Mass matrix Ansatz and lepton flavor violation in the THDM - III

Predictive Higgs-fermion couplings can be obtained when a specific texture for the fermion mass matrices is included in the general two-Higgs doublet model. We derive the form of these couplings in the charged lepton sector using a Hermitian mass matrix Ansatz with four-texture zeros. The presence of unconstrained phases in the vertices φililj modifies the pattern of flavor-violating Higgs interactions. Bounds on the model parameters are obtained from present limits on rare lepton flavor violating processes, which could be extended further by the search for the decay τ → μμμ and μ− e conversion at future experiments. The signal from Higgs boson decays φi → τμ could be searched at the large hadron collider (LHC), while e−μ transitions could produce a detectable signal at a future eμ-collider, through the reaction e+μ− → h0 → τ+τ−. PACS numbers: 12.60.Fr, 12.15.Mm, 14.80.Cp