These studies will focus on T2K's ability to constrain neutrino oscillation parameters, especially on the search for CP violation and determination of the mass hierarchy.
        Speaker: Son Cao (T)
      • 18:30
        Neutrinoless double-beta decay search with CMOS pixel charge plane in gainless TPC 2h
        High pressure gaseous Time Projection Chamber (TPC) provides a unique combination of excellent energy resolution, event tracking for background discrimination, and scalability, which are ideal for neutrinoless double-beta decay searches. To harness the power of such a TPC, a suitable charge readout scheme has to be realized. We are developing a pixelated charge readout plane filled with an array of CMOS sensors. Each CMOS sensor has an exposed metal patch for direct charge collection, and integrates charge sensitive amplifiers as well as signal processing and digitization/transmission circuitry. The electronic noise is suppressed to a point that no additional electron-gas avalanche gain is necessary. It provides competitive energy resolution while improves on tracking capability, stability, complexity and scalability compared to alternative readout schemes. Moreover, ions drifting in the gas can be read directly since the otherwise prohibitive avalanche gain is unnecessary. It enables the use of alternative gases and double-beta decay candidate isotopes such as $^{82}$SeF$_6$ gas, in which only ion drifting is possible. With moderate modifications, such a readout plane could be used in liquid noble gas and organic liquid TPCs for other applications such as long baseline / reactor neutrino detection.
        Speaker: Yuan MEI (Lawrence Berkeley National Lab)
      • 18:30
        New improvements to a specialized Multi-Pixel Photon Counter (MPPC) for neutrinoless double-beta decay and dark matter search experiments 2h
        Hamamatsu Photonics K. K., a major manufacturer of a wide variety of silicon photodetectors including the Multi-Pixel Photon Counter (MPPC), has developed MPPCs that are capable of detecting light down to 120 nm, covering scintillation wavelengths of liquid xenon and argon. Following the development efforts that we outlined in our presentation at TAUP 2015, we will provide an update on the results of those efforts, including enhancement of our cryogenically-compatible ultralow-RI packaging options. Furthermore, we will introduce a 4th generation of our specialized MPPC for cryogenic physics experiments. In addition to diminished after-pulsing and inter-pixel trenches to suppress optical cross-talk, we’ve achieved increased VUV photosensitivity in this new MPPC through new modifications of the device structure. By achieving these results and continuing our MPPC improvements, including the ongoing development of a novel anti-reflection layer for incident VUV light, we hope to make a valuable contribution to the physics community’s efforts towards discovery of dark matter and the neutrinoless double-beta decay.
        Speaker: Ardavan Ghassemi (Hamamatsu Photonics USA)
      • 18:30
        New QCD physics from the LHeC and FCC-he 2h
        Energy-frontier deep inelastic scattering at 1000 times higher luminosity than HERA is considered with the LHeC and further the FCC-he. These collider configurations provide steps in the kinematic range, characterised by the 4-momentum squared $Q^2$ and Bjorken-$x$, which are so huge that qualitatively new phenomena are expected to appear and much more thorough and precise measurements can be pursued than was possible with HERA. Specifically, we will show recent results on the determination of proton PDFs with complete flavour decomposition and of the value of the strong coupling constant with per mille accuracy. The implications of such measurements on Higgs physics and on high mass BSM searches at the HL-LHC will be discussed. New QCD physics is predicted to occur at small $x$ which will be illustrated through several unique possibilities for discriminating standard DGLAP approaches from resummation and gluon saturation scenarios. The LHeC has also an outstanding potential for new physics in diffraction and for analysing the 3D proton structure through measurements of generalised parton distributions.
        Speakers: Christian Schwanenberger (Deutsches Elektronen-Synchrotron (DE)), Max Klein (University of Liverpool (GB))
      • 18:30
        Non-Standard Neutrino Interactions in IceCube 2h
        The IceCube detector is the world's largest neutrino observatory, a cubic kilometer of deep ice at the South Pole outfitted with an array of pressure vessels containing photomultipliers and associated electronics. The IceCube Collaboration has recently reported a measurement of muon neutrino disappearance using the more densely instrumented subdetector DeepCore that is competitive with other leading measurements of neutrino oscillations. The SuperKamiokande experiment has shown the potential large atmospheric neutrino datasets offer to measure new physics in the oscillations region by looking for neutrino non-standard interactions (NSI), where neutrinos interact in the earth mediated by TeV scale bosons predicted in physics beyond the standard model. An analysis of the sensitivity for neutrino NSI in the IceCube detector using the dataset from the recently published oscillations result will be discussed.
        Speaker: Melanie Day (IceCube)
      • 18:30
        Novel Two-Dimensional Floating Strip Micromegas Detectors 2h
        Floating strip Micromegas detectors with one-dimensional readout are high-rate capable particle detectors with excellent spatial and temporal resolution, allowing single particle tracking for particle fluxes up to 7\,MHz/cm$^2$. A floating strip Micromegas detector collects the amplified ionization charge on copper anode strips on high voltage, so called floating strips. The charge signal is read out by capacitive coupling to readout strips, separated by a thin layer of insulating FR4 material. This scheme strongly suppresses the sensitivity of the detector to discharges between the micro-mesh and the floating anode strips, triggered by strongly ionizing particles. A two-dimensional readout has been realized with two layers of readout strips, parallel and perpendicular to the floating strips. The localized ionization charge on the floating strips couples differently to the two readout layers. Thus the measured strip pulse duration on the perpendicular readout strips is considerably shorter, significantly improving the time resolution in this layer. We present results from characterization measurements using a 20\,MeV proton beam. Charge signals were recorded with APV25 frontend boards, allowing for single strip readout with pulse height and timing information. To investigate hardware multiplexing schemes, advantageous for large area detector systems, we have interconnected groups of readout strips to single electronics channels, studying the signal pulse height. Additionally inclined detectors allowed for testing \textmu TPC reconstruction in both readout layers. We also report on new designs of the two-dimensional floating strip anode, where readout strip widths and geometric location of both readout layers within the PCB have been varied, and its tests with 5.9\,keV X-rays emitted by a Fe$^{55}$ source.
        Speaker: Felix Klitzner (Ludwig-Maximilians-Universitaet Muenchen)
      • 18:30
        Nucleon Decay and Atmospheric Neutrino Reconstruction in DUNE 2h
        Despite the enormous success of the Standard Model explaining many experimental results, it sheds no light on the unification of the strong and electroweak forces. Different attempts at unifying these forces into a single larger group have been made in Grand Unified Theories (GUT). In most GUTs, the proton is not a stable particle and the predicted lifetime is within reach of kiloton-scale experiments located deep underground with a low background rate. Two main modes characterize two groups of GUTs: decays to a positron and a neutral pions usually have the highest branching fraction for non-supersymmetric GUTs while decays to K+ and an anti-neutrino are usually dominant when supersymmetry is present. Liquid Argon Time Projection Chambers (LArTPC) experiments are capable of tracking the kaon and measuring its momentum very precisely, in contrast to water Cherenkov detectors where the kaon is below Cherenkov threshold. The Deep Underground Neutrino Experiment (DUNE) far detector, a 40-kton LArTPC located deep underground in the Sanford Underground Research Facility, will be capable of reconstructing nucleon decay events with high efficiency and low background rate due to its location. We will present the current efforts of reconstruction of nucleon decay events and atmospheric neutrino events in the DUNE far detector, concentrating, for nucleon decay, on the modes with a kaon in the final state where DUNE can possibly make an observation based on a single event.
        Speaker: Gabriel Santucci (Stonybrook)
      • 18:30
        Numerical analysis of SO(10) models with flavour symmetries 2h
        We consider a supersymmetric $SO(10)$ Grand Unified Theory (GUT) in which the fermion masses are generated by renormalizable Yukawa couplings. Consequently, the scalar multiplets under consideration belong to the irreps $\mathbf{10}$, $\overline{\mathbf{126}}$, and $\mathbf{120}$ of $SO(10)$. We perform a complete investigation of the possibilities of imposing flavour symmetries in this scenario; the purpose is to reduce the number of Yukawa coupling constants in order to identify potentially predictive models. We have found that there are 14 inequivalent cases of Yukawa coupling matrices, out of which 13 cases pertain to one-generator Abelian groups and only one case has a two-generator symmetry group. Supersymmetry enters through the numerical examination of those cases, in which we have used the charged-fermion masses evaluated at the GUT scale through renormalization-group running in the context of the Minimal Supersymmetric Standard Model. However, the numerical analysis rules out almost all the cases, leaving only a few viable ones which are compatible with the data on the fermion masses and mixings. In order to test the viability of each case and to find adequate numerical values for its parameters, we construct a minimization function $\chi^2$ which relates experimental data with the observables (masses and mixing parameters) to be fitted. The minimization of $\chi^2$ is a difficult task because (a) parameters differ by several orders of magnitude, and (b) the number of local minima is always large. For the numerical minimization we have employed the Differential Evolution algorithm. This is a stochastic algorithm that exploits a population of potential solutions in order to effectively probe the parameter space. By modifying uncertainties in the $\chi^2$ function and diversely restricting parameter space we have been able to test more local minima for each case, and to find the minima closer to the global minimum.
        Speaker: Darius Jurciukonis (Vilnius University (LT))
      • 18:30
        Observation and measurement of W emission collinear to high transverse momentum jets with the ATLAS detector 2h
        This talk presents the observation and differential measurement of collinear W emission from jets with high transverse momentum using the ATLAS detector from pp collisions at a center-of-mass energy of 8 TeV. The measurement is performed in the muon decay channel and the cross-section is reported as a function of the distance between the muon and the closest jet, since a notable signature of this process is a W close to an energetic jet. This particular topology, made accessible by the high energies and large data sample of the LHC, has never been explicitly studied before and provides a test of theoretical QCD and electroweak models. The measured differential cross-section is compared with both multi-leg (Sherpa and Alpgen) and LO with weak showering (Pythia 8) calculations. Understanding this process is also relevant for searches for new physics that involves boosted tops, where collinear W emission may be an important background as they share a similar final state.
        Speaker: Miles Wu (University of Chicago (US))
      • 18:30
        Octant Degeneracy, Quadrant of CPV phase at Long Baseline experiments and Baryogenesis 2h
        In a recent work, we have studied, how CP violation discovery potential can be improved at long baseline neutrino experiments (LBNE/DUNE), by combining with its ND (near detector) and reactor experiments. In this work, we discuss how this study can be further analysed to resolve entanglement of the quadrant of CPV phase and Octant of atmospheric mixing angle θ23, at LBNEs. The study is done for both NH (Normal hierarchy) and IH (Inverted hierarchy). We further show how leptogenesis can enhance the effect of resolving this entanglement. A detailed analytic and numerical study of baryogenesis through leptogenesis is performed in this framework in a model independent way. We then compare our results of the baryon to photon ratio of the present day Universe with the current observational data of the baryon asymmetry, and elucidate how this can be used to pinpoint the Quadrant of leptonic CPV phase.
        Speaker: Dr Kalpana Bora (Gauhati University, Assam, INDIA)
      • 18:30
        Offline Data Processing Software for the JUNO Experiment 2h
        on behalf of JUNO collaboration JUNO is a multi-purpose neutrino experiment mainly designed to determine neutrino mass hierarchy and precisely measure oscillation parameters. Its offline data processing is based on a newly developed framework, SNiPER, which provides flexible event management, efficient event execution controlling, user-friendly interfaces and so on. The design and implementation of SNiPER takes parallel computing into account and we currently focus on its parallelization. The event data model of JUNO is based on the TObject of ROOT. To meet special requirements of offline data processing of the neutrino experiment, a new type of smart pointer, SmartRef, is developed for event data referencing. SmartRef uses the Universally Unique Identifier to handle the references of event data objects, both in memory and in ROOT files. The Input/Output system supports the lazy-loading of event objects when reading data from ROOT files. So far,the JUNO offline data processing software has been successfully used for the optimization of detector’s performance as well as studies of event reconstruction and physics performance.
        Speakers: Jiaheng Zou (IHEP), Weidong Li (Weidong Li), Xing-Tao Huang (Shandong University (CN))
      • 18:30
        otsdaq for Test Beam Infrastructure 2h
        The Real-time Systems Engineering Department of the Scientific Computing Division at the Fermi National Accelerator Laboratory is in the process of integrating the instrumentation of the Fermilab Test Beam Facility into a common framework. Using *otsdaq* (Off-the-Shelf Data Acquisition System), a highly-scalable flexible data acquisition system, facility instrumentation, (such as scintillator coincidence logic, wire chambers, cherenkov detectors and the precision silicon tracking telescopes) could be connected using an Internet of Things style architecture united by the software framework provided by *otsdaq*. An open source library of configurable firmware blocks are provided as part of *otsdaq* to facilitate development with hardware, and the library can be contributed to by the *otsdaq* user community. *otsdaq* offers a platform-independent graphical user interface implemented with HTML5 and JavaScript which can be simultaneously accessed by multiple users through a web browser on any device. User interfaces for *otsdaq* are built on top of XDAQ, a generic data acquisition framework developed for the CMS experiment, and the data transfer and online analysis are based on *artdaq*, a data acquisition toolkit developed at Fermilab. This paper will discuss results from the initial integration of *otsdaq* into the Fermilab Test Beam Facility highlighting the flexibility and scalability of *otsdaq*.
        Speaker: Preston Hansen (Fermi National Accelerator Laboratory)
      • 18:30
        otsdaq for Users at the Fermilab Test Beam Facility 2h
        The Real-time Systems Engineering Department of the Scientific Computing Division at the Fermi National Accelerator Laboratory is participating in a test beam run for the CMS phase II upgrade at the Fermi Test Beam Facility. The goal of the test beam run is to allow different CMS sub-detectors to use the same test beam facility precision tracking and data acquisition infrastructure, which is enabled by *otsdaq* (Off-the-Shelf Data Acquisition System). *otsdaq* is a highly scalable, flexible data acquisition system that the Scientific Computing Division is developing for a wide range of experiments and test beam studies. The system is based on XDAQ, a generic data acquisition framework developed for the CMS experiment (for the user interface), and *artdaq*, a data acquisition toolkit developed at Fermilab (for the data handling). The web-based *otsdaq* graphical user interface is built using HTML5 and JavaScript. The web interface allows users to run the system from any platform and device through a web browser. The newly-developed system will serve as a common framework at the test beam for CMS Phase II sub-detectors such as the Outer Tracker, the Forward Pixels, and the High Granularity Calorimeter. This paper will discuss the results from the project, highlighting the computing and data handling ability of the *otsdaq* system.
        Speaker: Sijia Wu (Fermi National Accelerator Laboratory)
      • 18:30
        Overview of the Compact Muon Solenoid Phase 1 Forward Pixel Upgrade 2h
        During Run II of the LHC, the instantaneous luminosity will increase to near 2.5×10E34 cm−2 s−1. This increase in luminosity will create a high-pileup environment with a large charged particle flux near the interaction point. Operating in such challenging conditions requires high-efficiency tracking and vertexing in order to maintain the physics performance of Run I. The phase 1 pixel upgrade will meet these challenges by incorporating new digital readout chips and front-end electronics for higher data rates, DC-DC powering, and dual-phase CO2 cooling, which will achieve performance exceeding that of the present detector with a lower material budget. The upgraded detector will be installed during the extended technical stop between 2016 and 2017, and it will increase the number of barrel layers from 3 to 4 and the number of forward disks from 2 to 3. The design of the new forward detector will be presented along with status of system tests, module assembly, and module qualification.
        Speaker: Irving Daniel Sandoval Gonzalez (University of Illinois at Chicago (US))
      • 18:30
        Performance and calibration of b-tagging with the ATLAS experiment at LHC Run-2 2h
        The identification of b-flavoured jets is key to many physics analyses at the LHC, including measurements involving Higgs bosons or top quarks, and searches for physics beyond the Standard Model. The capacity of ATLAS to efficiently tag b-jets has been enhanced for Run-2 with the addition of the Insertable B Layer (IBL), and improvements in the tracking and b-tagging algorithms. In the algorithm optimisation special emphasis has been placed in improving the performance for reconstructing high pT b-jets, addressing the challenges posed by track and vertex reconstruction in such an environment. The efficiency and rejection power of these algorithms have been calibrated on data taken in 2015, in particular by exploiting the copious production of b-jets in top quark decays, complemented by studies in multi-jet events. First results from the 2016 data will also be shown.
        Speaker: Gordon Watts (University of Washington (US))
      • 18:30
        Performance and results of the CMS-CASTOR calorimeter in LHC Run2 2h

        We present the performance of the CMS-CASTOR forward calorimeter
        during LHC Run2 data taking at a centre-of-mass energy of 13 TeV.
        Results on alignment and calibration are shown, together with a
        summary of produced physics output.

