Higgs mediated lepton flavor violating tau decays $τ\to μγ$ and $τ\to μγγ$ in effective theories

Details Higgs mediated lepton flavor violating tau decays $τ\to μγ$ and $τ\to μγγ$ in effective theories Higgs mediated lepton flavor violating tau decays $τ\to μγ$ and $τ\to μγγ$ in effective theories

2008-04-16

arxiv.org/abs/0804.2652v1

Phys.Rev.D78:017302,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 3 figures

Scientific paper

10.1103/PhysRevD.78.017302

The size of the branching ratios for the $\tau \to \mu \gamma$ and $\tau \to \mu \gamma \gamma$ decays induced by a lepton flavor violating Higgs interaction $H\tau \mu$ is studied in the frame of effective field theories. The best constraint on the $H\tau \mu$ vertex, derived from the know measurement on the muon anomalous magnetic moment, is used to impose the upper bounds $Br(\tau \to \mu \gamma)<2.5\times 10^{-10}$ and $Br(\tau \to \mu \gamma \gamma)<2.3\times 10^{-12}$, which are more stringent than current experimental limits on this class of transitions.

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