Search for Cosmic-ray Boosted Sub-MeV Dark-Matter-Electron Scattering in PandaX-4T

Abstract

We report the first search for the elastic scatterings between cosmic-ray boosted sub-MeV dark matter and electrons in the PandaX-4T liquid xenon experiment. Sub-MeV dark matter particles can be accelerated by scattering with electrons in the cosmic rays and produce detectable electron recoil signals in the detector. Using the commissioning data from PandaX-4T of 0.63~tonne$\cdot$year exposure, we set new constraints on DM-electron scattering cross sections for DM masses ranging from 10~eV/$c^2$ to 3~keV/$c^2$.

6 pages, 3 figures

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Cited by in corpus (3)

• Search for Solar Boosted Dark Matter Particles at the PandaX-4T Experiment
• Cosmic-ray-electron boosted light dark matter: Implications of LZ 2025 data
• Blazar-Boosted Dark Matter: Novel Signatures via Elastic and Inelastic Scattering