Prof.
Enectali Figueroa-Feliciano
(MIT)
23/06/2014, 09:30
Presentation
Cryogenic dark matter experiments composed of semiconductors operated at milliKelvin temperatures are one of the leading technologies in dark matter searches, currently setting the most stringent limits to the spin-independent WIMP-nucleon cross section for dark matter masses between 2-6 GeV. I will review the principles of direct dark matter detection and the various experiments using this...
Prof.
Richard Gaitskell
(Brown University)
23/06/2014, 10:00
Presentation
Particle dark matter is thought to be the overwhelming majority of the matter in the Universe. Its gravitational contribution overwhelms that from the ordinary matter that we, the earth and the stars, are composed of. However, direct evidence for the existence of particle dark matter remains controversial. In the last few years a number of experimental collaborations have reported possible...
Dinesh Loomba
(University of New Mexico)
23/06/2014, 11:00
Presentation
Over the past decade a world-wide experimental effort has grown significantly to the point where today
there are over half a dozen directional dark matter experiments, with four collecting data underground.
Although most of the efforts employ time projection chambers with low pressure gas-based targets, R&D
on novel approaches in liquids and solids is also proceeding. We review the...
Emilija Pantic
(UCLA)
23/06/2014, 11:30
Presentation
Noble liquid detectors are continuing to probe dark matter (DM) candidates in a wide parameter space. They utilize large targets of a very low background with a capability to reconstruct interaction point, allowing active background rejection. Liquid xenon (LXe) is an intrinsically radio-pure, efficient and fast scintillator with the best self-shielding capabilities. Liquid argon (LAr) is an...
Pierluigi Belli
(INFN - Roma Tor Vergata)
23/06/2014, 12:00
Presentation
An overview of the latest results of DAMA/LIBRA-phase1 will be presented and
the evidence obtained by exploiting the model independent annual modulation
signature for the presence of Dark Matter particles in the galactic halo will be discussed.
The data of the former DAMA/NaI and of the DAMA/LIBRA-phase1 satisfy all the
many requirements of the Dark Matter annual modulation signature...
Dr
Brian Reville
(Queen's University Belfast)
23/06/2014, 14:30
In recent years, our understanding of cosmic-ray acceleration at supernova shocks has advanced considerably. Observations of nearby SNR show clear evidence for magnetic field amplification, while theory and simulation has developed to the point where we can now investigate the plasma physics in these energetic environments self-consistently. I will review some of the recent developments in the...
Filippo Sala
(CEA/Saclay and CNRS)
23/06/2014, 14:30
We extend the Standard Model with a new particle, chosen from those that are automatically stable without adding any extra symmetry to the theory. Despite being a potential Dark Matter candidate, other motivations for such a new state will be discussed, like the stabilisation of the EW vacuum. Its phenomenology is controlled by a single parameter, its mass, which is fixed in the multi-TeV...
Dr
Gabrijela Zaharijas
(ICTP and INFN, Trieste)
23/06/2014, 14:30
High-energy gamma rays are one of the most promising ways to constrain or reveal the nature of dark matter. Through the first five years of the Fermi-LAT mission we have witnessed an exciting progress in this respect, with constraints on the dark matter cross section to various particle channels moving well into the theoretically motivated region of the parameter space and several hints of...
Dirk Lennarz
(Georgia Tech)
23/06/2014, 14:30
The High Altitude Water Cherenkov (HAWC) observatory is an extensive air shower (EAS) detector currently under construction in central Mexico at an altitude of 4,100 m above sea level. It improves the water Cherenkov technique, where gamma rays in the 100 GeV - 100 TeV range are detected by measuring Cherenkov light from secondary particles, by having an order of magnitude better sensitivity,...
Prof.
Christian Stegmann
(DESY)
23/06/2014, 14:50
The H.E.S.S. telescope system is operating since more than 10 years and the collaboration contributes significantly to the rapidly progressing field of ground-based gamma-ray astronomy. With the recent start of the operation of a new telescope with a mirror diameter of 28m the detection capabilities if the H.E.S.S. telescope system are significantly enhanced and the energy threshold is much...
Damiano Caprioli
(Princeton University)
23/06/2014, 14:55
Hybrid particle in cell simulations (with kinetic protons and fluid electrons) are providing us with unprecedented insights into the microphysics of collisionless shocks, also attesting to their ability to accelerate particles and to generate magnetic fields.
I present state-of-the-art 2D and 3D simulations of non-relativistic shocks, discussing under which conditions (shock strength and...
Bradley J. Kavanagh
(University of Nottingham)
23/06/2014, 14:55
Dark Matter Direct Detection
The interpretation of future dark matter (DM) direct detection data is fraught with uncertainties. In particular, measurements of the WIMP mass and cross section can be biased by poor assumptions about the WIMP speed distribution. I will present a new technique, based on parametrizing the logarithm of the WIMP speed distribution, which allows the dark matter mass and the speed distribution...
Mr
Stephan Zimmer
(OKC/ Stockholm University)
23/06/2014, 14:55
Galaxy Clusters are the largest gravitationally bound structures in our universe. The majority of their mass is believed to be in the form of dark matter (DM). If DM manifests itself as weakly interacting massive particles (WIMPs) these WIMPs may self-annihilate or decay, and galaxy clusters would then be excellent targets for searches of DM-induced gamma rays. In addition, N-body cosmological...
LianTao Wang
(University of Chicago)
23/06/2014, 15:00
Particle Physics
Supersymmetry is the most prominent candidate for new physics beyond the Standard Model. However, we have not seen any sign of it during the LHC run 1. In this talk, I will give an overview of the current status of SUSY, including important questions such as naturalness and Higgs physics. I will also remark on promising directions for further pursuit.
Melissa Pesce-Rollins
(INFN-Pisa)
23/06/2014, 15:10
During its first six years of operation, the Fermi Large Area Telescope (LAT) has detected >30 MeV gamma-ray emission from more than 40 solar flares, nearly a factor of 10 more than EGRET detected. Detections sample both the impulsive phase and long-duration emission, extending up to ~20 hours for the 2012 March 7 X-class flares, and include the first detection of >100 MeV emission from a...
Simon Peeters
(University of Sussex)
23/06/2014, 15:15
Dark Matter Direct Detection
DEAP-3600 is a single phase liquid argon direct-detection dark-matter experiment located at SNOLAB in Sudbury, Ontario, Canada, with projected WIMP-nucleon scattering sensitivity of $10^{-46}$ cm$^2$ in 3 years, a factor of 20 beyond current experimental results at 100 GeV WIMP mass. The detector commissioning starts in Spring 2014, and DEAP3600 is projected to reach competitive sensitivity...
Troels Petersen
(University of Copenhagen (DK))
23/06/2014, 15:20
Particle Physics
As the last and most advanced results of the Run1 ATLAS and CMS SUSY searches are in the process of being finalized, the status of these searches after LHC Run1 is that no indication for any signal has yet been seen. All data has been compatible with the estimated standard model backgrounds, and limits have therefore been set on the masses of various supersymmetric particles. I will cover a...
Gwenael Giacinti
(University of Oxford, Clarendon Laboratory)
23/06/2014, 15:20
The energy around which the transition from Galactic to extragalactic cosmic rays (CR) occurs is still unknown. Solving this major question would bring valuable clues about the nature and characteristics of Galactic and extragalactic CR sources, such as the maximum energy reachable by Galactic accelerators. The transition must lie between the knee (energy E ~ 4 PeV) and the ankle (E ~ 3 EeV)....
Daniela Hadasch
(University of Innsbruck)
23/06/2014, 15:30
The small source class of gamma-ray binaries consists at present of six known objects with different orbital periods ranging from days up to several years. One of the best studied gamma-ray binary across all frequencies, LS I +61 303, is highly variable at any given orbital phase and was lately discovered to show on top of orbital also superorbital variability at high energies. In contrary,...
Felix Kahlhoefer
(University of Oxford)
23/06/2014, 15:35
Dark Matter Direct Detection
Uncertainty in the local dark matter velocity distribution is a key difficulty in the analysis of data from direct detection experiments. In my talk, I will propose a completely new approach for dealing with this uncertainty, which does not involve any assumptions about the structure of the dark matter halo. Given a dark matter model, this approach yields the velocity distribution which best...
Ms
Pearl Sandick
(University of Minnesota)
23/06/2014, 15:40
Recent experimental results from the LHC have placed strong constraints on the masses of colored superpartners.
Additionally, direct dark matter searches put a strong upper limit on cross sections of interactions between the WIMP and quark sectors.
However, leptophilic versions of the MSSM can potentially survive these constraints while explaining the observed abundance of dark matter. We...
Paolo Bernardini
(Universita' del Salento - INFN)
23/06/2014, 15:45
The ARGO-YBJ detector layout, features and location at high altitude (the Cosmic Ray Observatory of Yangbajing in Tibet, China, at about 606 g/cm^2 of atmospheric depth), joined to the analog readout of the RPC (Resistive Plate Chamber) streamer signals, provide the opportunity to study, with unprecedented resolution and without saturation, the distribution of the charged particles of...
Laura Lopez Honorez
(Vrije Universiteit Brussel)
23/06/2014, 16:30
In my talk I will review the most recent cosmological constraints on dark matter annihilation with a special focus on CMB probes.
Dr
Nassim Bozorgnia
(MPIK)
23/06/2014, 16:30
In analyzing data from dark matter direct detection experiments, usually an isotropic Maxwellian velocity distribution is assumed. However, dark matter N-body simulations suggest that the velocity distribution of dark matter is anisotropic. I will discuss how to use information from kinematical data on the Milky Way to constrain the properties of the dark matter phase space distribution, based...
Martina Cardillo
(INAF - Osservatorio astrofisico di Arcetri)
23/06/2014, 16:30
One of the main open issues about the origin of Galactic CRs is the maximum energy that can be achieved by acceleration in Supernova Remnants.
In a rigidity dependent acceleration mechanism, protons are expected to reach a few PeV and heavier ions correspondingly higher energies.
A recent theory suggests that, in a core-collapse SNR expanding in its pre-supernova wind, magnetic field...
