  In this paper, we give a brief review of the Minimal Supersymmetric Standard
Model (MSSM) and "$\mu$ from $\nu$" Supersymmetric Standard Model ($\mu
\nu$SSM). Then we propose a generalization of $\mu \nu$SSM in order to explain
the recent ATLAS, CMS and LHCb results. This "new" $\mu \nu$SSM generalizes the
superpotential $W_{suppot}$ of $\mu \nu$SSM by including two terms that
generate a mixing among leptons, gauginos and higgsinos while keeping the
charginos and neutralinos masses unchanged. Also, it is potentially interesting
for cosmological applications as it displays flat directions of the
superpotential and a viable leptogenesis mechanism.
