Conveners
Parallel session: 6 A Particle Physics Session
- Sergei Voloshin (Wayne State University)
Parallel session: 5 B Heavy Ion Physics Session
- Maria Vasileiou (National and Kapodistrian University of Athens - Faculty of Physics)
Parallel session: 5 A Particle Physics Session
- Viktor Riabov (Petersburg Nuclear Physics Institut (RU))
Parallel session: 6 A Particle Physics Session
- Oleg Lebedev
Parallel session: 5 A Particle Physics Session
- Vladimir Gligorov (Centre National de la Recherche Scientifique (FR))
Parallel session: 5 A Particle Physics Session
- Walter Marcello Bonivento (INFN Cagliari)
Parallel session: 4 A Particle Physics Session
- Nicolas Berger (Centre National de la Recherche Scientifique (FR))
Parallel session: 6
- Wim De Boer (KIT - Karlsruhe Institute of Technology (DE))
Parallel session
- Vladimir Kekelidze (Joint Inst. for Nuclear Research (RU))
Parallel session: 5
- Silvio Donato (Universitaet Zuerich (CH))
Parallel session: 5 A Particle Physics Session
- Sergei Voloshin (Wayne State University)
Parallel session: 6
- Andre Sopczak (Czech Technical University (CZ))
Parallel session
- There are no conveners in this block
Parallel session: 3
- Roberto Martinez (Universidad Nacional de Colombia)
Parallel session: 4
- Albert De Roeck (CERN)
Parallel session: 5 Joint Quantum Session
- There are no conveners in this block
Parallel session: 6 Joint Quantum Session
- There are no conveners in this block
Parallel session: 6
- Elena Luschevskaya (State Scientific Center of Russian Federation - Institute of Theoretical and Experimental Physics)
Parallel session: 1 A Particle Physics Session
- Christophe Royon (The University of Kansas (US))
Parallel session: 5 A Particle Physics Session
- Steven Laurens Manly (University of Rochester (US))
Parallel session: 4 D Astroparticle, Cosmology, Gravity, Math Phys
- Sergey Godunov (ITEP)
Parallel session: 6
- There are no conveners in this block
Parallel session: 3
- There are no conveners in this block
Parallel session: 6
- Marios Petropoulos (Centre National de la Recherche Scientifique (CNRS))
Parallel session: 5 B Heavy Ion Physics Session
- Claudio Ciofi degli Atti
Parallel session: 4
- Kyrill Bugaev (Bogolyubov Institute for Theoretical Physics, Kiev, Ukraine)
Parallel session: 4 A Particle Physics Session
- Nikos Mavromatos (University of London (GB))
Parallel session: 3
- Emilian Dudas (Ecole Polytechnique)
Parallel session: 6 A and C
- Georgios Pavlos (Democritus University of Thrace)
Parallel session
- Peter Minkowski (Universitaet Bern (CH))
Parallel session: 3 A Particle Physics Session
- There are no conveners in this block
Parallel session
- Luis Gonzalez-Mestres (John Naisbitt University)
Parallel session: 4 A Particle Physics Session
- There are no conveners in this block
Parallel session
- Erik Adli (University of Oslo (NO))
Parallel session: 5
- There are no conveners in this block
Parallel session: 2 B Heavy Ion Physics Session
- Ivan Kisel (Johann-Wolfgang-Goethe Univ. (DE))
Photon and electron identifications are a crucial input to many ATLAS physics analysis.
The identification of prompt photons and the rejection of background coming mostly from photons from hadron decays relies on the high granularity of the ATLAS calorimeter.
The electron identification used in ATLAS for run 2 is based on a likelihood discrimination to separate
isolated electron candidates...
Resonance production in Pb-Pb collisions measured with the ALICE detector at the LHC
V. Riabov for the ALICE Collaboration
Hadronic resonances are very useful in exploring various aspects of heavy-ion collisions. Due to their short lifetimes, yields of resonances measured via hadronic decay channels can be affected by particle rescattering and regeneration in the hadronic gas phase. The...
