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arXiv · 0810.5167

Slightly Non-Minimal Dark Matter in PAMELA and ATIC

Ann E. Nelson·Christopher Spitzer
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Abstract

We present a simple model in which dark matter couples to the standard model through a light scalar intermediary that is itself unstable. We find this model has several notable features, and allows a natural explanation for a surplus of positrons, but no surplus of anti-protons, as has been suggested by early data from PAMELA and ATIC. Moreover, this model yields a very small nucleon coupling, well below the direct detection limits. In this paper we explore the effect of this model in both the early universe and in the galaxy.

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Ann E. Nelson, Christopher Spitzer. 2010-07-26. Slightly Non-Minimal Dark Matter in PAMELA and ATIC. https://doi.org/10.1007/jhep10(2010)066

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