Constraints on R-parity violating interactions from μ → eγ

The lepton number violating process μ → eγ is used to study the lepton number violating couplings in MSSM extended by terms violating R-parity explicitly. Bounds are obtained for the products of λ- or λ′-type couplings. It is found that many of these limits are more stringent than the ones obtained previously.