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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

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