Gravitino Dark Matter in the mu-from-nu Supersymmetric Standar Model

DANIEL E. LOPEZ -FOGLIANI

Beijing

Encuentro; Dark matter and new physics program; 2013

Chinese Academy of Sciences

From the use of right-handed neutrino superfields in order to avoid a possible mu-problem arises a nice supersymmetric standard model. This model, known as the mu-from-nu supersymmetric standard 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 the detectability of gravitino as dark matter candidate in this context. We place special emphasis in possible signals at the FERMI satellite (FERMI-lat), in the way of a monochromatic gamma line.