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 h2 with exotic neutrinos. Furthermore, if the doubly charged Higgs boson is heavy enough
to allow the mass of h2 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.