Dr
Steven Leman
(MIT)
18/03/2011 08:30
Experiment
Ordinary
Two different, previously released, Cryogenic Dark Matter Search (CDMS) data sets have been reanalyzed to improve sensitivity to low-mass Weakly Interacting Massive Particle (WIMP) signals. The first data set was obtained from 2001 to 2002 at the shallow-depth Stanford Underground Facility (SUF) with four germanium and two silicon detectors. The second data set utilized eight germanium...
M.
ANDREAS GOUDELIS
(DESY - Hamburg)
18/03/2011 08:50
Theory
Ordinary
We shall examine the dark matter phenomenology in supersymmetric light higgs boson scenarios, starting from a MSSM variant with non-universal Higgs masses at the GUT-scale. The correct relic density is obtained mostly through the annihilation into a pseudoscalar A. We shall see that most part of the A pole region can produce significant gamma-ray and antiproton signals and comment on the...
Dr
Aaron Manalaysay
(University of Zurich)
18/03/2011 09:10
Experiment
Ordinary
The field of dark matter direct detection has seen important contributions in recent years from experiments involving liquid noble gases, specifically liquid argon and liquid xenon. These detection media offer many properties deemed useful in this search, including fast scintillation response, charge readout, 3-D position reconstruction, and nuclear recoil discrimination. Part of the very...
Dr
Michel Tytgat
(ULB - Université Libre de Bruxelles)
18/03/2011 09:35
Theory
Ordinary
Recently there has been some excitement regarding the possibility of a light dark matter candidate, M sim few GeV. This is mostly related to the DAMA/Libra, and more recently, the CoGeNT results. In this talk I consider possible indirect constraints on such candidates based on the first 11 months Fermi-LAT data. Specifically, I consider the relevance of gamma-rays from galactic dwarf...
Dr
Ana Torrento
(CEA - Saclay)
18/03/2011 09:55
Experiment
Ordinary
The EDELWEISS-II collaboration has performed a direct search for WIMP dark matter with an array of ten 400 g heat-and-ionization cryogenic detectors equipped with interleaved electrodes for the rejection of near-surface events. Results from eleven months of continuous operation at the Laboratoire Souterrain de Modane will be shown and their interpretation in terms of limits on the...
Dr
C Eric Dahl
(University of Chicago)
18/03/2011 10:35
Experiment
Ordinary
The COUPP collaboration uses bubble chambers to search for WIMP dark matter. These bubble chambers are sensitive to the ~10 keV nuclear recoils produced by WIMP scattering, but completely insensitive to the gamma and beta backgrounds that limit most dark matter direct detection experiments. Recent developments in acoustic discrimination between nuclear recoils and alpha decays have led to...
Dr
Joachim Kopp
(Fermilab)
18/03/2011 10:55
Experiment
Ordinary
We analyze LEP monophoton data to set limits on the Dark Matter (DM) production cross section in the process e+e- --> \chi \chi \gamma, where \chi is the DM particle. We then translate these limits into constraints on the DM-nucleon and DM-electron scattering cross sections and on the DM annihilation cross sections. In doing so, we consider different types of DM interactions (scalar, vector,...
Dr
Timur Delahaye
(IFT Madrid)
18/03/2011 11:15
Theory
Ordinary
Recent results from direct detection experiments (Dama, CoGeNT, CRESST), though subject to debate, seem to point toward a low mass (few GeV) dark matter (DM) particle. However, low mass DM candidates are not easily achieved in the MSSM nor NMSSM. As shown by some authors, singlet extensions of the MSSM can lead to GeV mass neutralinos and satisfy relic abundance constraints. We propose here to...
