Natural Maximal ny_my - ny_tau Mixing

Abstract

The naturalness of maximal mixing between myon- and tau-neutrinos is investigated. A spontaneously broken nonabelian generation symmetry can explain a small parameter which governs the deviation from maximal mixing. In many cases all three neutrino masses are almost degenerate. Maximal ny_my-ny_tau-mixing would indicate that the leading contribution to the light neutrino masses arises from the expectation value of a heavy weak triplet rather than from the seesaw mechanism. In this scenario the deviation from maximal mixing is predicted to be less than about 1%.

13 pages,LaTex

Cited by in corpus (34)

• Tri-Bimaximal Neutrino Mixing from Discrete Symmetry in Extra Dimensions
• Mass and Flavor Mixing Schemes of Quarks and Leptons
• Neutrino Masses and Mixing: Evidence and Implications
• A discrete symmetry group for maximal atmospheric neutrino mixing
• Models of Neutrino Masses and Mixings
• Hybrid Seesaw Neutrino Masses with A_4 Family Symmetry
• Naturalness of nearly degenerate neutrinos
• A Flavor Symmetry Model for Bilarge Leptonic Mixing and the Lepton Masses
• From Hierarchical to Partially Degenerate Neutrinos via Type II Upgrade of Type I See-Saw Models
• Permutation Symmetry for Neutrino and Charged-Lepton Mass Matrices
• The Symmetry behind Extended Flavour Democracy and Large Leptonic Mixing
• Stability of Neutrino Mass Degeneracy
• Models of Neutrino Masses and Mixings
• See-saw Mechanisms for Dirac and Majorana Neutrino Masses
• SU(3) Gauge Family Symmetry and Prediction for the Lepton-Flavor Mixing and Neutrino Masses with Maximal Spontaneous CP Violation
• Large and Almost Maximal Neutrino Mixing within the Type II See-Saw Mechanism
• Leptogenesis in Unified Theories with Type II See-Saw
• Low scale gravity as the source of neutrino masses?
• Diraxiogenesis
• A simple scheme for masses and mixings of quarks and neutrinos
• Large Neutrino Mixing with Universal Strength of Yukawa Couplings
• Simple Connection Between Atmospheric and Solar Neutrino Vacuum Oscillations
• Naturally Degenerate Right Handed Neutrinos
• CP and Lepton-Number Violation in GUT Neutrino Models with Abelian Flavour Symmetries
• Electron-Neutrino Majorana Mass and Solar Neutrino Oscillations
• Gauge Theory Model of the Neutrino and New Physics Beyond the Standard Model
• Non-Zero ${\theta }_{13}$ and ${\delta }_{CP}$ in a Neutrino Mass Model with $A_4$ Symmetry
• Renormalization-Group Effects in the SO(3) Gauge Model With Nearly Degenerate Neutrino Masses and Bi-maximal Mixing
• Spontaneous Breaking of Flavor Symmetry and Naturalness of Nearly Degenerate Neutrino Masses and Bi-maximal Mixing
• Gauge Origin of Baryon Number Conservation and Suppressed Neutrino Masses From Five Dimensions
• Leptonic CP Violation and Wolfenstein Parametrization for Lepton Mixing
• Theta_{13}, Rare Decays and Leptonic CP Violation
• $SU(3{)}_F$ Gauge Family Model and New Symmetry Breaking Scale From FCNC Processes
• The Mass Difference of $F-\bar{F}$ with SO(3) Family Gauge Symmetry