Photon, Neutrino and Charged Particle Spectra from R-violating Gravitino Decays

Details Photon, Neutrino and Charged Particle Spectra from R-violating Gravitino Decays Photon, Neutrino and Charged Particle Spectra from R-violating Gravitino Decays

2009-11-17

arxiv.org/abs/0911.3376v2

Phys.Lett.B686:152-161,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

Version published in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2010.02.050

We study photonic, neutrino and charged particle signatures from slow decays of gravitino dark matter in supersymmetric theories where R-parity is explicitly broken by trilinear operators. Photons and (anti-)fermions from loop and tree-level processes give rise to spectra with distinct features, which, if observed, can give crucial input on the possible mass of the gravitino and the magnitude and flavour structure of R-violating operators. Within this framework, we make detailed comparisons of the theoretical predictions to the recent experimental data from PAMELA, ATIC and Fermi LAT.

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