        Speaker: Hans Van Haevermaet (University of Antwerp (BE))
      • 18:30
        Performance evaluation of a panoramic coded aperture gamma camera at CMS 2h
        Gamma imaging allows operators to determine the position of radioactive sources or hotspots from greater distances than conventional rate meters, better aligning with ALARA principles, which are a common priority for all fields in the nuclear domain. A panoramic prototype gamma imager has recently been developed, based on a hybrid pixel detector, which consists of a 1 mm thick CdTe substrate, bump-bonded to the Timepix readout chip developed by the Medipix2 collaboration (256 x 256 pixels, 55 μm pitch, 14.08 x 14.08 mm2 sensitive area). A unique coded aperture is used, allowing for background subtraction without the use of heavy shielding, along with a method to extend the field-of-view (FOV) of the system. The output of each measurement is 360° x 60° and it has been rendered in spherical coordinates (θ, φ). The Compact Muon Solenoid (CMS) at the Large Hadron Collider (LHC), its requirements and protocols have been used as a test and demonstration platform and a description of the experimental results is presented.
        Speakers: Mr Florent Bonnet (Canberra (FR)), Mr Vincenzo Paradiso (CERN)
      • 18:30
        Performance of boosted object and jet substructure techniques in Run 1 and 2 ATLAS data 2h
        Hadronic decays of heavy particles with momenta much larger than their mass result in their decay products being reconstructable as a single large­radius jet. The study of the substructure of these jets allows the separation of these boosted decays with respect to more common jets from light­quarks and gluons. Several techniques have been developed by the phenomenology and experimental community to identify jets coming from hadronic decays of boosted top quarks, W, Z and Higgs bosons. The performance of several such techniques have been studied in ATLAS using fully­simulated Monte Carlo events, and validated on data using pure samples of top quarks, W bosons from top decays and dijet events. Results of these studies will be presented for Run 1 as well as Run 2 of the LHC.
        Speaker: Steven Randolph Schramm (Universite de Geneve (CH))
      • 18:30
        Performance of the ATLAS primary vertex reconstruction algorithms 2h
        The reconstruction of primary vertices in the busy, high pile up environment of the LHC is a challenging task. The challenges and novel methods developed by the ATLAS experiment to reconstruct vertices in such environments will be presented. Such advances in vertex seeding include methods taken from medical imagining, which allow for reconstruction of very nearby vertices will be highlighted. The performance of the current vertexing algorithms using early Run-2 data will be presented and compared to results from simulation.
        Speaker: Matt Zhang (Univ. Illinois at Urbana-Champaign (US))
      • 18:30
        Performance studies under high irradiation of resistive bulk-micromegas chambers at the CERN Gamma Irradiation Facility 2h
        Radiation studies on several resistive bulk-micromegas chambers produced at the CERN will be overviewed in this presentation. These resistive bulk-micromegas chambers have been installed at the new CERN Gamma Irradiation Facility (GIF++) exposed to an intense gamma irradiation with the aim of carrying out a long-term ageing study in order to evaluate the detector behaviour under high irradiation. The chambers under study have an active area of 10 x 10 cm2, strip pitch of 400 μm, amplification gap of 128 μm, and the possibility to adjust the width of the drift gap as needed. The results on the detector performance as function of the photon rate up to 130 MHz/cm2 will be shown as well as the ageing properties as function of the integrated charge and the current intensity and its stability with time. In addition, the results of the efficiency measurements before, during and after the irradiation will be also presented as a function of the amplification voltage as which the chambers are operated. Finally, the experimental results will be compared with GEANT simulations in particular for the determination of the detector sensitivity to photons from 137Cesium.
        Speaker: Ourania Sidiropoulou (Bayerische Julius Max. Universitaet Wuerzburg (DE))
      • 18:30
        Phased Antenna Arrays for Radiodetection of Extremely-High-Energy Neutrinos 2h
        Radiodetection of Askaryan emission in dielectric media, such as polar ice, is one of the most promising avenues of detecting the expected extremely-high-energy neutrinos of astrophysical and cosmogenic origin. A phased array of antennas enables an increase effective gain (and therefore sensitivity) while maintaining a small profile to facilitate deployment down a borehole in the ice. Recent efforts to develop a neutrino-searching phased array will be shared, including results from an in-situ test on the Greenland ice sheet and anechoic chamber tests.
        Speaker: Dr Cosmin Deaconu (UChicago/ KICP)
      • 18:30
        Photon and electron identification with the ATLAS detector 2h
        The identification of prompt photons and the rejection of background, originating mostly from photons from hadron decays, relies on the high granularity of the ATLAS calorimeter. The electron identification is based on a likelihood discriminant to separate isolated electron from background electron originating from photon conversions, hadron misidentification and heavy flavour decays. Additionally, isolation variables provide further handles to separate signal and background. The measurements of the efficiencies of the electron and photon identification and isolation selections are performed with data. Tag and probe techniques are used with Z->ee, J/psi->ee and Z->l l gamma decays. Inclusive photon samples are also used to measure photon identification efficiency. The results of these measurement with the pp collisions data recorded in 2015 at sqrt(s)= 13 TeV, corresponding to an integrated luminosity of 3.2 fb-1, are presented. as well as a first look at 2016 data.
        Speaker: Leonor Cerda Alberich (Instituto de Fisica Corpuscular (ES))
      • 18:30
        Photon-initiated production of a di-lepton final state at the LHC: cross section versus forward-backward asymmetry studies 2h
        We explore the effects of Photon Induced (PI) production of a dilepton final state in the Large Hadron Collider environment. Using QED Parton Distribution Function (PDF) sets we can treat the photons as real partons inside the protons and compare their yield directly to that of the Drell- Yan (DY) process. In particular, we concentrate on an error analysis of the two mechanisms. In order to do so, we use the NNPDF set, which comes with a set of replicas to estimate the systematic PDF error. On the one hand, we find that the PI contribution becomes dominant over DY above a dilepton invariant mass of 3 TeV. On the other hand, the PI predictions are affected by a large error coming from the QED PDFs, well above the one affecting the DY mode. We assess the impact of these uncertainties in the context of resonant and non-resonant searches for a neutral massive vector boson (Z') through the differential cross section and Forward-Backward Asymmetry (AFB) observables as a function of the dilepton invariant mass. While the former is subject to the aforementioned significant residual errors the latter shows the systematic error cancellation expected (recall that AFB is a ratio of cross sections) even in presence of PI contributions, so that the recently emphasized key role played by AFB as a valid tool for both Z' discovery and interpretation in both resonant and non-resonant mode is further consolidated."
        Speaker: Juri Fiaschi (University of Southampton)
      • 18:30
        Physics performance and fast turn around: the challenge of calibration and alignment at the CMS experiment during the LHC Run-II 2h
        The CMS detector at the Large Hadron Collider (LHC) is a very complex apparatus with more than 70 million acquisition channels. To exploit its full physics potential, a very careful calibration of the various components, together with an optimal knowledge of their position in space, is essential. The CMS Collaboration has set up a powerful infrastructure to allow for the best knowledge of these conditions at any given moment. The quick turnaround of these workflows was proven crucial both for the algorithms performing the online event selection and for the ultimate resolution of the offline reconstruction of the physics objects. The contribution will report about the design and performance of these workflows during the operations of the 13TeV LHC RunII.
        Speaker: Salvatore Di Guida (Universita degli Studi Guglielmo Marconi (IT))
      • 18:30
        PIXEL-CLUSTER COUNTING LUMINOSITY MEASUREMENT IN ATLAS 2h
        A precision measurement of the delivered luminosity is a key component of the ATLAS physics program at the Large Hadron Collider (LHC). A fundamental ingredient of the strategy to control the systematic uncertainties affecting the absolute luminosity has been to compare the measurements of several luminometers, most of which use more than one counting technique. The level of consistency across the various methods provides valuable cross-checks as well as an estimate of the detector-related systematic uncertainties. This poster describes the development of a luminosity algorithm based on pixel-cluster counting in the recently installed ATLAS inner b-layer (IBL), using data recorded during the 2015 pp run at the LHC. The noise and background contamination of the luminosity-associated cluster count is minimized by a multi-component fit to the measured cluster-size distribution in the forward pixel modules of the IBL. The linearity, long-term stability and statistical precision of the cluster-counting method are characterized by comparison with several other ATLAS luminometers.
        Speaker: William Patrick Mccormack (Lawrence Berkeley National Lab. (US))
      • 18:30
        Precise measurement of reactor antineutrino flux and spectrum 2h
        The RENO(Reactor Experiment for Neutrino Oscillation) experiment is to measure the smallest neutrino mixing angle theta13 and |dm^2_ee| using anti-neutrinos emitted from the Hanbit nuclear power plant in korea. Due to unprecedentedly copious data and an accurate energy calibration, the experiment has measured the flux and energy spectrum of reactor electron antineutrinos quite precisely. It is essential to compare the observed and expected fluxes of reactor antineutrinos for determining the neutrino disappearance. The reactor neutrino flux is calculated from the reactor thermal power and the fission rate of individual fuel isotope. Time-dependent fuel composition changes the antineutrino fluxes and spectrum. We have observed an excess near 5 MeV with respect to the most commonly used reactor neutrino models. In this presentation, we describe how to derive the expected reactor neutrino fluxes and spectrum at both near and far detectors and present the comparison between data and prediction.
        Speaker: Dr JUNE HO CHOI (RENO Collaboration)
      • 18:30
        Precise measurements of the mass differences between the D*(2010)+, and the D+ and D0 mesons with the BABAR detector 2h
        We present a high precision measurement of the mass difference between the D*(2010)+ and D+ mesons using the decay chain D*(2010)+ -> D+ pi0, with D+ -> K- pi+ pi+ . The analysis has been performed on a data sample corresponding to an integrated luminosity of about 477 fb-1, collected with the BABAR detector at the PEP-II e+e- collider. We additionally combine this result with a previous BABAR measurement of m(D*(2010)+) - m(D0) to extract the mass difference between the charged and neutral D mesons. We obtain results that are approximately seven times more precise than the present world averages.
        Speaker: Michael Sokoloff (University of Cincinnati)
      • 18:30
        Precision Magnetic Field Calibration for the Muon $g-2$ Experiment at Fermilab 2h
        The Muon $g-2$ Experiment at Fermilab (E989) has been designed to determine the muon anomalous magnetic moment to a precision of 140 parts per billion (ppb), a four-fold improvement over the Brookhaven E821 measurement. Key to this precision goal is the absolute determination of the magnetic field of the experiment's muon storage ring to better than 100 ppb. The magnetic field will be measured and monitored by nuclear magnetic resonance (NMR) probes, which are mounted on a trolley and pulled through the muon storage region when muons are not being stored. These trolley probes will be calibrated in terms of the free-proton Larmor precession frequency $\omega_{p}$ by a specially-constructed NMR absolute calibration probe. In E821, the uncertainty in the field measurement was 170 ppb, of which 50 ppb was due to the absolute probe. In E989, these uncertainties will be reduced to 70 ppb and 35 ppb, respectively. To meet these stringent requirements, a new calibration probe has been designed and built, along with a so-called plunging probe. This plunging probe will be used to transfer the calibration to the trolley probes. This poster will present the design, fabrication, and testing of the absolute and plunging probes, along with the calibration procedure.
        Speaker: David Flay (University of Massachusetts, Amherst)
      • 18:30
        Probing H+ with the mu_x boosted bottom-jet tag 2h
        We present the discovery potential for a TeV-scale charged Higgs using 100--300 ${\rm fb}^{-1}$ of 13--14 TeV LHC data. While $H^+$ is predicted by a generic two Higgs doublet model, strong phenomenological constraints restrict our focus to type-II models in the alignment limit. We examine $H^+$ produced in association with, and decaying to, 3rd generation quarks ($pp\to \bar{t} b (H^+\to t \bar b)$). The $H^+\to t \bar b$ final state gives $H^+$ superior reach (compared to its neutral $H/A$ siblings) in the critical ``wedge'' region ($\tan(\beta) = 2 \text{--} 20$), where the dominant neutral coupling transitions from $y_t^{}$ to $y_b^{}$. We tag massive $H^+\to t\bar{b}$ by pairing a high-efficiency boosted-top tag with our low fake-rate $\mu_x^{}$ boosted bottom-jet tag (which rejects light jets ${\sim}10$ times better than prior $b$~tags). The success of the $\mu_x^{}$ tag to suppress the QCD background for $H^+$ events further validates its usefulness in the high-$p_T^{}$ regime (as has already been demonstrated in generic $W^\prime$ and leptophobic $Z^\prime$ searches).
        Speaker: Keith Pedersen (Illinois Institute of Technology)
      • 18:30
        Probing lepton-flavor violation with quarkonium decays 2h
        We study lepton-flavor violating two and three-body quarkonium decays $H_{qq} \to \bar \ell_2\ell_2$ and $H_{qq} \to \gamma \bar \ell_1 \ell_2$ in effective field theory. By combining data from different decay modes, we extract Wilson coefficients of effective operators with quark flavors $q=u, d, s, c$, and $b$ and leptons $\ell_i = e, \mu, \tau$. We use this information to constrain several models of New Physics.
        Speaker: Mr Derek Hazard (Wayne State University)
      • 18:30
        Probing the interplay between composite vector resonances and top partners at the LHC 2h
        Fermionic and vector resonances are a generic prediction of theories where electroweak symmetry breaking is triggered by new strongly interacting dynamics at the TeV scale. We work in a concrete, predictive "discrete" **two site** prescription of the **Composite Higgs model** where the spontaneous breaking of the SO(5)/SO(4) coset gives the Standard Model gauge bosons and six heavy vector resonances. The heavy resonances come as an $SU(2)_L$ triplet with hypercharge $Y = 0 $ and three $SU(2)_L$ singlets which hypercharges $Y=0, \pm 1$. We implement a **partially composite scenario** for the top sector which gives us the $1/3, 2/3$ and $5/3$ charged top partners.  These transform as a 4-plet and a singlet of SO(4). We focus on the **phenomenology of the heavy vector resonances** where the parameter space is able to account for the direct and indirect (electroweak and flavor precision) constraints and also satisfies the naturalness criteria.  These considerations allow us to study the implications of the top partners on the vector resonances owing to a mild hierarchy between the top partners and the heavy vector resonances. In contrast with the top partners, the branching ratios of the heavy vector resonances strongly depend on model parameters. We find that when kinematically allowed, vector resonances decay to top partners instead of pure Standard Model final states.  These top partner channels can be used to search for top partners from vector resonances and thereby discover (exclude) these vector resonances itself at the 13 TeV run of the LHC. We also discuss the 2 TeV diboson excess in the 8 TeV LHC data.
        Speaker: Dr Bithika Jain (Korea Institute of Advanced Study, Seoul)
      • 18:30
        QCD equation of state at finite density and finite magnetic field 2h
        The Polyakov linear-sigma model (PLSM) and Hadron Resonance Gas (HRG) model are considered to study the hadronic and partonic equation(s) of state for the case of nonzero external magnetic fields. Thermodynamic quantities including the pressure, interaction rate, entropy density, magnetization and the speed of sound are presented as function of the temperature and the magnetic field and compared with recent lattice QCD calculations. Positive magnetization indicates paramagnetic properties. Direct and inverse catalysis depends on increasing and decreasing critical temperature with the magnetic field. Confronting PLSM and HRG to lattice QCD gives an indirect estimation for the effective degrees of freedom, coupling, etc.
        Speaker: Ms Nada EZZELARAB ((Researcher and teaching assistant at MTI univ.))
      • 18:30
        QCD studies at FCC-ee 2h
        The current status of the theoretical and experimental uncertainties associated with the extraction of the strong coupling constant is reviewed, as well as the improvements expected from LHC data in the coming years, and future perspectives achievable in e+e− collisions at the Future Circular Collider (FCC-ee) with O(1--100 ab−1) integrated luminosities yielding 1012 Z bosons and jets, and 108 W bosons and τ leptons, are thoroughly reviewed. The current uncertainty of the 2015 strong coupling world-average value, αs(mZ) = 0.1177 ± 0.0013, is about 1\%. At the FCC-ee, a factor of ten reduction in the αs uncertainty should be possible, mostly from the inclusive measurements from the hadronic decay widths of the Z and W.
        Speakers: David d'Enterria (CERN), Peter Skands (Monash University (AU))
      • 18:30
        Radiation length imaging with high resolution tele- scopes 2h
        The construction of low mass vertex detectors is of high interest for next generation collider experiments like Belle II. Test beam experiments with multi GeV particle beams and high resolution tracking telescopes provide an opportunity to obtain precise 2D images of the radiation length X/X0 of thin planar targets like detector modules. The method devel- oped to measure the radiation length uses hits from the reference telescope and requires no readout of the detector module under study. At the heart of a spatially resolved X/X0 measurement is a precise reconstruction of the particle’s hit position and scattering angle at the target plane. The main challenges are the alignment of the reference telescope and the calibration of its angular resolution. System- atical uncertainties can be minimized by conducting a calibration measurement, where the module under study is replaced by an aluminium target with a well known thickness profile. In order to demonstrate the capabilities of X/X0 imaging, a test beam experiment with the AIDA telescope has been conducted at the DESY test beam facility. The devices under test were a mechanical prototype of a DEPFET pixel module and a SVD Origami silicon strip sensor for the Belle II vertex detector. An overall data sample of more than 200 million tracks at 4 GeV has been collected. The data is sufficient to resolve bump bonds below the readout ASICs and to measure the thickness profile of the all-silicon DEPFET module.
        Speaker: Ulf Stolzenberg
      • 18:30
        Rapidity Distributions in Drell-Yan and Higgs Productions at Threshold to N3LO in QCD 2h
        Precise theoretical predictions for the Higgs boson production in gluon fusion and the Drell-Yan production of a pair of leptons at NNLO in pQCD play an important role in testing the Standard Model. The recent computation of the full threshold contribution to the inclusive production cross section of the Higgs boson at N$^3$LO by Anastasiou. et. al. contains valuable information about the soft gluons resulting from virtual and real emission partonic subprocesses. In this talk, we will discuss how this information along with the Sudakov resummation of QCD amplitudes, renormalization group invariance and the mass factorization theorem can be utilized to obtain the threshold N$^3$LO perturbative QCD corrections to the rapidity distributions of the Higgs boson in gluon fusion and dileptons in the Drell-Yan process. This enables us to compute the full delta contribution, which was missing in the literature, and hereby give predictions for these very important observables at threshold N$^3$LO at the LHC.
        Speaker: Taushif Ahmed (The Institute of Mathematical Sciences, India)
      • 18:30
        Reconstruction and performance of Missing Transverse Energy with 3.21 fb^­1 of data collected by the ATLAS detector 2h
        At the LHC, the Missing Transverse Energy (E_{T}^{miss}) is defined as the transverse component of the energy of particles that do not leave any detectable signatures. As such it is a vital component in many searches for SUSY or dark matter. In 2015, the ATLAS detector collected good quality data corresponding to 3.21 fb^{­1} of integrated luminosity, which provides an excellent test of the performance of E_{T}^{miss}. In run 2, the E_{T}^{miss} uses a track based soft term and calibrated preselected user defined hard objects. E_{T}^{miss} is studied in event topologies without real E_{T}^{miss}, such as Z­>\mu\mu/ee and with real E_{T}^{miss} such as W­>e\nu_{e}/\mu\nu_{\mu}. The distributions of E_{T}^{miss} and its components are compared between data and monte carlo simulated signals/backgrounds. The E_{T}^{miss} diagnostics such as the scale, resolution and response are shown.
        Speaker: ATLAS Collaboration (CERN)
      • 18:30
        Reconstruction of hadronically decaying tau leptons with ATLAS 2h
        Tau leptons play an important role in many Standard Model and Beyond the Standard Model physics processes that are being investigated at the LHC. This poster describes the reconstruction, identification and energy calibration algorithms for hadronic tau decays employed for the data collected from proton-proton collisions in 2015-2016 with the ATLAS detector at the LHC center-of-mass energy sqrt(s)=13 TeV. The algorithms are stable with respect to the number of concurrent proton-proton interactions and have supported a variety of physics results at ATLAS. The performance is measured in most cases with Z boson decays to tau leptons selected from the collision data.
        Speaker: Blake Oliver Burghgrave (Northern Illinois University (US))
      • 18:30
        Refurbishment of KamLAND outer detector 2h
