  R-parity violation modifies the phenomenology of supersymmetric models
considerably. We study a version of NMSSM, which contains right-handed
neutrinos and in which spontaneous R-parity violation is possible. We study the
ensuing effects of spontaneous breaking to the Higgs decay modes, taking into
account the measured mass of the Higgs boson and experimental constraints,
including rare decays. We find that a possible light scalar, dominantly a
sneutrino, helps to increase the Standard Model (SM) Higgs-like scalar mass to
the measured value. At the same time, a lighter stop than in the MSSM is
allowed. The Higgs decay rates in the studied model can somewhat differ from
the SM expectations, although the most prominent difference is a universal
suppression in the couplings due to the mixing of doublet scalars with
singlets. The charged, pseudoscalar, and other than the two lightest scalar
Higgses are typically heavier than 1 TeV in the parameter region where R-parity
is spontaneously broken.
