CDMSlite: A Search for Low-Mass WIMPs 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

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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 D.C. Moore P. Nadeau R.H. Nelson K. Page R. Partridge M. Pepin A. Phipps K. Prasad M. Pyle H. Qiu W. Rau P. Redl A. Reisetter Y. Ricci T. Saab B. Sadoulet J. Sander K. Schneck R.W. Schnee S. Scorza B. Serfass B. Shank D. Speller A.N. Villano B. Welliver D.H. Wright S. Yellin J.J. Yen B.A. Young J. Zhang

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classification ⚛️ physics.ins-det astro-ph.COastro-ph.IMhep-ex

keywords calorimetriccdmsliteenergyexperimentionizationsupercdmswimpsallows

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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 paper, 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 10 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.

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CDMSlite: A Search for Low-Mass WIMPs using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment

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