Lepton flavor at the electroweak scale: A complete A4 model

Abstract

Apparent regularities in fermion masses and mixings are often associated with physics at a high flavor scale, especially in the context of discrete flavor symmetries. One of the main reasons for that is that the correct vacuum alignment requires usually some high scale mechanism to be phenomenologically acceptable. Contrary to this expectation, we present in this paper a renormalizable radiative neutrino mass model with an A4 flavor symmetry in the lepton sector, which is broken at the electroweak scale. For that we use a novel way to achieve the VEV alignment via an extended symmetry in the flavon potential proposed before by two of the authors. We discuss various phenomenological consequences for the lepton sector and show how the remnants of the flavor symmetry suppress large lepton flavor violating processes. The model naturally includes a dark matter candidate, whose phenomenology we outline. Finally, we sketch possible extensions to the quark sector and discuss its implications for the LHC, especially how an enhanced diphoton rate for the resonance at 125 GeV can be explained within this model.

44 pages, 11 figures; lepton flavor section extended, references added, matches version accepted by PRD

References in corpus (91)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• Dimension-Six Terms in the Standard Model Lagrangian
• Observation of electron-antineutrino disappearance at Daya Bay
• Observation of Reactor Electron Antineutrino Disappearance in the RENO Experiment
• Verifiable Radiative Seesaw Mechanism of Neutrino Mass and Dark Matter
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• Indication for the disappearance of reactor electron antineutrinos in the Double Chooz experiment
• The Muon g-2
• Dark Matter Results from 100 Live Days of XENON100 Data
• Improved search for muon-neutrino to electron-neutrino oscillations in MINOS
• Underlying A_4 Symmetry for the Neutrino Mass Matrix and the Quark Mixing Matrix
• Softly Broken A_4 Symmetry for Nearly Degenerate Neutrino Masses
• Tri-Bimaximal Neutrino Mixing, A4 and the Modular Symmetry
• Global analysis of neutrino masses, mixings and phases: entering the era of leptonic CP violation searches
• Tri-Bimaximal Neutrino Mixing from Discrete Symmetry in Extra Dimensions
• Global status of neutrino oscillation parameters after Neutrino-2012
• The oblique parameters in multi-Higgs-doublet models
• LEP Shines Light on Dark Matter
• Finite Modular Groups and Lepton Mixing
• A_4 Symmetry and Neutrinos with Very Different Masses
• Neutrino Mass Anarchy
• Lepton mixing and discrete symmetries
• General formulae for f1 --> f2 gamma
• Tri-bimaximal Neutrino Mixing and Quark Masses from a Discrete Flavour Symmetry
• New limit on the lepton-flavour violating decay mu -> e gamma
• Scalar Multiplet Dark Matter
• Implications of a Modified Higgs to Diphoton Decay Width
• Cold Dark Matter, Radiative Neutrino Mass, mu to e gamma, and Neutrinoless Double Beta Decay
• Diffuse gamma ray constraints on annihilating or decaying Dark Matter after Fermi
• WIMP dark matter, Higgs exchange and DAMA
• A_4 flavour symmetry breaking scheme for understanding quark and neutrino mixing angles
• Residual Symmetries for Neutrino Mixing with a Large theta_13 and Nearly Maximal delta_D
• Search for a light charged Higgs boson in top quark decays in pp collisions at sqrt(s) = 7 TeV
• Search for charged Higgs bosons decaying via H+ -> tau nu in top quark pair events using pp collision data at sqrt(s) = 7 TeV with the ATLAS detector
• Comparing Trimaximal Mixing and Its Variants with Deviations from Tri-bimaximal Mixing
• Simple Non-Abelian Finite Flavor Groups and Fermion Masses
• Z_2 Symmetry Prediction for the Leptonic Dirac CP Phase
• Trimaximal mixing with predicted θ_13 from a new type of constrained sequential dominance
• Minimal Modification To The Tri-bimaximal Neutrino Mixing
• Parametrizing the lepton mixing matrix in terms of deviations from tri-bimaximal mixing
• Breaking Tri-bimaximal Mixing and Large ${\theta }_{13}$
• A model for trimaximal lepton mixing
• Trimaximal neutrino mixing from vacuum alignment in A4 and S4 models
• Statistical Test of Anarchy
• Minimal Modification to Tri-bimaximal Mixing
• Lepton Flavour Violation in Models with A4 Flavour Symmetry
• Nonzero theta(13) for neutrino mixing in the context of A(4) symmetry
• A4-based tri-bimaximal mixing within inverse and linear seesaw schemes
• Twisted Flavors and Tri/bi-Maximal Neutrino Mixing
• Maximal Neutrino Mixing from a Minimal Flavor Symmetry
• Discrete dark matter
• Model-Independent Bound on the Dark Matter Lifetime
• Baryon Destruction by Asymmetric Dark Matter
• Flavor Symmetry for Quarks and Leptons
• A Grand Delta(96) x SU(5) Flavour Model
• The A4 flavor symmetry and neutrino phenomenology
• A common origin of fermion mixing and geometrical CP violation, and its test through Higgs physics at the LHC
• A4 models of tri-bimaximal-reactor mixing
• Simplified Renormalizable $T^{{}^{\prime }}$ Model for Tribimaximal Mixing and Cabibbo Angle
• WMAP Constraints on Decaying Cold Dark Matter
• Neutrino masses and mixing from S4 flavor twisting
• Phenomenology of Dark Matter from A4 Flavor Symmetry
• Lepton Flavour Violation in a Supersymmetric Model with A4 Flavour Symmetry
• Constraining Flavour Symmetries At The EW Scale I: The A4 Higgs Potential
• Scotogenic $A_4$ Neutrino Model for Nonzero ${\theta }_{13}$ and Large ${\delta }_{CP}$
• TFH Mixing Patterns, Large ${\theta }_{13}$ and $\Delta (96)$ Flavor Symmetry
• Observable T_7 Lepton Flavor Symmetry at the Large Hadron Collider
• Exotic Higgs boson decay modes as a harbinger of $S_3$ flavor symmetry
• A4xSU(5) SUSY GUT of Flavour with Trimaximal Neutrino Mixing
• New Simple A_4 Neutrino Model for Nonzero θ_{13} and Large δ_{CP}
• Repressing Anarchy in Neutrino Mass Textures
• The apparent excess in the Higgs to di-photon rate at the LHC: New Physics or QCD uncertainties?
• Neutrino phenomenology and stable dark matter with A4
• Cosmological Constraints on Invisible Decay of Dark Matter
• Constraining Flavour Symmetries At The EW Scale II: The Fermion Processes
• LHC sensitivity to the decay of a Higgs boson to tau mu
• Quark and Lepton Flavor Triality
• Stability of dark matter from the D4xZ2 flavor group
• Spontaneous leptonic CP violation and nonzero ${\theta }_{13}$
• Predictions of Neutrino Mixing Angles in a T'Model
• Inverse tri-bimaximal type-III seesaw and lepton flavor violation
• Natural Vacuum Alignment from Group Theory: The Minimal Case
• Predictive Discrete Dark Matter Model
• Probing Lepton Flavor Triality with Higgs Boson Decay
• Quartification with T' Flavor
• Novel signatures of the Higgs sector from S3 flavor symmetry
• Simple renormalizable flavor symmetry for neutrino oscillations
• Semidirect Product Groups, Vacuum Alignment and Tribimaximal Neutrino Mixing
• Quark mixing in the discrete dark matter model

