  We study the lightest Higgs boson decays $h\rightarrow MZ$ in the $\mu$ from
$\nu$ supersymmetric standard model ($\mu\nu$SSM), where $M$ is a vector meson
$(\rho,\omega,\phi,J/\Psi,\Upsilon)$. Compared to the minimal supersymmetric
standard model (MSSM), the $\mu\nu$SSM introduces three right-handed neutrino
superfields, which lead to the mixing of the Higgs doublets with the
right-handed sneutrinos. The mixing affects the lightest Higgs boson mass and
the Higgs couplings. In suitable parameter space, the $\mu\nu$SSM can give
large new physics (NP) contributions to the signal strengths of $h\rightarrow
MZ$ and $h\rightarrow \gamma\gamma$, which may be detected by a 100 TeV
collider or the other future high energy colliders.

High Energy Physics - Phenomenology