Document Detail


Results from a Search for Light-Mass Dark Matter with a p-Type Point Contact Germanium Detector.
MedLine Citation:
PMID:  21517370     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We report on several features in the energy spectrum from an ultralow-noise germanium detector operated deep underground. By implementing a new technique able to reject surface events, a number of cosmogenic peaks can be observed for the first time. We discuss an irreducible excess of bulklike events below 3 keV in ionization energy. These could be caused by unknown backgrounds, but also dark matter interactions consistent with DAMA/LIBRA. It is not yet possible to determine their origin. Improved constraints are placed on a cosmological origin for the DAMA/LIBRA effect.
Authors:
C E Aalseth; P S Barbeau; N S Bowden; B Cabrera-Palmer; J Colaresi; J I Collar; S Dazeley; P de Lurgio; J E Fast; N Fields; C H Greenberg; T W Hossbach; M E Keillor; J D Kephart; M G Marino; H S Miley; M L Miller; J L Orrell; D C Radford; D Reyna; O Tench; T D Van Wechel; J F Wilkerson; K M Yocum;
Publication Detail:
Type:  Journal Article     Date:  2011-03-29
Journal Detail:
Title:  Physical review letters     Volume:  106     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-04-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  131301     Citation Subset:  IM    
Affiliation:
Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
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