Gamma-ray detection from gravitino dark matter decay in the $\mu \nu$SSM

Ki-Young Choi, Daniel E. Lopez-Fogliani, Carlos Munoz +1

The $\mu \nu$SSM provides a solution to the $\mu$-problem of the MSSM and explains the origin of neutrino masses by simply using right-handed neutrino superfields. Given that R-parity is…