Results from the Final Exposure of the CDMS II Experiment
Abstract
We report results from a blind analysis of the final data taken with the Cryogenic Dark Matter Search experiment (CDMS II) at the Soudan Underground Laboratory, Minnesota, USA. A total raw exposure of 612 kg-days was analyzed for this work. We observed two events in the signal region; based on our background estimate, the probability of observing two or more background events is 23%. These data set an upper limit on the Weakly Interacting Massive Particle (WIMP)-nucleon elastic-scattering spin-independent cross-section of 7.0x10^{-44} cm^2 for a WIMP of mass 70 GeV/c^2 at the 90% confidence level. Combining this result with all previous CDMS II data gives an upper limit on the WIMP-nucleon spin-independent cross-section of 3.8x10^{-44} cm^2 for a WIMP of mass 70 GeV/c^2. We also exclude new parameter space in recently proposed inelastic dark matter models.
Keywords
Cite
@article{arxiv.0912.3592,
title = {Results from the Final Exposure of the CDMS II Experiment},
author = {The CDMS Collaboration and Z. Ahmed},
journal= {arXiv preprint arXiv:0912.3592},
year = {2014}
}
Comments
6 pages, 5 figures