        The Kamioka Liquid-scintillator Anti-Neutrino Detector (KamLAND) at Kamioka-mine in Japan, witch has been taking data since Jan 2002, has detected reactor neutrinos and geo-neutrinos using 1,000ton ultra-pure liquid scintillator. The Outer Detector (OD) is a 3,200ton water Cherenkov detector with 225 20-inch photomultiplier tubes (PMTs). The OD is a cosmic ray-muon veto counter and suppresses muon-induced neutrons to enter the liquid scintillator inner detector (ID). The muon tagging efficiency of the OD had gradually decreased since 2010, which was caused by gradual failure of 20-inch PMTs. To prevent increasing neutron backgrounds, we launched on OD refurbishment in Jan 2016. The 225 20-inch PMTs that were reuse of the Kamiokande-PMTs were replaced with 140 new 20-inch PMTs. At the relatively low sensitive region, the photo-coverage was enhanced and high reflective tyvek sheets were added. We present a report of OD refurbishment work and the latest data of the new OD.
        Speaker: Mr Hideyoshi Ozaki (Tohoku university)
      • 18:30
        Reggeon field theory RFT as an effective theory for QCD in Regge Limit 2h
        In this talk I will discuss if in the Regge limit , Reggeon field theory might serve as an effective theory of high energy scattering for strong interaction. Using the Functional Renormalization approach I will present results about the critical properties of the RFT : Flow equation, fixed points conditions, critical exponents evaluation and discuss the effect of the truncation on this analysis. Finally I will discuses the anomalous dimension effect and physical applications.
        Speaker: Carlos Contreras (Departamento de Fisica-Univ. Tecnica Federico Santa Maria (UTFSM)
      • 18:30
        Results from Borexino: geoneutrinos 2h
        Borexino has recently updated the electron antineutrino measurement with 906 ton-year exposure. In the whole dataset 77 antinu candidates have been identified after the application of the selection cuts. Exploiting the selected sample, Borexino alone has been in condition to prove the detection of the geo-neutrino signal with a significance as high as 5.9 sigma. Moreover, from the same data a geo-neutrino signal from the mantle is inferred at 98% C.L., and the radiogenic heat production for U and Th is restricted to the range 23-36 TW, taking into account the uncertainty on the distribution of heat producing elements inside the Earth. In the talk, such findings will be thoroughly illustrated and discussed.
        Speaker: Collaboration BOREXINO (LNGS)
      • 18:30
        Results from the DM-Ice17 Dark Matter Experiment at the South Pole 2h
        DM-Ice is a phased experimental program using low-background NaI(Tl) crystals aimed at unambiguously testing the claim of dark matter detection by the DAMA experiments. DM-Ice17, consisting of 17 kg of NaI(Tl), has been continuously operating at a depth of 2457 m in the South Pole ice for over five years, demonstrating the feasibility of a low-background experiment in the Antarctic ice. Studies of cosmogenic activation, muon phosphorescence, and the low-energy spectrum based on the primary physics run of DM-Ice17 will be presented. We will discuss the plan and sensitivity of a new joint physics run together with KIMS operating upgraded detectors at the Yangyang Underground Laboratory.
        Speaker: Jay Hyun Jo (Yale University)
      • 18:30
        SciFi - A large Scintillating Fibre Tracker for LHCb 2h
        The LHCb detector will be upgraded during the Long Shutdown 2 (LS2) of the LHC in order to cope with higher instantaneous luminosities and to read out the data at 40MHz using a trigger-less read-out system. All front-end electronics will be replaced and several sub-detectors must be redesigned to cope with higher occupancy. The current tracking detectors downstream of the LHCb dipole magnet will be replaced by the Scintillating Fibre (SciFi) Tracker. Concept, design and operational parameters are driven by the challenging LHC environment including significant ionising and neutron radiation levels. Over a total active surface of $360 \mathrm{m}^2$ the SciFi Tracker will use scintillating fibres (Ø 0.25 mm) read out by Silicon Photomultipliers (SiPMs). State-of-the-art multi-channel SiPM arrays are being developed to read out the fibres and a custom ASIC will be used to digitise the signals from the SiPMs. The project is now at the transition from R&D to series production. We will present the evolution of the design and the latest lab and test beam results.
        Speaker: Renato Quagliani (Laboratoire de l'Accelerateur Lineaire (FR))
      • 18:30
        Search for a light Dark Matter mediator in the dijet mass spectrum from pp collisions at √s = 13 TeV with the ATLAS detector 2h
        The ATLAS experiment has a rich program of searches for Dark Matter candidates. Most of them use a simplified model, where the colliding partons produce a mediator particle that decays into Dark Matter. For vector mediators, this approach produces limits competitive with direct detection experiments. However the limits become weaker for Dark Matter masses above 500 GeV, when the heaviest mediator produced in the LHC collisions decay off- shell. This limitation can be overcome by searching for a dijet resonance produced by the mediator decaying back into quarks. This method probes all Dark Matter masses bigger than half the mediator mass and is independent of the Dark Matter-mediator coupling. The current dijet search from ATLAS using 13 TeV pp collisions sets limits on mediator masses ranging from 1 TeV to 4 TeV. The lower limit is constrained by the high transverse momentum threshold in the unprescaled jet-based triggers. However the bounds from Dark Matter relic density prefer lighter mediators. This poster presents a new search where the mediator mass range probed goes down to 200 GeV, by triggering on events with an additional particle (jet or photon) coming from initial state radiation. The presence of the two resonance jets is used to further reduce the trigger rate in case of photon ISR.
        Speaker: Karol Krizka (University of Chicago (US))
      • 18:30
        Search for a low-mass dark-sector gauge boson with the BABAR detector 2h
        We report searches for a new muonic dark force mediated by a gauge boson (Z') coupling only to the second and third lepton  families. The existence of the Z' boson is probed in e+e- -> mu+mu- Z', Z' -> mu+ mu- events, with an analysis based on the full data sample collected with the BABAR detector at the PEP-II e+e- collider. No significant signal is observed. Limits on dark-sector coupling constants are derived; these improve upon current bounds, and further constrain the allowed parameter space.
        Speaker: Prof. Romulus Godang (University of South Alabama)
      • 18:30
        Search for dark sector at BESIII 2h
        Low energy, high luminosity e+ e- colliders are believed to be good places to search for some exotic particles predicted in new physics models with dark sector phenomenology. BESIII as the only currently running tau-charm factory has great potential to probe these particles and models, with the largest samples of directly produced charmonia and some other unique datasets. In this talk, we will report some of such searches and related results, including search for di-muon decays of a CP-odd light Higgs boson($A^0$) in the radiative decay of $J/\psi$, dark photon searches using both the initial state radiation and $J/\psi$ decays in association with a pseudoscalar meson($\eta$, $\eta'$), and more generally the study of meson invisible decays.
        Speaker: Dayong Wang (Peking University (CN))
      • 18:30
        Search for Flavor Changing Neutral Current in Top Production and Decays 2h
        Searches for flavor changing neutral currents (FCNC) in top production and decay in CMS using Run I and Run II data are presented. FCNC searches are conducted to probe tqZ, tqGamma, tqH, and tgq interactions.
        Speaker: Tae Jeong Kim (Hanyang University (KR))
      • 18:30
        Search for gluino pairs in events with one lepton, jets and missing transverse momentum at sqrt(s)=13 TeV with the atlas detector 2h
        This poster presents the search for gluinos in final states with jets, missing transverse momentum an exactly one isolated electron or muon using 3.2 fb-1 of proton-proton collision data at sqrt(s)=13 TeV collected by the ATLAS detector during 2015. The targeted signal models, the expected background physics processes and the overall analysis strategy are outlined. The results obtained in the various analysis control, validation and signal regions are shown. A statistical interpretation of the observed data is provided in the context of a simplified model where pair produced gluinos decay via the lightest chargino to the lightest neutralino. Within this model, exclusion limits on the gluino, chargino and lightest neutralino masses are illustrated in two benchmark scenarios. Subject to the progress of data-taking in 2016, new results of this search might be shown in addition.
        Speaker: Stefano Zambito (Harvard University (US))
      • 18:30
        Search for Higgs pair-production in the bbtautau final state with the ATLAS detector 2h
        A search for Higgs pair-production where one Higgs decays to bbbar and other Higgs to two tau leptons at the ATLAS experiment is presented. Both the lephad and hadhad decay modes of the final state taus are included. Results are interpreted in the context of Randall-Sundrum graviton and 2HDM models in the case of resonant production, and as enhancements compared to SM predictions of non-resonant Higgs pair-production. The results use data recorded by the ATLAS experiment at vs = 13 TeV during 2015 and 2016.
        Speaker: Puja Saha (Northern Illinois University (US))
      • 18:30
        Search for highly-ionizing particles in the NOvA Far Detector 2h
        In this work we investigate the possibility to search for highly-ionizing particles, such as strangelets (hypothetical stable lumps of strange quark matter), with the NOvA Far Detector. The NovA experiment is a long-baseline neutrino oscillation experiment, designed to observe electron neutrino appearance, but it may also be used to detect highly ionizing particles of astrophysical origin. The NOvA Far detector is a 14kTon fine-grained, low-Z, total-absorption tracking calorimeter that provides excellent granularity and energy resolution and relatively low-energy neutrino thresholds. As a surface detector with large area, 4290 $m^{2}$, NOvA may achieve a sensitivity never reached before for certain classes of strangelets.
        Speaker: Cristiana Principato (University of Virginia)
      • 18:30
        Search for long-lived neutral particles decaying into “lepton-jets” with the ATLAS detector in proton-proton collision data at sqrt(s) = 13 TeV 2h
        Several models of elementary particle physics beyond the Standard Model, predict the existence of neutral particles that can also be long lived and decay in collimated jets of light leptons and hadrons (lepton-jets). The present contribution refers to the search for displaced lepton-jets in proton-proton collision data sample recorded at $sqrt{s}$=13 TeV during 2015 and 2016 data tacking periods. The selected events are compared with the Standard Model expectations and with various BSM predictions.
        Speaker: Antonio Policicchio (INFN Cosenza)
      • 18:30
        Search for Magnetic Monopoles with the NOνA Far Detector 2h
        The NOνA experiment aims to study the mixing behavior of neutrinos and will attempt to resolve the neutrino mass hierarchy. The construction and instrumentation of the 14 kT far detector finished in 2014. Due to its surface proximity, large surface area, and continuous readout, the NOνA far detector is sensitive to the detection of magnetic monopoles which would be highly ionizing particles traversing the entire detector. In order to record candidate magnetic monopole events with high efficiency and low trigger rate, we have designed a software-based trigger to make decisions based on the data recorded by the detector. The decisions must be fast, have high efficiency, and a large rejection factor for the over 100,000 cosmic rays that course through the detector every second. In this poster, we will describe the off-beam triggering system implemented for monopole detection together with a first look at the collected data.
        Speaker: enhao song (university of virginia)
      • 18:30
        Search for new, long-lived, charged particles using ionization in the ATLAS Pixel Detector 2h
        Several extensions of the Standard Model predict the existence of charged, very massive, and long-lived particles. Because of their high masses these particles would propagate non-relativistically through the ATLAS pixel detector and are therefore identifiable through a measurement of large specific energy loss. Measuring heavy, long-lived particles through their track parameters in the pixel detector allows sensitivity to particles with lifetimes in the nanosecond range and above. This search presents an inner detector driven method for identifying such particles in proton-proton collisions at 13 TeV with the 2015 dataset corresponding to an integrated luminosity of 3.5 pb$^{-1}$. Subject to the progress of data-taking in 2016, new results of this search might be shown in addition.
        Speaker: Bradley Dean Axen (Lawrence Berkeley National Lab. (US))
      • 18:30
        Search for pair production of Higgs bosons in the 4b final state using pp collisions at 13 TeV with the ATLAS detector 2h
        The discovery of a Higgs boson at the Large Hadron Collider motivates an enhanced effort to search for new physics via the Higgs sector. Many new physics models predict rates of Higgs boson pair production significantly higher than the SM rate. TeV-scale resonances such as the first Kaluza-Klein excitation of the graviton predicted in the bulk Randall-Sundrum model or a heavy neutral scalar of two-Higgs-doublet models can decay into pairs of Higgs bosons. Enhanced non-resonant pp->hh production can also arise in models such as those with new, light, coloured scalars or direct $t\bar{t}hh$ vertices. This poster presents an analysis based on the Run 2 ATLAS search in the 4b final state which set limits on both resonant and non-resonant Higgs boson pair production. Two complementary Higgs boson reconstruction techniques are employed. The first---``resolved''---technique reconstructs Higgs boson candidates from pairs of nearby anti-kt jets with radius parameter R = 0.4, each b-tagged with a multivariate b-tagging algorithm. This resolved technique offers good efficiency over a wide range of Higgs boson momenta and so can be used to reconstruct di-Higgs-boson resonances with mass up to 1200~\GeV. At higher masses the anti-kt R-0.4 jets begin to merge, motivating the use of a second---``boosted''---Higgs boson reconstruction technique that maintains acceptance for these higher-mass resonances through the use of large radius jets and jet substructure techniques. In boosted regime, the Higgs boson candidate is reconstructed as a single, trimmed anti-kt R=1.0 jet which must have two associated b-tagged anti-kt R = 0.2 track-jets. This poster presents the first run-2 results and lessons learned.
        Speaker: John Alison (University of Chicago (US))
      • 18:30
        Search for Space-Time Correlations from the Planck Scale with the Fermilab Holometer 2h
        Measurements are reported of high-frequency cross-spectra of signals from the Fermilab Holometer, a pair of co-located 39-m, high-power Michelson interferometers. The instrument obtains differential position ensitivity to cross-correlated signals far exceeding any previous measurement in a broad frequency band extending to 7.6 MHz, twice the inverse light crossing time of the apparatus. General experimental constraints are placed on parameters of a set of models of universal exotic spatial shear correlations, with a sensitivity that exceeds the Planck-scale holographic information bound of space-time position states by a significant factor.
        Speaker: Mr Jonathan Richardson (University of Chicago)
      • 18:30
        Search for Stable Massive Particles with the ATLAS detector in pp collisions at sqrt(s)=13 TeV 2h
        A search for heavy long-lived charged R-Hadrons is performed using data from proton--proton collisions at sqrt{s} = 13 TeV collected by the ATLAS Experiment at the Large Hadron Collider at CERN. The analysis utilises both time-of-flight and specific-ionisation energy-loss measurements to derive the velocity and subsequently the mass of the particles and places upper cross-section limits in a mass range from 600 GeV to 3000 GeV as well as mass exclusion limits for stable R-Hadrons.
        Speaker: Sascha Mehlhase (Ludwig-Maximilians-Univ. Muenchen (DE))
      • 18:30
        Search for sterile neutrinos at RENO 2h
        The RENO experiment was designed to measure a neutrino mixing angle of theta13, by detecting electron antineutrinos emitted from the Hanbit nuclear reactors in Korea. It succeeded in measuring the mixing angle by their disappearance in three neutrino framework. We have searched for sterile neutrinos in the disappearance of reactor neutrinos at RENO experiment. In this talk, we present a result of the search using chi-square analysis method. An excluded region of sin^2(2theta14) vs. Delta(m41)^2 will be shown.
        Speaker: insung yeo (RENO collaboration, Chonnam Natinoal University)
      • 18:30
        Search for supersymmetry at 13 TeV in final states with two same-sign leptons or at least three leptons and jets using pp collisions recorded with the ATLAS detector 2h
        A search for strongly produced supersymmetric particles decaying into final states with multiple energetic jets and either two isolated leptons (e or μ) with the same electric charge or at least three isolated leptons will be presented. To extend its sensitivity, the search uses jets originating from b-quarks, missing transverse momentum, and other observables. The analysis uses proton-proton collision data at sqrt(s) = 13 TeV recorded with the ATLAS detector at the LHC. Results will be interpreted in the framework of simplified models featuring gluino and squark production.
        Speaker: Othmane Rifki (University of Oklahoma (US))
      • 18:30
        Search for supersymmetry in events with a Z boson, jets, and missing transverse momentum in pp collisions at sqrt(s)=13 TeV with the ATLAS detector 2h
        A search for supersymmetric particles decaying to a Z boson, jets, and invisible particles is presented. The search is performed using 13 TeV proton-proton collisions recorded by the ATLAS detector at the Large Hadron Collider. The results are interpreted using a simplified model in which gluinos are produced and subsequently decay via the second lightest neutralino to Z bosons and lightest supersymmetric particles.
        Speaker: Tova Ray Holmes (Lawrence Berkeley National Lab. (US))
      • 18:30
        Search for supersymmetry in the multijet+MET final state 2h
        We present results from a generic search for strongly-produced supersymmetric particles in pp collisions in the multijet + missing transverse momentum final state. The data sample corresponds to 2.3 fb-1 recorded by the CMS experiment at 13 TeV. This search is highly motivated by both theoretical and experimental considerations. In supersymmetry (SUSY) theories disfavoring fine-tuning of the Higgs mass, strongly-produced SUSY particles, including the gluino and top squark, are predicted to have masses on the order of a TeV. These particles also have some of the highest production cross sections in SUSY and give rise to final states with distinct, high jet multiplicity event signatures. To make the analysis sensitive to a wide range of such final states, events are classified by the number of jets, the scalar sum of the transverse momenta of the jets, the vector sum of the transverse momenta of the jets, and the number of b-tagged jets. The tails of the distributions of these variables make up a region of extreme kinematics for the significant standard model (SM) backgrounds. As these distributions are difficult to model in simulation, we model them using dedicated techniques and control regions in data for each background process. No significant excess is observed beyond the SM expectation. The results are interpreted as limits on simplified SUSY models. In these models, gluinos with masses as high as 1600 GeV are excluded at 95% CL for scenarios with LSP mass, exceeding the limits set in Run I by more than 200 GeV.
        Speaker: John William Bradmiller-Feld (Univ. of California Santa Barbara (US))
      • 18:30
        Search for the SM four top quark production with the ATLAS detector at the LHC. 2h
        A search for the Standard Model four top quark production in proton-proton collision data at √s=13TeV, collected with the ATLAS detector at the Large Hadron Collider is presented. Data is analysed in the single lepton channel which is characterised by an isolated electron or muon with high transverse momentum, large missing transverse energy and multiple jets. The search exploits the distinguishing up to 10 jets final state of the signal events and the high total jet transverse momenta, both of which provide good discrimination against the dominant background, namely the top-quark pair production in association with jets. Events are categorised according to their jet and b-tagged jet multiplicities in order to improve the sensitivity to systematic uncertainties arising from the jet energy calibration or the modelling of the tt¯+jets production. Upper bounds on four top quark production with SM hypothesis and in several new physics scenarios are set.
        Speaker: Leonid Serkin (INFN Gruppo Collegato di Udine and ICTP Trieste (IT))
      • 18:30
        Search for Time-Varying Neutrino Oscillation and Lorentz-CPT Violation at Daya Bay 2h
        We discuss a search for time-varying $\bar{nu}_{e}$ oscillation probability and Lorentz-CPT violation at the Daya Bay Reactor Neutrino Experiment in the framework of the Standard Model Extension (SME). The experiment’s unique configuration of multiple baselines to three groups of nuclear reactors allows to constrain individual Lorentz-violating coefficients for the first time. In addition we search for time-varying $\bar{nu}_{e}$ oscillation probability in a model independent way using Fourier analysis. The current status searches of both searches will be described in this talk.
        Speaker: Ming-Chung Chu
      • 18:30
        Search for ttH production in the 4lepton+Jets channel at 13TeV with the ATLAS detector 2h
        Precise measurements of the top quark-Higgs boson Yukawa coupling may provide insights about the underlying mechanisms of Electroweak Symmetry Breaking. Measurements of Higgs boson production in association with top quarks provide a powerful probe of the top-Higgs Yukawa coupling. The current status of the search for ttH production in the 4lepton+Jets final state using the data collected by the ATLAS experiment at the center-of-mass energy 13 TeV in 2015 and 2016 is presented. The analysis is most sensitive to H->WW and H->ZZ decay channels and exploits the very good signal to background ratio in this final state.
        Speaker: Harish Potti (University of Texas (US))
      • 18:30
        Search for ttH production with Higgs decays to b quarks at ATLAS 2h
        Observing Higgs boson production in association with a pair of top quarks would allow a direct measurement of the top quark Yukawa coupling and provide an important test of the Higgs mechanism within the Standard Model. A search for this process is presented using pp collisions at sqrt(s) = 13 TeV, collected with the ATLAS detector in 2015 and 2016. Higgs boson decays to two b quarks, and top pair decays with one or two leptons, are considered. The results are combined with ttH searches in other decay channels.
        Speaker: John Stakely Keller (DESY (DE))
      • 18:30
        Searches for Beyond nuSM Physics with MINOS/MINOS+ 2h

