A theory of dark matter

@article{ArkaniHamed2009ATO,
  title={A theory of dark matter},
  author={Nima Arkani-Hamed and Douglas P. Finkbeiner and Tracy R. Slatyer and Neal Weiner},
  journal={Physical Review D},
  year={2009},
  volume={79},
  pages={015014}
}
� > 1GeV 1 . The long range allows a Sommerfeld enhancement to boost the annihilation cross section as required, without altering the weak-scale annihilation cross section during dark matter freeze-out in the early universe. If the dark matter annihilates into the new force carrier φ, its low mass can make hadronic modes kinematically inaccessible, forcing decays dominantly into leptons. If the force carrier is a non-Abelian gauge boson, the dark matter is part of a multiplet of states, and… 

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