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Title: A low-threshold analysis of CDMS shallow-site data

Abstract

Data taken during the final shallow-site run of the first tower of the Cryogenic Dark Matter Search (CDMS II) detectors have been reanalyzed with improved sensitivity to small energy depositions. Four {approx}224 g germanium and two {approx}105 g silicon detectors were operated at the Stanford Underground Facility (SUF) between December 2001 and June 2002, yielding 118 live days of raw exposure. Three of the germanium and both silicon detectors were analyzed with a new low-threshold technique, making it possible to lower the germanium and silicon analysis thresholds down to the actual trigger thresholds of {approx}1 keV and {approx}2 keV, respectively. Limits on the spin-independent cross section for weakly interacting massive particles (WIMPs) to elastically scatter from nuclei based on these data exclude interesting parameter space for WIMPs with masses below 9 GeV/c{sup 2}. Under standard halo assumptions, these data partially exclude parameter space favored by interpretations of the DAMA/LIBRA and CoGeNT experiments data as WIMP signals, and exclude new parameter space for WIMP masses between 3 GeV/c{sup 2} and 4 GeV/c{sup 2}.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
993558
Report Number(s):
FERMILAB-PUB-10-455-AE
arXiv eprint number arXiv:1010.4290; TRN: US1008103
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Phys.Rev.D82:122004,2010
Additional Journal Information:
Journal Name: Phys.Rev.D82:122004,2010
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS, 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; CRYOGENICS; GERMANIUM; NONLUMINOUS MATTER; NUCLEI; SENSITIVITY; SILICON; Astrophysics, Experiment-HEP

Citation Formats

Akerib, D S, /Case Western Reserve U., Attisha, M J, /Brown U., Baudis, L, /Zurich-Irchel U., Bauer, D A, /Fermilab, Bolozdynya, A I, /Case Western Reserve U., Brink, P L, /SLAC, Bunker, R, /UC, Santa Barbara, Cabrera, B, /Stanford U., Phys. Dept., Caldwell, D O, /UC, Santa Barbara, Chang, C L, /Stanford U., Phys. Dept., Clarke, R M, and /Stanford U., Phys. Dept. /Southern Methodist U.. A low-threshold analysis of CDMS shallow-site data. United States: N. p., 2010. Web. doi:10.1103/PhysRevD.82.122004.
Akerib, D S, /Case Western Reserve U., Attisha, M J, /Brown U., Baudis, L, /Zurich-Irchel U., Bauer, D A, /Fermilab, Bolozdynya, A I, /Case Western Reserve U., Brink, P L, /SLAC, Bunker, R, /UC, Santa Barbara, Cabrera, B, /Stanford U., Phys. Dept., Caldwell, D O, /UC, Santa Barbara, Chang, C L, /Stanford U., Phys. Dept., Clarke, R M, & /Stanford U., Phys. Dept. /Southern Methodist U.. A low-threshold analysis of CDMS shallow-site data. United States. https://doi.org/10.1103/PhysRevD.82.122004
Akerib, D S, /Case Western Reserve U., Attisha, M J, /Brown U., Baudis, L, /Zurich-Irchel U., Bauer, D A, /Fermilab, Bolozdynya, A I, /Case Western Reserve U., Brink, P L, /SLAC, Bunker, R, /UC, Santa Barbara, Cabrera, B, /Stanford U., Phys. Dept., Caldwell, D O, /UC, Santa Barbara, Chang, C L, /Stanford U., Phys. Dept., Clarke, R M, and /Stanford U., Phys. Dept. /Southern Methodist U.. 2010. "A low-threshold analysis of CDMS shallow-site data". United States. https://doi.org/10.1103/PhysRevD.82.122004. https://www.osti.gov/servlets/purl/993558.
@article{osti_993558,
title = {A low-threshold analysis of CDMS shallow-site data},
author = {Akerib, D S and /Case Western Reserve U. and Attisha, M J and /Brown U. and Baudis, L and /Zurich-Irchel U. and Bauer, D A and /Fermilab and Bolozdynya, A I and /Case Western Reserve U. and Brink, P L and /SLAC and Bunker, R and /UC, Santa Barbara and Cabrera, B and /Stanford U., Phys. Dept. and Caldwell, D O and /UC, Santa Barbara and Chang, C L and /Stanford U., Phys. Dept. and Clarke, R M and /Stanford U., Phys. Dept. /Southern Methodist U.},
abstractNote = {Data taken during the final shallow-site run of the first tower of the Cryogenic Dark Matter Search (CDMS II) detectors have been reanalyzed with improved sensitivity to small energy depositions. Four {approx}224 g germanium and two {approx}105 g silicon detectors were operated at the Stanford Underground Facility (SUF) between December 2001 and June 2002, yielding 118 live days of raw exposure. Three of the germanium and both silicon detectors were analyzed with a new low-threshold technique, making it possible to lower the germanium and silicon analysis thresholds down to the actual trigger thresholds of {approx}1 keV and {approx}2 keV, respectively. Limits on the spin-independent cross section for weakly interacting massive particles (WIMPs) to elastically scatter from nuclei based on these data exclude interesting parameter space for WIMPs with masses below 9 GeV/c{sup 2}. Under standard halo assumptions, these data partially exclude parameter space favored by interpretations of the DAMA/LIBRA and CoGeNT experiments data as WIMP signals, and exclude new parameter space for WIMP masses between 3 GeV/c{sup 2} and 4 GeV/c{sup 2}.},
doi = {10.1103/PhysRevD.82.122004},
url = {https://www.osti.gov/biblio/993558}, journal = {Phys.Rev.D82:122004,2010},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {10}
}