        The MINOS experiment made precision measurements of the neutrino
        oscillation parameters that are governed by the atmospheric
        mass-squared splitting. These measurements were made with data that
        were collected while the NuMI muon neutrino beam operated in a low
        energy mode that peaks around 3 GeV. Today the NuMI beam is running
        with a higher energy mode that produces a neutrino energy spectrum
        that peaks around 7 GeV, allowing the MINOS+ experiment to probe
        neutrino oscillation phenomena that could potentially be governed by a
        fourth mass-squared splitting. If observed, the presence of a fourth
        mass-squared splitting would be compelling evidence for a sterile
        neutrino state. In this analysis, we will present the results of a
        search for $\nu_\mu$ $\rightarrow$ $\nu_e$ oscillation mediated by
        sterile neutrinos in MINOS+. The results will be contrasted against
        the measurements made by the LSND experiment.

        Speaker: Adam Schreckenberger (University of Texas at Austin)
      • 18:30
        Searches for narrow resonances decaying to pairs of boosted HH bosons 2h
        We present a search for narrow resonances production in gluon-gluon fusion followed by a decay into two Higgs bosons at 8 and 13 TeV. Decays of Higgs bosons into bottom quark pairs are considered for resonance masses above 1 TeV, where each Higgs boson is produced with large momentum, and the hadronization products of the pair of bottom quarks can usually be reconstructed as single large jets. The background from multijet and t ̄t events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal is identified as a peak in the dijet invariant mass spectrum of the remaining background events.
        Speaker: Angelo De Souza Santos (UNESP - Universidade Estadual Paulista (BR))
      • 18:30
        Searching for Long Lived Neutral Particles in the ATLAS Hadronic Calorimeter 2h
        The ATLAS detector is sensitive to the decay of neutral, weakly interacting, long-lived particles. Such decays can leave unique, detectable, signatures. This poster concentrates on preliminary results from a search for decays in the hadronic calorimeter in Run II: the search strategy looks for hadronic-only-calorimeter jets that have little or no tracks pointing at them. Many models can contain final states like this: Stealth SUSY, Baryogenesis, and a simple hidden sector scalar that decays to heavy fermion jets. Performance of the ATLAS Calorimeter Ratio trigger along with tools and preliminary results are shown.
        Speaker: Gordon Watts (University of Washington (US))
      • 18:30
        Searching for Periodic Variations in Nuclear Decay Rates using the NEMO-3 Detector 2h
        The NEMO-3 experiment searched for neutrinoless ββ decay over the course of more than seven years utilizing various different candidate isotopes. Due to its multi-observable design it was able to distinguish, with high fidelity, a number of auxilary processes including single β decays, α decays and more. Using this rich data set and capitalizing on its long observation period, a search for time-dependent periodic variations in NEMO-3 nuclear decay rates is presented.
        Speaker: Mr John Cesar (The University of Texas at Austin)
      • 18:30
        Sensitivity to Radon induced background in SuperNEMO 2h
        Based on the well-known NEMO-3 technique, the SuperNEMO detector combines tracking and calorimetric measurements to search for the hypothetical 0$\nu\beta\beta$ process. These unique features allow a full reconstruction of the kinematic of events and discrimination among different mechanisms behind 0$\nu\beta\beta$. The knowledge of the complete topology of the events also allows to have independant analysis channels to measure the different background contributions. The SuperNEMO Demonstrator Module is installed at Laboratoire Souterrain de Modane (LSM), under 4800 m.w.e. The $^{238}$U contained in the rocks surrunding the detector emanate $^{222}$Rn that can enter and bind onto the different parts of the detector. The $\gamma$ and e$^-$ released in the $^{222}$Rn decay chain, can mimic the 2e$^-$ signal via Compton or Möller scatterings. To reduce the level of $^{222}$Rn, an hermetic tent surrounding the detector will be intalled and flushed with $^{222}$Rn-free air. The collaboration has also performed a measurement compaign to evaluate and minimise the level of intrinsic $^{222}$Rn emanation from the components of the detector. The decay chain of $^{222}$Rn includes so-called Bi-Po events, where the decays $^{214}$Bi$\rightarrow$ $^{214}$Po $+$ e$^{-}$ and $^{214}$Po$\rightarrow$ $^{210}$Pb $+$ $\alpha$ occur with a typical time separation of 164 $\mu$s. This time correlation among the prompt e$^-$ and the delayed $\alpha$ provides a very clean and sensitive measurement of $^{222}$Rn level in the detector. This poster describes the reconstruction of the e-$\alpha$ coïncidence and the development of an analysis to measure the amount of $^{222}$Rn in the SuperNEMO Demonstrator Module.
        Speaker: Thibaud LE NOBLET (LAPP)
      • 18:30
        Single Pion Production in Neutrino-Nucleon Reactions 2h
        This work represents an extension of the single pion production model proposed by [D. Rein][3]. The model consists of resonant pion production ([Rein-Sehgal][1] model and based on helicity amplitudes) and non-resonant background contributions coming from three born diagrams in the helicity basis. The new work includes **lepton mass effects**, and non-resonance interaction is described by **five diagrams** as it is proposed in [HNV paper][4]. The main challenge of this work has been to calculate them in the helicity basis in order to evaluate the **interference effect** of resonant and non-resonant interactions. The present model can describe single pion production in neutrino and anti-neutrino induced charged current interactions, i.e. \begin{equation} \nu_{\mu} + p \longrightarrow \mu^{-} p \pi^{+}~~~~,~~~~~~~~ \bar\nu_{\mu} + p \longrightarrow \mu^{+} p \pi^{-} \end{equation} \begin{equation} \nu_{\mu} + n \longrightarrow \mu^{-} n \pi^{+}~~~,~~~~~~~~\bar\nu_{\mu} + n \longrightarrow \mu^{+} n \pi^{-} \end{equation} \begin{equation} \nu_{\mu} + n \longrightarrow \mu^{-} p \pi^{0}~~~~,~~~~~~~~\bar\nu_{\mu} + p \longrightarrow \mu^{+} n \pi^{0} \end{equation} The model prediction is in good agreement with all existing bubble chamber neutrino and anti-neutrino data with **W<2 GeV** cut. The comparisons are performed for angular and W distributions, $Q^{2}$-differential cross-section and integrated cross-section for different channels. A model that has better agreements with data can reduce the uncertainties in neutrino oscillation measurements which is the main goal of neutrino experiments. [1]: https://inspirehep.net/record/155538 [3]: https://inspirehep.net/record/252248 [4]: https://inspirehep.net/record/742678
        Speaker: Monireh Kabirnezhad
      • 18:30
        Solar, supernova, atmospheric and geo neutrino studies using JUNO detector 2h
        Aside from its primary purpose of shedding light on the mass hierarchy (MH) using reactor anti-neutrinos, the JUNO experiment in Jiangmen (China) will also contribute to a series of measurements on neutrinos from non-reactor sources. In this poster we will review JUNO's goals in the realms of Supernova (SN), atmospheric, solar and geo-neutrinos; present the related experimental issues and provide the current estimates of its potential. For a typical galactic SN at a distance of 10 kpc, JUNO will record about 5000 events from inverse beta decay, 2000 events from elastic neutrino-proton scattering, 300 events from neutrino-electron scattering, and the charged current and neutral current interactions on the 12C nuclei. With a dedicated detector and real time event selection design, JUNO is expected to contribute to characterize the SN explosion mechanism. In addition, observation of the diffuse supernova neutrino background is also plausible in the JUNO framework. For atmospheric neutrinos, JUNO should be able to detect νe and νμ charged current events. The muon angular accuracy may be better than 1° for long muon tracks. Optimistically, a determination of the MH could be achieved at the 1.8σ (2.6σ) level after 10 (20) years of data taking. JUNO will also study solar neutrinos from 7Be and 8B, at low (~1 MeV) and higher energies respectively, to improve our understanding of the matter effects on the oscillation mechanism and of the solar metallicity. The challenges of the radioactive and cosmogenic backgrounds, together with the expected performances for two benchmark scintillator radio-purities, will be shown. The flux of geo-neutrinos gives us an insight on the Earth composition and formation. We will show how the increased sample size given by JUNO's large sensitive mass of 20 KTon liquid scintillator will provide data to answer to several geological questions among which the U/Th ratio and mantle measurements.
        Speaker: Giuseppe Salamanna (Roma Tre Universita Degli Studi (IT))
      • 18:30
        Some Ideas and Designs for Simplification of Cavity-Based Dark Matter Searches 2h
        Some ideas and designs are reported here for simplified and modified resonant signal detection scheme to aid in cavity-based Dark Matter searches, especially for Skivie axions. An enhanced and more sensitive on-resonance signal detection scheme is proposed incorporating a modified Colpitts oscillator and simple read-out electronics which simplifies the electronics associated with usual DM search experiments. In addition, we suggest the use of Hallbach geometry magnets to eliminate the need for expensive and large electromagnets, which pose a number of problems including background noise and arduous handling. We hope that these ideas could be useful in improving and simplifying cavity-based cold dark matter searches.
        Speaker: Masroor Bukhari (Jazan University)
      • 18:30
        Spatial Imaging of Charge Transport in Silicon and Germanium at Low Temperature 2h
        Both silicon and germanium exhibit non-trivial charge transport at cryogenic (sub-kelvin) temperatures. Due to the anisotropic mass-tensors of the energy minima in the conduction bands, free electrons travel obliquely to the applied electric field. This oblique motion causes the carriers which occupy different energy minima to spatially separate as they move through the crystal. The purpose of the charge-transport experiment is to observe the oblique propagation of electrons by exciting a point source of charge carriers with a focused laser pulse on one face of a 4mm thick silicon or germanium crystal. After the electrons are drifted through the crystal by a uniform electric field, the pattern of charge density arriving on the opposite face is mapped and used to reconstruct the trajectories of the charge clusters. This test will be useful for refining the Monte Carlo analysis utilized in the Cryogenic Dark Matter Search (CDMS) experiment to model the transport of charge carriers through the high-purity silicon and germanium crystals which are used as dark matter detectors. We will present the results of the charge-transport experiment, along with measurements of inter-valley scattering as a function of both the applied electric field and temperature.
        Speaker: Robert Moffatt (Stanford University)
      • 18:30
        Strongly coupled physics Beyond the Standard Model with Petascale computing 2h
        One of the open questions in theoretical physics is the real origin of mass and it is related to electroweak symmetry breaking and the Higgs mechanism. The dynamical origin of electroweak symmetry breaking can have several viable explanations, many of which require new strongly coupled physics. In these systems, the Higgs boson appears as a composite bound state in a new gauge theory. Increased statistics at the run II of LHC will further constrain the phenomenologically viable models of this kind in the near future. Therefore, it is highly desirable to understand the general properties and specific features of the different competing models from the theoretical point of view. Given the strong dynamics of the new interactions, large non-perturbative lattice calculations are needed. We present results for the spectrum of a strongly interacting SU(3) gauge theory with $N_f = 8$ light fermions in the fundamental representation. Carrying out non-perturbative lattice calculations at the lightest masses and largest volumes considered to date, we confirm the existence of a remarkably light singlet scalar particle. This feature seems to be a generic trait of gauge theories near the conformal window. We also explore the rich resonance spectrum of the 8-flavor theory in the context of the search for new physics beyond the standard model at the LHC. Connecting our results to models of dynamical electroweak symmetry breaking, we estimate the vector resonance mass to be about 2 TeV with a width of roughly 450 GeV, and predict additional resonances with masses below ~3 TeV.
        Speaker: Enrico Rinaldi (Lawrence Livermore National Laboratory)
      • 18:30
        Studies of Radiation Damage in Silicon Photomultipliers for the Fermilab Mu2e Cosmic Ray Veto System 2h
        The Mu2e experiment at Fermilab will search for the coherent neutrinoless conversion of a muon to an electron in the field of an atomic nucleus with a sensitivity of four orders of magnitude better than previous experiments. The Mu2e detector is surrounded by a cosmic ray veto system (CRV) that is required to reduce the cosmic-ray background to 0.10 events over the course of the run with an efficiency of 99.99%. The CRV consists of four layers of scintillator strips with embedded wavelength-shifting fibers and silicon photomultiplier (SiPM) readout. The SiPMs will be exposed to a neutron background which over time may damage the sensors. Several different model SiPMs were irradiated at a proton beam facility. The dark current, dark rate, single photo-electron resolution, cross-talk and response before and after exposure will be presented. A comparison of an equivalent neutron irradiation will also be given.
        Speaker: Dr Kurt Francis (Northern Illinois University)
      • 18:30
        Study of decoherence effects in neutrino oscillations at Daya Bay 2h
        It is well known that the standard formula for neutrino oscillation probability is  approximate because of a number of assumptions in its derivation, such as the plane wave approximation. The wave-packet treatment provides a self-consistent way to describe the phenomenon of interference of coherent mass neutrino eigenstates and predicts a number of potentially observable effects like loss of coherence and a specific modification of the neutrino energy spectrum. Currently theoretical estimates of these effects range by orders of magnitude and a lack of experimental investigations make them very desirable. The Daya Bay Experiment has collected the largest statistics of reactor antineutrino interactions. Its eight antineutrino detectors having a good energy resolution of 7.5%/sqrt(E/MeV) and are placed at various baselines (~500m for near sites and ~1600 m for the far sites) from the three reactor plants, providing a unique platform to test possible deviations from the conventional neutrino oscillation formula. In this talk we discuss the status of the experimental study of the decoherence effect in the Daya Bay experiment.
        Speaker: Maria Dolgareva (Daya Bay)
      • 18:30
        Studying Neutrino Oscillations with Atmospheric Neutrinos in DUNE 2h

