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First Dark Matter Constraints from SuperCDMS Single-Charge Sensitive Detectors

Agnese, R. and Aralis, T. and Chang, Y.-Y. and Cornell, B. and Golwala, S. R. (2018) First Dark Matter Constraints from SuperCDMS Single-Charge Sensitive Detectors. Physical Review Letters, 121 (5). Art. No. 051301. ISSN 0031-9007. doi:10.1103/PhysRevLett.121.051301.

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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 g CDMS high-voltage device). These electron-recoil limits significantly improve experimental constraints on dark matter particles with masses as low as 1  MeV/c^2. We demonstrate a sensitivity to dark photons competitive with other leading approaches but using substantially less exposure (0.49 g d). These results demonstrate the scientific potential of phonon-mediated semiconductor detectors that are sensitive to single electronic excitations.

Item Type:Article
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URLURL TypeDescription Paper
Chang, Y.-Y.0000-0002-6441-980X
Golwala, S. R.0000-0002-1098-7174
Additional Information:© 2018, The author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. Received 1 May 2018; revised manuscript received 20 June 2018; published 3 August 2018. We thank Rouven Essig and Tien-Tien Yu for fruitful conversations and for help with understanding and using QEDark, as well as Yonit Hochberg for help understanding dark photon calculations. We also thank Gordan Krnjaic and Kathryn Zurek for fruitful theoretical discussions. Funding and support were received from the National Science Foundation, the U.S. Department of Energy, NSERC Canada, the Canada First Research Excellence Fund, MultiDark, and Michael M. Garland. This document was prepared by the SuperCDMS Collaboration using the resources of the Fermi National Accelerator Laboratory (Fermilab), a U.S. Department of Energy, Office of Science, HEP User Facility. Fermilab is managed by Fermi Research Alliance, LLC (FRA), acting under Contract No. DE-AC02-07CH11359. Pacific Northwest National Laboratory is operated by Battelle Memorial Institute under Contract No. DE-AC05-76RL01830 for the U.S. Department of Energy. SLAC is operated under Contract No. DE-AC02-76SF00515 with the U.S. Department of Energy.
Group:Astronomy Department
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC02-07CH11359
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Canada First Research Excellence FundUNSPECIFIED
Michael M. GarlandUNSPECIFIED
Department of Energy (DOE)DE-AC05-76RL01830
Department of Energy (DOE)DE-AC02-76SF00515
Issue or Number:5
Record Number:CaltechAUTHORS:20180618-094624240
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87185
Deposited By: Tony Diaz
Deposited On:18 Jun 2018 21:00
Last Modified:15 Nov 2021 20:45

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