Alexander V. Belikov, Joseph Silk
The spectrum of gamma rays from annihilating dark matter is expected to have distinguishable features if the strength of the background signal is not too large. Here we investigate the possibility of fitting the hypothetical spectra of gamma-rays from annihilating dark matter at the Galactic Center by a super-exponential template. By generating and analyzing mock data for several on-going and future experiments (HESS, CTA and DMA), we find that preference for a super-exponential template (over an exponential) might favour the presence of dark matter annihilating to $\tau^+\tau^-$ and $\mu^+\mu^-$ annihilation channels.
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http://arxiv.org/abs/1304.5238
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