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arxiv: 1804.10697 · v7 · pith:TDILXE56new · submitted 2018-04-27 · ✦ hep-ex · astro-ph.CO· physics.ins-det

First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector

SuperCDMS Collaboration , R. Agnese , T. Aralis , T. Aramaki , I.J. Arnquist , E. Azadbakht , W. Baker , S. Banik
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D. Barker D.A. Bauer T. Binder M.A. Bowles P.L. Brink R. Bunker B. Cabrera R. Calkins C. Cartaro D.G. Cerdeno Y.-Y. Chang J. Cooley B. Cornell P. Cushman P.C.F. Di Stefano T. Doughty E. Fascione E. Figueroa-Feliciano C. Fink M. Fritts G. Gerbier R. Germond M. Ghaith S.R. Golwala H.R. Harris Z. Hong E.W. Hoppe L. Hsu M.E. Huber V. Iyer D. Jardin C. Jena M.H. Kelsey A. Kennedy A. Kubik N.A. Kurinsky R.E. Lawrence J.V. Leyva B. Loer E. Lopez Asamar P. Lukens D. MacDonell R. Mahapatra V. Mandic N. Mast E.H. Miller N. Mirabolfathi B. Mohanty J.D. Morales Mendoza J. Nelson J.L. Orrell S.M. Oser W.A. Page R. Partridge M. Pepin A. Phipps F. Ponce S. Poudel M. Pyle H. Qiu W. Rau A. Reisetter T. Reynolds A. Roberts A.E. Robinson H.E. Rogers R.K. Romani T. Saab B. Sadoulet J. Sander A. Scarff R.W. Schnee S. Scorza K. Senapati B. Serfass J. So D. Speller C. Stanford M. Stein J. Street H.A. Tanaka D. Toback R. Underwood A.N. Villano B. von Krosigk S.L. Watkins J.S. Wilson M.J. Wilson J. Winchell D.H. Wright S. Yellin B.A. Young X. Zhang X. Zhao
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classification ✦ hep-ex astro-ph.COphysics.ins-det
keywords darkmattercdmsconstraintsdemonstratedetectorfirstgram
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We present the first limits on inelastic electron-scattering dark matter and dark photon absorption using a prototype SuperCDMS detector having a charge resolution of 0.1 electron-hole pairs (CDMS HVeV, a 0.93 gram CDMS HV device). These electron-recoil limits significantly improve experimental constraints on dark matter particles with masses as low as 1 MeV/$\mathrm{c^2}$. We demonstrate a sensitivity to dark photons competitive with other leading approaches but using substantially less exposure (0.49 gram days). These results demonstrate the scientific potential of phonon-mediated semiconductor detectors that are sensitive to single electronic excitations.

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