Document Type
Article
Publication Date
6-30-2023
Publisher
American Physical Society
Abstract
We present a new analysis of previously published SuperCDMS data using a profile likelihood framework to search for sub-GeV dark matter (DM) particles through two inelastic scattering channels: bremsstrahlung radiation and the Migdal effect. By considering these possible inelastic scattering channels, experimental sensitivity can be extended to DM masses that are undetectable through the DM-nucleon elastic scattering channel, given the energy threshold of current experiments. We exclude DM masses down to 220 MeV/𝑐2 at 2.7×10−30 cm2 via the bremsstrahlung channel. The Migdal channel search provides overall considerably more stringent limits and excludes DM masses down to 30 MeV/𝑐2 at 5.0×10−30 cm2.
Recommended Citation
SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Alonso-González, D., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Ataee Langroudy, I., Azadbakht, E., Banik, S., Bathurst, C., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., … Zuniga, A. (2023). Search for low-mass dark matter via bremsstrahlung radiation and the Migdal effect in SuperCDMS. Physical Review D, 107(11), 112013. https://doi.org/10.1103/PhysRevD.107.112013
Comments
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.