Lepton flavor-changing processes in R-parity violating MSSM: Z->l_i l_j and \gamma\gamma->l_i l_j under new bounds from l_i->l_j \gamma

Abstract

We examine the lepton flavor-changing processes in R-parity violating MSSM. First, we update the constraints on the relevant R-violating couplings by using the latest data on the rare decays l_i->l_j \gamma. We find that the updated constraints are much stronger than the old ones from rare Z-decays at LEP. Then we calculate the processes Z->l_i l_j and \gamma\gamma->l_i l_j. We find that with the updated constraints the R-violating couplings can still enhance the rates of these processes to the sensitivity of GigaZ and photon-photon collision options of the ILC.

Comments: Version in Nucl.Phys.B (discussions added)