A General Classification of Three-Neutrino Models and U_e3

Abstract

A classification of models with three light neutrinos is given. This classification includes virtually all of the three-neutrino models proposed in the last few years, of which there are approximately one hundred. The essential ideas, attractive features, and characteristic problems of the different classes of model are discussed. The classification is based principally on how the large ν_μ - ν_τ mixing is obtained. A general discussion of the mixing parameter U_{e3} is then given, showing what values are to be expected for it in each type of model.

37 pages, LaTex. Several serious typos corrected

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• A different see-saw formula for neutrino masses
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• Probing the seesaw mechanism with neutrino data and leptogenesis
• Progress in the physics of massive neutrinos
• Non-vanishing $U_{e3}$ and $\cos 2{\theta }_{23}$ from a broken $Z_2$ symmetry
• Running Neutrino Masses, Leptonic Mixing Angles and CP-Violating Phases: From $M_{\mathrm{Z}}$ to ${\Lambda }_{\mathrm{GUT}}$
• Predictive Schemes for Bimaximal Neutrino Mixings
• Large Solar Angle and Seesaw Mechanism: a Bottom-up Perspective
• Fermion Masses and Mixing and CP-Violation in SO(10) Models with Family Symmetries
• Structure of neutrino mass matrix and CP violation
• One-loop corrections to the seesaw mechanism in the multi-Higgs-doublet Standard Model
• Phased Breaking of mu-tau symmetry and Leptogenesis
• Neutrino mass matrix: inverted hierarchy and CP violation
• From weak-scale observables to leptogenesis
• Softly broken lepton number L_e - L_μ- L_τwith non-maximal solar neutrino mixing
• Realization of the Large Mixing Angle Solar Neutrino Solution in an SO(10) Supersymmetric Grand Unified Model
• Charged lepton contributions to the solar neutrino mixing and theta_13
• Neutrinoless Double Beta Decay and Future Neutrino Oscillation Precision Experiments
• Deviation of Atmospheric Mixing from Maximal and Structure in the Leptonic Flavor Sector
• Bimaximal Neutrino Mixings from Lopsided Mass Matrices
• Neutrino masses through a type II seesaw mechanism at TeV scale
• U(e3) from physics above the GUT scale
• Neutrino Masses and Mixing Angles in a Realistic String-Inspired Model
• Lepton Flavour Violating Heavy Higgs Decays Within the nuMSSM and Their Detection at the LHC
• Almost Maximal Lepton Mixing with Large T Violation in Neutrino Oscillations and Neutrinoless Double Beta Decay
• Large Neutrino Mixing from Renormalization Group Evolution
• Large Mixing Angle MSW Solution in an SU(3)_LxU(1)_N Gauge Model with Two-loop Radiative Mechanism
• Minimal Seesaw Textures with Two Heavy Neutrinos
• Obtaining the large angle MSW solution to the solar neutrino problem in models
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• Majorana Neutrino Masses and Neutrino Oscillations
• Minimal Textures in Seesaw Mass Matrices and their low and high Energy Phenomenology
• Hybrid textures in minimal seesaw mass matrices
• See-saw Mechanisms for Dirac and Majorana Neutrino Masses
• The Oscillation Probability of GeV Solar Neutrinos of All Active Species
• Lepton Masses from a TeV Scale in a 3-3-1 Model
• Physics of Neutrino Mass
• Predictive Framework with a Pair of Degenerate Neutrinos at a high scale
• Leptogenesis and low energy observables in left-right symmetric models
• Nearly Bi-Maximal Neutrino Mixing, Muon g-2 Anomaly and Lepton-Flavor-Violating Processes
• Doubly Lopsided Mass Matrices from Unitary Unification
• Lepton Flavor Violation in Supersymmetric SO(10) Grand Unified Models
• A Predictive Ansatz for Neutrino Mixing and Leptogenesis
• Lepton Flavor Violation in the SUSY-GUT Models with Lopsided Mass Matrix
• Implications of texture 4 zero lepton mass matrices for U_{e3}
• Large Lepton Mixings Induced by Sterile Neutrino
• Minimal archi-texture for neutrino mass matrices
• SUSY GUT Models of Neutrino Mass and mu to e gamma
• Two Zero Mass Matrices and Sterile Neutrinos
• Bounds on the Neutrino Mixing Angles and CP Phase for an SO(10) Model with Lopsided Mass Matrices
• Neutrino Democracy And Other Phenomenology From 5D SO(10)
• Radiatively Generated ${\nu }_e$ Oscillations: General Analysis, Textures and Models
• Three-flavour effects and CP- and T-violation in neutrino oscillations
• The scaling of lepton dipole moments with lepton mass
• Discriminating neutrino mass models using Type II seesaw formula
• Explaining Why the u and d Quark Masses are Similar
• Proposal for U.S. participation in Double-CHOOZ: A New theta-13 Experiment at the Chooz Reactor
• Neutrino oscillations beyond two flavours
• Seesaw Neutrino Masses with Large Mixings from Dimensional Deconstruction
• Asymmetry and Minimality of Quark Mass Matrices
• Gauge Origin of Baryon Number Conservation and Suppressed Neutrino Masses From Five Dimensions
• Form Invariance and Symmetry in the Neutrino Mass Matrix
• Constraints on Natural MNS Parameters from |U_e3|
• Future Precision Neutrino Oscillation Experiments and Theoretical Implications
• The Problem of Large Leptonic Mixing
• Implications of partially degenerate neutrinos at a high scale in the light of KamLAND and WMAP
• A Phenomenological Study on Lepton Mass Matrix Textures
• Physics of Massive Neutrinos
• Neutrino oscillations and new physics
• Fermion masses and mixings in gauge theories
• How a Non-hierarchical Neutrino Mass Matrix Can Arise
• Inverted neutrino mass hierarchies from U(1) symmetries
• A minimal axion model for mass matrices with five texture-zeros
• A hidden hierarchy of neutrino masses
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• Minimal seesaw mechanism
• Neutrino mass matrices from localization in M-theory on $G_2$ orbifold
• Hierarchical neutrino masses and mixing in non minimal-SU(5)
• Bimaximal mixing from lopsided neutrinos