Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-11-18
Phys.Lett.B677:62-70,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages, 7 figures; v2 also includes photons from three-body decays in coupling limits, one additional author, matches versio
Scientific paper
10.1016/j.physletb.2009.05.011
We study gravitino dark matter and slow gravitino decays within the framework of R-violating supersymmetry, with particular emphasis on the flavour dependence of the branching ratios and the allowed R-violating couplings. The dominant decay modes and final state products turn out to be very sensitive to the R-violating hierarchies. Mixing effects can be crucial in correctly deriving the relative magnitude of the various contributions, particularly for heavy flavours with phase space suppression. The study of the strength of different decay rates for the gravitino is also correlated to collider signatures expected from decays of the Next-to-Lightest Supersymmetric Particle (NLSP) and to single superparticle production.
Bomark Nils-Erik
Lola Smaragda
Osland Per
Raklev Are R.
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