New constraints on R-parity violating parameters from μ→eγ and the anomalous magnetic moment of the muon

We analyse one-loop contributions to μ→eγ and to the anomalous magnetic moment of the muon in the Minimal Supersymmetric Standard Model with explicit R-parity violating interactions. We find that in almost all cases the graphs with internal chiralityflip dominate over the graphs in which the chirality flip occurs on th e external (muon) line and we obtain new bounds on products of R-violating couplings of the form λ′ijkλ′mkj.