Minimal lepton flavour structures lead to non-maximal 2-3 mixing

Abstract

Present data prefer a large but non-maximal 2-3 mixing in the lepton sector. We argue that this value, in connection with $\sin {\theta }_{13}\simeq 0.15$, is the generic outcome of minimal flavour structures. We present a few different incarnations of this statement, in terms of lepton mass matrices depending on a small number of parameters, that can be justified by discrete flavour symmetries. We also propose a general procedure to study the correlation between ${\theta }_{23}$, the absolute scale and ordering of the neutrino masses, and the leptonic CP-violating phases.

24 pages, 10 figures

References in corpus (9)

• Observation of electron-antineutrino disappearance at Daya Bay
• Neutrino Mass and Mixing with Discrete Symmetry
• Global fit to three neutrino mixing: critical look at present precision
• Search for Neutrinoless Double-Beta Decay in ${}^{136}$Xe with EXO-200
• Neutrino mass from Cosmology
• The Horizontal Symmetry for Neutrino Mixing
• Is S4 the horizontal symmetry of tri-bimaximal lepton mixing?
• Nonzero |U_e3| from Charged Lepton Corrections and the Atmospheric Neutrino Mixing Angle
• Heptagonic Symmetry for Quarks and Leptons

Cited by in corpus (3)

• Two-zero Majorana textures in the light of the Planck results
• Update on two-zero textures of the Majorana neutrino mass matrix in light of recent T2K, Super-Kamiokande and NO$\nu$A results
• Neutrino observables from predictive flavour patterns