Phenomenology of dark matter annihilation into a long-lived intermediate state

@inproceedings{Rothstein2009PhenomenologyOD,
  title={Phenomenology of dark matter annihilation into a long-lived intermediate state},
  author={I. Rothstein and Thomas Schwetz and Jure Zupan},
  year={2009}
}
We propose a scenario where Dark Matter (DM) annihilates into an intermediate state which travels a distance ? ? v/? on the order of galactic scales and then decays to Standard Model (SM) particles. The long lifetime disperses the production zone of the SM particles away from the galactic center and hence, relaxes constraints from gamma ray observations on canonical annihilation scenarios. We utilize this set up to explain the electron and positron excesses observed recently by PAMELA, ATIC and… CONTINUE READING

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