Mrs
Elisabetta Baracchini
(The University of Tokyo)
23/06/2014, 16:30
We will present the latest result from the MEG experiment, based on the data collected at the Paul Scherrer Institut (PSI), in search of the Lepton Flavour Violating (LFV) decay $\mu^+ \to e^+ \gamma$. Such decay is forbidden within the Standard Model (SM), nevertheless most of its viable extensions predict a branching ratio in the 10$^{−14}$ to 10$^{−12}$ range. An observation of the $\mu^+...
Giampiero Mancinelli
(CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France)
23/06/2014, 16:45
Particle Physics
Rare decays of beauty hadrons test the flavour structure of the Standard Model and of other theories at the level of quantum corrections. They provide information on the couplings and masses of heavy virtual particles appearing as intermediate states. A review of recent results from the the LHCb, ATLAS, and CMS collaborations on new physics searches in b -> s transitions will be presented.
Satyendra Thoudam
(R)
23/06/2014, 16:48
Cosmic Rays
Recent measurement of cosmic rays by the ATIC, CREAM and PAMELA experiments have found that the energy spectrum in the TeV region is harder than at GeV energies. The origin of the hardening is not clearly understood. Suggested explanations include hardening in the cosmic-ray source spectrum, changes in the cosmic-ray propagation properties in the Galaxy and the effect of the nearby sources. In...
Prof.
Tracy Slatyer
(MIT)
23/06/2014, 16:50
Discrepancies between N-body dark matter simulations and the observed distribution of dark matter on galactic and sub-galactic scales have been advanced as evidence of a complex dark sector. Dark matter self-interactions can flatten density cusps and reduce halo concentrations, and the down-scattering of a relic population of dark matter particles in a nearly-degenerate excited state could...
Fabio Zandanel
(University of Amsterdam)
23/06/2014, 16:50
Relativistic particles are revealed in clusters of galaxies from observations of diffuse synchrotron radio emission. At least part of this emission can be originated by secondary electrons produced by cosmic-ray protons interacting with the protons of the intra-cluster medium. This should be accompanied by the production of gamma rays, potentially detectable by the Fermi satellite and...
Dr
ioannis giomataris
(CEA-Saclay)
23/06/2014, 16:50
Abstract
We present recent results taken at the LSM laboratory using the new spherical gaseous detector. It consists of a large spherical gas volume with a central electrode forming a radial electric field. A small spherical sensor located at the center is acting as a proportional amplification structure. Sub-keV energy threshold and versatility of the target (Ne, He, H) opens the way to...
Prof.
Toyoko Orimoto
(Northeastern University)
23/06/2014, 17:05
The ATLAS and Compact Muon Solenoid (CMS) Experiments are general-purpose particle detector experiments at the Large Hadron Collider (LHC) at CERN. ATLAS and CMS have successfully collected a large dataset consisting of approximately 20/fb (5/fb), of proton-proton collisions at a center-of-mass energy of 8 TeV (7 TeV). In addition to clarifying the origins of electroweak symmetry breaking, one...
Prof.
Christian Beck
(Queen Mary, University of London, School of Mathematical Sciences)
23/06/2014, 17:10
This talk will be on a recent proposal that QCD dark matter axions from the galactic halo that pass through Earth can produce a small Shapiro step-like signal in Josephson junctions whose Josephson frequency resonates with the axion mass [1].
The axion field equations in a voltage-driven Josephson environment allow for a
nontrivial solution where the axion-induced electrical current...
Dr
Valerie Connaughton
(National Space Science and Technology Centre)
23/06/2014, 17:20
Our understanding of high-energy emission from Gamma-Ray Bursts has greatly advanced with observations from the Fermi gamma-ray space telescope. I will review the Fermi observations and explain why they give hope to the very high-energy communities in their quest for Gamma-Ray Burst detections with the High Altitude Water Cherenkov (HAWC) and Cherenkov Telescope Array (CTA) experiments. I...
Tristan Arnoldus Du Pree
(Universite Catholique de Louvain (UCL) (BE))
23/06/2014, 17:25
Besides studies of the Higgs boson, supersymmetry, and dark matter, the ATLAS and CMS experiments conduct a broad program of searches for more exotic new physics possibilities. These investigations include searches for heavy gauge bosons, leptoquarks, long-lived particles, vector-like quarks, excited leptons, heavy neutrinos, extra dimensions, black holes, and many other models. This...
Mrs
Juan Antonio Garcia Pascual
(Universidad de Zaragoza)
23/06/2014, 17:30
Axions are well motivated particles proposed in an extension of the SM as a solution to the strong CP-problem. On the other hand there is the category of axion-like particles (ALPs) which appear in diverse extensions of the SM and share the same phenomenology of the axion. Axions and ALPs are hypothetical neutral and light particles which interacts weakly with the matter, being candidates to...
Dirk Lennarz
(Georgia Tech)
23/06/2014, 17:40
The temporal evolution and end of GRB spectra have important implications for the acceleration mechanisms of gamma-ray bursts (GRBs). Above $\approx10$ GeV the effective area of \emph{Fermi}-LAT is approximately constant and since the photon flux is steeply decreasing with energy, an insufficient number of photons is detected. The High Altitude Water Cherenkov (HAWC) observatory is a gamma-ray...
LianTao Wang
(University of Chicago)
23/06/2014, 17:45
Particle Physics
LHC run 2 will significantly enhance the reach of new physics searches. In this talk, I will give an overview of the new ground to be covered and new questions to be answered. I will attempt to identify a set of top physics targets, as well as some challenges.
Giuseppe Di Bernardo
23/06/2014, 17:49
Cosmic Rays
Fairly poor knowledge is still present about the cosmic ray (CR) spectra at low energies, due to the distortion produced by the solar wind on the particle fluxes. A self-consistent galactic plus solar propagation model turns out necessary in order to correctly reproduce the CR nuclear and lepton spectra.
For that, a detailed transport description in the galaxy has been...
Raimund Strauss
(Max-Planck-Institut für Physik)
23/06/2014, 17:50
The CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) experiment has started a new Dark Matter run in summer 2013 with a total target mass of ~5kg. Significant improvements have be achieved with respect to previous measuring campaigns in terms of the intrinsic radiopurity of CaWO$_4$ crystals and the rejection of recoil events from $\alpha$ surface contamination. The first...
Maxim Piskunov
(Institute for Nuclear Research RAS)
23/06/2014, 17:55
Numerous observations confirm that the high energy (> 100 MeV) emission of gamma ray bursts is delayed with respect to the low energy emission. However, the difference of light curves in various high energy bands has not been studied properly.
In this paper we consider all the bursts observed by Fermi-LAT since 2008 August 4 to 2011 August 1, for which at least 10 events with energies 1 GeV...
Ilias Cholis
(Fermi National Accelerator Laboratory)
23/06/2014, 18:00
The approximately isotropic gamma-ray background measured by Fermi-LAT probes the contribution from several classes of astrophysical sources. Using the catalog of known gamma-ray sources along with similar catalogues at radio wavelengths, we can model and constrain the contributions to the extragalactic gamma-ray background from astrophysical sources, as are radio galaxies, star-forming...
Albert De Roeck
(CERN),
Albert De Roeck
(CERN)
23/06/2014, 18:05
Particle Physics
In 2012 the Large Hadron Collider, at CERN, Geneva, Switzerland, discovered a new type of particle, a Higgs Boson, which is anticipated to have played a crucial role at the beginning of the Universe, giving mass to the elementary particles. This paradigm shifting discovery was made by large
experimental collaborations analysing the data of the LHC collected in the years 2011and 2012. It has...
Dr
Robert Parsons
(Max-Planck-Institut für Kernphysik)
23/06/2014, 18:10
We present a high-performance event reconstruction algorithm: an Image Pixel-wise fit for Atmospheric Cherenkov Telescopes (ImPACT). This gamma-ray event reconstruction algorithm is based around the comparison of camera pixel amplitudes to an expected image template, performing a maximum likelihood fit to find the best-fit shower parameters. Related reconstruction algorithms have already been...
Mattia Fornasa
(U)
23/06/2014, 18:10
Dark Matter Direct Detection
Dark Matter (DM) direct detection experiments usually assume a simple “Standard Halo Model” for the Milky Way halo, in which the velocity distribution f(v) is Maxwellian.
In an alternative observation-oriented approach the DM velocity distribution is derived from our knowledge of the composition of the Milky Way (i.e. its mass model), obtaining, thus, a “self-consistent” f(v). This is...
Prof.
Justin Read
24/06/2014, 09:30
Presentation
I review current efforts to measure the mean density of dark matter near the Sun. This encodes valuable dynamical information about our Galaxy and is also of great importance for direct detection dark matter experiments. I briefly discuss theoretical expectations in our current cosmology; the theory behind mass modelling of the Galaxy; and I show how combining local and global measures probes...
Dr
Alyson Brooks
(Rutgers University)
24/06/2014, 10:00
Presentation
The cosmological model based on cold dark matter (CDM) and dark energy has been hugely successful in describing the observed evolution and large scale structure of our Universe. However, at small scales (in the smallest galaxies and at the centers of larger galaxies), a number of observations seem to conflict with the predictions CDM cosmology, leading to recent interest in Warm Dark Matter...
matteo viel
24/06/2014, 11:00
Presentation
I will review the constraints that can be placed on the
coldness of cold dark matter and total neutrino mass by using the
Lyman-alpha forest, which is the main manifestation of the
intergalactic medium. The intergalactic medium cosmic web probes
mildly non-linear scales of the matter distribution at redshifts
z=2-6, in a crucial phase of the formation of cosmic structures. I
will...
Hai-Bo Yu
(University of Michigan)
24/06/2014, 11:30
Presentation
Dark matter self-interactions have important implications for the distributions of dark matter in the Universe, from dwarf galaxies to galaxy clusters. In this talk, I will discuss recent progress in self-interacting dark matter.
Roberta Sparvoli
(University of Rome Tor Vergata)
24/06/2014, 14:30
In about 8 years of data taking in space, the experiment PAMELA has shown very interesting features in cosmic rays, namely in the fluxes of protons, heliums, electrons, that could have significant implications on the production, acceleration and propagation of cosmic rays in the galaxy. In addition, PAMELA measurements of cosmic antiproton and positron fluxes are setting strong constraints to...
