 DOCUMENT METADATASLAC Publication: SLAC-PUB-15486
SLAC Release Date: May 28, 2013
Dark Matter Search Results Using the Silicon Detectors of CDMS II
Collaboration, CDMS.
We report results of a search for Weakly Interacting Massive Particles (WIMPs) with the silicon detectors of the CDMS II experiment. A blind analysis of 140.2 kg-days of data revealed three WIMP-candidate events with an expected total background of 0.7 events. The probability that the known backgrounds would produce three or more events in the signal region is 5.4%. A profile likelihood ratio test of the three events that includes the measured recoil energies gives a 0.19% probability for the kn... Show Full Abstract
We report results of a search for Weakly Interacting Massive Particles (WIMPs) with the silicon detectors of the CDMS II experiment. A blind analysis of 140.2 kg-days of data revealed three WIMP-candidate events with an expected total background of 0.7 events. The probability that the known backgrounds would produce three or more events in the signal region is 5.4%. A profile likelihood ratio test of the three events that includes the measured recoil energies gives a 0.19% probability for the known-background-only hypothesis when tested against the alternative WIMP+background hypothesis. The highest likelihood occurs for a WIMP mass of 8.6 GeV/c^2 and WIMP-nucleon cross section of 1.9x10^-41 cm^2.
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