CP violation in radiative Z decays |
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Authors: | D Bruß O Nachtmann P Overmann |
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Institution: | 1. Physics Department, University of Oxford, Clarendon Laboratory, Parks Road, OX1 3PU, Oxford, UK 2. Institut für Theoretische Physik, Universit?t Heidelberg, Philosophenweg 16, D-69120, Heidelberg, Germany
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Abstract: | We propose to test the CP symmetry in the reactions Z → μ+μ?γ and Z → τ+τ?γ. The experimental analysis of angular correlations allows to determine a set of effective couplings: the electric and weak dipole moments of the muon and the tau lepton, and in particular chirality conserving 4-particle couplings, all of which can be induced by CP-violation in renormalizable theories of electroweak interactions beyond the Standard Model. We update an indirect bound on the weak dipole moment of the muon. |
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