A Caltech Library Service

Recent results from WIMP-search analysis of CDMS-II data

Ahmed, Z. (2011) Recent results from WIMP-search analysis of CDMS-II data. In: Physics beyond the standard models of particles, cosmology and astrophysics. World Scientific , Hackensack, NJ, pp. 530-536. ISBN 978-981-4340-85-4.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


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.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
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).
Funding AgencyGrant Number
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 Foundation (SNF)20-118119
Natural Sciences and Engineering Research Council of Canada (NSERC)SAPIN 341314-07
Subject Keywords:Dark Matter; WIMPs; CDMS
Record Number:CaltechAUTHORS:20121023-110421077
Persistent URL:
Official Citation:RECENT RESULTS FROM WIMP-SEARCH ANALYSIS OF CDMS-II DATA Z. AHMED Physics Beyond the Standard Models of Particles, Cosmology and Astrophysics. March, 530-536
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35031
Deposited By: Tony Diaz
Deposited On:14 Nov 2012 00:26
Last Modified:03 Oct 2019 04:24

Repository Staff Only: item control page