Hybrid Textures of the Right-Handed Majorana Neutrino Mass Matrix

Abstract

We perform a systematic study of neutrino mass matrices having a vanishing cofactor and an equality between two cofactors of the mass matrix. Such texture structures of the effective neutrino mass matrix arise from type-I seesaw mechanism when the Dirac neutrino mass matrix is diagonal with equal elements and the right-handed Majorana neutrino mass matrix has hybrid textures with one equality of matrix elements and one zero matrix element. For three right-handed neutrinos there are sixty possible hybrid textures out of which only six are excluded by the present experimental data. We show that such textures can be derived using discrete symmetries. The predictions of experimentally allowed textures are examined for unknown parameters such as the effective Majorana mass of the electron neutrino and the Dirac-type CP-violating phase.

18 pages, 5 figures, 4 tables

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Cited by in corpus (14)

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• Near Maximal Atmospheric Neutrino Mixing in Neutrino Mass Models with Two Texture Zeros
• Trimaximal mixing with a texture zero
• Charged Lepton Corrections to Scaling Neutrino Mixing
• Neutrino mass matrices with one texture equality and one vanishing neutrino mass
• Parallel Lepton Mass Matrices with Texture and Cofactor Zeros
• New Hybrid Textures for Neutrino Mass Matrices
• Investigating the hybrid textures of neutrino mass matrix for near maximal atmospheric neutrino mixing
• A new texture of neutrino mass matrix with three constraints
• Phenomenology of Trimaximal mixing with one texture equality
• New possibilities of hybrid texture of neutrino mass matrix
• Investigation of a kind of neutrino mass matrix
• Implications of CP invariants for flavoured hybrid neutrino mass matrix
• Embedding Generalized CP Symmetry in One Zero Texture Neutrino Mass Models