Lepton Flavor Violating $\tau$ Decays in TeV Scale Type I See-Saw and Higgs Triplet Models

Abstract

The lepton flavour violating (LFV) $\tau$ decays $\tau \to (e,\mu )\gamma$ and $\tau \to 3\mu$ are investigated in the frameworks of the TeV scale type I see-saw and Higgs Triplet (or type II see-saw) models. Predictions for the rates of these processes are obtained. The implications of the existing stringent experimental upper bounds on the $\mu \to e+\gamma$ and $\mu \to 3e$ decay branching ratios for the predictions of the $\tau \to (e,\mu )\gamma$ and $\tau \to 3\mu$ decay rates are studied in detail. The possibilities to observe the indicated LFV $\tau$ decays in present and future experiments are analysed.

22 pages, Latex, 3 figures (to be published in JHEP)

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• Dark matter and flavor changing in the flipped 3-3-1 model
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• Flavour and dark matter in a scoto/type-II seesaw model
• Lepton Flavour Violation Tests of Type II Seesaw Leptogenesis
• The $\rho$ parameter and $H^0\to {\ell }_i{\ell }_j$ in models with TeV sterile neutrinos
• Testing the nature of neutrinos from four-body $\tau$ decays
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• Doubly-charged scalar in rare decays of $B_c$ meson
• Lepton flavor violation from SUSY with non-universal scalars
• Lepton flavor violation beyond the MSSM
• Scoto-seesaw model implied by flavor-dependent Abelian gauge charge
• Neutrino Physics, Lepton Flavour Violation and the LHC
• Revisiting lepton flavor violation: $\tau$ and meson decays