PHYSICAL REVIEW D 93, 115026 (2016)

ISSN: 2470-0010, SCI

Lepton flavor violating decay of SM-like Higgs boson in a radiative neutrino mass model

T. T. Thuc, L. T. Hue, H. N. Long and T. Phong Nguyen

The lepton flavor violating decay of the Standard Model-like Higgs boson (LFVHD) is discussed in the framework of the radiative neutrino mass model built in [K. Nishiwaki, H. Okada, and Y. Orikasa, Phys. Rev. D 92, 093013 (2015)]. The branching ratio (BR) of the LFVHD is shown to reach 10−5 in the most interesting region of the parameter space shown in [K. Nishiwaki, H. Okada, and Y. Orikasa, Phys. Rev. D 92, 093013 (2015)]. The dominant contributions come from the singly charged Higgs mediations, namely, the coupling of h
2 with exotic neutrinos. Furthermore, if the doubly charged Higgs boson is heavy enough to allow the mass of h
2 around 1 TeV, the mentioned BR can reach 10−4. In addition, we obtain that the large values of Br( h → μτ)lead to very small ones of Br( h → eτ), much smaller than the various sensitivities of current experiments.

DOI: 10.1103/PhysRevD.93.115026

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