2008

A Theory of Dark Matter

Arkani-Hamed, Nima, Finkbeiner, Douglas P., Slatyer, Tracy R. et al.

Understand

We propose a comprehensive theory of dark matter that explains the recent proliferation of unexpected observations in high-energy astrophysics.

  • Cosmic ray spectra from ATIC and PAMELA require a WIMP with mass M_chi ~ 500 - 800 GeV that annihilates into leptons at a level well above that expected from a thermal relic.
  • Signals from WMAP and EGRET reinforce this interpretation.
  • Taken together, we argue these facts imply the presence of a GeV-scale new force in the dark sector.

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