Cited by in corpus (27)

• Neutrino Mass and Mixing with Discrete Symmetry
• Baryons as relativistic three-quark bound states
• From the trees to the forest: a review of radiative neutrino mass models
• Flavor structures of charged fermions and massive neutrinos
• Unified Models of Neutrinos, Flavour and CP Violation
• Higgs $\to \mu \tau$ in Abelian and Non-Abelian Flavor Symmetry Models
• Lepton masses and mixings in a $A_4$ multi-Higgs model with radiative seesaw mechanism
• Nonzero ${\theta }_{13}$ and Leptogenesis in a Type-I See-saw Model with $A_4$ Symmetry
• Flavour models for TM1 lepton mixing
• $A_4$ symmetry at colliders and in the universe
• Phenomenological Study of Residual Z^s_2 and Zbar^s_2 Symmetries
• Flavor origin of dark matter and its relation with leptonic nonzero ${\theta }_{13}$ and Dirac CP phase $\delta$
• A new A4 model for lepton mixing
• Complementarity of $\mu$TRISTAN and Belle II in searches for charged-lepton flavour violation
• Common origin of ${\theta }_{13}$ and dark matter within the flavor symmetric scoto-seesaw framework
• Lepton-flavour-violating tau decays from triality
• GAP listing of the finite subgroups of U(3) of order smaller than 2000
• Lepton flavor violation by two units
• Leptons and Quarks from a Discrete Flavor Symmetry
• Symmetries of stationary points of the $G$-invariant potential and the framework of the auxiliary group
• Light flavon signals at electron - photon colliders
• Nonzero ${\theta }_{13}$ in $SO(3)\to A_4$ lepton models
• Z and Higgs boson decays with doubly-charged scalars at one-loop: current constraints, future sensitivities, and application to lepton-triality models
• ${\text{TM}}_1$ neutrino mixing with $\sin {\theta }_{13}=\frac{1}{\sqrt{3}}\sin \frac{\pi }{12}$
• $A_4$ realization of left-right symmetric linear seesaw
• $TeV$-Scale Resonant Leptogenesis with New Scaling Ansatz on Neutrino Dirac Mass Matrix from $A_4$ Flavor Symmetry
• $TeV$-Scale Resonant Leptogenesis $A_4$ with a scaling texture