COSINE-100 reports no excess events in 172.9 kg-year exposure and derives 90% CL upper limits excluding DM-electron scattering cross sections above 6.4e-33 cm2 (0.25 GeV DM, light mediator) and 3.4e-37 cm2 (0.4 GeV DM, heavy mediator).
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Constraints on sub-GeV dark matter scattering on electrons with COSINE-100
COSINE-100 reports no excess events in 172.9 kg-year exposure and derives 90% CL upper limits excluding DM-electron scattering cross sections above 6.4e-33 cm2 (0.25 GeV DM, light mediator) and 3.4e-37 cm2 (0.4 GeV DM, heavy mediator).