A search for new physics in events with jets, b-tagged jets, missing transverse momentum, and 0-leptons, corresponding to an integrated luminosity of 35.9 fb−1 collected by the CMS experiment at √s = 13 TeV, is presented. No significant excess of events above the standard model background expectation is observed. Results are interpreted in terms of a number of simplified supersymmetry models,...
Heavy quarks (charm and beauty) are a powerful tool to study the properties of the Quark-Gluon Plasma (QGP), the hot and dense medium formed in high-energy heavy-ion collisions. Due to their large masses, heavy quarks are produced in hard partonic scattering processes in the initial stages of the collision. Therefore, they experience the whole system evolution interacting with the medium...
Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. This talk summarises recent ATLAS results on inclusive searches for supersymmetric squarks and gluinos, including third generation squarks produced in the decay of gluinos, and considering both R-parity conserving and R-Parity violating SUSY scenarios....
The ALICE experiment has measured the production of identified light-flavour hadrons in p-Pb and Pb-Pb collisions at 5.02 TeV in a wide range of transverse momentum (pT ). The newest ALICE results on pion, kaon and proton transverse momentum spectra, yield ratios and nuclear modification factors will be presented and discussed in comparison to lower energy results and hydrodynamical models. In...
Many supersymmetry models feature gauginos and also sleptons with masses less than a few hundred GeV. These can give rise to direct pair production rates at the LHC that can be observed in the data sample recorded by the ATLAS detector. The talk presents results from searches for gaugino and slepton pair production in final states with leptons or long-lived particles, using the data collected...
The measurement of the mixing-induced CP-violating phase phi_s in the Bs-Bsbar system is one of the key goals of the LHCb experiment. It has been measured at LHCb exploiting the Run I data set and using several decay channels. In particular, the most recent Run I results have been obtained analyzing Bs0->J/psi(->mu+mu-) K+K- candidates in the mass region above the phi(1020) resonance and Bs0...
Particles containing heavy quarks are produced in LHC pp collisions at 7, 8, and 13 TeV and constitute an excellent laboratory to test the Standard Model and probe for New Physics effects. Recent results by the CMS Collaboration on heavy flavor production and properties are reported.
We consider a non-ideal hot pion gas with the dynamically fixed number of particles in the model with the $\lambda\phi^4$ interaction. The effective Lagrangian for the description of such a system is obtained after dropping the terms responsible for the change of the total particle number. Reactions $\pi^+\pi^-\leftrightarrow\pi^0\pi^0$, which determine the isospin balance of the medium, are...
The Belle II experiment at the asymmetric $e^+e^−$ SuperKEKB collider is a major upgrade of the Belle experiment, which ran at the KEKB collider at the KEK laboratory in Japan. The design luminosity of SuperKEKB is $8×10^{35}$ cm$^{−2}$ s$^{−1}$, which is about 40 times higher than that of KEKB. The expected integrated luminosity of Belle II is 50 ab$^{−1}$ in five years of running. The...
The width of $f_1 (1285) \to e^+e^-$ decay is calculated in the vector meson dominance model. The result depends on the relative phase between two coupling constants describing $f_1 \to \rho^0\gamma$ decay. The $\Gamma (f_1 \to e^+e^-)$ is estimated to be $\simeq 0.07 \div 0.19$ eV. Direct $f_1$ production in $e^+e^-$ collisions is discussed, and the $e^+e^- \to f_1\to a_0 \pi \to \eta \pi...
Experimental results on top-quark physics obtained at the CMS experiment are reported based on the data recorded at centre-of-mass energy up to 13 TeV. Inclusive and differential cross sections for both top-quark pair and single top-quark production are presented, as well as measurements of top-quark properties in production and decay, and searches for anomalous couplings. The presented...
We develop a quantum scattering theory with the different wave packets: coherent states, Schroedinger cats, vortex beams with orbital angular momentum, Airy beams, etc. Examples from QED, QCD and potential scattering on atoms are treated. A phase-space picture of the quantum scattering (via the Wigner functions) is developed and a contribution of possible negativity of the incoming packets'...