Dr
Nepomuk Otte
(Georgia Institute of Technology)
24/06/2014, 14:30
VERITAS is an array of four 12 m class Cherenkov telescopes for very-high-energy gamma-ray (>50 GeV) observations. The VERITAS Collaboration completed a series of upgrades in summer 2012 with the objective of lowering the energy threshold and improving the sensitivity of the array at all accessible energies. One telescope was relocated, the trigger system was replaced, and the cameras were...
Dr
Emiliano Carmona
(CIEMAT)
24/06/2014, 14:50
MAGIC, the system of two imaging atmospheric Cherenkov telescopes located at the Canary island of La Palma, has successfully explored the very-high-energy (VHE) sky in stereoscopic mode since 2009. Thanks to its two 17-m diameter mirror dishes, MAGIC has provided unique results in the low-energy range of ground-base gamma-ray astronomy. In addition, the substantial upgrades introduced in the...
Andrea Vittino
(Universita' di Torino and IPhT/CEA Saclay)
24/06/2014, 14:55
Light anti-nuclei, namely anti-deuteron and anti-helium, can be produced through the nuclear coalescence of the anti-protons and the anti-neutrons that are originated in a dark matter pair annihilation event. At low kinetic energies, the fluxes of these bound states are found to dominate over the astrophysical background and thus anti-nuclei may be considered as a very promising channel for a...
Prof.
Eun-Suk Seo
(University of Maryland)
24/06/2014, 14:55
The balloon-borne Cosmic Ray Energetics And Mass (CREAM) experiment was flown for ~161 days in six flights over Antarctica. High energy cosmic-ray data were collected over a wide energy range from ~ 10^10 to > 10^14 eV at an average altitude of ~38.5 km with ~3.9 g/cm2 atmospheric overburden. Cosmic-ray elements from protons (Z = 1) to iron nuclei (Z = 26) are separated with excellent charge...
Mauricio Bustamante
(DESY Zeuthen / Universität Würzburg)
24/06/2014, 15:10
The origin of ultra-high energy cosmic rays (UHECRs), with energies above $10^{18}$ eV, remains unknown fifty years after their discovery. Gamma-ray bursts (GRBs) are arguably among the most likely sources: their high luminosities (> $10^{52}$ erg/s) hint at the possibility that strong magnetic fields in them are able to shock-accelerate protons to the high energies that are necessary to...
Andrii Neronov
(Universite de Geneve (CH))
24/06/2014, 15:10
I will review the techniques of the measurement of optical / infrared extragalactic background light (EBL) and of intergalactic magnetic fields (IGMF) using the effect of absorption of very-high-energy gamma-rays in the intergalactic medium. I will summarise the existing constraints on both EBL and IGMF and discuss perspectives of improvement of the measurements with the next generation...
Dr
Holger Motz
(Waseda University)
24/06/2014, 15:20
The Calorimetric Electron Telescope (CALET) will be installed at the ISS in JFY 2014 and measure the energy and direction distribution of electron/positron cosmic rays well into the TeV range. Featuring a proton rejection capability of $1:10^5$ and an energy resolution of 2$\%$, it is well suited to investigate features in the spectrum, testing the hypotheses of Dark Matter annihilation and/or...
Prof.
Shoji Torii
(Waseda University)
24/06/2014, 15:20
The CALET space experiment, currently under development by Japan in collaboration with Italy and the United States,will measure the flux of Cosmic Ray electrons (and positrons) to 20 TeV, gamma rays to 10 TeV and nuclei with Z=1 to 40 up to 1,000 TeV during a five year mission. These measurements are essential to investigate possible nearby astrophysical
sources of high energy electrons,...
Carmelo Evoli
(Hamburg University)
24/06/2014, 15:35
The latest years have seen steady progresses in weakly interacting massive particle (WIMP) dark matter (DM) searches, with hints of possible signals suggested both in direct and indirect detection. Cosmic-ray (CR) antiprotons play a key role in this context, since WIMP annihilations can be a copious source of antiprotons, and, at the same time, the antiproton flux from conventional...
Valerio Vagelli
(KIT - Karlsruhe Institute of Technology (DE))
24/06/2014, 15:45
Cosmic Rays
The AMS-02 detector is a large acceptance cosmic ray detector operating on the International Space Station since May 2011.
About 40 billion events have been collected by the instrument in the first 30 months of data taking.
Among them, 10.5 million of electrons and positrons have been selected to measure the cosmic lepton energy spectrum at energies up to the TeV.
In this contribution we...
Mattia Di Mauro
(University of Turin and INFN Turin)
24/06/2014, 16:30
We perform a combined analysis of the recent AMS-02 data on electrons, positrons, electrons plus positrons and positron fraction, in a self-consistent framework where we realize a theoretical modeling of all the astrophysical components that can contribute to the observed fluxes in the whole energy range. The primary electron contribution is modeled through the sum of an average flux from...
Asen Christov
(Universite de Geneve (CH))
24/06/2014, 16:30
We have performed a variety of searches for neutrino emission from astrophysical sources using multiple years of IceCube data collected between April 2008 and May 2011 by the partially-completed IceCube detector, as well as the first year of data from the completed 86-string detector. Utilizing spatial, energy and time information, an unbinned maximum likelihood method is used to distinguish...
Carsten Rott
(Sungkyunkwan University)
24/06/2014, 16:30
Dark matter particles captured by the Sun through scattering may annihilate and produce neutrinos, which escape. Current searches have focused on the high-energy neutrino signal produced in the prompt decays of some final states. Interactions of hadronic annihilation products lead to other interesting final states with potentially observable neutrino signals. The talk will discuss the...
Martin Bissok
(RWTH Aachen)
24/06/2014, 16:50
Dark matter may self-annihilate, and produce a flux of final-state particles,
including neutrinos. Indirect dark matter searches target regions of increased
dark matter density, and thus increased expected flux, with the Galactic center
being the most prominent target region in the Milky Way.
IceCube is a cubic-kilometer-scale neutrino detector embedded in glacial ice at
the South Pole....
Anna Bernhard
(TU München)
24/06/2014, 16:50
The IceCube neutrino observatory built in the antarctic ice offers unique opportunities for studying high energy neutrino emission from galactic and extragalactic sources. Detecting such neutrino emission could give invaluable information about the origin of cosmic rays. Recently, the first evidence for astrophysical neutrinos in the PeV range was found with IceCube. No identification of point...
Marianne Lemoine-Goumard
(CNRS)
24/06/2014, 17:00
Supernova remnants (SNRs) are thought to be the primary sources of the bulk of Galactic cosmic-ray protons observed at Earth, up to the knee energy at ~3 PeV. Our understanding of CR acceleration in SNRs mainly relies on the so-called Diffusive Shock Acceleration theory which is commonly invoked to explain several observational (though, indirect) lines of evidence for efficient particle...
Meike de With
(Humboldt University, Berlin)
24/06/2014, 17:00
In many models, the self-annihilation of dark matter particles will create neutrinos which can be detected on Earth. An excess flux of these neutrinos is expected from regions of increased dark matter density, for example galaxies and galaxy clusters. The IceCube neutrino observatory, a cubic-kilometer neutrino detector at the South Pole, is capable of detecting neutrinos down to energies of...
Mr
Jan Kunnen
(Vrije Universiteit Brussel)
24/06/2014, 17:10
Many models predict that dark matter consists of Weakly Interacting Massive Particles (WIMPs).
Heavy celestial bodies, such as the Earth, might capture these WIMPs, accumulate them in their gravitational centre and over time these dark matter particles will self-annihilate. These annihilations may produce standard model particles, including neutrinos.
Large scale neutrino telescopes, such...
278.
Extended Blazar Observations by VERITAS and Implications for the Extragalactic Background Light
Mr
Yerbol Khassen
(University College Dublin)
24/06/2014, 17:10
The VERITAS Collaboration has been conducting long-term observations of several TeV blazars at a variety of redshifts to characterise their temporal and spectral properties. The very high energy (VHE, >100 GeV) spectra of TeV blazars are expected to show energy-dependent absorption that increases with redshift due to the interaction of VHE photons with infra-red photons of the extragalactic...
Christoph Tönnis
(Universitat de Valencia)
24/06/2014, 17:20
One of the main goals of neutrino telescopes is the indirect search for dark matter. The ANTARES detector, installed in the Mediterranean Sea, has been taken data since 2007. In this talk we present the results on different dark matter potential sources, including the Sun, the Galactic Center, the Earth, dwarf galaxies and galaxy clusters produced with different analysis methods and will show...
Prof.
Philip Von Doetinchem
(University of Hawaii at Manoa)
24/06/2014, 17:25
In recent years the interest in cosmic ray antideuteron measurements has increased due to detection potential of signals from a variety of dark matter, primordial black hole, or gravitino models. This talk will review the motivations and status of cosmic ray antideuteron searches and discuss future detection prospects.
Prof.
Karl Mannheim
(University Wuerzburg)
24/06/2014, 17:25
Radio galaxies are a prime target for studies of the processes that lead to the formation of extragalactic jets. Their spectral energy distributions do not agree with the ones of blazars after an appropriate increase of the orientation angle. In fact, the de-boosted emission from the relativistic jets opens the view to the magnetospheric jet formation region associated with accreting...
Mr
Sebastian Wild
(Technical University Munich)
24/06/2014, 17:35
Dark matter particles captured in the Sun would annihilate producing a neutrino flux that could be detected at the Earth. In some channels, however, the neutrino flux lies in the MeV range and is thus undetectable at IceCube, namely when the dark matter particles annihilate into electrons, muons or light quarks. In this talk we show that the same interaction that mediates the annihilations...
Florian Folger
(University of Erlangen)
24/06/2014, 17:40
The ANTARES neutrino telescope, located in the deep sea offshore the French Mediterranean coast, aims at the detection of cosmic neutrinos in the TeV/PeV range. It has been continuously taking data since 2007. In this contribution a search for a diffuse cosmic neutrino flux is presented. The focus is laid on a recently finished analysis of showering events induced by all three neutrino...
