Lepton Flavor Violating tau --> 3mu Decay in Type-III Two Higgs Doublet Model

Details Lepton Flavor Violating tau --> 3mu Decay in Type-III Two Higgs Doublet Model Lepton Flavor Violating tau --> 3mu Decay in Type-III Two Higgs Doublet Model

2008-09-18

arxiv.org/abs/0809.3072v1

Phys.Rev.D79:015006,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages, 11 figures

Scientific paper

10.1103/PhysRevD.79.015006

We study the current structure of the lepton flavor violating $\tau\to3\mu$ decay in Type-III 2HDM. This model has many coupling constants which affect this decay. We find that each coupling constant corresponds to the different final-state momenta distribution and vice versa. Using this fact, we suggest how to determine the current structure. We also find the upper limit $|\eta_{23}^E\eta_{22}^E|<0.00022$ in the case that all Higgs bosons except for the lighter CP even neutral one $h^0$ are decoupled, $M_{h^0}=115$GeV and $\cos\beta=1/\sqrt{2}$. The observable difference between the MSSM and type-III 2HDM is also discussed.

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