期刊
PHYSICAL REVIEW LETTERS
卷 116, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.116.071301
关键词
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资金
- NSF
- National Science Foundation
- Department of Energy
- Fermilab URA Visiting Scholar Award [13-S-04]
- NSERC Canada
- MultiDark (Spanish MINECO)
- Fermi Research Alliance, LLC [De-AC02-07CH11359]
- United States Department of Energy [DEAC02-76SF00515]
- STFC [ST/G000905/1] Funding Source: UKRI
- Direct For Mathematical & Physical Scien [1408597] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1408646] Funding Source: National Science Foundation
- Division Of Physics [1408597] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1550658, 1408414, 1506033, 1151869] Funding Source: National Science Foundation
The CDMS low ionization threshold experiment (CDMSlite) uses cryogenic germanium detectors operated at a relatively high bias voltage to amplify the phonon signal in the search for weakly interacting massive particles (WIMPs). Results are presented from the second CDMSlite run with an exposure of 70 kg day, which reached an energy threshold for electron recoils as low as 56 eV. A fiducialization cut reduces backgrounds below those previously reported by CDMSlite. New parameter space for the WIMP-nucleon spin-independent cross section is excluded for WIMP masses between 1.6 and 5.5 GeV/c(2).
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