Common origin of radiative neutrino mass, dark matter and leptogenesis in scotogenic Georgi-Machacek model
2021
Abstract We explore the phenomenology of the Georgi-Machacek model extended with two Higgs doublets and vector fermion doublets invariant under S U ( 2 ) L × U ( 1 ) Y × Z 4 × Z 2 . The Z 4 symmetry is broken spontaneously while the imposed Z 2 symmetry forbids triplet fields to generate any vacuum expectation value and leading to an inert dark sector providing a viable candidate for dark matter and generate neutrino mass radiatively. Another interesting feature of the model is leptogenesis arising from decay of vector-like fermions. A detailed study of the model is pursued in search for available parameter space consistent with the theoretical and experimental observations for dark matter, neutrino physics, flavor physics, matter-antimatter asymmetry in the Universe.
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