Recent results from WIMP-search analysis of CDMS-II data
Abstract
The Cryogenic Dark Matter Search (CDMS-II) experiment, at Soudan Underground Laboratory, used germanium low-temperature particle detectors to search for Weakly Interacting Massive Particles (WIMPs), characterized by elastic nuclear scattering. We report results from the analysis of final data taken with the CDMS-II apparatus. Two events were observed in the signal region. Based on our background estimate, the probability of observing two or more background events is 23%. Combined with previous CDMS-II data, this results in an upper limit on the WIMP-nucleon spin-independent interaction cross-section of 3.8x10^(-44) cm^2 at 90% CL for a 70 GeV/c^2 WIMP. CDMS-II ended operations in March 2009, to be upgraded to SuperCDMS with detectors that are 2.5 times more massive and have improved background rejection. The first set of such detectors has been deployed at Soudan and is taking data.
Additional Information
© 2011 World Scientific. The CDMS collaboration gratefully acknowledges the contributions of numerous engineers and technicians; we would like to especially thank Jim Beaty, Bruce Hines, Larry Novak, Richard Schmitt and Astrid Tomada. This work is supported in part by the National Science Foundation (Grant Nos. AST-9978911, PHY-0542066, PHY-0503729, PHY-0503629, PHY-0503641, PHY-0504224, PHY- 0705052, PHY-0801708, PHY-0801712, PHY-0802575 and PHY-0855525), by the Department of Energy (Contracts DE-AC03-76SF00098, DE-FG02-91ER40688, DE-FG02-92ER40701. DE-FG03-90ER40569, and DE-FG03-91ER40618), by the Swiss National Foundation (SNF Grant No. 20-118119), and by NSERC Canada (Grant SAPIN 341314-07).Attached Files
Published - Ahmed_p530.pdf
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Additional details
- Eprint ID
- 35031
- Resolver ID
- CaltechAUTHORS:20121023-110421077
- AST-9978911
- NSF
- PHY-0542066
- NSF
- PHY-0503729
- NSF
- PHY-0503629
- NSF
- PHY-0503641
- NSF
- PHY-0504224
- NSF
- PHY-0705052
- NSF
- PHY-0801708
- NSF
- PHY-0801712
- NSF
- PHY-0802575
- NSF
- PHY-0855525
- NSF
- DE-AC03-76SF00098
- Department of Energy (DOE)
- DE-FG02-91ER40688
- Department of Energy (DOE)
- DE-FG02-92ER40701
- Department of Energy (DOE)
- DE-FG03-90ER40569
- Department of Energy (DOE)
- DE-FG03-91ER40618
- Department of Energy (DOE)
- 20-118119
- Swiss National Foundation (SNF)
- SAPIN 341314-07
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Created
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2012-11-14Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field