CaltechAUTHORS
Published June 1, 2011 | Version Published
Journal Article Open

Search for inelastic dark matter with the CDMS II experiment

Creators

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

Files

Ahmed2011p14113Phys_Rev_D.pdf

Files (2.9 MB)

Name Size
md5:851afa10c32c5540ea6e96608ed96311
2.9 MB Preview Download

Additional details

Identifiers

Eprint ID
24054
Resolver ID
CaltechAUTHORS:20110620-091015212

Funding

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

Dates

Created
2011-06-20
Created from EPrint's datestamp field
Updated
2021-11-09
Created from EPrint's last_modified field