Alberto Oliva
(Centro de Investigaciones Energ. Medioambientales y Tecn. - (ES)
24/06/2014, 17:50
AMS-02 is a high-energy particle physics experiment operating continuosly since May 2011 onboard of the International Space Station.
Given the wide acceptance, long exposure time and particle identification capabilities, AMS-02 is able to determine the cosmic rays (CRs)
chemical composition from charge $Z=1$ up to at least $Z=26$ in a kinetic energy range from GeV/n to few TeV/n.
Among the...
Agustín Sánchez Losa
(IFIC (Spain))
24/06/2014, 17:55
ANTARES is currently the largest operating neutrino telescope in the Northern Hemisphere, mainly sensitive to TeV neutrinos. Its main goal is the detection of high energy neutrinos from astrophysical sources, which would provide important insights about the processes powering their engines and would help understand the origin of high energy cosmic rays.
To identify unambiguously such...
Denis Robertson
(Instituto de Fisica, Universidade de Sao Paulo)
24/06/2014, 18:00
If dark matter particles self-interact, their capture by astrophysical objects should be enhanced. As a consequence, the rate by which they annihilate at the center of the object will increase. If their self scattering is strong, it can be observed indirectly through an enhancement of the flux of their annihilation products. Here we investigate the effect of self-interaction on the neutrino...
Dr
M. Angeles Perez-Garcia
(University of Salamanca and IUFFyM)
24/06/2014, 18:05
We propose that the existing population of neutron stars in the galaxy can help constrain the nature of decaying dark matter. The amount of decaying dark matter, accumulated in the central regions in neutron stars and the energy deposition rate from decays, may set a limit on the neutron star survival rate against transitions to more compact stars and, correspondingly, on the dark matter...
Nicola Mori
(Universita e INFN (IT))
24/06/2014, 18:05
PAMELA is a satellite-borne experiment, aimed at precision measurements of
the charged light component of the cosmic-ray spectrum. It consists of a
magnetic spectrometer, a time-of-flight system, an electromagnetic
calorimeter, an anticoincidence system and a neutron detector. Recently, the
PAMELA collaboration has finalized the measurement of the absolute fluxes of
boron and carbon and...
Dr
Jordi Casanellas
(Max Planck Institute for Gravitational Physics (Albert Einstein Institute))
24/06/2014, 18:15
Low-mass asymmetric dark matter (DM) particles are appealing DM candidates that are not detectable with most indirect DM searches. However, these particles may efficiently accumulate in the core of low-mass stars, reducing their central temperatures and inhibiting the formation of small convective cores in 1.1-1.3 M$_{\odot}$ stars, thus leaving a characteristic signature in the low-degree...
Philipp Mertsch
(KIPAC, Stanford University)
24/06/2014, 18:20
Cosmic Rays
Recently, the AMS-02 collaboration has presented data on cosmic ray protons, Helium, electrons and positrons as well as the boron-to-carbon ratio. We present the first consistent modelling of these data, paying particular attention to the contribution due to production and acceleration of secondary electrons and positrons in nearby supernova remnants. This process results in an additional,...
foteini oikonomou
(University College London)
24/06/2014, 18:20
High frequency peaked, high redshift blazars, are extreme in the sense that their spectrum is particularly hard and peaks at TeV energies. Standard leptonic scenarios often require peculiar source parameters and/or a special setup in order to account for these observations. Electromagnetic cascades seeded by ultra-high energy cosmic rays (UHECRs) in the intergalactic medium have also been...
Concepcion Gonzalez-Garcia
(YITP, Stony Brook and ICREA, U. Barcelona)
25/06/2014, 09:00
Presentation
I will review our present understanding of neutrino properties in the light of the existing data: their masses, the leptonic mixing, CP violation, the possibility of new light states, non-standard interactions.
Dr
Stefano Gabici
25/06/2014, 09:30
Presentation
I will give a brief overview on the recent developments in cosmic ray research. The current hypotheses about the origin of these particles will be discussed. The connections with photon (from radio to gamma rays) and neutrino observations will be highlighted.
Prof.
Peter Meszaros
(Pennsylvania State University)
25/06/2014, 10:00
Presentation
I will review the most prominent types of extragalctic gamma-ray sources,
such as gamma-ray bursts, AGNs and other galaxies, including some specific
individual sources, and the effects expected from intergalactic shocks.
I will then discuss some of the physical models used to describe these
objects, and the possible connections between the gamma-ray emission and
cosmic ray as well as...
Dr
Rolf Buehler
(DESY)
25/06/2014, 11:00
Presentation
Our galaxy hosts a zoo of astronomical particle accelerators. In this presentation I will discuss recent gamma-ray observations of these sources and what they have told us about their inner workings. Among others, I will discuss recent observations of Super Novae Remnants and Pulsars. I will also talk about the increasing population of time variable gamma-ray sources, as Novae, Binary systems...
Jim Hinton
(University of Leicester)
25/06/2014, 11:30
The enormous potential of the imaging atmospheric Cherenkov technique (IACT) for high energy astrophysics has been demonstrated by the currently operating HESS, MAGIC and VERITAS telescope arrays. The technique provides excellent angular resolution at high energies and huge collection area in comparison with space-based instruments such as Fermi-LAT. The Cherenkov Telescope Array (CTA) is a...
Luca Baldini
(INFN-Pisa)
25/06/2014, 12:00
Presentation
Launched on June 11 2008, the the Fermi Gamma-ray Space Telescope has successfully completed its first sixth years of operation in space. We shall briefly review the status of the observatory, along with some of the most recent science highlights, and discuss the prospects for the extended phase of the mission.
Ms
Emma De Ona Wilhelmi
(IEEC-CSIC Barcelona)
25/06/2014, 14:00
The last few years have witness a revolution in very high
gamma-ray astronomy (VHE; E>100 GeV) driven largely by a new generation of
Cherenkov telescopes. These new facilities,
namely H.E.S.S. and the new 28-meter-sized mirror H.E.S.S. 2, MAGIC and
its upgrade MAGIC 2 and Veritas were designed to increase the
flux sensitivity in the energy regime of hundreds of GeV, expanding...
Dr
Marie-Helene GRONDIN
(CENBG, Bordeaux, France)
25/06/2014, 14:20
Successfully launched on June 11, 2008, the Large Area Telescope (LAT), aboard the Fermi Gamma-ray Space Telescope is sensitive to gamma-rays with energies from about 20 MeV to more than 300 GeV and covers the full sky every 3 hours. The improved sensitivity and the unprecedented statistics offered by the LAT in comparison to its predecessor EGRET enable the study of various classes of...
Edward Kearns
(Boston University)
25/06/2014, 14:50
I will review the latest results in neutrino physics from the Super-Kamiokande experiment, on behalf of the collaboration. Super-Kamiokande is a 50-kton water Cherenkov detector located in Kamioka Japan, operational since 1996. The Super-K collaboration studies atmospheric neutrinos, solar neutrinos, supernova neutrinos, and neutrinos from possible dark matter annihilation.
Paolo Gondolo
(University of Utah)
25/06/2014, 14:55
This talk will present a reexamination of the current direct dark matter data including the recent CDMSlite, LUX, and SuperCDMS data, assuming that the dark matter consists of light WIMPs, with mass close to 10 GeV/$c^2$ with spin-independent and isospin-conserving or isospin-violating interactions. We have compared the data with a standard model for the dark halo of our galaxy and also in a...
Dr
Marco Regis
(University of Turin and INFN)
25/06/2014, 14:55
Annihilations or decays of WIMPs in dark-matter (DM) halos can produce high-energy electrons and positrons, which in turn give raise to synchrotron radiation via their interaction with the interstellar magnetic field.
The emission typically peaks in the radio band, which is thus a promising range of photon wavelengths for indirect DM searches.
I will discuss recent results in the search for...
Benjamin Büttner
(University of Hamburg)
25/06/2014, 15:05
The OPERA experiment is designed to search for $ \nu_\mu \rightarrow \nu_\tau $ oscillations in appearance mode through the direct observation of the $ \tau $ lepton in $ \nu_\tau $ Charged Current interactions. The $ \nu_\tau $ CC interaction is identified through the detection of the $ \tau $ lepton decay topology in the so called Emulsion Cloud Chamber (ECC), passive lead plates...
Rikard Enberg
(Uppsala University)
25/06/2014, 15:20
Atmospheric neutrinos and muons are produced in interactions of cosmic rays with Earth's atmosphere. At very high energy, the contribution from semi-leptonic decays of charmed hadrons, known as the prompt flux, dominates over the conventional flux from pion and kaon decays. This is due to the very short lifetime of the charmed hadrons, which therefore do not lose energy before they decay. The...
Dr
Michael Loewenstein
(University of Maryland/CRESST/NASA-GSFC)
25/06/2014, 15:20
After briefly summarizing previous constraints on dark
matter candidates that produce X-ray emission lines via radiative
decay, with an emphasis on the sterile neutrino and moduli dark
matter, I present the recent detection by our team of a candidate dark
matter feature at ~3.56 keV. This weak unidentified emission line was
discovered by stacking XMM-Newton spectrum of 73 galaxy clusters...
Miguel Peiró
25/06/2014, 15:35
Dark Matter Direct Detection
In the last decade experiments aiming at the direct detection of dark matter (DM) have
increased significantly their sensitivity. In fact, ton-scale setups have been proposed,
especially using Germanium and Xenon targets, which raises the hope of a detection in the near future.
In light of this situation, it is necessary to study how well the DM parameters (mass, spin-dependent (SD) and...
Prof.
Michele Maltoni
(Instituto de Fisica Teorica UAM/CSIC)
25/06/2014, 15:40
In this talk we will discuss the physics reach of present and future atmospheric neutrino experiments, both in the context of the standard three-neutrino oscillations scenario and in the presence of New Physics. A particular attention will be devoted to the impact on the determination of the neutrino mass hierarchy.
