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Improved WIMP-search reach of the CDMS II germanium data [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. High Energy Physics Division, 2015.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
Article numbers 072,003 : digital, PDF file
Additional Creators
Fermi National Accelerator Laboratory, United States. Department of Energy. High Energy Physics Division, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
CDMS II data from the five-tower runs at the Soudan Underground Laboratory were reprocessed with an improved charge-pulse fitting algorithm. Two new analysis techniques to reject surface-event backgrounds were applied to the 612 kg days germanium-detector weakly interacting massive particle (WIMP)-search exposure. An extended analysis was also completed by decreasing the 10 keV analysis threshold to ~5 keV, to increase sensitivity near a WIMP mass of 8 GeV/c2. After unblinding, there were zero candidate events above a deposited energy of 10 keV and six events in the lower-threshold analysis. This yielded minimum WIMP-nucleon spin-independent scattering cross-section limits of 1.8×10–44 and 1.18×10–41 at 90% confidence for 60 and 8.6 GeV/c2 WIMPs, respectively. This improves the previous CDMS II result by a factor of 2.4 (2.7) for 60 (8.6) GeV/c2 WIMPs.
Report Numbers
E 1.99:fermilab-pub--15-173-ae
E 1.99: ippp--15-24
E 1.99: dctp--15-48
dctp--15-48
ippp--15-24
fermilab-pub--15-173-ae
Subject(s)
Note
Published through SciTech Connect.
10/12/2015.
"fermilab-pub--15-173-ae"
" ippp--15-24"
" dctp--15-48"
"arXiv eprint number arXiv:1504.05871"
Physical Review. D, Particles, Fields, Gravitation and Cosmology 92 7 ISSN 1550-7998; PRVDAQ AM
Agnese, R.
Funding Information
AC02-07CH11359
View MARC record | catkey: 24048854