Regular Article - Theoretical Physics
Resonant leptogenesis and TM mixing in minimal type-I seesaw model with S symmetry
Department of Physics, Tezpur University, 784028, Tezpur, India
Accepted: 21 November 2021
Published online: 2 December 2021
We present an S flavour symmetric model within a minimal seesaw framework resulting in mass matrices that leads to TM mixing. Minimal seesaw is realized by adding two right-handed neutrinos to the Standard Model. The model predicts Normal Hierarchy (NH) for neutrino masses. Using the constrained six-dimensional parameter space of the model, we have evaluated the effective Majorana neutrino mass, which is the parameter of interest in neutrinoless double beta decay experiments. The possibility of explaining baryogenesis via resonant leptogenesis is also examined within the model. A non-zero, resonantly enhanced CP asymmetry generated from the decay of right-handed neutrinos at the TeV scale is studied, considering flavour effects. The evolution of lepton asymmetry is discussed by solving the set of Boltzmann equations numerically and obtain the value of baryon asymmetry to be with the choice of right-handed neutrino mass, TeV and mass splitting, .
© The Author(s) 2021
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