Constraints on Lightly Ionizing Particles from CDMSlite

(SuperCDMS Collaboration)

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) achieved efficient detection of very small recoil energies in its germanium target, resulting in sensitivity to lightly ionizing particles (LIPs) in a previously unexplored region of charge, mass, and velocity parameter space. We report first direct-detection limits calculated using the optimum interval method on the vertical intensity of cosmogenically produced LIPs with an electric charge smaller than e/(3×10^{5}), as well as the strongest limits for charge ≤e/160, with a minimum vertical intensity of 1.36×10^{-7}  cm^{-2} s^{-1} sr^{-1} at charge e/160. These results apply over a wide range of LIP masses (5  MeV/c^{2} to 100  TeV/c^{2}) and cover a wide range of βγ values (0.1-10^{6}), thus excluding nonrelativistic LIPs with βγ as small as 0.1 for the first time.

Original languageEnglish (US)
Article number081802
JournalPhysical review letters
Volume127
Issue number8
DOIs
StatePublished - Aug 20 2021

Bibliographical note

Publisher Copyright:
© 2021 authors. Published by the American Physical Society.

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