Decaying light particles in the SHiP experiment. II. Signal rate estimates for light neutralinos

Considering the supersymmetric models with light neutralino and R-parity violation, we perform estimates of the signal rate expected at the recently proposed fixed target SHiP experiment exploiting the CERN SPS beam of 400 GeV protons. We extend the existing studies by introducing new production channels (in particular, through the beauty mesons) and decay modes. We also constrain the model parameter space from analysis of negative results of the CHARM experiment.