Cosmic Ray Signatures from Decaying Gravitino Dark Matter

Presented at: European Physical Society Europhysics Conference on High Energy Physics. Krakow, Poland, July 16-22, 2009We study the charged cosmic rays arising from the slow decay of gravitino dark matter within supersymmetric scenarios with trilinear R-parity violation. It is shown that operators of the LLE type can very well account for the recent anomalies in cosmic ray electron and positron data reported by PAMELA, ATIC and Fermi LAT, without violating any other bounds. This scenario will soon be tested by the Fermi LAT data on diffuse gamma ray emission.publishedVersio