Dr
Christian Farnier
(Oskar Klein Centre, Stockholm University)
25/06/2014, 16:30
Dark matter searches with the Cherenkov Telescope Array
Christian Farnier (Oskar Klein Centre - Stokckholm University) for the CTA Consortium
The current paradigm of the Universe states that more than 80% of its mass content consists of dark matter of unknown origin. Since its discovery more than eighty years ago, the quest for dark matter identification is one of the most important...
Mikko Meyer
(University of Hamburg)
25/06/2014, 16:30
The Borexino experiment is a 300 t liquid scintillator detector located at the LNGS in Italy. The main task of the experiment is the real time detection of solar neutrinos. This talk will give an overview of the recent results from the first phase of the experimental program including the measurement of solar neutrinos as well as geoneutrinos.
Furthermore an overview of the SOX project is...
Hiroyuki Sekiya
(University of Tokyo)
25/06/2014, 16:50
Hyper-Kamiokande (Hyper-K) will be a next generation underground water Cherenkov detector with the total (fiducial) mass
of 0.99 (0.56) million metric tons, which is approximately 20 (25) times larger than that of Super-Kamiokande.
One of the main goals of Hyper-K is the study of CP asymmetry in the lepton sector using accelerator
neutrino and anti-neutrino beams. With a total exposure...
Akira Hitachi
(Kochi Medical School)
25/06/2014, 16:55
Dark Matter Direct Detection
The scintillation efficiency for low energy recoil ions in liquid argon has been evaluated for WIMP searches. the track structure and the excitation density for recoil ions are calculated then the prescribed diffusion equation for biexcitonic quenching has been solved and the total quenching factor qT for 5-240 keV recoil ions in liquid Ar at zero electric field are obtained. All the constants...
Mr
Paolo Cumani
(University of Trieste / INFN Trieste)
25/06/2014, 16:55
GAMMA-400 is a Russian space mission with an international contribution, primarily devoted to the study of gamma-rays in the MeV – TeV energy range. One of the main topic addressed by GAMMA-400 will be the search of possible hint of Dark Matter signal with observation firstly towards the Galactic Center and Dwarf Galaxies. Thanks to a deep calorimeter of novel concept and a state-of-the-art...
Dr
Carl Gilbert Pfendner
(Ohio State University (USA))
25/06/2014, 17:10
Neutrinos
The cosmic ray flux cut off above primary energies of $10^{19.5}$ eV leads us to expect an ultra-high energy (UHE) neutrino flux due to the GZK effect. The detection of these UHE cosmic neutrinos will add to the understanding of the sources and physics of UHE cosmic rays.
On interacting within a dense medium, a UHE neutrino will produce an extended particle shower, which in turn produces a...
Prof.
Kaixuan Ni
(Shanghai Jiao Tong University)
25/06/2014, 17:15
Liquid xenon is one of the best detection mediums for dark matter direct detection, as demonstrated by the XENON100 and LUX experiments. Rejecting the electron recoil background from material radioactivity of the detector system and even solar and atmospheric neutrinos remains as the most challenging task for future dark matter detectors based on liquid xenon. Here we will present an...
Hamish Silverwood
(University of Amsterdam)
25/06/2014, 17:20
The nature of Dark Matter (DM) is a pressing question, and can be investigated through the detection of gamma rays produced by annihilating DM. The upcoming Cherenkov Telescope Array (CTA) will provide increased sensitivity to high energy gamma rays and hence higher mass DM particles. When conducting analyses of the capability of CTA it is important to study the effects of backgrounds....
Dr
Harm Schoorlemmer
(University of Hawaii at Manoa)
25/06/2014, 17:30
The Antarctic Impulsive Transient Antenna (ANITA) is a balloon-borne ultra-high-energy particle observatory. At a cruising altitude of $\sim$36 km, it provides a panoramic view of the Antarctic ice sheet in the 200-1200 MHz band. ANITA has been designed to detect Askaryan radiation from ultra-high-energy ($>10^{18}$ eV) neutrino interactions in the ice. Two successful flights have led to...
Chris Kelso
(University of Utah)
25/06/2014, 17:35
The CoGeNT collaboration has released more than 3 years of data including the spectrum and time variation of the nuclear candidate events in their germanium detector. We perform an unbinned, maximum likelihood fit to the data, accounting for known backgrounds and systematic effects to search for dark matter interactions with the detector. Background and possible signals are characterized by...
Mr
Matthieu Kieffer
(LPNHE Paris)
25/06/2014, 17:50
Weakly Interacting Massive Particles (WIMPs) are currently one of the most popular hypotheses to answer the question of the nature of Dark Matter. Gamma-ray line signatures from self-annihilation of WIMPs can be detected at very-high energies by the H.E.S.S. imaging air Cherenkov telescope in observations of the Galactic Center (GC) region. In 2012, phase II of H.E.S.S. started with the...
Roberto Ruiz De Austri
(IFIC)
26/06/2014, 09:00
Presentation
I review the present status of Global Fits of Supersymmetry.
Mikhail Shaposhnikov
(EPFL)
26/06/2014, 09:30
Presentation
Heavy neutral leptons may play an important role in particle physics and cosmology,
explaining neutrino masses, dark matter and baryon asymmetry of the universe.
The prospects for their experimental searches will be discussed.
Christophe Grojean
(ICREA - Institucio catalana de recerca estudis avancats (ES))
26/06/2014, 10:00
Presentation
With the discovery of the long sought-after Higgs boson at CERN in July 2012, a new state of matter and a new dynamical principle have been revealed as essential building blocks of the fundamental laws of physics. The Brout-Englert-Higgs mechanism also provides a solution to the half-century-old mass conundrum, i.e. the apparent incompatibility between the mass spectrum of the elementary...
Lars Bergstrom
(Stockholm University)
26/06/2014, 11:00
Presentation
Astroparticle physics is by now a mature field of physics, bridging astrophysics, cosmology, nuclear and particle physics. This talk will deal with what has been accomplished and what the outstanding questions are. An overview is given, containing some thoughts about how to best obtain the answers to the unsolved questions, given realistic technological advancements and financial resources.
Rolf Heuer
(CERN)
26/06/2014, 11:45
Presentation
The talk will present the ongoing scientific program at CERN and will give an outlook towards possible future projects.
Particular emphasis will be given to the European Strategy for Particle Physics and its implications for the particle physics program at CERN and worldwide.
Wim De Boer
(KIT - Karlsruhe Institute of Technology (DE))
26/06/2014, 13:45
A survey of the diffuse gamma-ray sky revealed 'bubbles' of emission above and below the Galactic disc symmetric around the centre of the Milky Way, so they are presumed to be from the centre with a height of 10 kpc. They have been proposed to be blown by cosmic rays originating from the star formation in the Galactic Centre, or jet activity from the supermassive black hole in the GC, or even...
Stephen Portillo
(Harvard University)
26/06/2014, 14:25
The Large Area Telescope on the Fermi Gamma-ray Space Telescope has a point spread function with large tails, consisting of events affected by tracker inefficiencies, inactive volumes, and hard scattering; these tails can make source confusion a limiting factor. The parameter CTBCORE, available in the publicly available Extended Fermi-LAT data, estimates the quality of each event's direction...
Dr
Julien Billard
(MIT)
26/06/2014, 14:30
Dark Matter Direct Detection
The SuperCDMS experiment has operated a 9kg array of cryogenic detectors to search for weakly interacting massive particles (WIMPs) in the Soudan Underground Lab since early 2012. We have recently finished analyzing 600 kg-d of low-energy data on a subset of detectors with an energy threshold of 1.6 keVnr. The use of the athermal phonon measurement provides position sensitivity, and therefore...
Prof.
Guenakh Mitselmakher
(University of Florida)
26/06/2014, 14:30
Results of studies at the LHC collider by the CMS and ATLAS experiments of the recently discovered Higgs boson are presented. The measured properties of the new particle are consistent with the predictions of the Standard Model.
Renjie Wang
(Northeastern University (US))
26/06/2014, 14:50
The results from searching for invisible decay of Higgs bosons at LHC are presented. No significant excess is found beyond the Standard Model prediction, and new limits are set on the production cross section times invisible branching fraction, as a function of the Higgs boson mass, using a combination of data collected in proton-proton collisions at center-of-mass energies of 7 TeV and 8 TeV...
Francesca Calore
(University of Amsterdam)
26/06/2014, 14:55
Gamma-Ray Astrophysics
Recently, a spatially extended excess of gamma rays compatible with a DM signal from the inner region of the Milky Way has been claimed by different and independent groups, using Fermi LAT data. Yet, final statements about the morphology and spectral properties of such an extended diffuse emission are under debate, given the high complexity of this sky region. In this talk I will present an...
Mr
Thomas Lacroix
(Institut d'Astrophysique de Paris (IAP))
26/06/2014, 15:05
An excess of gamma rays at GeV energies has been detected in the Fermi-LAT data. This signal comes from a narrow region around the Galactic Center and has been interpreted as possible evidence for light (10-30 GeV) dark matter particles annihilating either into a mixture of leptons-antileptons and $b\bar{b}$ or into $b\bar{b}$ only. Focussing on the prompt gamma-ray emission, previous work...
Johann Collot
(Centre National de la Recherche Scientifique (FR))
26/06/2014, 15:10
The discovery of a Higgs boson, consistent with the Standard Model, has heralded a new era in which fundamental scalar fields may be safely called to play a central rôle to solve long-lasting physics questions : grand unification of forces, supersymmetry, dark matter, cosmic inflation... To express it in other words, if the sophisticated Brout-Englert-Higgs mechanism really works as we believe...
Jonathan Davis
(IPPP, Durham University)
26/06/2014, 15:15
Data from the CoGeNT experiment has been claimed to be compatible with a light Dark Matter particle scattering off nucleons, to a significance of approximately 2.5 sigma. I will critically assess this possibility, using the methods introduced in arXiv:1405.0495. I present a Bayesian and frequentist analysis of CoGeNT data, with particular focus on the removal of surface events. By...
Martin Vollmann
26/06/2014, 15:15
Gamma-Ray Astrophysics
In this brief presentation, I will discuss how cosmic-ray and radio observations impose stringent constraints on dark matter (DM) candidates with masses in the ~1-50 GeV range. We find strong bounds on DM annihilating into light leptons, or democratically into all leptons from cosmic ray positron data, while complementarily, cosmic ray antiproton and radio data show considerable tension with...
