Resonant leptogenesis and TM1 mixing in minimal type-I seesaw model with S4 symmetry

We present an S-4 flavour symmetric model within a minimal seesaw framework resulting in mass matrices that leads to TM1 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 themodel. Anon-zero, resonantly enhanced CPasymmetry 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 vertical bar eta B vertical bar = 6.3 x 10(-10) with the choice of right-handed neutrino mass, M-1 = 10 TeV and mass splitting, d similar or equal to 10(-8).