Published February 19, 2016
| Published
Journal Article
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New Results from the Search for Low-Mass Weakly Interacting Massive Particles with the CDMS Low Ionization Threshold Experiment
Abstract
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.
Additional Information
© 2016 American Physical Society. Received 10 September 2015; revised manuscript received 30 November 2015; published 17 February 2016. The SuperCDMS Collaboration gratefully acknowledges technical assistance from the staff of the Soudan Underground Laboratory and the Minnesota Department of Natural Resources. The iZIP detectors were fabricated in the Stanford Nanofabrication Facility, which is a member of the National Nanofabrication Infrastructure Network, sponsored and supported by the NSF. Part of the research described in this Letter was conducted under the Ultra Sensitive Nuclear Measurements Initiative at Pacific Northwest National Laboratory, which is operated by Battelle for the U.S. Department of Energy. Funding and support were received from the National Science Foundation, the Department of Energy, Fermilab URA Visiting Scholar Award No. 13-S-04, NSERC Canada, and MultiDark (Spanish MINECO). Fermilab is operated by the Fermi Research Alliance, LLC under Contract No. De-AC02-07CH11359. SLAC is operated under Contract No. DEAC02-76SF00515 with the United States Department of Energy.Attached Files
Published - PhysRevLett.116.071301.pdf
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PhysRevLett.116.071301.pdf
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Additional details
- Eprint ID
- 65391
- Resolver ID
- CaltechAUTHORS:20160316-114020422
- NSF
- 13-S-04
- Fermilab
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- MultiDark
- Ministerio de Economía, Industria y Competitividad (MINECO)
- DE-AC02-07CH11359
- Department of Energy (DOE)
- DEAC02-76SF00515
- Department of Energy (DOE)
- Created
-
2016-03-16Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field