Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-12-03
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.
Guo Wei
Li Wenjun
Liu Gongwei
ma Yanqin
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