        The 40kt DUNE Far Detector, located at the Sanford Underground
        Research Facility, will offer unique capabilities for the study of
        atmospheric neutrinos. Due to the detector¹s excellent energy resolutions,
        angular resolutions, and particle ID capabilities, atmospheric neutrino
        analyses in DUNE can provide valuable information about 3-flavor
        oscillations, despite the relatively modest statistics. These data
        provide a complementary analysis approach to beam neutrinos, and can help
        resolve ambiguities in beam-only analyses. In this talk we will focus on
        the determination of the mass hierarchy, octant of theta23, and
        measurement of Delta_CP using atmospheric neutrinos in DUNE.

        Speaker: Luke Corwin (South Dakota School of Mines and Technology)
      • 18:30
        Superconducting qubit-based readout for ADMX 2h
        The Axion Dark Matter eXperiment (ADMX) aims to detect dark matter axions converting to single photons in a resonant cavity bathed in a uniform magnetic field. A qubit (two level system) operating as a single microwave photon detector is a viable readout system for ADMX and may offer advantages over the quantum limited amplifiers currently used. When weakly coupled to the detection cavity, the qubit transition frequency is shifted by an amount proportional to the cavity photon number. Through spectroscopy of the qubit, the frequency shift is measured and the cavity occupation number is extracted. At low enough temperatures, this scheme would allow sensitivities exceeding that of the standard quantum limit.
        Speaker: Akash Dixit (University of Chicago)
      • 18:30
        Support Vector Machines and generalisation in HEP 2h
        We review the concept of support vector machines (SVMs) and discuss examples of their use in a number of scenarios. One of the benefits of SVM algorithms, compared with neural networks and decision trees is that they can be less susceptible to over fitting than those other algorithms are to over training. This issue is related to the generalisation of a multivariate algorithm (MVA); a problem that has often been overlooked in particle physics. We discuss cross validation and how this can be used to improve the generalisation of a MVA in the context of High Energy Physics analyses. The examples presented use the Toolkit for Multivariate Analysis (TMVA) based on ROOT and describe our improvements to the SVM functionality and new tools introduced for cross validation within this framework.
        Speaker: Jonathan Hays (University of London (GB))
      • 18:30
        Systematic Studies of Final State Bremsstrahlung for LHC Phenomenology using Exact ${\cal O}(\alpha^2 L)$ CEEX EW Results from ${\cal KK}$ MC 4.22 2h
        With an eye toward the precision physics of the LHC, we present here some systematic studies relevant to the assessment of the expected size of multiple photon radiative effects in heavy gauge boson production with decay to charged lepton pairs. We use the new version 4.22 of \KK~MC so that we have CEEX exact ${\cal O}(\alpha^2 L)$ corrections and control over the corresponding initial-final interference effects as well. In this way, we illustrate the interplay between cuts of the type used at the LHC and the sizes of the expected responses of the attendant higher order corrections. Thus, our results are directly applicable to ongoing LHC experimental data analyses.
        Speakers: Bennie Ward (Baylor University (US)), Staszek Jadach (Polish Academy of Sciences (PL)), Zbigniew Andrzej Was (Polish Academy of Sciences (PL))
      • 18:30
        Systematic Uncertainties in the NOvA Electron Neutrino Appearance Analysis 2h
        NOvA is a long-baseline neutrino oscillation experiment that uses two functionally identical detectors separated by 809 kilometers at locations 14 milliradians off-axis from the NuMI muon neutrino beam at Fermilab. At these locations the beam energy peaks at 2 GeV. This baseline is the longest in the world for an accelerator-based neutrino oscillation experiment, which enhances the sensitivity to the neutrino mass hierarchy. One of the primary physics goals of the experiment is the measurement of electron neutrino appearance in the muon neutrino beam which yields measurements of the oscillation parameters $\sin^{2}2\theta_{13}$, $\delta$, and the mass hierarchy within the standard model of neutrino oscillations. The first electron neutrino appearance oscillation results were released in 2015. A second analysis with double the exposure is expected in 2016. In this talk, we will focus on the extrapolation of the Near Detector data to predict the spectrum at the Far Detector and discuss the classes of systematic uncertainties affecting this prediction.
        Speaker: Evan Niner (Fermilab)
      • 18:30
        Test Beam Performance and Detailed Studies of the Structure of Hadronic Showers with Highly Granular Calorimeters 2h
        The highly granular calorimeters developed and tested by the CALICE collaboration have provided large data samples with precise three-dimensional information on hadronic showers with steel and tungsten absorbers and silicon, scintillator and gas detector readout. We will discuss the performance of the RPC-based Semi-Digital Hadron Calorimeter in terms of energy resolution and pattern recognition, compared to Geant4 based simulations including a detailed modeling of the RPC response. The influence of granularity on the resolution obtained with digital, semi-digital and analog reconstruction method will be demonstrated based on the analogue HCAL data and simulations. We will also present the results of the performance studies of the combined scintillator-based calorimeter system (Sc-W ECAL, Sc-Fe AHCAL and Sc-Fe TCMT). The validation of the system with muons and electrons will be discussed as well as the single hadron energy resolution using both classical energy reconstruction and software compensation techniques in comparison with the predictions of Geant4 simulations. We will show the parametrisation of the radial development of hadronic showers in the Sc-Fe AHCAL and the progress in the predictions of several Geant4 physics lists. The results of the detailed measurement of hadronic showers in the SiW ECAL in terms of integral observables will be also presented; the observables, which characterise the interaction region and tracks produced by secondaries will be analyzed and compared to Geant4 simulations.
        Speakers: Arnaud Steen (National Taiwan University (TW)), Coralie Neubuser (Deutsches Elektronen-Synchrotron (DE)), Huong Lan Tran (Deutsches Elektronen-Synchrotron (DE)), Marina Chadeeva (National Research Nuclear University MEPhI (RU)), Oskar Hartbrich (D), Remi Ete (Universite Claude Bernard-Lyon I (FR))
      • 18:30
        Tests of CPT Symmetry in B0 - B0bar Mixing and in B0 -> c cbar K0 Decays 2h
        Using the Ci and Si values of the eight rates Ni ~ exp(-Gamma t) (1 + Ci cos(Delta m t) + Si sin(Delta m t)) for the decays Upsilon(4S) -> B0 B0bar -> f_1 f_2, with f_1 = l nu X before and after f_2 = c cbar KS (KL) as measured by the BABAR experiment with the full data set of 470 million B Bbar events [PRL 109, 211801 (2012)], we determine the three CPT-sensitive parameters Re(z), Im(z) and |A/Abar|, where A and Abar are the amplitudes for B0 -> c cbar K0 and B0bar -> c cbar K0bar decays, respectively. The results are in agreement with CPT symmetry.
        Speaker: Gerald Eigen (University of Bergen)
      • 18:30
        The 20-inch PMT system for the JUNO experiment 2h
        The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment currently under the stage of civil construction. The primary goal is to determine the neutrino mass hierarchy and precisely measure the oscillation parameters by detecting reactor anti-neutrinos. There will be around 20000 PMTs with a large photo-cathode of 20-inch equipped for the JUNO experiment, which include 15000 MCP PMTs from a Chinese vendor and 5000 Dynode PMTs from Hamamatsu. To achieve the designed 3% energy resolution, the PMTs are required to have very high detection efficiency as well as very compact layout in the central detector. The PMT system for JUNO includes PMT characterization, waterproof sealing, chain implosion protection, earth-magnetic field shielding, and finally their installation to the detector. Characterization of the PMTs will use a test stand developed in a container for mass testing and a scanning station for sampling test. Since the PMTs are required to work for 20 years in high purity water with a depth up to 45 m, and the front-end electronics including base, high voltage and the ADC chips will be put on PMT, it is very important to design a highly reliable waterproofed sealing. And in a situation that the PMTs will be closest possible arranged with the spacing only a few mm to achieve a coverage larger than 75% in the central detector, their protection from chain implosion and also their installation is very challenging. In this talk, all the aspects of building the large PMT system for the JUNO experiment will be addressed, with a focus on the most challenging parts mentioned above.
        Speaker: Zhonghua Qin (Institute of High Energy Physics, China)
      • 18:30
        The alignment of the ATLAS Inner Detector in Run- 2h
        ATLAS is a multipurpose experiment at the LHC proton-proton collider. Its physics goals require high resolution, unbiased measurement of all charged particle kinematic parameters. These critically depend on the layout and performance of the tracking system and the quality of its offline alignment. For the LHC Run II, the system has been upgraded with the installation of a new pixel layer, the Insertable B-layer (IBL). Offline track alignment of the ATLAS tracking system has to deal with about 700,000 degrees of freedom (DoF) defining its geometrical parameters, representing a considerable numerical challenge in terms of both CPU time and precision. An outline of the track based alignment approach and its implementation within the ATLAS software will be presented. Special attention will be paid to integration to the alignment framework of the IBL. Techniques allowing to pinpoint and eliminate tracking systematics due to alignment as well as strategies to deal with time-dependent variations will be briefly covered. The results from the 2015 data taking campaigns will be discussed in which a mechanical distortion of the IBL staves has been observed and preliminary results will be presented detailing how this effect is mitigated.
        Speaker: ATLAS Collaboration (CERN)
      • 18:30
        The Angra Neutrino Detector 2h
        *Neutrinos Angra* is a compact surface detector developed with the purpose of monitoring the Angra II nuclear reactor at Angra dos Reis city, Brazil. About 5 thousand inverse beta decay interactions are expected per day in its Water-Gadolinium Cherenkov target, positioned 30 m from the reactor's core, with a fiducial volume of 1.4 ton and equipped with 32 8-inches PMTs. In this presentation, the current status of the project is reported: validation of the readout system, the complete simulation of the detector and data acquisition and its comparison with background measurements performed away from the reactor. It is shown that after a minimum of 10 days of data taking, our data selection and veto techniques will be able to distinguish the neutrino flux with 5 sigmas above the cosmic background. The detector will be assembled in its final location in mid-2016 when it will become the first neutrino detector completely developed in Brazil.
        Speaker: Gustavo Valdiviesso (Universidade Federal de Alfenas)
      • 18:30
        The ATLAS Fast Tracker Processing Units - input and output data preparation 2h
        The ATLAS Fast Tracker is a hardware processor built to reconstruct tracks at a rate of up to 100 kHz and provide them to the high level trigger system. The Fast Tracker will allow the trigger to utilize tracking information from the entire detector at an earlier event selection stage than ever before, allowing for more efficient event rejection. The connection of the system from to the detector read-outs and to the high level trigger computing farms are made through custom boards implementing Advanced Telecommunications Computing Technologies standard. The input is processed by the Input Mezzanines and Data Formatter boards, designed to receive and sort the data coming from the Pixel and Semi-conductor Tracker. The Fast Tracker to Level-2 Interface Card connects the system to the computing farm. The Input Mezzanines are 128 boards, performing clustering, placed on the 32 Data Formatter mother boards that sort the information into 64 logical regions required by the downstream processing units. This necessitates the sharing of data between different data formatters at high bandwidth with low latency over the full-mesh backplane of the host shelf. Each data formatter board contains a custom micro-controller designed to manage the combined system, and provide the ability to download firmware on each field programmable gate array over Ethernet.In the FLIC system, each board receives 8 optical links with a bandwidth of 1 Gbps, re-formats the data to the ATLAS standard record format, performs the conversion from local to global module identifier, and sends the event records out to the High Level Trigger at 2 Gbps with a latency of O(10) microseconds.The Input Mezzanine and Data Formatter system is the first component of the Fast Tracker to be installed and commissioned. Since the start of the installation in December 2015, several boards have already been integrated into ATLAS, successfully taking data during proton-proton and heavy ion collisions. This poster discusses the current status of the installation, as well as the ongoing commissioning of the data flow while running with the ATLAS detector. Included in this talk is the status of the hardware, firmware and software of each of the systems and their microcontroller. The Run Control software required for integration of the system into the ATLAS detector is also discussed.
        Speakers: Arthur Bolz (Ruprecht-Karls-Universitaet Heidelberg (DE)), Arthur Bolz (University of Heidelberg)
      • 18:30
        The ATLAS JetEtmiss Energy Scale Calibration and Uncertainties 2h
        The measurement of the jet energy scale using data from sqrt(s) = 13 TeV collisions is presented. A sequence of Monte­Carlo based calibrations restore jets to the particle scale and use jet properties to significantly improve the jet resolution. A combination of measurements using Z+jet, gamma+jet, and multi­jet events is used to calibrate jets in data and to measure systematic uncertainties. A 5% data/MC difference is observed, and corrected for, at low pT. Uncertainties are as low as 1% at p_T^{jet} of 200 GeV, and for the first time in­situ measurements are extended to 2 TeV. More data from the 2016 run is expected to further reduce uncertainties and improve the results.
        Speaker: Baptiste Abeloos (Laboratoire de l'Accelerateur Lineaire (FR))
      • 18:30
        The CAPTAIN Experiment 2h
        The Cryogenic Apparatus for Precision Tests of Argon Interactions with Neutrinos (CAPTAIN) program is designed to make measurements of scientific importance to long-baseline neutrino physics and physics topics that will be explored by large underground detectors. The experiment employs two liquid Argon time projection chambers (LArTPCs), CAPTAIN and Mini-CAPTAIN. The CAPTAIN detector is a Liquid Argon Time Project Chamber (LArTPC) deployed in a portable and evacuable cryostat that can hold a total of 7700 liters of liquid argon. The Mini-CAPTAIN detector is a prototype of the CAPTAIN detector that contains 1700 liters of liquid argon. This talk will present the status of the CAPTAIN experiment.
        Speaker: Jianming Bian (UC Irvine)
      • 18:30
        The construction and quality assurance testing of the Fermilab Muon g-2 straw tracking detectors 2h
        improvement over the previous E821 measurement at Brookhaven. The experiment will also extend the search for the muon’s electric dipole moment (EDM) by approximately two orders of magnitude with a sensitivity down to 10$^{-21}$ e.cm. Both of these measurements are made by an analysis of the modulation of the decay rate of the higher-energy positrons from the (anti-)muon decays recorded by 24 calorimeters and 3 straw tracking detectors. The straw tracking detectors will be used to cross-calibrate the calorimeter, identify pileup and muons lost from the storage region, and to measure the beam-profile. A tracker measurement of the up-down modulation of positrons will be used in the EDM analysis. In this poster, the mechanical design of the straw tracking detector will be described. Each tracking detector module comprises 128 straws supported by two aluminium manifolds which contain the front-end readout and HV boards which are water cooled via a channel machined into the manifold. The straws are tensioned and crimped with bespoke tools. The manifold is housed in the vacuum chamber with an interconnecting flange which in turn is connected to the back-end readout electronics via an aluminium snout. Once each module is constructed a dedicated quality-control system will accurately determine the position of the wire at the center of the straws and the radius of each straw. The wire position is determined using a moveable and collimated beta-emitting source with a scintillator trigger and the straw wall using an X-ray source.
        Speaker: Aaron Epps (Northern Illinois University)
      • 18:30
        The Development and Characterization of PROSPECT Detectors 2h

        PROSPECT is a phased experiment consisting of segmented $^6$Li-loaded liquid scintillator antineutrino detectors designed to probe short-baseline neutrino oscillations and precisely measure the reactor antineutrino spectrum.
        The experiment will be located at the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory.
        The first phase is a movable 3 tonne antineutrino detector located 7-12 m from the compact, highly enriched uranium core.
        Over the past three years, PROSPECT has deployed multiple prototype detectors at HFIR to understand the local background environment and demonstrate active and passive background rejection.
        The single-segment test detector, PROSPECT-20, verified background simulations and demonstrated the optical performance expected in the full detector.
        A two-segment prototype, PROSPECT-50, is under development to demonstrate critical subsystems such as calibration, optical segmentation, light readout.
        We present results of the prototype program along with projections for the performance of the PROSPECT detector.

