September 19, 2023
Journal Article

Search for Low-mass Dark Matter via Bremsstrahlung Radiation and the Migdal Effect in SuperCDMS

Abstract

In this paper, we present a re-analysis of SuperCDMS data using a prole likelihood approach to search for sub-GeV dark matter particles (DM) through two inelastic scattering channels: bremsstrahlung radiation and the Migdal effect. By considering possible inelastic scattering channels, experimental sensitivity can be extended to DM masses that would otherwise be 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 excludes DM masses down to 30 MeV=c2 at 5:0 10-30 cm2.

Published: September 19, 2023

Citation

Albakry M.F., I. Alkhatib, D. Alonso, D.W. Amaral, T. Aralis, T. Aramaki, and I.J. Arnquist, et al. 2023. Search for Low-mass Dark Matter via Bremsstrahlung Radiation and the Migdal Effect in SuperCDMS. Physical Review D 107, no. 11:112013. PNNL-SA-172121. doi:10.1103/PhysRevD.107.112013

Research topics