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arXiv · hep-ph/9501365

Gamma Rays from Neutralino Annihilation

Gerard Jungman·Marc Kamionkowski
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Abstract

We calculate the flux of cosmic gamma rays expected {}from the annihilation of neutralinos in the Galactic halo. Our calculation of the annihilation cross section to two photons improves the existing calculations by inclusion of exact one-loop diagrams for the amplitudes involving Higgs boson and chargino states as well as those involving fermion and sfermion states. A survey of supersymmetric parameter space shows that numerous models would be observable at the $3σ$ level with an air Cerenkov telescope with an exposure of $10^4 \meter^2 \yr$.

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Gerard Jungman, Marc Kamionkowski. 1995-01-25. Gamma Rays from Neutralino Annihilation. https://doi.org/10.1103/physrevd.51.3121

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