        Speaker: Thomas Langford (Yale University)
      • 18:30
        The early career, gender, and diversity actions within the LHCb Collaboration 2h

        Numerous surveys of modern particle physics indicate that the discipline is still largely a male pursuit, and one in which women and other marginalised groups continue to face discriminatory practices. The fraction of female particle physicists reduces with each career stage. Early career particle physicists face precarious employment conditions with serial short term contracts, long working hours, the frequent need to relocate, and little prospect for a permanent academic position. There are indications that these employment conditions add to the gender-imbalance in the field, but clearly, this problem directly affects both male and female early career scientists. The LHCb experiment has, as the first (and so far only) LHC experiment, created a dedicated office for Early Career Gender and Diversity (ECGD) (see http://lhcb.web.cern.ch/lhcb/ECGD_Office/ECGD-intro.html ). The ECGD office’s role is to to advise the management on ECGD matters; provide a point of contact for anybody experiencing any kind discrimination, bullying or harassment; collate regular statistics and other relevant information related to gender and, where appropriate, other ECGD matters; organise regular open meetings where ECGD matters are discussed. We report on our first year of experiences as the first ECGD officers in the LHC’s first ECGD office. Amongst the pitfalls of such an office is the potential of being perceived as either inconsequential, or as an external body that is a source of new rules and complications. We will highlight the strategies we adopted in an attempt to circumnavigate these pitfalls, aiming to be (and be seen as) an integral part of LHCb, working with the entire collaboration to achieve an environment in which all members can thrive. We will also discuss a few highlights of our programme in that year, including well-attended plenary meetings at LHCb weeks on topics such as “mentoring”, “(m/p)aternity leave”, “sexual harrassment”, “careers inside and outside HEP” - and the implementation of a mentoring scheme.

        Speakers: Barbara Sciascia, Jonas Rademacker (University of Bristol (GB))
      • 18:30
        The extension of the Telescope Array experiment 2h
        TAx4, Telescope Array Low Energy extension (TALE) and the Non-Imaging CHErenkov Array (NICHE) are extension plans of the Telescope Array (TA) experiment. The TA experiment was originally designed to study ultra-high energy cosmic rays with energies above about 1 EeV (1 EeV = $10^{18}$ eV) using surface detectors (SDs) and fluorescence detectors (FDs). These extension plans will enable us to observe cosmic rays with energies over 5 orders-of-magnitude (1 PeV - 100 EeV) in the same observation site in Utah. The construction of the detectors of TAx4, TALE and the prototype of NICHE (j-NICHE) has been already started. New SDs and FDs will be constructed for TAx4 to cover 4 times larger area than TA to observe cosmic rays with energies above 10 EeV with high statistics. This project is expected to clarify the source of the hotspot (Abbasi et al. 2014) in the arrival directions of cosmic rays with energies above 57 EeV. The TALE experiment has already measured cosmic rays to well below 0.1 EeV using newly developed FDs. New SDs are being constructed to be added around TALE FDs for better efficiency and resolution. The NICHE detectors are designed to observe cosmic rays with energies above 1 PeV using non-imaging Cherenkov technique. The measurement by TALE and NICHE over wide range of energies will provide accurate understandings of the transition from galactic cosmic rays to extragalactic cosmic rays using cross-calibration between different techniques. In this talk, the current status and the future prospects of the extension plans are shown.
        Speaker: Eiji Kido
      • 18:30
        The GBAR antimatter gravity experiment 2h
        The GBAR experiment (Gravitational Behaviour of Anti hydrogen at Rest) at CERN, aims to measure the free fall acceleration of ultracold neutral anti hydrogen atoms in the gravity field of the Earth [1]. Anti hydrogen ions (one antiproton and two positrons) are produced in the interaction of antiprotons and positronium in two subsequent charge exchange reactions. These ions will be sympathetically cooled with Be+ ions to less than 10 microK. The ultracold ions will then be photo-ionized just above threshold, to produce ultracold atoms, i.e. in the neV range. The free fall time over a known distance is then measured. The experiment will use the 100 keV antiprotons from the ELENA decelerator that is being built at CERN to produce bunches of 100 keV kinetic energy. The first antiproton beam is expected in autumn 2017. We will describe the project, the accuracy that can be reached by standard techniques, and discuss a possible improvement to reduce the vertical velocity spread. [1] G. Chardin et al., CERN-SPSC-P-342, 30/09/2011; P. Pérez and Y. Sacquin, Class.Quant.Grav. 29 (2012) 184008.
        Speaker: Dr Patrice Perez (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
      • 18:30
        The Higgs singlet extension at LHC Run 2 2h
        I discuss the current status of theoretical and experimental constraints on the real Higgs singlet extension of the Standard Model. For the second neutral (non-standard) Higgs boson the full mass range from 1 GeV to 1 TeV accessible at past and current collider experiments is considered. I present benchmark scenarios for searches for an additional Higgs state in the real Higgs singlet extension of the Standard Model in Run 2 of the LHC.I will furthermore discuss electroweak corrections to the H to hh partial decay width within this model.
        Speaker: Tania Robens (TU Dresden)
      • 18:30
        The ILD/CALICE Silicon-Tungsten Electromagnetic Calorimeter: status and potential 2h
        The Particle Flow Algorithms adopted for future Lepton Colliders detectors and phase-II LHC experiment upgrades require very high granularity calorimeters to deconvolve the individual contributions of particles in jets. This is especially true for electromagnetic calorimeters (ECAL). For a realistic large detector however many technological requirements have to be fulfilled: modularity for industrialisation; compact integration of an embedded very front-end electronics featuring large dynamics, low-power and self-triggering; mechanical structure and cooling systems with minimal dead zones. The technological prototype of the SiW-ECAL presented here should achieve all this; up-to 12 layers will be tested in beam in 2016, while design and optimisation studies are on-going on a variety of simulated key processes to test the performance of the hardware and the algorithms.
        Speaker: Kostiantyn Shpak (Centre National de la Recherche Scientifique (FR))
      • 18:30
        The Inside-Out LAPPD with Read-Out Pads and its Use in ATLAS 2h
        Large Area Picosecond Photo-Detectors are very fast-timing photodetectors with a photosensitive area of 20 cm by 20 cm. Picosecond timing could be useful in the High Luminosity LHC for pileup mitigation. In particular, I examine their possible use for the ATLAS High-Granularity Timing Detector, which would be placed in front of the forward electromagnetic calorimeter in the Phase II upgrade. To mitigate the high event rates and provide position resolution, it is necessary to segment the large area. However, in the current design, this would require many vacuum-penetrating transmission lines. Using the inside-out design, in which the readout is capacitively coupled to the internal anode, I demonstrate coupled pads with no transmission lines. I measure the position and time resolution in this configuration and apply these results to ATLAS.
        Speaker: Todd Seiss (University of Chicago (US))
      • 18:30
        The KLOE-2 experiment at DAFNE 2h
        The KLOE-2 experiment at the INFN Laboratori Nazionali di Frascati (LNF) is currently taking data at the upgraded e+e- DAFNE collider. Present Run II follows a development phase to assess the feasibility of a long term acquisition program, Run I, which successfully ended in July 2015 with 1 fb-1 integrated luminosity collected in less than eight months. For the first time the “crab-waist” concept – an interaction scheme, developed in Frascati, where the transverse dimensions of the beams and their crossing angle are tuned to maximize the machine luminosity – has been applied in presence of a high-field detector solenoid. Record performance in terms of 2 x 10^32 cm-2s-1 peak luminosity and 12 pb-1 maximum daily integrated luminosity were achieved with this innovative scheme of beam collisions, which will be employed in the upgrade of the B-factory currently under construction at the KEK Laboratory, in Japan, and is also considered a valid option in several future projects. KLOE-2 represents the continuation of KLOE with a new physics program mainly focused on the study of K short, η and η′ decays as well as on kaon interferometry, test of discrete symmetries, and search for physics beyond the Standard Model. The new data taking campaign aiming to collect more than 5 fb-1 integrated luminosity in the next 2-3 years, will allow to perform CPT symmetry and quantum coherence tests using entangled neutral kaons with an unprecedented precision, high precision studies of γγ-physics processes like e+e- -> e+e- pi0 (gg->pi0), and the search for signals of a hidden dark-matter sector, among the fields to be addressed. The general purpose KLOE detector, composed by one of the biggest Drift Chamber ever built surrounded by a lead-scintillating fiber Electromagnetic Calorimeter among the best ones for energy and timing performance at low energies, undergone several upgrades including State-of-The-art cylindrical GEM detector: the Inner Tracker. To improve its vertex reconstruction capabilities near the interaction region, KLOE-2 is the first high-energy experiment using the GEM technology with a cylindrical geometry, a novel idea that was developed at LNF exploiting the kapton properties to build a transparent and compact tracking system. To study γγ-physics the detector has been upgraded with two pairs of electron-positron taggers: the Low Energy Tagger (LET), inside the KLOE apparatus, and the High Energy Tagger (HET) along the beam lines outside the KLOE detector. An overview of the KLOE-2 experiment will be given including present status and achievements together with physics plans.
        Speaker: Antonio Di Domenico (Universita e INFN, Roma I (IT))
      • 18:30
        The Large-Area Picosecond Photon Detector (LAPPD$^{\text{TM}}$ ), an Ideal Tool for Quantum Optics 2h
        The large-area picosecond photodetector (LAPPD$^{\text{TM}}$) is an ultrafast imaging detector with single-photon sensitivity. It can supply a continuous stream of photon-detection events, resolved spatially to about 0.5 X 0.5 mm$^2$ on an area of 20 X 20 cm$^2$, and temporally to about 50 ps. The time resolution approaches the coherence time of light filtered with dielectric-layer interference filters, and so, the detector can then resolve photon occupations in each longitudinal mode of light. Furthermore, if used with diffraction-limited optics matched to the spatial resolution, the detector can also resolve about 400 by 400 transverse modes. LAPPD$^{\text{TM}}$ is thus an enabling technology for quantum optics where photon occupation numbers in each electromagnetic-field mode in 6-dimensional phase space are relevant, for example photon-correlation experiments (Hanbury Brown - Twiss, or ghost imaging). Reference: http://psec.uchicago.edu/
        Speaker: Dr Bernhard Adams (Incom, Inc.)
      • 18:30
        The LHCb trigger in Run II 2h
        The LHCb trigger system has been upgraded to exploit the real-time alignment, calibration and analysis capabilities of LHCb in Run-II. An increase in the CPU and disk capacity of the event filter farm, combined with improvements to the reconstruction software, mean that efficient, exclusive selections can be made in the first stage of the High Level Trigger (HLT1). For example, this permits, for the first time, lifetime unbiased charm and beauty selections. The overall output rate of HLT1 is increased by roughly a factor of two, to 150 kHz, which allows an increase in the efficiency for charm signals in particular. The output of HLT1 is buffered to the 5 PB of disk on the event filter farm, while the detector is aligned and calibrated in real time. The second stage, HLT2, performs complete, offline quality, event reconstruction. Physics analyses can be performed directly on this information, and for the majority of charm physics selections, a reduced event format can be written out, which permits higher event rates. Beauty hadron decays are more efficiently triggered by re-optimised inclusive selections, and the HLT2 output event rate is increased by a factor of three.
        Speaker: Emanuele Michielin (Universita e INFN, Padova (IT))
      • 18:30
        The Liquid Scintillator Study for JUNO 2h
        The Jiangmen Underground Neutrino Observatory (JUNO) is a multipurpose neutrino experiment designed to determine neutrino mass hierarchy and precisely measure oscillation parameters by detecting reactor neutrinos, observe supernova neutrinos, study the atmospheric, solar neutrinos and geo-neutrinos. The central detector will use a acrylic sphere with the diameter of 35.4 m and contain the 20 ktons of liquid scintillator. One of the big challenges is to produce the liquid scintillator with high light yield, long attenuation length and very low radioactive background. The R&D study on the high light yield liquid scintillator and several methods include optical and radioactive purification will be reported.
        Speaker: Tao Hu (IHEP,China)
      • 18:30
        The LiteBIRD Space Mission and the Search for Inflation at the Beginning of the Universe 2h
        Inflation is the leading theory to explain the first instant of the universe. The case for inflation is building, and now we may have the opportunity to observe the signature of gravitational waves from the inflation event embedded in the cosmic microwave background. If seen, these signals would confirm inflation, point to the correct model for inflation, and, given the high energies involved, teach us about fundamental physics such as quantum gravity and string theory. I will describe the LiteBIRD cosmic microwave background space mission which is currently in collaborative Phase A studies in both Japan and the U.S. LiteBIRD will use a 50 cm diameter telescope and a ~2000 detector focal plane cooled to 100 mK to probe degree and larger angular scales in polarization. It will measure the entire sky with ~2 microK*arcmin noise (150 GHz), and measure in 15 bands from 40 to 400 GHz to measure and subtract foregrounds. A rapidly spinning Half-Wave Plate will be used to rapidly “chop” between two polarization states. It will orbit at the second Lagrange point (L2).
        Speaker: Adrian Lee (University of California, Berkeley)
      • 18:30
        The MoEDAL Experiment at the LHC - a New Light on the TeV Discovery Frontier. 2h
        In 2010 the MoEDAL experiment at the Large Hadron Collider (LHC) was unanimously approved by CERN's Research Board to start data taking in 2015. MoEDAL is a pioneering experiment designed to search for highly ionizing avatars of new physics such as magnetic monopoles or massive (pseudo-)stable charged particles. Its groundbreaking physics program defines a number of scenarios that yield potentially revolutionary insights into such foundational questions as: are there extra dimensions or new symmetries; what is the mechanism for the generation of mass; does magnetic charge exist; what is the nature of dark matter; and, how did the big-bang develop. MoEDAL's purpose is to meet such far-reaching challenges at the frontier of the field. The innovative MoEDAL detector - that was installed for the first time in the winter of 2014-15 - employs unconventional methodologies tuned to the prospect of discovery physics. The largely passive MoEDAL detector, deployed at Point 8 on the LHC ring, has a dual nature. First, it acts like a giant camera, comprised of nuclear track detectors - analyzed offline by ultra fast scanning microscopes - sensitive only to new physics. Second, it is uniquely able to trap the particle messengers of physics beyond the Standard Model for further study. MoEDAL's radiation environment is monitored by a state-of-the-art real-time TimePix pixel detector array. A new MoEDAL sub-detector to extend MoEDAL reach to millicharged, minimally ionizing, particles (MMIPs) is under study. Results from MoEDAL test deployments are now available.
        Speaker: James Pinfold (University of Alberta (CA))
      • 18:30
        The Mu2E Experiment in the PIP-II Era 2h
        The two primary goals of an upgraded Mu2e experiment will be to provide at least an order of magnitude increase in the total number of stopped muons produced and to accommodate different stopping target materials to probe A and Z dependencies of muon conversion. The current Mu2e design uses an 8 GeV proton beam, while the proton economics of future Fermilab sources implies using an 800 MeV beam from the PIP-II Linac (not the Booster or Main Injector beams). The challenge is to find an accommodation to the future Fermilab program with as little change to the current Mu2e experimental setup and beamlines as possible. Considerations include appropriate time structures, the transport of beam into the production target and exiting the production solenoid, heating of coils, veto rates, acceptable live times, stopping muon rates, and backgrounds. We discuss studies initiated to address these issues and prospects for a PIP-II era upgrade.
        Speaker: Prof. Mary Anne Cummings (Muons, Inc.)
      • 18:30
        The New Herschel Forward Shower Counters for LHCb 2h
        Herschel ({\bf H}igh {\bf R}apidity {\bf S}hower {\bf C}ounters for \lhcb) is a new subdetector which has been installed for the LHCb experiment for Run II, the 13 TeV proton-proton LHC run starting in mid 2015. It consists of $ 60 \times 60~{\rm cm^2}$ square scintillator stations installed in the LHC tunnel symmetrically around the interaction region. The stations are designed to identify showers from high rapidity particles interacting with beam-pipe elements. The detector is equipped with sufficiently fast readout in combination with an FPGA system which allows it to contribute to the 40 MHz first level trigger in LHCb. The primary purpose is as a rapidity gap detector which complements the LHCb coverage to identify large rapidity gap events, of particular interest for Central Exclusive Production (CEP) processes. The scintillator planes are installed at distances of between 7.5 and 114~m and the challenge is to route to LHCb over this long distance and integrate into the experiment readout and trigger. It is particularly important to control spillover in the $25~{\rm ns}$ regime, as the small signals which constitute background to CEP events could be mimiced by spillover from inelastic interactions. Herschel is now fully installed and commissioned and shows an excellent performance which is already having an impact on the LHCb physics programme. The most recent results will be presented and future prospects discussed.
        Speakers: Paula Collins (CERN), Victor Coco (University of Cincinnati (US))
      • 18:30
        The phase 1 upgrade of the CMS pixel detector: qualification of barrel pixel detector modules 2h
        The CMS experiment at the LHC will substitute its pixel detector during the extended winter shutdown in 2016-17, with an upgraded detector which is now being built. An additional layer in the barrel region and an additional disk in each of the end caps is featured in the new geometry introduced by the phase 1 upgrade of the pixel detector. In order to withstand the higher rates of Runs 2 and 3 of the LHC, where instantaneous luminosities up to 2.0 x 10^34 cm-2 s-1 are expected, new digital readout chips and improved front-end electronics are introduced. The features of the upgraded detector are presented, along with a comparison and of its performance with respect to the current one. The production of the new Barrel pixel (BPix) detector modules is reviewed with a focus on the qualification process developed to assess the quality of the assembled modules produced. New BPix detector modules undergo performance and quality tests and calibrations in a temperature and humidity controlled environment, whose details will be presented, together with a description of the testing setups. Motivations for the choice of particular figures of merit to assess module quality will be given and a summary of results from the current status of the production of BPix modules for Phase I Upgrade will be presented.
        Speaker: Vittorio Raoul Tavolaro (Eidgenoessische Tech. Hochschule Zuerich (CH))
      • 18:30
        The physics of antineutrinos in DUNE and determination of octant and \delta_cp 2h
        We study the proficiency of the DUNE experiment, which will be the first beam based experiment to use a baseline longer than 1000 km and a wide band flux profile, to unmask the octant of the leptonic mixing angle $\theta_{23}$ i.e., to find out if $\theta_{23}$ is $< \pi/4$ or $>\pi/4$. The probability channels relevant for octant study are the muon neutrino survival probability $P_{\mu \mu}$ and the electron neutrino appearance probability $P_{\mu e}$. The first one is mainly responsible for the precision measurement but suffers from an inherent degeneracy between $\theta_{23}$ and $\pi/2 - \theta_{23}$ for baselines $< 1000$ km due to less matter effect. The appearance probability on the other hand contains octant sensitive terms to the leading order but the lack of knowledge of hierarchy and the CP phase $\delta_{CP}$ gives rise to degenerate solutions, affecting the sensitivity. It has been realized, in the context of the off-axis experiments T2K and \nova with baselines $< 1000$ km, that since for $P_{\mu e}$ and $P_{\bar{\mu} \bar{e}}$ the octant-$\delta_{CP}$ degeneracy occurs at different values of $\delta_{CP}$, combination of equal neutrino and antineutrino runs can help to resolve this. However, in regions where neutrinos do not have octant degeneracy, adding antineutrino runs spoil the octant sensitivity. In this work we examine in detail if, due to the broad-band beam and comparatively longer baseline of DUNE, the above conclusions are altered and how does that affect the octant sensitivity. We find that for the DUNE baseline of 1300 km, due to enhanced matter effect, the neutrino and antineutrino probabilities are different which creates a tension in the case of combined runs because of which (i) octant sensitivity can also come from disappearance channel (ii) addition of antineutrinos improve octant sensitivity even in the parameter space where neutrinos do not suffer from octant degeneracy. Thus in this case the equal amount of neutrino and antineutrino run may not turn out as the optimal combination. %for the case of normal hierarchy whereas due to matter %enhancement antineutrinos have a higher statistics for inverted hierarchy. In view of this we study the physics of antineutrinos in DUNE and investigate the best combination of neutrino-antineutrino run that is required to resolve octant degeneracy at specific confidence levels. We study this for two detector configurations -- (i) a 10 kt detector and (ii) a 34 kt detector and for different true values of $\theta_{23}$ and $\delta_{CP}$ and determine the ranges of parameters for which octant degeneracy can be resolved.
        Speaker: Mr Newton Nath (Physical Research Laboratory, Ahmedabad, India)
      • 18:30
        The potential of Two Higgs Doublet Models and other issues 2h
        The Two-Higgs Doublet Model (2HDM) potential may accommodate more than one minima at the tree-level, one of them being the electroweak (EW) minimum where the universe lives. We make a detailed study of the nature of the most general 2HDM potential, including one-loop corrections, and also focus on the stability issues of the EW vacuum. We also discuss the naturalness issues in the context of 2HDM and constrain the parameter space based on the naturalness argument.
        Speaker: Ms Indrani Chakraborty (University of Calcutta)
      • 18:30
        The readout system for the Fermilab Muon g-2 straw tracking detectors 2h
        The Fermilab Muon g-2 experiment will measure the anomalous magnetic moment of the muon to a precision of 140 parts per billion, which is a factor of four improvement over the previous E821 measurement at Brookhaven. The experiment will also extend the search for the muon’s electric dipole moment (EDM) by approximately two orders of magnitude with a sensitivity down to 10$^{-21}$ e.cm. Both of these measurements are made by an analysis of the modulation of the decay rate of the higher-energy positrons from the (anti-)muon decays recorded by 24 calorimeters and 3 straw tracking detectors. The straw tracking detectors will be used to cross-calibrate the calorimeter, identify pileup and muons lost from the storage region, and to measure the beam-profile. A tracker measurement of the up-down modulation of positrons will be used in the EDM analysis. In this poster, the readout electronics of the straw tracker will be described. The analogue signals from the straws are amplified, shaped and compared to a configurable threshold by bespoke ASDQ chips and the resulting signal is then passed to an FPGA-based TDC which records the straw hit time with a resolution of 0.6ns. The hits are then buffered and event records are created by FC7 and AMC-13 modules in a microTCA crate, which are then passed into the MIDAS event-builder and data acquisition system.
        Speaker: James Mott (Boston University)
      • 18:30
        The Recursive Jigsaw Reconstruction Technique 2h