Outline of the talk is:
• QCD vacuum, QCD instanton vacuum [1].
• Instanton Liquid Model (ILM) vs Dyons Liquid Model (DLM) [2].
• Gluons in the ILM. Pobylitsa Eq. [3] for the gluon propagator in the ILM.
Dynamical gluon mass.
• Heavy quarks $Q$ in the ILM [4]. $Q\bar Q$-potential within the ILM.
• Heavy and light quarks in the ILM [5].
• Heavy quark light mesons interactions [6].
•...
KamLAND-Zen is the neutrinoless double beta decay experiment using 136Xe in the 1,000ton ultra pure liquid scintillator KamLAND. The observation of the neutrinoless double beta decay would help our understanding of neutrino mass and hierarchy by demonstrating the Majorana particle. KamLAND-Zen 400 was ended successfully in 2015. We measured the 136Xe double beta decay life time precisely, and...
The 760 ton liquid argon ICARUS T600 detector performed a successful three-year physics run at the underground LNGS laboratories, studying neutrino oscillations with the CNGS neutrino beam from CERN, and searching for atmospheric neutrino interactions in cosmic rays. A sensitive search for LSND like anomalous nu_e appearance was performed, contributing to constrain the allowed parameters to a...
The reconstruction and calibration of jets in ATLAS is a critical component in producing precise analyses, whether precision measurements or searches for new physics. This talk describes the steps involved in deriving the jet energy scale (JES) and presents the results. Calibrations and their uncertainties are shown using the full 2015 + 2016 datasets. The study of jet substructure has also...
DM production in proton-proton collisions can be probed at the LHC by looking for missing energy signatures. We present an overview of the results from DM searches performed with the CMS experiment using proton—proton collision data collected during LHC Run 2 at a center of mass energy of 13 TeV. Signatures investigated include those yielding energetic jets and large missing transverse...
TBA
After the discovery of the Higgs boson, the measurement of its coupling properties are of particular importance. In this talk measurement of the cross sections and couplings of the Higgs boson in bosonic decay channels with the ATLAS detector are presented.
((W Mass - STDM-2014-18, Z3D (W/Z precision 7 TeV - STDM-2012-20, W+jets 8 TeV - STDM-2016-14 , Z+1jet 8TeV - STDM-2016-11, kt splitting scales - STDM-2015-14, Z+jets 13TeV STDM-2016-01)
The electroweak sector of the Standard model can be tested by precision measurements of its fundamental parameters, such as the W boson mass or the electroweak mixing angle. In this talk, we present the...
It is nowadays theoretically understood that in Quantum Mechanics (QM) the exponential decay is only an approximation. Deviations have been experimentally measured both at short and at long times. In turn, the non-exponential decay is responsible of the (also measured) Quantum Zeno Effect. Yet, an interesting open question, presented in this talk, is the emergence of non-exponential decay in...
K->pinunu 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 the K+->pi+nunu decay with 10% precision. NA62 took data in 2015 and 2016 reaching the Standard Model sensitivity. The status of the experiments will be reviewed, and prospects...
Faraday introduced electric field lines as a powerful tool for understanding the electric force, and field lines are still used today in classrooms and textbooks teaching the basics of electromagnetism within the electrostatic limit. However, despite attempts at generalizing this concept beyond the electrostatic limit, there is currently no field line theory that can be consistent with the...
The NA48 at CERN has recently published a limit on the presence of heavy neutrinos from decays of charged kaons into a pion and muons. The following NA62 experiment at CERN collected a large sample of charged kaon decays in flight with a minimum bias trigger in 2007. Upper limits on the rate of the charged kaon decay into a muon and a heavy neutral lepton (HNL) obtained from this data are...
Recent LHC results on the appearance of sub-leading flow modes in PbPb collisions at 2.76 TeV, related to initial-state fluctuations, are analyzed and interpreted within the HYDJET++ model. Using the newly introduced Principal Component Analysis (PCA) method applied to two-particle azimuthal correlations extracted from the model calculations, the leading and the sub-leading flow modes are...
