Active and sterile neutrino phenomenology with A4 based minimal extended seesaw

We study a model of neutrino within the framework of minimal extended seesaw (MES), which plays an important role in active and sterile neutrino phenomenology in (3+1) scheme. The A(4) flavor symmetry is augmented by additional Z(4) x Z(3) symmetry to constraint the Yukawa Lagrangian of the model. We use non-trivial Dirac mass matrix, with broken mu - tau symmetry, as the origin of leptonic mixing. Interestingly, such structure of mixing naturally leads to the non-zero reactor mixing angle theta(13). Non-degenerate mass structure for right-handed neutrino M-R is considered so that we can further extend our study to Leptogenesis. We have also considered three different cases for sterile neutrino mass, M-S to check the viability of this model, within the allowed 3 sigma bound in this MES framework. (C) 2019 The Author(s). Published by Elsevier B.V.