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

Collaboration
Aug 3, 2023
6 pages
Published in:
  • Phys.Rev.Lett. 131 (2023) 19, 191002
  • Published: Nov 9, 2023
e-Print:
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Abstract: (APS)
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 30MeV/c2 to 2GeV/c2. 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.
Note:
  • 6 pages, 4 figures
  • dark matter: direct detection
  • dark matter: interaction
  • dark matter: scattering
  • WIMP: dark matter
  • WIMP nucleon: interaction
  • mixing: kinetic
  • dark matter: mass
  • time projection chamber: xenon
  • xenon: liquid
  • xenon: target
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