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Search for Annual Modulation in Low-Energy CDMS-II Data.


DE141134561

Publication Date 2014
Personal Author Ahmed, Z.; Akerib, D. S.; Anderson, A. J.; Arrenberg, S.; Bailey, C. N.; Baudis, L.; Bauer, D. A.; Bunker, R.; Brink, P. L.; Bruch, T.
Page Count 13
Abstract The authors report limits on annual modulation of the low-energy event rate from the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory. Such a modulation could be produced by interactions from Weakly Interacting Massive Particles (WIMPs) with masses approximately 10 GeV/c(sub 2). They find no evidence for annual modulation in the event rate of veto-anticoincident single-detector interactions consistent with nuclear recoils, and constrain the magnitude of any modulation to <0.06 event (keVnr kg day)(sub -1) in the 5 11.9 keVnr energy range at the 99% condence level. These results disfavor an explanation for the reported modulation in the 1.2-3.2 keV(sup ee) energy range in CoGeNT in terms of nuclear recoils resulting from elastic scattering of WIMPs at >98% condence. For events consistent with electron recoils, no signicant modulation is observed for either single- or multiple-detector interactions in the 3.0-7.4 keV(sup ee) range.
Keywords
  • Cryogenics
  • Dark matter
  • Detectors
  • Elastic scattering
  • Electrons
  • Energy range
  • Interactions
  • Modulation
  • Weakly Interacting Massive Particle(WIMP)
Source Agency
  • Technical Information Center Oak Ridge Tennessee
NTIS Subject Category
  • 46 - Physics
  • 54C - Astrophysics
Corporate Authors Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.
Supplemental Notes Sponsored by Department of Energy, Washington, DC.
Document Type Technical Report
NTIS Issue Number 201425
Contract Number
  • DE-AC02-76SF00515
Search for Annual Modulation in Low-Energy CDMS-II Data.
Search for Annual Modulation in Low-Energy CDMS-II Data.
DE141134561

  • Cryogenics
  • Dark matter
  • Detectors
  • Elastic scattering
  • Electrons
  • Energy range
  • Interactions
  • Modulation
  • Weakly Interacting Massive Particle(WIMP)
  • Technical Information Center Oak Ridge Tennessee
  • 46 - Physics
  • 54C - Astrophysics
  • DE-AC02-76SF00515
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