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

  • Author(s): Agnese, R
  • Anderson, AJ
  • Asai, M
  • Balakishiyeva, D
  • Basu Thakur, R
  • Bauer, DA
  • Billard, J
  • Borgland, A
  • Bowles, MA
  • Brandt, D
  • Brink, PL
  • Bunker, R
  • Cabrera, B
  • Caldwell, DO
  • Cerdeno, DG
  • Chagani, H
  • Cooley, J
  • Cornell, B
  • Crewdson, CH
  • Cushman, P
  • Daal, M
  • Di Stefano, PCF
  • Doughty, T
  • Esteban, L
  • Fallows, S
  • Figueroa-Feliciano, E
  • Godfrey, GL
  • Golwala, SR
  • Hall, J
  • Harris, HR
  • Hertel, SA
  • Hofer, T
  • Holmgren, D
  • Hsu, L
  • Huber, ME
  • Jastram, A
  • Kamaev, O
  • Kara, B
  • Kelsey, MH
  • Kennedy, A
  • Kiveni, M
  • Koch, K
  • Loer, B
  • Lopez Asamar, E
  • Mahapatra, R
  • Mandic, V
  • Martinez, C
  • McCarthy, KA
  • Mirabolfathi, N
  • Moffatt, RA
  • Moore, DC
  • Nadeau, P
  • Nelson, RH
  • Page, K
  • Partridge, R
  • Pepin, M
  • Phipps, A
  • Prasad, K
  • Pyle, M
  • Qiu, H
  • Rau, W
  • Redl, P
  • Reisetter, A
  • Ricci, Y
  • Saab, T
  • Sadoulet, B
  • Sander, J
  • Schneck, K
  • Schnee, RW
  • Scorza, S
  • Serfass, B
  • Shank, B
  • Speller, D
  • Villano, AN
  • Welliver, B
  • Wright, DH
  • Yellin, S
  • Yen, JJ
  • Young, BA
  • Zhang, J
  • et al.
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. © 2014 American Physical Society.

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