1.
Phys Rev Lett
; 107(14): 141301, 2011 Sep 30.
Artigo
em Inglês
| MEDLINE
| ID: mdl-22107183
RESUMO
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 â¼2.8σ, limited by the short exposure.