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Some Remarks on the Search for CP Violation in Z-Decays

W. Bernreuther·O. Nachtmann
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Abstract

We discuss some issues arising in the search for CP violation in the decays Z -> tau+ tau- and Z -> b \bar b X. The form-factor and the effective Lagrangian approach to parametrize CP-violating effects are compared. We emphasize the interest to study both real and imaginary parts of CP-violating form factors like the weak dipole moment form factor d_tau^Z(m^2_Z) of the tau-lepton. We propose an 'optimal' way to search for CP violation when Z -> b \bar b X events have to be selected on a statistical basis from the total number of Z hadronic decays.

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W. Bernreuther, O. Nachtmann. 1996-03-18. Some Remarks on the Search for CP Violation in Z-Decays. https://arxiv.org/abs/hep-ph/9603331

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