Results from a Low-Energy Analysis of the CDMS II Germanium Data
Abstract
We report results from a reanalysis of data from the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory. Data taken between October 2006 and September 2008 using eight germanium detectors are reanalyzed with a lowered, 2 keV recoil-energy threshold, to give increased sensitivity to interactions from Weakly Interacting Massive Particles (WIMPs) with masses below ~10 GeV/c^2. This analysis provides stronger constraints than previous CDMS II results for WIMP masses below 9 GeV/c^2 and excludes parameter space associated with possible low-mass WIMP signals from the DAMA/LIBRA and CoGeNT experiments.
Cite
@article{arxiv.1011.2482,
title = {Results from a Low-Energy Analysis of the CDMS II Germanium Data},
author = {CDMS Collaboration and Z. Ahmed and D. S. Akerib and S. Arrenberg and C. N. Bailey and D. Balakishiyeva and L. Baudis and D. A. Bauer and P. L. Brink and T. Bruch and R. Bunker and B. Cabrera and D. O. Caldwell and J. Cooley and E. do Couto e Silva and P. Cushman and M. Daal and F. DeJongh and P. Di Stefano and M. R. Dragowsky and L. Duong and S. Fallows and E. Figueroa-Feliciano and J. Filippini and J. Fox and M. Fritts and S. R. Golwala and J. Hall and R. Hennings-Yeomans and S. A. Hertel and D. Holmgren and L. Hsu and M. E. Huber and O. Kamaev and M. Kiveni and M. Kos and S. W. Leman and S. Liu and R. Mahapatra and V. Mandic and K. A. McCarthy and N. Mirabolfathi and D. Moore and H. Nelson and R. W. Ogburn and A. Phipps and M. Pyle and X. Qiu and E. Ramberg and W. Rau and A. Reisetter and R. Resch and T. Saab and B. Sadoulet and J. Sander and R. W. Schnee and D. N. Seitz and B. Serfass and K. M. Sundqvist and M. Tarka and P. Wikus and S. Yellin and J. Yoo and B. A. Young and J. Zhang},
journal= {arXiv preprint arXiv:1011.2482},
year = {2011}
}
Comments
9 pages, 8 figures. Supplemental material included as ancillary files. v3) Added appendix with additional details regarding energy scale and backgrounds