The ATLAS experiment aims at recording about 1 kHz of physics collisions, starting with an LHC design bunch crossing rate of 40 MHz. To reduce the massive background rate while maintaining a high selection efficiency for rare physics events (such as beyond the Standard Model physics), a two-level trigger system is used. Events are selected based on physics signatures such as presence of...
The BCS model is revisited and it is shown that the phenomenology predicted by it is much richer than it was thought before. I will show in realistic situations that the phase transition from the superconducting state to the normal (metal) state may be of the first order (the energy gap may have a jump at the phase transition), there may be two solutions for the energy gap equation, etc.
I...
We propose a new SU(3)_CxSU(2)_LxU(1)_YxU(1)_X gauge model which is non universal respect to the three fermion families of the Standard Model. We introduce additional one top-like quark, two bottom-like quarks, three right handed neutrinos and two charged leptons in order to have an anomaly free theory. We also consider additional three right handed neutrinos which are singlets respect to the...
In this talk, we will give an overview of the recent forward physics measurements performed with the CMS detector at the LHC.
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 with the ATLAS detector at the LHC are presented. Measurements of top quark spin observables in...
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 less than or around one TeV can also give rise to direct pair production rates at the LHC that can be observed in the data sample recorded by the ATLAS detector. The talk...
Recent results of Standard Model physics using data recorded by the CMS detector are presented. This overview includes the latest electroweak and QCD results. In particular precise measurements of the inclusive and differential cross sections for W and Z boson productions, results on V+jets production with light and heavy flavours, multiboson measurements and anomalous couplings searches and...
With the advent of 13 TeV collisions and the start of Run 2 of the LHC, the potential to directly observe new particles produced in pairs has been greatly increased. This presentation will discuss a recent search from the ATLAS collaboration searching for pair production of new particles using the Run 2 dataset.
Many extensions of the Standard Model (SM) include particles that are neutral, weakly coupled, and long-lived that can decay to final states containing several hadronic jets. Long-lived particles (LLPs) can be detected as displaced decays from the interaction point, or missing energy if they escape. ATLAS and CMS have performed searches at the LHC and significant exclusion limits have been set...
A search for new physics in events with low-momentum, opposite-sign leptons and moderate missing transverse momentum, using 35.9 1/fb of integrated luminosity collected by the CMS experiment at √s = 13 TeV, is presented. The observed data is consistent with the expectation from the standard model. The results are interpreted in terms of pair production of charginos and neutralinos with nearly...
Quantum key distribution (QKD) allows two remote parties, Alice and Bob, to obtain symmetric keys – random but correlated sequence of bits – by exchanging quantum states [1]. The security relies on the fact that an adversary Eve cannot eavesdrop without introducing noticeable errors. However, due to gaps existing between theory and practice, it is often possible for an eavesdropper, Eve to...
Quantum mechanics is based or formulated on postulates. The first postulate states that the state of quantum mechanics system is defined by the wave function. The Schrödinger equation has the form of a differential equation describing the evolution process of the function. Dirac equation is derived on the base of that postulate of wave function evolution in addition to Dirac’s proposed...
We will first describe how we can constrain the structure of the Pomeron in terms of quarks and gluons using diffractive data at the LHC using proton tagging. We will then study the sensitivity to extra dimensions or composite Higgs models at the LHC via quartic anomalous couplings between photons, Z and W bosons. Tagging protons at the LHC allows us to obtain the best possible reaches at the...
During the data-taking period at LHC (Run-II), several searches for supersymmetric particles were performed. The results from
searches by the ATLAS collaborations are concisely reviewed. Model-independent and model-dependent limits on new particle production are set, and interpretations in supersymmetric models are given.
One of the principal obstacles on the way to quantum computers is the lack of distinguished basis in the space of unitary evolutions and thus the lack of the commonly accepted set of basic operations (universal gates). A natural choice, however, is at hand: it is provided by the quantum R-matrices, the entangling deformations of non-entangling (classical) permutations, distinguished from the...
We simulate lattice QCD with two flavors at imaginary baryon chemical potential.
