Other
Scientific paper
Apr 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aps..apr.i7003h&link_type=abstract
American Physical Society, APS April Meeting, April 22-26, 2006, abstract #I7.003
Other
Scientific paper
Non-baryonic dark matter makes one quarter of the energy density of the Universe. The Weakly Interacting Massive Particle (WIMP) is a dark matter candidate with a scattering cross section with an atomic nucleus of the order of the weak interaction and a mass comparable to that of an atomic nucleus. Results of the two tower run from the Cryogenic Dark Matter Search (CDMS II), consisting of a total exposure of 34 kg-d for germanium and 12 kg-d for silicon, at the Soudan Underground Laboratory are presented. Also we present studies of the neutron background relevant for our upcoming 10-fold more sensitive 5-tower run, as well as for other experiments in search of dark matter. During the two-tower run, no nuclear-recoil events exceeding expected background were observed for a WIMP mass of 60 GeV/c^2. The limit from Ge (Si) is a factor of 2.5 (10) lower than previous results, allowing to set further constraints on the predictions of supersymetric models. Our further studies of the muon-induced neutron background based on Monte Carlo simulations show that by replacing part of the outer polyethylene of the CDMS II shield by a neutron multiplicity meter, for example by Gd-loaded liquid scintillator (0.5% gadolinium content) with a PMT read out would allow us to better predict the absolute number of unvetoed nuclear recoils compared with present methods which rely on multiple nuclear recoil events.
No associations
LandOfFree
Neutron background studies and results from the Cryogenic Dark Matter Search does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Neutron background studies and results from the Cryogenic Dark Matter Search, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neutron background studies and results from the Cryogenic Dark Matter Search will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1158852