A Radiative Neutrino Mass Model in Dark Non-Abelian Gauge Symmetry
Abstract
We discuss a model based on dark sector described by non-Abelian SU(2)D gauge symmetry where we introduce SU(2)L × SU(2)D bi-doublet vector-like leptons to generate active neutrino masses and kinetic mixing between SU(2)D and U(1)Y gauge fields at one-loop level. After spontaneous symmetry breaking of SU(2)D, we have remnant Z4 symmetry guaranteeing stability of dark matter candidates. We formulate neutrino mass matrix and related lepton flavor violating processes and discus dark matter physics estimating relic density. It is found that our model realize multicomponent dark matter scenario due to the Z4 symmetry and relic density can be explained by gauge interactions with kinetic mixing effect.
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