Search for an annual modulation in a p-type Point Contact germanium dark matter detector.

Journal Article (Journal Article)

Fifteen months of cumulative CoGeNT data are examined for indications of an annual modulation, a predicted signature of weakly interacting massive particle (WIMP) interactions. Presently available data support the presence of a modulated component of unknown origin, with parameters prima facie compatible with a galactic halo composed of light-mass WIMPs. Unoptimized estimators yield a statistical significance for a modulation of ∼2.8σ, limited by the short exposure.

Full Text

Duke Authors

Cited Authors

  • Aalseth, CE; Barbeau, PS; Colaresi, J; Collar, JI; Diaz Leon, J; Fast, JE; Fields, N; Hossbach, TW; Keillor, ME; Kephart, JD; Knecht, A; Marino, MG; Miley, HS; Miller, ML; Orrell, JL; Radford, DC; Wilkerson, JF; Yocum, KM; CoGeNT Collaboration,

Published Date

  • September 2011

Published In

Volume / Issue

  • 107 / 14

Start / End Page

  • 141301 -

PubMed ID

  • 22107183

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.107.141301


  • eng