Silicon detector results from the first five-tower run of CDMS II

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We report results of a search for weakly interacting massive particles (WIMPs) with the Si detectors of the CDMS II experiment. This report describes a blind analysis of the first data taken with CDMS II's full complement of detectors in 2006-2007; results from this exposure using the Ge detectors have already been presented. We observed no candidate WIMP-scattering events in an exposure of 55.9 kg-days before analysis cuts, with an expected background of similar to 1.1 events. The exposure of this analysis is equivalent to 10.3 kg-days over a recoil energy range of 7-100 keV for an ideal Si detector and a WIMP mass of 10 GeV/c(2). These data set an upper limit of 1.7 x 10(-41) cm(2) on the WIMP-nucleon spin-independent cross section of a 10 GeV/c(2) WIMP. These data exclude parameter space for spin-independent WIMP-nucleon elastic scattering that is relevant to recent searches for low-mass WIMPs.
Publisher
AMER PHYSICAL SOC
Issue Date
2013-08
Language
English
Article Type
Article
Keywords

DARK-MATTER SEARCH; CONSTRAINTS; CANDIDATES

Citation

PHYSICAL REVIEW D, v.88, no.3

ISSN
1550-7998
DOI
10.1103/PhysRevD.88.031104
URI
http://hdl.handle.net/10203/212189
Appears in Collection
PH-Journal Papers(저널논문)
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