        Signal events where multiple missing neutral particles are present in
        a final state represent challenging topologies to search for new
        physics at the LHC. The key to any search is the ability to separate
        background-like events from signal-like events. Identifying such
        signal-like events, and extracting their properties, is exacerbated by
        a lack of knowledge of the particle masses and some missing kinematic
        handles. The "Recursive Jigsaw" reconstruction technique introduces a new
        approach to extracting information in events with open final states resulting from
        pair-production of objects.

        We demonstrate sensitive analysis strategies to search for beyond standard model signatures by de-composing the final state objects into hemispheres and further sub-dividing them where necessary, based on the topology of interest. Backgrounds are controlled without recourse to conventional approaches based on variables such as missing transverse momentum and effective mass to select regions of sensitivity. Applications of the technique will be shown.

        Speaker: Paul Douglas Jackson (University of Adelaide)
      • 18:30
        The Silicon Micro-strip Upstream Tracker for the LHCb Upgrade 2h
        A comprehensive upgrade of the LHCb detector is foreseen for Long Shutdown 2 of the LHC. As part of the upgrade, the existing TT tracking station in front of the LHCb dipole magnet will be replaced by a new silicon micro-strip detector, the Upstream Tracker (UT). Similar to the TT, the UT will consist of four planar detection layers covering the full acceptance of the experiment. In total, the detector will use about 1000 silicon sensors. Most of these sensors will have 10 cm long readout strips with a pitch of $180 \mu\mathrm{m}$, a total width of 10 cm, and are foreseen to be produced in p-in-n technology. Sensors for the region of highest particle density in the centre of each detection layers will be produced in n-in-p technology and will have strips with a pitch of 90 $\mu\mathrm{m}$ and a length of 10 cm or 5 cm. Measurements on unirradiated and irradiated prototypes at test beams and in laboratory setups will be discussed. A new radiation-hard front end readout chip for the UT is being developed in 0.13 $\mu\mathrm{m}$ TSCM technology. It will incorporate 128 input channels with pre-amplifier, shaper and 6-bit ADC, will perform pedestal and common-mode subtraction, cluster finding and zero-suppression as well as data serialization. Measurements on an eight-channel prototype chip are ongoing and first results from these tests will be shown.
        Speaker: Marina Artuso (Syracuse University (US))
      • 18:30
        The Super-Kamiokande Gadolinium Project 2h
        The Super-Kamiokande Gadolinium (SK-Gd) Project is the upgrade of the SK detector via the addition of water-soluble gadolinium (Gd) salt. This modification will enable it to efficiently identify low energy anti-neutrinos. SK-Gd will pursue low energy physics currently inaccessible to SK due to backgrounds. The most important will be the world's first observation of the diffuse supernova neutrino background. In addition, Gd-loading has benefits for other physics, such as subtle features of supernova bursts, pre-supernovae, and reactor antineutrinos. On June 27 2015,the Super-Kamiokande Collaboration approved the SK-Gd project. The R&D program towards SK-Gd is being accelerated now. The instrumental setup, current status, and main physics topics of SK-Gd will be presented.
        Speaker: Hiroyuki Sekiya (University of Tokyo)
      • 18:30
        The SuperNEMO $\beta\beta$ source production 2h
        SuperNEMO takes advantage of the tracking calorimetry technique successfully launched by NEMO3. This technique reduces the backgrounds and allows for excellent discrimination of different $0\nu\beta\beta$ mechanisms. SuperNEMO can simultaneously observe different double beta emitters, $^{48}$Ca, $^{82}$Se and $^{150}$Nd are currently under consideration. The demonstrator will employ 7~kg of enriched $^{82}$Se shaped in thin foil installed in the center of the detector. The R&D for new techniques of foil fabrication will be described, focusing on materials choice and background reduction at the level of 2~$\mu$Bq/kg and 10~$\mu$Bq/kg for $^{208}$Tl and $^{214}$Bi respectively. New developments with innovative purification methods will also be discussed with the aim of comparing the radio-purities at a later stage.
        Speakers: Alberto Remoto (Laboratoire d'Anncecy-le-Vieux de physique des particules), Andrea Jeremie (Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP))
      • 18:30
        The SuperNEMO calorimeter 2h
        The SuperNEMO double beta decay project is a modular tracker-calorimeter based experiment that will reach a sensitivity to the neutrinoless double beta decay half-life of the order of $10^{26}$ years, corresponding to a Majorana neutrino mass of 50-100 meV. The main calorimeter is based on 520 Optical Modules made of large volume plastic scintillators (10L) coupled with large area photomultipliers (Hamamatsu R5912-Mod and R6594). They are assembled in walls that surround the isotope foil and the tracking volume. One of the main goals and challenges of the SuperNEMO detector developement programme was to reach an energy resolution, better than 8$\%$(FWHM)$/$$\sqrt{E(MeV)}$. The other challenge was to satisfy the radiopurity requirements for all the calorimeter materials. This poster will describe the calorimeter design, its performances and the status of its construction as the first module of SuperNEMO is now under construction and installation in LSM (Laboratoire Souterrain de Modane) underground laboratory.
        Speaker: Christine Marquet (CENBG/CNRS)
      • 18:30
        The SuperNEMO Light Injection \& Monitoring System 2h
        SuperNEMO is the successor of the NEMO-3 experiment and will search for the hypothetical process of $0\nu\beta\beta$ by combining tracking and calorimetric measurements. The SuperNEMO calorimeter consists of 712 optical modules made of scintillator blocks directly coupled to photomultiplier tubes. $^{207}$Bi sources will be used to calibrate the energy scale of the calorimeter in dedicated calibration runs separated by a few weeks. In between these runs, a Light Injection (LI) system will guarantee the stability of the calorimetric response to 1$\%$. The LI system injects pulsed LED light into each scintillator block via optical fibers. A reference optical module is used to monitor the light level against a $^{241}$Am source. This poster will describe in detail the LI system and its performance.
        Speaker: Thibaud LE NOBLET (LAPP)
      • 18:30
        The Timepix3 Telescope and LHCb Upgrade R&D measurements 2h
        The Vertex Locator (VELO) is the silicon detector surrounding the interaction region of the LHCb experiment. At the LHCb upgrade, planned for the LHC Long Shutdown 2, the VELO detector will be upgraded to a pixel system designed to withstand a radiation dose up to 370 MRad or $8\times 10^{15} $ 1 MeV n$_{eq}$ $cm^{-2}$. An additional challenge is the non uniform nature of the radiation damage, which results in requiring a guard ring design with excellent high voltage control. The Timepix3 telescope is a high rate, data driven beam telescope created to study the performance of sensor prototypes for the VELO upgrade. When testing VELO prototypes the readout is identical to the telescope; but a simple way to integrate triggers from other detectors is also provided, in a way that tracks can be synchronised offline. Examples of LHCb upgrade detectors which have been qualified with the Timepix3 telescope are the Upstream Tracker (UT), Scintillating Fibres (SciFi), Ring Imaging CHerenkov (RICH), and Time Of internally Reflected CHerenkov light (TORCH). The telescope was installed in the SPS North hall at CERN, profiting from beam time provided by the AIDA2020 program. The telescope consists of 8 planes with 300 $\mu m$ p-on-n silicon sensors read out by Timepix3 ASICs. Tracks measured with the telescope have excellent temporal (~1 ns) and spatial resolution (~2 $\mu m$). The telescope has been operated with a rate of tracks written to disk up to 5 MHz - limited only by conditions at the SPS; we expect a rate capability up to approximately 30 Mtracks/s. The telescope is assembled with 2 separate arms with 4 sensors on each arm. At the center, where the spatial resolution is best, Devices Under Test (DUT) can be installed. The remote operation of the central stage provides precise rotation and translations allowing detailed studies. In this presentation the main results on the Telescope performance will be shown such as track reconstruction efficiency and pointing resolution. A detailed comparison of the performance of the different VELO sensor prototypes produced by Micron semiconductors and Hamamatsu photonics will be presented. The evaluation programme of the prototypes includes studies to show the effects of radiation damage. The sensors were submitted to a few facilities and irradited to the maximum required fluence, mainly: JSI reactor neutrons in Ljubliana, mid energy (27 MeV) protons at KIT in Karlsruhe and high energy (24 GeV) protons from IRRAD at CERN. A collection of preliminary results from the other LHCb detector R&D programmes will be presented in order to show the adaptability and precision of the telescope. We also present the software framework used in the reconstruction and analysis of the telescope data. During the 2015 test beam campaigns, over 37 billion tracks were recorded, which requires a reconstruction software which is fast and easy to parallelise on a distributed computing system, such as the GRID. The software is based on the Gaudi framework used by many HEP experiments including LHCb. The framework allows for flexible integration of external users with the time-stamped triggers and can reconstruct more than 15,000 tracks per second.
        Speaker: Daniel Martin Saunders (University of Bristol (GB))
      • 18:30
        The track reconstruction software and performance studies of the Fermilab Muon g-2 straw tracking detectors 2h
        The Fermilab Muon g-2 experiment will measure the anomalous magnetic moment of the muon to a precision of 140 parts per billion, which is a factor of four improvement over the previous E821 measurement at Brookhaven. The experiment will also extend the search for the muon’s electric dipole moment (EDM) by approximately two orders of magnitude with a sensitivity down to 10$^{-21}$ e.cm. Both of these measurements are made by an analysis of the modulation of the decay rate of the higher-energy positrons from the (anti-)muon decays recorded by 24 calorimeters and 3 straw tracking detectors. The straw tracking detectors will be used to cross-calibrate the calorimeter, identify pileup and muons lost from the storage region, and to measure the beam-profile. A tracker measurement of the up-down modulation of positrons will be used in the EDM analysis. In this poster the methodology and algorithms being used to reconstruct tracks from the straw hits will be described and the physics performance of the algorithms will be demonstrated using Monte-Carlo generated data. The performance evaluated through an analysis of testbeam data taken with a prototype detector in 2015 will also be described. In this analysis the hit resolution of the detector was determined through a comparison with the hits recorded in an auxiliary silicon detector and is shown to be comfortably below the resolution required to reconstruct the trajectory of positrons with the accuracy required for the experiment.
        Speaker: Stuttard Tom (UCL)
      • 18:30
        Three-dimensional fragmentation function studies in $e^+e^-$ annihilation at high energies 2h
        After a brief description of the three-dimensional fragmentation functions defined via quark-quark correlator for hadrons with different spins (0, 1/2 and 1) at leading and higher twists, we discuss how to study them in hadron production processes in $e^+e^-$ annihilation. We first present the general framework to express the cross section in terms of the corresponding structure functions then give the parton model results for the differential cross sections and/or different spin asymmetries up to twist 3 in terms of gauge invariant fragmentations. The results can serve as a basis for experimental and phenomenological studies in this reaction. References [1] Kai-bao Chen, Wei-hua Yang, Shu-yi Wei and Zuo-tang Liang, “Tensor polarization dependent fragmentation functions and e+e-→VπX ”, in preparation (2016). [2] Kai-bao Chen, Wei-hua Yang, Shu-yi Wei and Zuo-tang Liang, “Three dimensional fragmentation functions from quark-quark correlator”, e-Print: arXiv:1505.02856 [hep-ph]. [3] Shu-yi Wei, Yu-kun Song, and Zuo-tang Liang, “Leading and higher twist contributions in semi-inclusive e+e- annihilation at high energies”, Phys. Rev. D91, 034015 (2015). [4] Shu-yi Wei, Yu-kun Song, and Zuo-tang Liang, “Higher twist contribution to fragmentation function in inclusive hadron production in e+e- annihilation”, Phys. Rev. D89, 014024 (2014).
        Speaker: Zuo-tang Liang (S)
      • 18:30
        Top quark event modelling and generators 2h

        State-of-the-art theoretical predictions accurate to next-to-leading order QCD interfaced with Pythia8 and Herwig++ event generators are tested by comparing the unfolded ttbar differential data collected with the CMS detector at 8 TeV. These predictions are also compared with the underlying event activity distributions in ttbar events using CMS proton-proton data collected in 2015 at a center of mass energy of 13 TeV.

