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. https://resolver.caltech.edu/CaltechAUTHORS:20180618-094624240
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PDF (describes the literature search performed to produce an uncertainty envelope for the photoelectric cross-section, compared to the nominal cross section referenced in the paper. This is a small effect and does not greatly impact the result, and is ...)
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Abstract
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.
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| 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 | ||||||||||||||||||||
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| Issue or Number: | 5 | ||||||||||||||||||||
| DOI: | 10.1103/PhysRevLett.121.051301 | ||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20180618-094624240 | ||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20180618-094624240 | ||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||
| ID Code: | 87185 | ||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||||||||
| Deposited On: | 18 Jun 2018 21:00 | ||||||||||||||||||||
| Last Modified: | 15 Nov 2021 20:45 |
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