Neutrino Mass Matrices with Two Equalities Between the Elements or Cofactors

Abstract

We study the implications of the existence of two equalities between the elements or cofactors of the neutrino mass matrix. There are sixty five structures of this type for each case. Phenomenological implications for unknown parameters like the effective Majorana mass of the electron neutrino and CP-violating phases are examined for the viable cases. To illustrate how such forms of the neutrino mass matrices may be realized, we also present a simple $A_4$ model for one of the classes in each case.

22 pages, 6 figures, 6 table

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• Neutrino mass matrices with one texture zero and a vanishing neutrino mass
• Hybrid Textures of Majorana Neutrino Mass Matrix and Current Experimental Tests
• Near Maximal Atmospheric Neutrino Mixing in Neutrino Mass Models with Two Texture Zeros
• Neutrino mass textures with one vanishing minor and two equal cofactors
• Neutrino Mass Matrices with Two Vanishing Elements/Cofactors
• Hybrid Textures of the Right-Handed Majorana Neutrino Mass Matrix
• Two simple textures of the magic neutrino mass matrix
• 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
• Magic neutrino mass model with broken $\mu -\tau$ symmetry and Leptogenesis
• General lepton textures and their implications
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• Texture of Single Vanishing Subtrace in Neutrino Mass Matrix
• Texture of One Equality in Neutrino Mass Matrix
• Texture of Two Vanishing Subtraces in Neutrino Mass Matrix and Current Experimental Tests
• Neutrino mass matrices with three or four vanishing cofactors and non diagonal charged lepton sector
• Dual models of the neutrino mass spectrum
• A new texture of neutrino mass matrix with three constraints
• Phenomenology of Trimaximal mixing with one texture equality
• Investigation of a kind of neutrino mass matrix
• Implications of CP invariants for flavoured hybrid neutrino mass matrix
• One-parameter Neutrino Mass Matrix and Symmetry Realization
• Obtaining nonvanishing ${\theta }_{13}$ with constrained neutrino Yukawa matrix and implications for flavor model buildings