Dr
Alex Geringer-Sameth
26/06/2014, 15:25
Gamma-Ray Astrophysics
I will present the latest results from a search for dark matter annihilation in a large sample of Milky Way dwarf galaxies. Nearly 6 years of data from the Fermi Gamma-ray Space Telescope are analyzed by weighting individual photons based on their spatial and spectral properties. Such searches are powerful enough to probe the relic abundance cross section for some dark matter masses. I will...
Jernej F. Kamenik
(Jozef Stefan Institute)
26/06/2014, 15:30
Particle Physics
We investigate the impact of hypothetical new neutral light particles on the tiny width of a light Higgs boson. Reviewing the possible signatures in the Higgs decay modes with missing energy, in many cases simply preventing these modes from being dominant suffices to set tight model-independent constraints on the masses and couplings of the new light states. We then apply this analysis to...
Dr
Martin Lemoine
(Institut d'Astrophysique de Paris)
26/06/2014, 15:35
The origin of the highest energy cosmic rays with energy >~ 10^{18}eV is a rather intricate puzzle, with a central question: how to accelerate particles to extreme energies ~10^{20}eV or more, and in which astrophysical source? Other questions arise as well, such as: are these cosmic rays protons or nuclei? Why is there no powerful source in the arrival directions of the highest energy cosmic...
Lars Bergstrom
(Stockholm University)
26/06/2014, 15:35
Gamma-Ray Astrophysics
Reyco Henning
(UNC Chapel Hill)
26/06/2014, 15:35
The MAJORANA DEMONSTRATOR is an array of natural and enriched high purity germanium detectors that will search for the neutrinoless double-beta decay of germanium-76 and perform a search for WIMPs with masses below 10 GeV. As part of the MAJORANA research and development efforts, we have deployed a modified, low-background broad energy germanium detector at the Kimballton Underground Research...
Prof.
Matthew Walker
(CMU)
26/06/2014, 16:30
The Local Group's dwarf galaxies represent the lower limit of galaxy formation. Inferences about the amount and spatial distribution of dark matter within these objects has can provide tests of cosmological models and predictions for indirect detection experiments. I will summarize current observational constraints and discuss prospects for improvement.
Thomas David Jacques
(Universite de Geneve (CH))
26/06/2014, 16:30
As beyond-standard-model physics continues to elude discovery at the LHC, it becomes increasingly important to ask what we can learn about dark matter in a model-independent way. Effective Field Theories have become popular as a way construct model-independent constraints on dark matter, but at LHC energies it is crucial to understand their significance and limitations. I will present ways to...
Ms
Patricia Villar
(PhD Fellow)
26/06/2014, 16:30
Dark Matter Direct Detection
The ANAIS (Annual Modulation with NaI(Tl) Scintillators) experiment aims at the confirmation of the DAMA/LIBRA signal using the same target and technique at the Canfranc Underground Laboratory. 250 kg of ultrapure NaI(Tl) crystals will be used as a target, divided into 20 modules, each coupled to two photomultipliers. Two NaI(Tl) crystals of 12.5 kg each, grown by Alpha Spectra from a powder...
Andrea De Simone
(CERN),
Andrea De Simone
(Ecole Polytechnique Federale de Lausanne (CH))
26/06/2014, 16:50
Particle Physics
I discuss alternatives to Effective Field Theory to pursue dark matter searches at the LHC, and propose some benchmark scenarios
for fairly model-independent strategies that LHC experiments can follow in the investigation of DM.
Dr
Jorge Penarrubia
(Royal Observatory Edinburgh)
26/06/2014, 16:50
Dwarf spheroidal galaxies are the faintest galaxies in the Universe and as such play a fundamental role in galaxy formation models. In addition, their internal kinematics suggest the presence of large amounts of non-baryonic matter on very small scales. In models where dark matter (DM) consists of exotic particles formed shortly after the Big Bang, the high phase-space densities inferred in...
Dr
Foot Robert
(School of Physics, University of Melbourne)
26/06/2014, 17:10
Dark Matter Direct Detection
A duplicate set of particles and forces (mirror particles) are required if nature obeys an exact parity symmetry. Mirror baryons are a candidate for the inferred dark matter of
the Universe. The only new parameter postulated is photon - mirror photon kinetic mixing of strength $\epsilon \sim 10^{-9}$. Recent work indicates that such a theory might be capable of explaining galactic structure...
Dr
Emanuele Re
(University of Oxford)
26/06/2014, 17:10
I will discuss theoretical uncertainties in predictions for "mono-jet" signals, and show how these predictions can be affected by extra radiation due to QCD emissions. I'll present results obtained by matching parton showers with NLO corrections, as implemented in the publicly-available MC program POWHEG-BOX, that I will quickly overview.
Time permitting, I'll also show how further...
Dr
Oleg Ruchayskiy
(Ecole Polytechnique Federale de Lausanne)
26/06/2014, 17:30
Analyses of the cosmic microwave background anisotropies and of galaxy
survey data allow for the possibility that dark matter particles were
born relativistic yet became non-relativistic well before matter-radiation
equality. Such "warm" or "cold plus warm" dark matter models may still
have observable signatures at sub-Mpc scales, e.g. modifying the structure of
galactic halos and their...
Valerio Rossetti
(Stockholm University (SE))
26/06/2014, 17:30
We present results by the ATLAS and CMS experiments on a search for new phenomena in pp collision events with one high momentum jet and large missing transverse energy. The data are compared to the SM prediction of the background, dominated by the W/Z+jets production with neutrinos and mis-reconstructed charged leptons in the final state. The results are interpreted in the context of different...
Mrs
Martinez Maria
(Universidad de Zaragoza)
26/06/2014, 17:30
Dark Matter Direct Detection
The CUORE (Cryogenic Underground Observatory for Rare Events) experiment, currently under construction at the Gran Sasso National Laboratory (LNGS), will operate 988 TeO$_2$ bolometers at a temperature of around 10 mK, adding up a total mass of 750 kg. CUORE-$0$, a 52 TeO$_2$ bolometers array built using the same protocols developed for CUORE, is currently in operation at LNGS and has recently...
Angela Olinto
(The University of Chicago)
26/06/2014, 17:35
Thanks to giant extensive air-showers observatories, such as the Pierre Auger Observatory and the Telescope Array, we now know that the sources of ultrahigh energy cosmic rays (UHECRs) are extragalactic. We also know that either they interact with the CMB as predicted or they run out of energy at the same energy scale of the CMB interactions! Their composition is either surprising (dominated...
Andy Nelson
(University of California Irvine (US))
26/06/2014, 17:50
Searches for mono-W and Z bosons are presented in the hadronic+MET and dileptonic+MET channels using the ATLAS experiment and the mono-lepton+MET channel using CMS at the Large Hadron Collider. The full 2012 data set produced at a center of mass energy of 8 TeV is used comprising 20 fb-1. No statistically significant deviation from the Standard Model is observed. Limits are set on the mass...
Ms
Kyungwon Kim
(Center for Underground Physics (IBS))
26/06/2014, 17:50
KIMS-NaI is a dark matter search experiment using NaI(Tl) as a scintillating crystal at the Yangyang underground laboratory to verify the DAMA experiment. Two NaI(Tl) crystals grown from different powders and with different sizes are used in a test experiment. The crystals coupled to two PMTs that have high quantum efficiency were surrounded by twelve CsI(Tl) crystal used for KIMS-CsI...
Stijn Buitink
(Radboud University Nijmegen)
26/06/2014, 18:00
It is generally believed that ultra-high-energy cosmic rays are produced in extragalactic sources like gamma-ray bursts or active galactic nuclei, while the lower energy cosmic rays come from our own Galaxy. At what energy the transition from Galactic to extragalactic origin takes place is still a mystery, but most models place it somewhere between $10^{17}$ and $10^{19}$ eV. With LOFAR we can...
Neil Spooner
(University of Sheffield)
26/06/2014, 18:10
Astrophysical observations and cosmological data give overwhelming evidence that the majority of the mass of the Universe is comprised of dark matter. For over 15 years, the DAMA collaboration has asserted that they observe a dark matter-induced annual modulation in their data. Several alternative hypotheses have been proposed as explanations for the observation of an annual modulation...
Aaron Ludlow
(Argelander-Institut fuer Astronomie)
26/06/2014, 18:10
I will discuss the relation between the accretion history and mass
profile of cold dark matter (CDM) haloes, emphasizing how an appropriate
definition of their formation times can be used to determine their
characteristic radii. This result is based on the finding that the
average mass accretion history, expressed in terms of the critical
density of the Universe, resembles the enclosed...
Prof.
Jörg Hörandel
(Radboud University Nijmegen/Nikhef)
26/06/2014, 18:15
High-energy cosmic rays impinging onto the atmosphere of the Earth initiate cascades of secondary particles: extensive air showers. The electrons and positrons in air showers interact with the geomagnetic field and emit radiation, which we record in the tens-of-MHz regime. Radio emission from air showers is measured with the Auger Engineering Radio Array (AERA) at the Pierre Auger Observatory...
Prof.
Joerg Jaeckel
27/06/2014, 09:00
Presentation
Very light bosons, produced non-thermally in the early Universe are an intriguing possibility for the cold dark matter of the Universe.
Particularly interesting candidates are axions, axion-like particles and hidden photons. This talk will discuss the current status of such light dark matter with a particular emphasis towards opportunities for its detection.
Tim Tait
(University of California, Irvine)
27/06/2014, 09:30
Presentation
I will review the impact of the LHC program on our understanding of particle dark matter.
Prof.
Jonathan Feng
(UC Irvine)
27/06/2014, 10:00
The idea that dark matter resides in a dark sector, accompanied by other dark particles and forces, has many realizations. I will discuss a number of these, focusing on several motivated by recent experiments, observations, and simulations.
Torsten Bringmann
(Hamburg University)
27/06/2014, 11:00
Presentation
One of the main strategies to probe the particle nature of dark matter is the identification of possible contributions from the annihilation or decay of these particles in the spectrum of cosmic rays and radiation. A wealth of observational data, both existing and upcoming, makes this a very timely and active approach that starts to rule out the most popular models in a way that is...
