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

Journal Article · Mon Nov 01 04:00:00 UTC 2010 · Submitted to Phys.Rev.Lett.

OSTI ID:1001393

Ahmed, Z; Akerib, D S; Arrenberg, S; Bailey, C N; Balakishiyeva, D; Baudis, L; Bauer, D A; Brink, P L; Bruch, T; Bunker, R; Cabrera, B

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.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1001393
• Report Number(s): FERMILAB-PUB-10-456-AE-CD-E; arXiv eprint number arXiv:1011.2482
• Journal Information: Submitted to Phys.Rev.Lett., Journal Name: Submitted to Phys.Rev.Lett.
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Astrophysics
Experiment-HEP
CRYOGENICS
GE SEMICONDUCTOR DETECTORS
GERMANIUM
NONLUMINOUS MATTER
SENSITIVITY