SuperCDMS is an experiment designed to directly detect weakly interacting massive particles (WIMPs), a favored candidate for dark matter ubiquitous in the Universe. In this Letter, we present WIMP-search results using a calorimetric technique we call CDMSlite, which relies on voltage-assisted Luke-Neganov amplification of the ionization energy deposited by particle interactions. The data were collected with a single 0.6 kg germanium detector running for ten live days at the Soudan Underground Laboratory. A low energy threshold of (electron equivalent) was obtained, which allows us to constrain new WIMP-nucleon spin-independent parameter space for WIMP masses below 6 GeV/c^2.
Revised: July 27, 2015 |
Published: January 27, 2014
Citation
Agnese R., A.J. Anderson, M. Asai, D. Balakishiyeva, R. Basu Thakur, D.A. Bauer, and J. Billard, et al. 2014.A Search for Low-Mass Weakly Interacting Massive Particles Using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment.Physical Review Letters 112, no. 4:Article No. 041302.PNNL-SA-98641.doi:10.1103/PhysRevLett.112.041302