Lepton Flavor Violating $τ^- \to μ^- V^0$ Decays in the Two Higgs Doublet Model III

Details Lepton Flavor Violating $τ^- \to μ^- V^0$ Decays in the Two Higgs Doublet Model III Lepton Flavor Violating $τ^- \to μ^- V^0$ Decays in the Two Higgs Doublet Model III

2008-12-03

arxiv.org/abs/0812.0727v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

11pages,4 figures,1 table

Scientific paper

In this paper, the lepton flavor violating $\tau^- \to \mu^- V^0(V^0=\rho^0,\phi,\omega)$ decays are studied in the framework of the two Higgs doublet model(2HDM) III. We present a computation of the the $\gamma-$, $Z$ penguin and box diagrams contributions, and make an analysis of their impacts. Our results show that, among the $\gamma-$ penguins, the penguins with neutral Higgs in the loop are very larger than those with charged Higgs in the loop. We find that the model parameter $\lambda_{\tau\mu}$ is tightly constrained at the order of $O(10^{-3})$ and the branching ratios of these decays are available at the experiment measure. With the high luminosity, the B factories have considerable capability to find these LFV processes. On the other hand, these processes can also provide some valuable information to future research and furthermore present the reliable evidence to test the 2HDM III model.

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