Article
First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector
Physics
Document Type
Article
Publication Date
8-3-2018
Publisher
American Physical Society
Disciplines
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 gram CDMS HV 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 gram days). These results demonstrate the scientific potential of phonon-mediated semiconductor detectors that are sensitive to single electronic excitations.
Citation Information
Agnese, R., Aralis, T., Aramaki, T., Arnquist, I. J., Azadbakht, E., Baker, W., Banik, S., Barker, D., Bauer, D. A., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cartaro, C., Cerdeño, D. G., Chang, Y.-Y., Cooley, J., … Zhao, X. (2018). First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector. Physical Review Letters, 121(5), 051301. https://doi.org/10.1103/PhysRevLett.121.051301
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