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

Author(s)
Anderson, Andrew J.; Figueroa-Feliciano, Enectali; Hertel, Scott Alexander; Leman, Steven W.; McCarthy, Kevin Ahmad
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Abstract
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 ∼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[superscript 2]. These data set an upper limit of 1.7×10[superscript -41]  cm[superscript 2] on the WIMP-nucleon spin-independent cross section of a 10  GeV/c[superscript 2] WIMP. These data exclude parameter space for spin-independent WIMP-nucleon elastic scattering that is relevant to recent searches for low-mass WIMPs.
Date issued
2013-08
URI
http://hdl.handle.net/1721.1/81360
Department
Lincoln Laboratory; Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review D
Publisher
American Physical Society
Citation
Agnese, R., Z. Ahmed, A. J. Anderson, S. Arrenberg, D. Balakishiyeva, R. Basu Thakur, D. A. Bauer, et al. “Silicon detector results from the first five-tower run of CDMS II.” Physical Review D 88, no. 3 (August 2013). © 2013 American Physical Society
Version: Final published version
ISSN
1550-7998
1089-4918

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