Lepton-flavour violating Z0 decays in a minimal SUSY standard model with explicitly broken R-parity via L-violation

We study the lepton-flavour violating Z0 decays in a minimal supersymmetric standard model with explicitly broken R-parity via L-violation. These rare decays arise as a single loop effect mediated by scalar fermions and are found to be dominated by top quark in the loop. We obtain a combined fit to the available limits on the decays Z0→lal̄b(a≠b; a,b=e,μ,τ) which imposes certain limits on the products of couplings arising from the LQdc operator of the superpotential.