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Constraints on heavy decaying dark matter with current gamma-ray measurements

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arxiv 2108.01678 v2 pith:DNANDMPN submitted 2021-08-03 hep-ph astro-ph.CO

Constraints on heavy decaying dark matter with current gamma-ray measurements

classification hep-ph astro-ph.CO
keywords darkmatterconstraintsboundsdecayinggamma-rayheremathrm
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Among the several strategies for indirect searches of dark matter, one very promising one is to look for the gamma-rays from decaying dark matter. Here we use the most up-to-date upper bounds on the gamma-ray flux from $10^5$ to $10^{11}$ GeV, obtained from CASA-MIA, KASCADE, KASCADE-Grande, Pierre Auger Observatory, and Telescope Array. We obtain global limits on dark matter lifetime in the range of masses $m_\mathrm{DM}=[10^7-10^{15}]~\mathrm{GeV}$. We provide the bounds for a set of decay channels chosen as representatives. The constraints derived here are new and cover a region of the parameter space not yet explored. We compare our results with the projected constraints from future neutrino telescopes, in order to quantify the improvement that will be obtained by the complementary high-energy neutrino searches.

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Cited by 5 Pith papers

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