Results from a Low-Energy Analysis of the CDMS II Germanium Data

Journal Article · Fri Apr 01 04:00:00 UTC 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.131302· OSTI ID:21550250

Ahmed, Z; Filippini, J; Golwala, S R; Moore, D ^[1]; Akerib, D S; Bailey, C N; Dragowsky, M R; Hennings-Yeomans, R ^[2]; Arrenberg, S; Baudis, L; Bruch, T; Tarka, M ^[3]; Balakishiyeva, D; Saab, T ^[4]; Bauer, D A; DeJongh, F; Hall, J; Holmgren, D; Hsu, L; Ramberg, E ^[5]

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1. Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, California 91125 (United States)
2. Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106 (United States)
3. Physics Institute, University of Zuerich, Winterthurerstrasse 190, CH-8057 (Switzerland)
4. Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)
5. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)

We report results from a reanalysis of data from the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory. Data taken between October 2006 and September 2008 using eight germanium detectors are reanalyzed with a lowered, 2 keV recoil-energy threshold, to give increased sensitivity to interactions from weakly interacting massive particles (WIMPs) with masses below {approx}10 GeV/c{sup 2}. This analysis provides stronger constraints than previous CDMS II results for WIMP masses below 9 GeV/c{sup 2} and excludes parameter space associated with possible low-mass WIMP signals from the DAMA/LIBRA and CoGeNT experiments.

• OSTI ID: 21550250
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 13 Vol. 106; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ELEMENTS
ENERGY ANALYSIS
ENERGY RANGE
GE SEMICONDUCTOR DETECTORS
GERMANIUM
GEV RANGE
GEV RANGE 01-10
INTERACTIONS
KEV RANGE
KEV RANGE 01-10
MASS
MATTER
MEASURING INSTRUMENTS
METALS
NONLUMINOUS MATTER
RADIATION DETECTORS
RECOILS
SEMICONDUCTOR DETECTORS
SENSITIVITY