Decaying dark matter can explain the e? excesses

  title={Decaying dark matter can explain the e? excesses},
  author={Enrico Nardi and Francesco Sannino and Alessandro Strumia},
  journal={Journal of Cosmology and Astroparticle Physics},
PAMELA and ATIC recently reported excesses in e± cosmic rays. Since the interpretation in terms of DM annihilations was found to be not easily compatible with constraints from photon observations, we consider the DM decay hypothesis and find that it can explain the e± excesses compatibly with all constraints, and can be tested by dedicated HESS observations of the Galactic Ridge. ATIC data indicate a DM mass of about 2 TeV: this mass naturally implies the observed DM abundance relative to… 

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