Phenomenological Analysis of Hybrid Textures of Neutrinos

Abstract

We present a comprehensive phenomenological analysis of the allowed hybrid textures of neutrinos. Out of a total of sixty hybrid textures with one equality between the elements of neutrino mass matrix and one texture zero only twenty three are found to be viable at 99% C.L. whereas the earlier analysis found fifty four to be viable. We examine the phenomenological implications of the allowed hybrid textures including Majorana type CP-violating phases, 1-3 mixing angle and Dirac type CP-violating phase, $\delta$. We, also, obtain lower bound on effective Majorana mass for all the allowed hybrid textures.

To appear in Phys. Letts. B. Two figures added

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