Abstract
We consider the supersymmetric extension of the Standard Model with neutrino Yukawa interactions and R-parity violation. We found that R-parity breaking term λiν¯iHuHd leads to an additional F-type contribution to the Higgs scalar potential, and thus to the masses of supersymmetric Higgs bosons. The most interesting consequence is the modification of the tree-level expression for the lightest neutral supersymmetric Higgs boson mass. It appears that due to this contribution the tree bound on the lightest Higgs mass may be shifted upwards, thus taking into account radiative corrections might open the part of the model parameter space consistent with the observation of the Higgs boson at LHC, which is not natural in the MSSM. We also calculate one-loop corrections to physical neutrino masses in case of neutrino-neutralino mixing and discuss the influence of this mass shift on parameter constraints.
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