Modelling tri-bimaximal neutrino mixing

Abstract

We model tri-bimaximal lepton mixing from first principles in a way that avoids the problem of the vacuum alignment characteristic of such models. This is achieved by using a softly broken A4 symmetry realized with an isotriplet fermion, also triplet under A4. No scalar A4-triplet is introduced. This represents one possible realization of general schemes characterized by the minimal set of either three or five physical parameters. In the three parameter versions mee vanishes, while in the five parameter schemes the absolute scale of neutrino mass, although not predicted, is related to the two Majorana phases. The model realization we discuss is potentially testable at the LHC through the peculiar leptonic decay patterns of the fermionic and scalar triplets.

some changing, reference added

References in corpus (7)

• Massive neutrinos and cosmology
• Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
• Three-flavour neutrino oscillation update
• CP Violation and Neutrino Oscillations
• Type-III see-saw at LHC
• $\mu \to e\gamma$ and $\tau \to l\gamma$ decays in the fermion triplet seesaw model
• Flavor Symmetry Breaking and Vacuum Alignment on Orbifolds

Cited by in corpus (28)

• A4-based tri-bimaximal mixing within inverse and linear seesaw schemes
• S4 Flavor Symmetry of Quarks and Leptons in SU(5) GUT
• An A4 model for lepton masses and mixings
• Quark-Lepton Mass Relation in a Realistic A4 Extension of the Standard Model
• Neutrino Masses and Heavy Triplet Leptons at the LHC: Testability of Type III Seesaw
• Tri-Bimaximal lepton mixing with A4 semidirect product Z2 x Z2 x Z2
• Inverse tri-bimaximal type-III seesaw and lepton flavor violation
• A See-Saw $S_4$ model for fermion masses and mixings
• Deviation from tri-bimaximal mixing and flavor symmetry breaking in a seesaw type A4 model
• Predicting CP violation in Deviation from Tri-bimaximal mixing of Neutrinos
• The symmetry approach to quark and lepton masses and mixing
• An S4 model for quarks and leptons with maximal atmospheric angle
• Lepton Flavour Violation and Flavour Symmetries
• Super Flavorsymmetry with Multiple Higgs Doublets
• Lepton FCNC in Type III Seesaw Model
• Tri-bimaximal Mixing and Cabibbo Angle in S4 Flavor Model with SUSY
• Semidirect Product Groups, Vacuum Alignment and Tribimaximal Neutrino Mixing
• Model of flavor with quaternion symmetry
• Towards Minimal S4 Lepton Flavor Model
• Like-sign dimuon asymmetry of B0 meson and LFV in SU(5) SUSY GUT with S4 flavor symmetry
• S4 Flavor Model of Quarks and Leptons
• Recent Neutrino Data and Type III Seesaw with Discrete Symmetry
• Leptogenesis and LHC Physics with Type III See-Saw
• Symmetryless Dark Matter
• Testing the minimal $S_4$ model of neutrinos with the Dirac and Majorana phases
• Progress in the understanding of neutrino properties
• Non-SUSY Lepton Flavor Model with 3HDM
• Revisiting Flavor Model and Leptogenesis