Gravitino Dark Matter in the $\mu \nu$SSM

D. E. LOPEZ -FOGLIANI

Madrid

Workshop; Theoretical mini workshop on dark matters; 2009

Instituto de Física Teórica (UAM-CSIC)

The mu-from-nu supersymmetric standard model use right-handed neutrino superfields to solve the mu-problem of the MSSM and to give mass to the neutrinos at the same time. This model breaks R-parity explicitly and involves a single scale ? that of the soft-breaking-terms. This scale is expected to be very close to the electroweak scale. In addition, the breaking of R-parity and the origin of the mu-term are intimately related with neutrino physics. These features give a rich phenomenology, opening the possibility of clear signals of new physics at the LHC. In this talk we discuss neutrino sectors of the model, and the detectability of gravitino as dark matter candidate at the FERMI satellite (FERMI-lat), trough the detection of monochromatic gamma line.