        Speaker: Rahmat Rahmat (University of Iowa (US))
      • 18:30
        Treating jet correlations in high pile-up at hadron colliders 2h
        Experiments in the high-luminosity runs at the Large Hadron Collider face the challenges of very large pile-up. Primary techniques to deal with this are based on precise vertex and track reconstruction. Outside tracker acceptances, however, lie regions of interest for many aspects of the LHC physics program. We explore complementary approaches to pile-up treatment and propose a data-driven jet-mixing method which can be used outside tracker acceptances without depending on Monte Carlo generators. The method can be applied to treat correlation observables and take into account, besides the jet transverse momentum pedestal, effects of hard jets from pile-up.
        Speaker: Hans Van Haevermaet (University of Antwerp (BE))
      • 18:30
        Trigger level track reconstruction in CMS with a fully time-multiplexed architecture using a Hough transform implemented in an FPGA 2h

        A new tracking system is under development for operation in the CMS
        experiment at the High Luminosity LHC. It includes an outer tracker which
        will construct stubs, built by correlating clusters in two closely spaced
        sensor layers for the rejection of hits from low transverse momentum tracks,
        and transmit them off-detector at 40 MHz. If tracker data is to contribute
        to keeping the Level-1 trigger rate at around 750 kHz under increased
        luminosity, a crucial component of the upgrade will be the ability to
        identify tracks with transverse momentum above 3 GeV/c by building tracks
        out of stubs. A concept for an FPGA-based track finder using a fully
        time-multiplexed architecture is presented, where track candidates are
        identified using a projective binning algorithm based on the Hough
        Transform. A hardware system based on the MP7 MicroTCA processing card
        has been assembled, demonstrating a realistic slice of the track finder
        in order to help gauge the performance and requirements for a full system.
        This poster outlines the system architecture and algorithms employed,
        highlighting some of the first results from the hardware demonstrator
        and discusses the prospects and performance of the completed track finder.

        Speaker: Luigi Calligaris (STFC - Rutherford Appleton Lab. (GB))
      • 18:30
        Trigger Studies for the Mu2e Experiment 2h
        The Mu2e experiment at Fermilab aims to detect charged lepton flavor violation by observing neutrinoless muon-to-electron conversion in the field of an aluminum nucleus. Within the Mu2e apparatus, low-energy muons are captured in the atomic orbits in an aluminum stopping target. Isolating the desired excess of monoenergetic 105 MeV electrons will require precise suppression of primary background sources such as muon decay-in-orbit, radiative pion capture, and cosmic rays. An initial of selection will be required in the form of a trigger. The minimal Standard Model extension allowing for neutrino oscillations necessarily includes such lepton flavor-violating transitions as μ→e in the charged lepton sector, but the predicted amplitude of these decays is dramatically suppressed by the W± mass to a branching fraction of less than 10^-50 . Many favored BSM theories, however, including SUSY with R-parity violation, new gauge bosons, large extra dimensions or a non-minimal Higgs sector, predict rates for charged lepton flavor violating (CLFV) processes as large as 10^-14. Mu2e expects to achieve a single event sensitivity of 3 x 10^-17 in the muon-to-electron conversion rate, an improvement by four orders of magnitude over previous experiments. Any detectable sign of CLFV at this regime will be incontrovertible evidence of new physics. In this poster we describe initial performance tests in the development of a Mu2e trigger. These tests use recently-created event samples that include improved geometry and background information. A rejection factor of approximately 10^2 with a per-event timing of under 14 ms will be required for the experiment to operate within the allowed data budget.
        Speaker: Mariel Pettee (Yale University)
      • 18:30
        Tuning effect in particle masses and nuclear data 2h
        Recent analysis of nuclear binding energies and nuclear excitations of the broad scope of nuclei allowed a conclusion that there exists a discreteness in both values with stable mass/energy intervals coinciding or rationally connected with charge mass splitting of the nucleon $\delta m_N$=1293.3~keV and the lepton $m_e$=511~keV. For example, periods $\delta m_N$/8=161~keV and $m_e$/3=171~keV were observed in excitations of near-magic nuclei $^{odd}$Sb (Z=51, numbers of the period n=1,2,3,4,5,6) and $^{101,133}$Sn (Z=50, N=51,83, n=1,5,8). In neighbour nuclei $^{116,117,118}$Sn and $^{113}$In phonon-like excitations with values close to $\delta m_N$ and $2m_e$=$\varepsilon_o$ were found in first excitations, as well as many stable intervals D=511~keV, 1533~keV and 2045~keV ($m_e$, 3$m_e$, 4$m_e$) - in all 183 levels of $^{113}$In. Similar groupings of excitations at $\delta_N$ and $\varepsilon_o$ was reported in sum distribution for all nuclei [1]. Such tuning effect in nuclear data could be considered together with the empirical tuning effect in particle masses which consisted in rational relations between mass-values of the muon, pion, nucleon and standard (in NRCQM) estimations of the constituent quark masses $m_{\rho}$/2 and $m_{\Xi}$/3 [2.3]. We use evaluation by CODATA [4] of the ratio 1838.6836605(11) between masses of the neutron and electron for determination of the shift of the neutron mass $\delta m_n$=161.65(6) keV relative to the integer number of the electron rest mass, namely 115$\delta$ - $m_e$ where the parameter $\delta$=16$m_e$ was introduced in 70-ties as a common period in particle masses (close to double value of the pion $\beta$-decay energy [3,5]). The value $\delta m_n$=161.65(6) keV forms the ratio 8$\times$1.001(1) with the nucleon mass difference $\delta m_N$. This exact relation could be considered as important confirmation of the common tuning effect in particle masses and nuclear excitations (was considered in [3]). \\ \noindent 1. H.Schopper (Ed.), Landolt-Boernstein New Series, vols. I/25 A-E. Springer, 2012-2013.\\ 2. S.I.Sukhoruchkin, Statistical Properties of Nuclei, p. 215. Plenum Press, 1972. \\ 3. S.I.Sukhoruchkin, PoS (EPS-HEP2015) 527.\\ 4. P.Mohr, B.Naylor, D.B.Neeell, CODATA, Rev. Mod. Phys. 84, 1527 (2012).\\ 5. S.I.Sukhoruchkin, Neutron Cros. Sect., Washington, 1968, Vol.2, p.923. \\
        Speaker: Dr Sergey Sukhoruchkin (Petersburg Nuclear Physics Institute)
      • 18:30
        Tuning microwave cavities with biased nonlinear dielectrics for axion searches 2h
        The axion is a proposed solution to the strong CP problem and is a dark matter candidate. The search for dark matter axions may be aided by haloscopes: tunable, passive, high-Q microwave resonators, placed inside multi-tesla magnetic fields and operating at cryogenic temperatures. (The Axion Dark Matter eXperiment, ADMX, is an example of this technique.) In the presence of strong B-fields, axions may couple to two photons, which in turn may be detected through the resonant excitation of the high-Q microwave cavity and subsequent low-noise amplification and readout. There are points of common interest, then, between experiments like ADMX and the particle accelerator technology community. We discuss one such point here. Axion searches above ~1 GHz will employ multiple resonators locked to the same frequency. Fine tuning of individual resonators may be accomplished using thin films of strontium titanate (STO) and related materials, whose dielectic strength can be varied through DC voltage bias.
        Speaker: Daniel Bowring (FNAL)
      • 18:30
        Unitarity and the three flavour neutrino mixing matrix. 2h
        Unitarity is a fundamental property of any theory required to ensure we work in a theoretically consistent framework. In comparison with the quark sector, experimental tests of unitarity for the 3x3 neutrino mixing matrix are considerably weaker. We perform a reanalysis to see how global knowledge is altered when one refits oscillation results without assuming unitarity, and present 3σ ranges for allowed UPMNS elements consistent with all observed phenomena. We calculate, for the first time, bounds on the closure of the six neutrino unitarity triangles, with the closure of the νeνμ triangle being constrained to be ≤ 0.03, while the remaining triangles are significantly less constrained to be ≤ 0.1 - 0.2. Similarly for the row and column normalization, we find their deviation from unity is constrained to be ≤ 0.2 - 0.4, for four out of six such normalisations, while for the νμ and νe row normalisation the deviations are constrained to be ≤ 0.07, all at the 3σ CL. We emphasise that there is significant room for new low energy physics,especially in the ντ sector which very few current experiments constrain directly. see arXiv:1508.05095
        Speaker: Mark Ross-Lonergan (U of Durham)
      • 18:30
        Upgrade of the CMS muon trigger system in the barrel region 2h
        To continue triggering with the LHC Run-1 performance in the LHC’s Run-2 the Level-1 Trigger of the Compact Muon Solenoid experiment underwent a significant upgrade. One part of this upgrade was the reorganisation of the muon trigger path from a subsystem-centric view in which hits in the Drift Tubes (DT), the Cathode Strip Chambers (CSC), and the Resistive Plate Chambers (RPC) were treated separately in dedicated track-finding systems to one in which complementary detector systems for a given region (barrel, overlap, and endcap) are merged at the track-finding level. This in turn required the development of a new system to sort as well as cancel-out the muon tracks found by each system. An overview will be given of the new Track-finder system for the barrel region, the Barrel Muon Track Finder (BMTF) as well as the cancel-out and sorting layer, the upgraded Global Muon Trigger (uGMT). Both the BMTF and uGMT are implemented in a Xilinx Virtex-7 card utilizing the uTCA architecture. While the BMTF improves on the proven and well-tested algorithms used in the Drift Tube Track Finder during Run-1, the uGMT is an almost complete re-development due to the re-organisation of the underlying systems from complementary track finders to regional track finders. Additionally the uGMT calculates a muon’s isolation using energy information received from the calorimeter trigger. This information is added to the muon objects forwarded to the Global Trigger. Finally, first results of the muon trigger performance in the barrel region will be shown.
        Speaker: Dinyar Rabady (Austrian Academy of Sciences (AT))
      • 18:30
        WZ production cross section in pp collisions at $\sqrt{s}$ = 7, 8 and 13 TeV in CMS in 3$\ell\nu$ final state 2h
        The inclusive cross section for WZ production is measured in proton-proton collisions at a centre-of-mass energy of 7, 8 and 13 TeV with the CMS experiment at the LHC using the data samples collected in Run I, 2015 and the first data collected in 2016. The measurement is performed with events containing exactly three charged leptons, with an opposite-sign same-flavour pair. Background estimates are obtained using data driven techniques as much as possible and a cut-and-count method is used for the final measurement.
        Speaker: Nacho Suarez Andres (Universidad de Oviedo (ES))
    • 09:00 10:30
      Higgs, Top and Electroweak Physics Chicago Ballroom

      Chicago Ballroom

      • 09:00
        Higgs Measurements (25' + 5') 30m Chicago Ballroom

        Chicago Ballroom

        Speaker: Florencia Canelli (Universitaet Zuerich (CH))
      • 09:30
        Top and Electroweak measurements (25' + 5') 30m Chicago Ballroom

        Chicago Ballroom

        Speaker: Ulla Blumenschein (Georg-August-Universitaet Goettingen (DE))
      • 10:00
        Interpretations of results, outlook and new ideas (25' + 5') 30m Chicago Ballroom

        Chicago Ballroom

        Speaker: Heather Logan (Carleton University)
    • 10:30 11:00
      Break 30m
    • 11:00 12:30
      Beyond the Standard Model Chicago Ballroom

      Chicago Ballroom

      • 11:00
        Searches for SUSY (25' + 5') 30m Chicago Ballroom

        Chicago Ballroom

        Speaker: Wolfgang Adam (HEPHY-Vienna)
      • 11:30
        Exotica searches (25' + 5') 30m Chicago Ballroom

        Chicago Ballroom

        Speaker: Shih-Chieh Hsu (University of Washington Seattle (US))
      • 12:00
        Interpretations of results, outlook and new ideas (25' + 5') 30m Chicago Ballroom

        Chicago Ballroom

        Speaker: Kiwoon Choi
    • 12:30 12:55
      1' Elevator Speeches by 20 Young Scientists 25m Chicago Ballroom

      Chicago Ballroom

      Speakers: Lauren Alexandra Tompkins (Stanford University (US)), Sarah Marie Demers Konezny (Yale University (US))
    • 12:55 14:15
      Lunch 1h 20m
    • 13:20 14:05
      Lunch & Learn - Making science fun and exciting through social media 45m Chicago Ballroom

      Chicago Ballroom

      Social media channels are vital for outreach and offer huge opportunities for scientists to directly engage with the public using nontraditional methods – including lots of creativity and humor. The physics community’s presence is growing more significant, and this session (designed for early career researchers ) will provide a lively discussion with experts in the domain. We’ll cover how to best use social media to raise public awareness of science, share excitement and progress, and cultivate support from followers. We’ll also discuss some of the thornier issues in social media, such as capturing the complexity of both the scientific process and the science itself.

      Presenters:
      Biron, Lauren (Fermilab)
      Cowern, Dianna (Physics Girl)
      Haffner, Julie (CERN)
      Nellis, Clara (IN2P3)

      Speaker: Arnaud Marsollier (CERN)
    • 14:15 16:00
      Flavor Physics Chicago Ballroom

      Chicago Ballroom

      • 14:15
        Results and prospects on bottom physics (20' + 5') 25m Chicago Ballroom

        Chicago Ballroom

        Speaker: Vincenzo Vagnoni (Bologna)
      • 14:40
        Charm/Strange: results and future prospects (20' + 5') 25m Chicago Ballroom

        Chicago Ballroom

        Speaker: Gagan Mohanty (Tata Institute)
      • 15:05
        Charged lepton: results and future prospects (20' + 5') 25m Chicago Ballroom

        Chicago Ballroom

        Speaker: Ryu Sawada (University of Tokyo (JP))
      • 15:30
        Probing Supersymmetry/BSM through Flavor Physics (25' + 5') 30m Chicago Ballroom

        Chicago Ballroom

        Speaker: Shaaban Khalil Ibrahim (ENHEP Egyptian Network of High Energy Physics (EG))
    • 16:00 16:30
      Break 30m
    • 16:30 18:00
      LQCD, Formal Theory, Outreach & Diversity Chicago Ballroom

      Chicago Ballroom

      • 16:30
        Lattice QCD Developments (25'+5') 30m Chicago Ballroom

        Chicago Ballroom

        Speaker: Ruth Van de Water (Fermilab)
      • 17:00
        Formal Theory Developments (15'+5') 20m Chicago Ballroom

        Chicago Ballroom

        Speaker: Clay Cordova (IAS)
      • 17:20
        Data-driven Insights into Science Advocacy (15'+5') 20m Chicago Ballroom

        Chicago Ballroom

        Speaker: Christopher Volpe (ScienceCounts Inc.)
      • 17:40
        Diversity and Inclusion (15'+5') 20m Chicago Ballroom

        Chicago Ballroom

        Speaker: Zeblon Vilakazi (U. Witwatersrand)
    • 18:30 20:00
      Public lecture: The Detection of Gravitational Waves from Binary Black Hole Mergers 1h 30m Chicago Ballroom

      Chicago Ballroom

      Einstein predicted the existence of gravitational waves 100 years ago. They have recently been detected by the Laser Interferometer Gravitational-wave Observatory (LIGO). The physics of gravitational waves, the detection technique, the observations and their implications will all be discussed.
      Speaker: Barry Barish (Caltech)
    • 08:30 09:50
      Young Scientists Awards, IUPAP-C11/ICFA Reports Chicago Ballroom

      Chicago Ballroom

    • 09:50 10:20
      Break 30m
    • 10:20 12:00
      Strong Interactions, Hadron Physics & Heavy Ions Chicago Ballroom

      Chicago Ballroom

    • 12:00 12:15
      1' Elevator Speeches by 20 Young Scientists 15m Chicago Ballroom

      Chicago Ballroom

      Speaker: Sarah Marie Demers Konezny (Yale University (US))
    • 12:15 13:30
      Lunch 1h 15m
    • 12:30 13:20
      DOE - PI Meetings: DOE/HEP General Presentation (FOA, budgets, etc.) Chicago Ballroom

      Chicago Ballroom

    • 13:30 15:35
      Dark Matter, Astro-particle & Cosmology Chicago Ballroom

      Chicago Ballroom

    • 15:35 16:10
      Where do we go from here? Vision & Outlook 35m Chicago Ballroom

      Chicago Ballroom

      Speaker: Ian Shipsey (University of Oxford (GB))
    • 16:10 16:30
      Farewell 20m Chicago Ballroom

      Chicago Ballroom

      Speaker: Young-Kee Kim (University of Chicago (US))