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Dark-Matter-Electron Detectors for Dark-Matter-Nucleon Interactions.

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New detector concepts for dark matter-electron interactions can also probe dark matter-nucleon interactions. This research sets new limits on MeV-scale dark matter and enhances future low-threshold experiments.

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Area of Science:

  • Particle Physics
  • Astrophysics
  • Cosmology

Background:

  • A decade-old paper showed dark matter detectors could probe nucleon and electron interactions.
  • New detector concepts focus on dark matter-electron interactions at low masses.

Purpose of the Study:

  • To demonstrate that dark matter-electron detector concepts can probe new parameter space for dark matter-nucleon interactions.
  • To establish new limits on MeV-scale dark matter interactions with nuclei.
  • To highlight how advances in detector technology benefit both electron and nuclear interaction studies.

Main Methods:

  • Utilizing existing data from superconducting detectors.
  • Applying novel detector concepts designed for low-mass dark matter-electron interactions.
  • Extrapolating anticipated advances in detector technology.

Main Results:

  • New limits are placed on the interactions of nuclei with MeV-scale dark matter.
  • Detector concepts for electron interactions are shown to be effective for nuclear interactions.
  • Sensitivity is significantly extended into uncharted territory for nuclear interactions.

Conclusions:

  • New detector concepts offer a dual benefit, probing both dark matter-electron and dark matter-nucleon interactions.
  • This approach effectively doubles the science output of future low-threshold experiments.
  • The study opens new avenues for exploring MeV-scale dark matter with existing and future technologies.