CP VIOLATION IN RADIATIVE Z-DECAY

We propose to test the CP symmetry in the reactions Z --> mu(+)mu(-)ga mma and Z --> tau(+)tau(-)gamma. The experimental analysis of angular correlations allows to determine a set of effective couplings: the ele ctric and weak dipole moments of the muon and the tau lepton, and in p articular chirality conserving 4-particle couplings, all of which can be induced by CP-violation in renormalizable theories of electroweak i nteractions beyond the Standard Model. We update an indirect bound on the weak dipole moment of the muon.