Cosmic ray-dark matter scattering: a new signature of (asymmetric) dark matter in the gamma ray sky

  title={Cosmic ray-dark matter scattering: a new signature of (asymmetric) dark matter in the gamma ray sky},
  author={Stefano Profumo and Lorenzo Ubaldi},
  journal={Journal of Cosmology and Astroparticle Physics},
  • S. Profumo, L. Ubaldi
  • Published 22 June 2011
  • Physics
  • Journal of Cosmology and Astroparticle Physics
We consider the process of scattering of Galactic cosmic-ray electrons and protons off of dark matter with the radiation of a final-state photon. This process provides a novel way to search for Galactic dark matter with gamma rays. We argue that for a generic weakly interacting massive particle, barring effects such as co-annihilation or a velocity-dependent cross section, the gamma-ray emission from cosmic-ray scattering off of dark matter is typically smaller than that from dark matter pair… 

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