Abstract
Multidimensional modification of gravity with a smaller mass scale of the gravitational interaction is considered. Stable by assumption dark matter particles could decay via interactions with virtual black holes. The decay rates of such processes are estimated. It is shown that with the proper fixation of the parameters the decays of these ultra-massive particles can give noticeable contribution to the flux of high energy cosmic rays in particular, near the Greisen–Zatsepin–Kuzmin limit. Such particles can also create neutrinos of very high energies observed in the existing huge underwater or ice-cube detectors.
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The work by E.V. Arbuzova and A.A. Nikitenko was supported by RSF grant no. 22-22-00294.
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Arbuzova, E.V., Dolgov, A.D. & Nikitenko, A.A. Cosmic Rays from Heavy Particle Decays. Phys. Atom. Nuclei 87, 49–55 (2024). https://doi.org/10.1134/S1063778824020066
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DOI: https://doi.org/10.1134/S1063778824020066