Valerio Vagelli
(KIT - Karlsruhe Institute of Technology (DE))
27/06/2014, 11:30
Presentation
The AMS-02 detector is a wide acceptance high-energy physics experiment operating since May 2011 onboard of the International Space Station. It consists of six complementary sub-detectors providing measurement on the energy, the mass and the charge leading to an unambiguous identification of the cosmic rays. To date, more than 40 billion cosmic ray events have been collected. Performance of...
Vincent Francois Giangiobbe
(IFAE-Barcelona (ES))
27/06/2014, 12:00
Presentation
The existence of Dark Matter (DM) is by now well established, and the fit of the cosmological model parameters to various measurements lead to a density of the cold non-baryoninc matter representing 26.5% of the critical density. Despite this relatively large density, the nature of the DM remains unknown. Amongst the preferred candidates for DM are the Weakly Interacting Massive Particles...
Jim Brooke
(University of Bristol (GB))
27/06/2014, 12:20
Presentation
Searches for a wide range of physics beyond the Standard Model have been performed using CMS at the LHC. Final results from the 7 and 8 TeV datasets will be presented. The presentation will cover results on Supersymmetry, direct production of dark matter, new resonances, large extra dimensions, long lived particles and other exotic new physics. Some prospects of the future discovery potential...
Thomas Schwetz-Mangold
(Stockholm University (SE))
27/06/2014, 14:30
Neutrinos
I will discuss the status of several hints for sterile neutrinos at the eV scale. While those hints point towards a similar neutrino mass scale various constraints on the mixing angles make it difficult to obtain a good description of all data simultaneously. I will review the situation from oscillation experiments and mention briefly additional constraints from cosmology.
Christopher McCabe
27/06/2014, 14:30
Particle Physics
Interplay of direct, indirect and collider searches
Silvia Scorza
(KIT)
27/06/2014, 14:30
Dark Matter Direct Detection
EDELWEISS is a direct dark matter search situated in the low radioactivity environment of the Modane Underground Laboratory.
The experiment uses Ge detectors operated at 20 mK in a dilution refrigerator in order to identify eventual rare nuclear recoils induced by elastic scattering of WIMPs from our Galactic halo.
I will describe the current EDELWEISS-III program, including improvements of...
Daniela Hadasch
(University of Innsbruck)
27/06/2014, 14:30
MAGIC is a system of two atmospheric Cherenkov telescopes located in the Canary island of La Palma.
MAGIC has low energy threshold, down to 50 Gev, well suited to study the still poorly explored energy band below 100 GeV. Although the space-borne gamma-ray telescope Fermi/LAT is sensitive up to 300 GeV, gamma-ray rates drop fast with increasing energy, and statistics are scarce above few...
fabio iocco
(Instituto de Fisica Teorica)
27/06/2014, 14:40
We use a new compilation of data for the Rotation Curve of our own Galaxy in order to assess evidence for a Dark component of matter. We construct the rotation curve expected from a large sample of models of the baryonic (star and gas) component of the Milky Way, and infer the missing component with high statistical evidence. This model-independent approach shows evidence for a dark component...
Maria Archidiacono
(Aarhus University)
27/06/2014, 14:50
In the last few years the imprint of light sterile neutrinos on cosmological data sets has been deeply investigated within the framework of different theoretical scenarios. Nevertheless the question whether cosmology can accommodate the existence of additional neutrinos is still open. The strong dependence of the results on the underlined cosmological model and on the included data sets...
Dr
Brian Feldstein
(University of Oxford)
27/06/2014, 14:50
Abstract: I will discuss the implications of hypercharged dark matter, which is a generic possibility which leads to very large scattering cross sections at direct detection experiments. In fact, current and planned experiments are probing masses for such particles up to an amazing $10^8-10^{10}$ GeV. If a detection were made, then the scattering rate would reveal the dark matter mass, and...
Dr
Takashi Toma
(Durham University)
27/06/2014, 14:50
We investigate a Z3 symmetric model with radiative neutrino masses at two loop level. A particle which can be Dark Matter in the model is either of a Dirac fermion or a complex scalar as a result of unbroken Z3 symmetry. In addition to typical annihilation processes of Dark Matter, semi-annihilation processes give an important effect when the relic density is calculated together with some...
Anna Franckowiak
(SLAC/KIPAC)
27/06/2014, 15:00
The Fermi bubbles are two large structures in the gamma-ray sky extending up to 55 deg above and below the Galactic center. We present our analysis of 50 months of Fermi-LAT pass7 reprocessed data from 100 MeV to 500 GeV above 10 deg in Galactic latitude to derive the spectrum and morphology of the Fermi bubbles. We perform a detailed study of the systematic uncertainties due to the modeling...
Luca Panizzi
(University of Southampton)
27/06/2014, 15:05
Searches for events with Missing Transverse Energy at the LHC are among the most powerful methods for the identification of Dark Matter candidates. For this purpose, selection and kinematic cuts have often been designed assuming that the mass hierarchies between the Dark Matter candidate and strongly-interacting states of the model are large, as it is generally the case in supersymmetric...
Shin-Ted LIN
(Sichuan University)
27/06/2014, 15:10
Dark Matter Direct Detection
We present the latest results on light Dark Matter WIMP searches at China Jinping Underground Laboratory from a p-type point-contact germanium detector enclosed by a NaI(Tl) anti-Compton detector. An order of magnitude improvement in the sensitivities for low-mass WIMP searches over our previous results is achieved. The analysis procedures of our results as well as the status and perspectives...
Mr
Tom Richardson
(King's College London)
27/06/2014, 15:20
Detailed measurements of the dark matter density profile in systems such as dwarf galaxies and galaxy clusters would allows us to test predictions from N-body simulations of cold dark matter and how complex astrophysical effects and interactions with baryons may have reshaped dark matter halos. Traditionally, the Jeans equation is used to constrain the dark matter density profile in spherical...
Douglas Finkbeiner
(Harvard University)
27/06/2014, 15:20
The strongest WIMP annihilation signals are expected from the inner
Milky Way, but foreground contribution from cosmic-ray interactions
with the gas and radiation field are strongest there as well.
Therefore, indirect detection has been hampered by insufficient
knowledge of the diffuse gamma-ray foregrounds. Improved modeling
requires a 3D map of gas and dust (for $\pi^0$ and brem...
Giorgio Busoni
(SISSA, Trieste)
27/06/2014, 15:25
Indirect searches can be used to test dark matter models against expected signals in various channels, in particular antiprotons. With antiproton data available soon at higher and higher energies, it is important to test the dark matter hypothesis against alternative astrophysical sources, {\it e.g. } secondaries accelerated in supernova remnants.
We investigate the degeneracy of the two...
Hau-Bin Li
(Academia Sinica, Taipei, Taiwan)
27/06/2014, 15:30
Dark Matter Direct Detection
Hau-Bin Li, Institute of Physics, Academia Sinica, Taiwan.
(On behalf of the TEXONO Collaboration)
Germanium detectors with sub-keV sensitivities can probe low-mass WIMP Dark Matter. This experimental approach is pursued at the Kuo-Sheng Neutrino Laboratory (KSNL) in Taiwan and at the China Jinping Underground Laboratory (CJPL) in China via the TEXONO and CDEX programs, respectively. The...
Mr
Camilo Garcia Cely
(Technical University Munich)
27/06/2014, 15:40
The Inert Doublet Model contains a neutral stable particle which is a viable dark matter candidate.
I will discuss the indirect signatures of this model in gamma-rays when the dark matter mass is at the TeV scale.
In particular, I will consider the interplay between the annihilation process into two photons and the internal
bremsstrahlung process $DM DM \to W^+W^- \gamma$. I will show that...
Dr
Aurel Schneider
(University of Sussex)
27/06/2014, 15:40
I will discuss the scenario of sterile neutrino dark matter produced by decays of heavy scalars. This is an ideal toy example to illustrate how the production of dark matter influences the formation of structures in the universe.
Valentina De Romeri
(CNRS)
27/06/2014, 15:45
We investigate the contribution of sterile states to the anomalous magnetic and electric dipole moments of charged leptons. Furthermore, as a specific example, we study this effect in a low-scale seesaw model. We perform a complete numerical study scanning the relevant parameter space of the models.
Federico Izraelevitch
(Fermilab)
27/06/2014, 15:50
Dark Matter Direct Detection
DAMIC is a novel dark matter search experiment that has a unique sensitivity to hypothetic dark matter particles with masses below 10 GeV. Due to the CCD's low electronic readout noise (R.M.S. ~ 3 electrons), this instrument is able to reach a detection threshold of 60 eV, suitable for the search in the low mass range. The excellent energy response and high spatial resolution of a CCD image...
Joern Kersten
(University of Bergen)
27/06/2014, 16:30
Despite the astonishing success of standard $\Lambda$CDM cosmology, there is mounting
evidence for a tension with observations at small and intermediate scales (missing satellites, cusp vs. core and too big to fail problems). We introduce a simple model where both cold dark matter (DM) and sterile neutrinos are charged under a new $U(1)_X$ gauge interaction. The resulting DM...
Prof.
Jocelyn Monroe
(MIT)
27/06/2014, 16:30
The Dark Matter Time Projection Chamber (DMTPC) collaboration is developing a low-pressure TPC with optical and charge readout for direction-sensitive dark matter detection, in order to correlate a dark matter candidate nuclear recoil signal, in a detector deep underground, with the earth's motion through the galactic dark matter halo. The unique angular signature of the dark matter wind,...
Douglas Cowen
(Pennsylvania State University)
27/06/2014, 16:30
The Precision IceCube Next Generation Upgrade (PINGU) is a proposed IceCube in-fill array designed to measure the neutrino mass hierarchy using atmospheric neutrino interactions in the ice cap at the South Pole. PINGU will have a neutrino energy threshold of a few GeV with a multi-megaton effective volume. We present PINGU's expected sensitivity to the hierarchy with optimized geometry and...