We use results for the baryon number density computed in the confining and deconfining phases at imaginary baryon chemical potential to determine the baryon number density and higher cumulants as well as the phase transition line at real chemical potential.
Low energy phenomena have been studied in detail at the LHC, providing important input for improving models of non-perturbative QCD effects. The ATLAS collaboration has performed several new measurements in this sector, which will be discussed. In particular, we present studies on the correlated hadron production, as they are an important source for information on the early stages of hadron...
Recent results from T2K will be presented.
Neutrinoless double beta decay might be our only window to observe lepton number violation. Most extensions of the Standard Model predict that neutrinos are Majorana particles and in this case neutrinoless double beta decay will exist. The talk discusses the motivation and experimental programs in this field with special emphasis on experiments using Ge-76. The latter have the lowest...
We review briefly lattice measurements of entanglement entropy in SU(3) Yang-Mills theory, following mostly the paper E. Itou et al., PTEP 2016 (2016) no.6, 061B01. We confront qualitative features emerging from the measurements with theoretical predictions based on field theory and holographic models.
The MURAVES (MUon RAdiography of VESuvius) project is a joint activity of the University of Naples and Florence, INGV and INFN. The collaboration, following the experience gained within the previous R&D INFN project MURAY, is currently completing the production of a robust four square meter low power consumption detector to be installed on the flanks of mount Vesuvius (Italy). The detector...
The AEgIS (Antimatter Experiment: gravity, Interferometry, Spectroscopy) is a CERN based experiment with the central aim to measure directly the gravitational acceleration of antihydrogen. Antihydrogen atoms will be produced via charge exchange reactions which will consist of Rydberg-excited positronium atoms sent to cooled antiprotons within an electromagnetic trap. The resulting Rydberg...
Measurements of the cross sections of the production of two and three 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 new measurements of integrated and differential cross sections of the production of heavy...
Lepton flavour is a conserved quantity in the standard model of particle physics, but it does not follow from an underlying gauge symmetry. After the discovery of neutrino oscillation, it has been established that lepton flavour is not conserved in the neutral sector. Thus the lepton sector is a great place to look for New Physics, and in this perspective the Charged Lepton Flavour Violation...
Double Chooz is a reactor antineutrino disappearance experiment located in Chooz, France, to measure the neutrino mixing angle $\theta_{13}$. By detecting the unique inverse beta decay (IBD) prompt-delayed signal antineutrinos can be precisely identified. The experiment consists of two liquid scintillator detectors of identical design; a far detector at a distance of about 1 km is operating...
We investigate the effect of the electromagnetic field generated in relativistic heavy-ion collisions on the suppression of ϒ mesons. The electromagnetic field is calculated using a simple model which characterises the emerging quark–gluon plasma (QGP) by its conductivity only. A numerical estimate of the field strength experienced by ϒ mesons embedded in the expanding QGP and its consequence...
We calculate the magnetic moments of the $\rho^{\pm}$ and $K^{*\pm}$ mesons using background field method in lattice quantum chromodynamics. The magnetic dipole polarizability and hyperpolarizability have been obtained for the $\rho^{\pm}$ meson for an every spin projection on the field direction.
Direct photons have long been considered as golden probes to study the properties of the Quark Gluon Plasma (QGP). They do not interact strongly with the medium and are produced at all stages of the collision, hence carrying information of the entire evolution of the system to the detectors. The PHENIX experiment discovered a large excess of low $p_{T}$ photons in Au+Au collisions at...
Since December 2010 the CMD-3 and SND detectors detectors collect data at the VEPP-2000 electron-positron collider. In 2013-2015 the injection facility of the collider has undergone an upgrade of the injection system. The new BINP injection complex has been connected to the VEPP-2000 collider, so the restrictions connected to the lack of positrons and limited beam energy transfer do not apply...
A report on a present status of experimentally observed states of charmed baryons will be given.
Measurements of the inclusive and differential cross-sections for top-quark pair and single top production cross sections in proton-proton collisions with the ATLAS detector at the Large Hadron Collider are presented at center-of-mass energies of 8 TeV and 13 TeV. The inclusive measurements reach high precision and are compared to the best available theoretical calculations. These...
