Breit-Wigner Enhancement of Dark Matter Annihilation

Details Breit-Wigner Enhancement of Dark Matter Annihilation Breit-Wigner Enhancement of Dark Matter Annihilation

2008-11-29

arxiv.org/abs/0812.0072v1

Phys.Rev.D79:095009,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 figures

Scientific paper

We point out that annihilation of dark matter in the galactic halo can be
enhanced relative to that in the early universe due to a Breit-Wigner tail, if
the dark matter annihilates through a pole just below the threshold. This
provides a new explanation to the "boost factor" which is suggested by the
recent data of the PAMELA, ATIC and PPB-BETS cosmic-ray experiments.

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