Glennys Farrar
(NYU)
27/06/2014, 16:30
Particle Physics
The H dibaryon is a potentially very deeply-bound 6-quark state — uuddss -- with a mass of ~1.5 GeV. It is a spin-0, flavor-singlet, scalar carrying baryon-number of 2. As will be reviewed, such a particle would have evaded detection in accelerator and other searches. (Preliminary lattice simulations show it is deeply bound compared to other 6-quark states, but they are not yet good enough...
Iason Baldes
(University of Melbourne)
27/06/2014, 16:45
Common mechanisms invoked to explain particle antiparticle asymmetries involve the out-of-equilibrium and CP violating decay of a heavy particle. In this talk I discuss the role CP violating $2 \leftrightarrow 2$ annihilations can play -- together with the usual $1 \leftrightarrow 2$ decays and inverse decays -- in determining the final asymmetry. I will present a simple toy model to point out...
Michael Schmidt
(The University of Melbourne)
27/06/2014, 16:50
To unravel the mystery of neutrino masses and mixing angles, we adopt a bottom-up approach based on effective operators which violate lepton number by two units. By opening the effective operators, we can find the corresponding minimal UV completions. We discuss how the minimal UV completions of the dimension-7 operators can be tested at the LHC as well as one example based on a dimension-9 operator.
Neil Spooner
(University of Sheffield)
27/06/2014, 16:50
The DRIFT (directional recoil identification from tracks) concept is currently the most sensitive technique being developed with capability to observe a galactic signature for WIMP dark matter by measuring the direction of WIMP-induced nuclear recoils in a gas. The collaboration is well advanced in the design and testing of a next generation experiment, DRIFT III, comprising up to 24 m3...
Dr
Katarina Markovic
(University of Manchester)
27/06/2014, 16:50
Warm Dark Matter (WDM) is a generalisation of the standard Cold Dark Matter model in the sense that it does not assume dark matter particles to be absolutely cold. In the simplest models all dark matter is made of the same particles, which started out in thermal equilibrium and cooled to effectively become cold today. If such particles have masses of the order of a keV or less, they leave an...
Dr
Emiliano Molinaro
(TUM)
27/06/2014, 17:00
The scotogenic model is one of the simplest scenarios for physics beyond
the Standard Model that can account for neutrino masses and dark matter at
the TeV scale. It contains another scalar doublet and three additional singlet
fermions (Ni), all odd under a Z2 symmetry. We examine
the possibility that the dark matter candidate, N1, does not reach thermal
equilibrium in the early Universe...
Paolo Panci
(Institute d'Astrophysique de Paris (IAP))
27/06/2014, 17:10
Dark Matter Direct Detection
Direct searches for Dark Matter (DM) aim at detecting the nuclear recoils arising from a scattering between DM particles and target nuclei in underground detectors. Since the physics that describes the collision between DM particles and target nuclei is deeply non-relativistic, in this presentation I’ll review a different and more general approach to study signal in direct DM searches based on...
Aurora Meroni
(Università Roma Tre/LNF)
27/06/2014, 17:10
Determining the nature - Dirac or Majorana - of massive neutrinos, possibly related to a New Physics scale beyond that predicted by the Standard Model is a fundamental problem under study. Significant experimental efforts have been made to unveil the possible Majorana nature of massive neutrinos by searching for neutrinoless double beta decay with increasing sensitivity. These constraints,...
Csaba Balazs
(Monash University)
27/06/2014, 17:15
I present a model independent analysis of thermal dark matter constraining its mass and interaction strengths with data from astro- and particle physics experiments. Using effective field theory to describe interactions of dark matter particles I cover real and complex scalar, Dirac and Majorana fermion, and vector boson dark matter candidates. I show posterior probability distributions for...
Dr
Jan Heisig
(RWTH Aachen University)
27/06/2014, 17:30
Supersymmetric scenarios where the lightest superparticle (LSP) is the gravitino are an attractive alternative to the widely studied case of a neutralino LSP. A strong motivation for a gravitino LSP arises from the possibility of allowing higher reheating temperatures which are required by thermal leptogenesis and can be considered more likely in the light of the recently reported BICEP2 data....
Kiseki Nakamura
(Kyoto University)
27/06/2014, 17:50
NEWAGE is a direction sensitive WIMP search experiment using micro pixel chamber. After our first underground measurement at Kamioka (PLB686(2010)11), we constructed new detector, NEWAGE-0.3b'. NEWAGE-0.3b' was designed to have a twice larger target volume with low background material, a lowered threshold of $50\,\rm keV$, an improved data acquisition system, and a gas circulation system with...
Dr
Kwang-Chang Lai
(Chang Gung University)
27/06/2014, 17:50
The determination of neutrino flavor transition mechanism by neutrino telescopes is presented. With a model-independent parametrization, we are able to classify flavor transitions (such as standard three-flavor oscillations, neutrino decays or others) of astrophysical neutrinos propagating from their sources to the Earth. We demonstrate how one can constrain parameters of the above...
Prof.
Annika Peter
(The Ohio State University)
27/06/2014, 17:50
The simplest phenomenological model for cosmological dark matter is the “cold dark matter” (CDM) model. This model assumes that dark matter is cold, collisionless, and stable. Recently, these three tenets of CDM have been challenged on both observational and theoretical grounds. In this talk, I present a review of recent work on investigations into the stability of dark matter. I consider...
Patrick Steppeler
(WWU Münster)
27/06/2014, 18:00
A powerful method to constrain the MSSM parameter space is to compare the predicted dark matter relic density with cosmological precision measurements, in particular the Planck data. On the particle physics side, the main uncertainty for a given spectrum arises from the (co-)annihilation cross sections of the dark matter particle. After a motivation for including higher order corrections in...
170.
Determination of (sterile/active) neutrino absolute masses in Hyper-K by detecting SN neutrinos
Kazunori Kohri
(K)
27/06/2014, 18:10
TBD
Mr
Nguyen Phan
(University of New Mexico)
27/06/2014, 18:10
Dark Matter Direct Detection
Can directional detection provide any input to the low mass WIMP region? We will show results from measurements of low energy recoils using a low pressure optical TPC which demonstrates the capabilities of a realistic directional detector. Results from those measurements are extrapolated to find the detector characteristics most suitable for low mass WIMP searches. Finally, some preliminary...
Mr
Ryan Wilkinson
(IPPP, Durham University)
27/06/2014, 18:10
Despite the large number of dedicated experiments, an understanding of the particle nature of dark matter and direct evidence for its existence have remained elusive. However, detection methods generally assume that dark matter consists of cold, massive particles. In this talk, I will discuss how cosmological data from the CMB and Large-Scale Structure can be used to study dark matter...
Mr
Michele Re Fiorentin
(University of Southampton)
27/06/2014, 18:15
I will briefly review the main aims and concepts of leptogenesis, analysing different possible realisations. Particular attention will be devoted to the so-called $N_2$-dominated scenario, both in its unflavoured and flavoured versions. Its main features will be pointed out, as well as the impact of possible relevant corrections. I will then consider the conditions required by strong thermal...
John Beacom
(Ohio State University)
28/06/2014, 09:00
Presentation
The great promise of neutrino astronomy has been known for decades, though it seemed impossibly out of reach. With neutrinos, we would reveal the insides of astrophysical objects, the high particle energies in the engines that power them, and the original timescales on which those engines evolve. In contrast, with photons, we see just the outsides of these objects, with spectra downgraded by...
Maarten De Jong
(NIKHEF (NL))
28/06/2014, 09:30
Presentation
KM3NeT is a new research infrastructure consisting of a cabled network of deep-sea neutrino telescopes in the Mediterranean Sea.
The main objective of KM3NeT is the discovery and subsequent observation of high-energy neutrino sources in the Universe.
Three suitable deep-sea sites have been identified, namely off-shore Toulon (France), Capo Passero (Italy) and Pylos (Greece).
The list of...
Prof.
Elisa Resconi
28/06/2014, 10:00
Presentation
The neutrino observatory IceCube is opening a new observational window to the Universe.
IceCube, which has been fully constructed in the icecap at the South Pole, is taking data since
Spring 2011 in full configuration. The first years of data reveled the existence of
extremely high-energy neutrinos at the hundreds of TeV up to the PeV scale, which are of astrophysical origin.
In this...
Esteban Roulet
(C)
28/06/2014, 11:00
I will review the present results on Ultra-High energy cosmic rays and discuss the Astrophysical scenarios that could account for them as well as the possible connections to lower energy results and the prospects for the future.
Dr
Heino Falcke
28/06/2014, 11:30
Prof.
Alessandra Buonanno
28/06/2014, 12:00
Presentation
In the next 5 years, ground-based interferometers such as advanced
LIGO, Virgo and KAGRA, are likely to provide the first direct detections of
gravitational waves. This will constitute a major scientific discovery, as
it will permit a new kind of observation of the cosmos, quite different from
today's electromagnetic and particle observations. In this talk I will review
the current...
Sabrina Casanova
(Max Planck fuer Kernphysik)
Cosmic Rays
Presentation
We solve the transport equations of cosmic rays inside a molecular cloud assuming an arbitrary energy and space dependent diffusion coefficient. Cosmic rays penetrating the cloud produce gamma-ray emission through pp collisions with the ambient gas. We study the influence of the gas density profile on the gamma-ray emission and we present predictions for present and future telescopes to...
Jonathan Cornell
(Stockholm University)
Particle Physics
Presentation
The recent discovery of a Higgs boson with mass of about 126 GeV, along with its striking similarity to the prediction from the standard model, informs and constrains many models of new physics. The Higgs mass exhausts one out of three input parameters of the minimal, five-dimensional version of universal extra dimension models, the other two parameters being the Kaluza-Klein (KK) scale and...
Giuliana Fiorillo
(Universita e INFN (IT))
Dark Matter Direct Detection
Presentation
DarkSide-50 (DS-50) at Gran Sasso underground laboratory, Italy, is a direct dark matter search experiment based on a TPC with liquid argon from underground sources. The DS-50 TPC, with 50 kg of active argon and a projected fiducial mass of >33 kg, is installed inside an active neutron veto based on a boron-loaded organic scintillator. The neutron veto is built inside a water cherenkov muon...
Prof.
Simon White
Presentation
