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

References in corpus (12)

• Observation of electron-antineutrino disappearance at Daya Bay
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
• Global status of neutrino oscillation parameters after Neutrino-2012
• Phenomenology of Two-Texture Zero Neutrino Mass Matrices
• Zero minors of the neutrino mass matrix
• Phenomenological Implications of a Class of Neutrino Mass Matrices
• Texture 4 zero Fritzsch-like lepton mass matrices
• Neutrino Mass Matrices with a Texture Zero and a Vanishing Minor
• Implications of Fritzsch-like lepton mass matrices
• Parallel hybrid textures of lepton mass matrices
• Tribimaximal mixing in neutrino mass matrices with texture zeros or vanishing minors