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DOI: 10.1103/PhysRevLett.131.191002

Search for Dark-Matter-Nucleon Interactions with a Dark Mediator in PandaX-4T

Di HuangAbdusalam AbdukerimZihao Bo ...+46 Wenliang Sun
Nov 2023
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摘要原文
We report results of a search for dark-matter-nucleon interactions via a dark mediator using optimized low-energy data from the PandaX-4T liquid xenon experiment. With the ionization-signal-only data and utilizing the Migdal effect, we set the most stringent limits on the cross section for dark matter masses ranging from 30~$\rm{MeV/c^2}$ to 2~$\rm{GeV/c^2}$. Under the assumption that the dark mediator is a dark photon that decays into scalar dark matter pairs in the early Universe, we rule out significant parameter space of such thermal relic dark-matter model.
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