Discriminating Hybrid Textures of Neutrino Mass Matrix in the Light of Latest Neutrino Data and Baryon Asymmetry

Abstract

We study all possible hybrid textures Majorana neutrino mass matrix which are allowed from neutrino oscillation as well as cosmology data when the charged lepton mass matrix is assumed to take the diagonal form. Using the two constraints on neutrino mass matrix elements imposed by hybrid textures, we numerically evaluate the neutrino parameters like the lightest neutrino mass, one Dirac CP phase and two Majorana CP phases, by using the global fit \(3\sigma \) values of three mixing angles and two mass squared differences. We then constrain hybrid texture neutrino mass matrices from the requirement of producing correct baryon asymmetry through the mechanism of leptogenesis. We constrain the light neutrino parameter space as well as the lightest right-handed neutrino mass from the constraint on baryon asymmetry of the Universe from Planck experiment.