Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector
Cosmology and Nongalactic Astrophysics
2011-04-05 v2 High Energy Physics - Experiment
Instrumentation and Detectors
Abstract
We report on several features present in the energy spectrum from an ultra low-noise germanium detector operated at 2,100 m.w.e. By implementing a new technique able to reject surface events, a number of cosmogenic peaks can be observed for the first time. We discuss several possible causes for an irreducible excess of bulk-like events below 3 keVee, including a dark matter candidate common to the DAMA/LIBRA annual modulation effect, the hint of a signal in CDMS, and phenomenological predictions. Improved constraints are placed on a cosmological origin for the DAMA/LIBRA effect.
Keywords
Cite
@article{arxiv.1002.4703,
title = {Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector},
author = {C. E. Aalseth and P. S. Barbeau and N. S. Bowden and B. Cabrera-Palmer and J. Colaresi and J. I. Collar and S. Dazeley and P. de Lurgio and G. Drake and J. E. Fast and N. Fields and C. H. Greenberg and T. W. Hossbach and M. E. Keillor and J. D. Kephart and M. G. Marino and H. S. Miley and M. L. Miller and J. L. Orrell and D. C. Radford and D. Reyna and R. G. H. Robertson and R. L. Talaga and O. Tench and T. D. Van Wechel and J. F. Wilkerson and K. M. Yocum},
journal= {arXiv preprint arXiv:1002.4703},
year = {2011}
}
Comments
4 pages, 4 figures. v2: submitted version. Minimal changes in wording, one reference added