Phenomenological Analysis of Two Texture Zeros/Vanishing Cofactors of Neutrino Mass Matrices

Abstract

We study the phenomenological implications of the recent neutrino data for class B of two texture zeros and two vanishing cofactors for Majorana neutrinos in the flavor basis. We find that classes $B_{1}$($B_2$) of two texture zeros and classes $B_5$($B_6$) of two vanishing cofactors have similar predictions for neutrino oscillation parameters for the same mass hierarchy. For inverted mass spectrum, a preference for a shift in the quadrant of the Dirac-type CP violating phase ($\delta$) in contrast to the earlier analyses has been predicted for class B of two texture zeros and two vanishing cofactors for the known relatively large value of reactor neutrino mixing angle ($\theta _{13}$).