Photon, neutrino and charged particle spectra from R-violating gravitino decays
Peer reviewed, Journal article
Published version
Permanent lenke
https://hdl.handle.net/1956/9832Utgivelsesdato
2010-03-22Metadata
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Originalversjon
https://doi.org/10.1016/j.physletb.2010.02.050Sammendrag
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.