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...

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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
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container_end_page 141301
container_issue 14
container_start_page 141301
container_title Physical review letters
container_volume 107
creator 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
description 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.
doi_str_mv 10.1103/PhysRevLett.107.141301
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title Search for an annual modulation in a p-type Point Contact germanium dark matter detector
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