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Search for low-mass weakly interacting massive particles using voltage-assisted calorimetric ionization detection in the SuperCDMS experiment

  • R. Agnese
  • , A. J. Anderson
  • , M. Asai
  • , D. Balakishiyeva
  • , R. Basu Thakur
  • , D. A. Bauer
  • , J. Billard
  • , A. Borgland
  • , M. A. Bowles
  • , D. Brandt
  • , P. L. Brink
  • , R. Bunker
  • , B. Cabrera
  • , D. O. Caldwell
  • , D. G. Cerdeno
  • , H. Chagani
  • , J. Cooley
  • , B. Cornell
  • , C. H. Crewdson
  • , P. Cushman
  • M. Daal, P. C.F. Di Stefano, T. Doughty, L. Esteban, S. Fallows, E. Figueroa-Feliciano, G. L. Godfrey, S. R. Golwala, J. Hall, H. R. Harris, S. A. Hertel, T. Hofer, D. Holmgren, L. Hsu, M. E. Huber, A. Jastram, O. Kamaev, B. Kara, M. H. Kelsey, A. Kennedy, M. Kiveni, K. Koch, B. Loer, E. Lopez Asamar, R. Mahapatra, V. Mandic, C. Martinez, K. A. McCarthy, N. Mirabolfathi, R. A. Moffatt

Research output: Contribution to journalArticlepeer-review

Abstract

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 170 eVee (electron equivalent) was obtained, which allows us to constrain new WIMP-nucleon spin-independent parameter space for WIMP masses below 6 GeV/c2.

Original languageEnglish (US)
Article number041302
JournalPhysical review letters
Volume112
Issue number4
DOIs
StatePublished - Jan 27 2014

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