The production of jets and prompt isolated photons at hadron colliders provides a stringent test of perturbative QCD at the highest energies. The process can also be used to probe the proton structure.
The ATLAS collaboration has recently measured the inclusive and differential jet and dijet production cross section in data collected at a center-of-mass energy of 8 TeV and 13 TeV. We also...
Due to strong enhancement of loop effects in a superstrong magnetic field ($B\gg m^2/e^3$) the Coulomb potential becomes screened. This phenomenon dramatically changes the dependence of the electron energy levels on magnetic field. In particular, the freezing of energy levels occurs so the ground energy level of light ions can never reach the lower continuum (become critical), no matter how...
The increase of hadronic production as a function of multiplicity in proton-proton and proton-lead collisions is considered as an interesting observable to study multi-parton interactions. The correlation between J/$\Psi$ production and multiplicity has been studied in pp collisions at $\sqrt{s} = 7$ and 13 TeV and p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV by ALICE. An increase of...
Run-2 of the LHC has provided new challenges to track and vertex reconstruction with higher centre-of-mass energies and luminosity leading to increasingly high-multiplicity environments, boosted, and highly-collimated physics objects. To achieve this goal, ATLAS is equipped with the Inner Detector tracking system built using different technologies, silicon planar sensors (pixel and...
Energy tensor of the continuous nonempty space in the pure field physics of Einstein and Infeld is described by the analog of the Einstein equation for nondual matter. The modified Einstein equation results in the vector geodesic consequences for material 4-flows of scalar Ricci densities. Nonrelativistic 3-flows of these mass-energies modify the Navier-Stocks equation by the 1738 Bernoulli...
Production of Quark Gluon Plasma (QGP) has been established in central heavy ion collisions (Au+Au, Cu+Cu) at RHIC energies. Observation of strong suppression of hadron yields at high transverse momentum served as one of the most important evidences in favor of production of a new state of matter in such collisions. Recent RHIC run with asymmetric collision system (Cu+Au) provides the means to...
New evidence for a flowing medium
Quantum simulators promise to give rise to new insights into dynamical and static properties of complex quantum systems, beyond what is available on classical supercomputers. There is already some good evidence that quantum simulators have the potential to outperform classical computers. Yet, in order to be prone against arguments claiming a lack of imagination, this superior computational...
The AMADEUS collaboration is aiming to study the K$^-$ hadronic interaction with light nuclei in the low-energy regime with high precision. The main goal is to provide information on the $\bar{\mathrm{K}}$N interaction in nuclear medium, fundamental for the understanding of the non-perturbative QCD in the strangeness sector, with implications going from nuclear physics to astrophysics....
The OPERA experiment reached its main goal by proving the appearance of $\nu_{\tau}$ in the CNGS $\nu_{\mu}$ beam. A total sample of 5 candidates fulfilling the analysis defined in the proposal was detected with a S/B ratio of about ten allowing to reject the null hypothesis at 5.1 $\sigma$. The search has been extended to $\nu_{\tau}$-like interactions failing the kinematical analysis defined...
The LHCf collaboration has successfully completed at the end of 2016 the main part of its measurement campaign of neutral particles produced in the forward direction at the Large Hadron Collider. The main purpose of these measurements is to provide the Cosmic Ray and High Energy Physics communities with a missing unique set of information for the improvement of the hadronic interaction models...
Direct dark matter searches are promising techniques to identify the nature of dark matter particles. A variety of experiments have been developed over the past decades, aiming to detect Weakly Interactive Massive Particles (WIMPs) via their scattering in a detector medium. Exploiting directionality would also give a proof of the galactic origin of dark matter making it possible to have a...
TBA
SHIP is a new general purpose fixed target facility, whose Technical Proposal has been recently reviewed by the CERN SPS Committee and by the CERN Research Board. The two boards recommended that the experiment proceeds further to a Comprehensive Design phase in the context of the new CERN Working group "Physics Beyond Colliders", aiming at presenting a CERN strategy for the European Strategy...
