Abstract
We show that CP conservation may be violated in the leptonic decays of the Z 0 to a level that may be probed at LEP. We find that there may exist decay asymmetries η ij= BR( Z 0→ e i+ e j )− BR( Z 0→ e j+ e i ) as large as O(10 −7–10 −8), where one of the charged leptons is a τ and the other is an e or μ. Such a value is consistent with all information about neutrino physics and the structure of the leptonic weak interaction and could arise in a simple extension of the standard SU(2) ⊗ U(1) model.
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