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Detecting light particle dark matter (DM) is challenging. This study uses cosmic ray collisions to constrain DM-nucleon scattering, limiting cross sections for spin-independent and spin-dependent interactions.

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Area of Science:

  • Particle physics
  • Cosmology
  • Astrophysics

Background:

  • Direct detection experiments face limitations for low-mass dark matter (DM).
  • Existing methods struggle with GeV-scale or lighter dark matter particles.
  • A gap exists in understanding dark matter interactions in this mass range.

Purpose of the Study:

  • To derive novel constraints on light dark matter interactions.
  • To explore an indirect detection method for dark matter.
  • To limit the dark matter-nucleon scattering cross section.

Main Methods:

  • Modeling dark matter production via cosmic ray collisions.
  • Analyzing the energetic component of dark matter generated indirectly.
  • Utilizing nuclear recoil data from dark matter and neutrino detectors.

Main Results:

  • Established new constraints on the dark matter-nucleon scattering cross section.
  • Limited the cross section to below 10^-31 cm^2 for light dark matter.
  • Demonstrated sensitivity for both spin-independent and spin-dependent scattering.

Conclusions:

  • Indirect constraints provide a viable method for probing light dark matter.
  • This approach complements direct detection experiments.
  • Further research can refine these constraints for dark matter searches.