Common origin of radiative neutrino mass, dark matter and leptogenesis in scotogenic Georgi-Machacek model

Abstract

We explore the phenomenology of the Georgi-Machacek model extended with two Higgs doublets and vector fermion doublets invariant under $SU(2{)}_L\times U(1{)}_Y\times {\mathcal{Z}}_4\times {\mathcal{Z}}_2$. The ${\mathcal{Z}}_4$ symmetry is broken spontaneously while the imposed ${\mathcal{Z}}_2$ 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.

Comments: version to appear in NPB