Search for inelastic dark matter with the CDMS II experiment
Abstract
Results are presented from a reanalysis of the entire five-tower data set acquired with the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory, with an exposure of 969 kg-days. The analysis window was extended to a recoil energy of 150 keV, and an improved surface-event background-rejection cut was defined to increase the sensitivity of the experiment to the inelastic dark matter (iDM) model. Three dark matter candidates were found between 25 keV and 150 keV. The probability to observe three or more background events in this energy range is 11%. Because of the occurrence of these events, the constraints on the iDM parameter space are slightly less stringent than those from our previous analysis, which used an energy window of 10–100 keV.
Additional Information
© 2011 American Physical Society. Received 27 December 2010; revised 21 April 2011; published 1 June 2011. 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. In addition, we gratefully acknowledge assistance from the staff of the Soudan Underground Laboratory and the Minnesota Department of Natural Resources. 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 (Contract Nos. 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 - Ahmed2011p14113Phys_Rev_D.pdf
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Additional details
- Eprint ID
- 24054
- Resolver ID
- CaltechAUTHORS:20110620-091015212
- NSF
- 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
- Department of Energy (DOE)
- 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
- Swiss National Science Foundation (SNSF)
- 20-118119
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- SAPIN 341314-07
- Created
-
2011-06-20Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field