Gamma Ray Spectrum from Gravitino Dark Matter Decay

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dc.creatorIbarra, Alejandro
dc.creatorTran, David
dc.date2007-09-28
dc.date2008-01-23
dc.date.accessioned2026-07-07T11:37:36Z
dc.date.available2026-07-07T11:37:36Z
dc.descriptionGravitinos are very promising candidates for the cold dark matter of the Universe. Interestingly, to achieve a sufficiently long gravitino lifetime, R-parity conservation is not required, thus preventing any dangerous cosmological influence of the next-to-lightest supersymmetric particle. When R-parity is violated, gravitinos decay into photons and other particles with a lifetime much longer than the age of the Universe, producing a diffuse gamma ray flux with a characteristic spectrum that could be measured in future experiments, like GLAST or AMS-02. In this letter we compute the energy spectrum of photons from gravitino decay and discuss its main qualitative features.
dc.description4 pages, 1 figure. Minor changes. Version accepted for publication in PRL
dc.identifierhttps://arxiv.org/abs/0709.4593
dc.identifierhttp://arxiv.org/abs/0709.4593
dc.identifierPhys.Rev.Lett.100:061301,2008
dc.identifierdoi:10.1103/PhysRevLett.100.061301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199260
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleGamma Ray Spectrum from Gravitino Dark Matter Decay
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