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

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

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 compa...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physical review letters 2011-09, Vol.107 (14), p.141301-141301, Article 141301
Hauptverfasser: Aalseth, C E, Barbeau, P S, Colaresi, J, Collar, J I, Diaz Leon, J, Fast, J E, Fields, N, Hossbach, T W, Keillor, M E, Kephart, J D, Knecht, A, Marino, M G, Miley, H S, Miller, M L, Orrell, J L, Radford, D C, Wilkerson, J F, Yocum, K M
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.107.141301