Search for an Annual Modulation in a P-type Point Contact Germanium Dark Matter Detector
C.E. Aalseth, P.S. Barbeau, J. Colaresi, J.I. Collar, J. Diaz Leon,, J.E. Fast, N. Fields, T.W. Hossbach, M.E. Keillor, J.D. Kephart, A. Knecht,, M.G. Marino, H.S. Miley, M.L. Miller, J.L. Orrell, D.C. Radford, J.F., Wilkerson, K.M. Yocum
TL;DR
This study analyzes 15 months of CoGeNT data to detect annual modulation signals potentially indicating light-mass WIMP interactions, finding a modest statistical hint of such a modulation.
Contribution
It provides the first long-term analysis of CoGeNT data for annual modulation, suggesting possible dark matter signals with a statistical significance of about 2.8 sigma.
Findings
Evidence of a modulated component compatible with light WIMPs
Statistical significance of ~2.8 sigma for modulation
Supports the dark matter hypothesis with galactic halo models
Abstract
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.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.