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Search for an Annual Modulation in a P-type Point Contact Germanium Dark Matter Detector

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 نشر من قبل Juan I. Collar
 تاريخ النشر 2011
  مجال البحث فيزياء
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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 ~2.8 sigma, limited by the short exposure.



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