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

R. Agnese (Department of Physics, University of Florida, Gainesville, Florida 32611, USA) ; T. Aralis (Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, California 91125, USA) ; T. Aramaki (SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, California 94025, USA) ; I. J. Arnquist (Pacific Northwest National Laboratory, Richland, Washington 99352, USA) ; E. Azadbakht (Department of Physics and Astronomy, and the Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA) ; et al. - Show all 101 authors

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/c2. 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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  "titles": [
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      "source": "APS", 
      "title": "First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector"
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  "abstracts": [
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      "source": "APS", 
      "value": "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 <math><mrow><mn>1</mn><mtext> </mtext><mtext> </mtext><mi>MeV</mi><mo>/</mo><msup><mrow><mi>c</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math>. 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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Published on:
03 August 2018
Publisher:
APS
Published in:
Physical Review Letters , Volume 121 (2018)
Issue 5
DOI:
https://doi.org/10.1103/PhysRevLett.121.051301
arXiv:
1804.10697
Copyrights:
Published by the American Physical Society
Licence:
CC-BY-4.0

Fulltext files: