flavor-violation tau decays
نویسندگان
چکیده
There are many models beyond the standard model predicting the existence of non-universal gauge bosons Z ′ , which can give rise to very rich phenomena. We calculate the contributions of the non-universal gauge bosons Z ′, predicted by topcolor-assisted technicolor (TC2) models and flavor-universal TC2 models, to the lepton flavor-violation tau decays τ → liγ and τ → lilj lk. We find that the branching ratio Br(τ −→ liljlk) is larger than that of the process τ −→ liγ in all of the parameter space. Over a sizable region of the parameter space, we have Br(τ −→ liljlk) ∼ 10 −8, which may be detected in the future experiments. ∗E-mail:[email protected]
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