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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
Physical review letters, 2011-Sep-30, Letnik: 107, Številka: 14Journal 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.
