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2012

Implications of a 130 GeV Gamma-Ray Line for Dark Matter

Buckley, Matthew R., Hooper, Dan

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Recent reports of a gamma-ray line feature at ~130 GeV in data from the Fermi Gamma-Ray Space Telescope have generated a great deal of interest in models in which dark matter particles annihilate with a sizable cross section to final states including photons.

In this article, we take a model-independent approach, and discuss a number of possibilities for dark matter candidates which could potentially generate such a feature.
While we identify several scenarios which could lead to such a gamma-ray line, these models are each fairly constrained.
In particular, viable models require large couplings (g>1-3), and additional charged particles with masses in the range of approximately ~130-200 GeV.

Implications of a 130 GeV Gamma-Ray Line for Dark Matter · Around

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