An A4 flavor model for quarks and leptons in warped geometry

Abstract

We propose a spontaneous A4 flavor symmetry breaking scheme implemented in a warped extra dimensional setup to explain the observed pattern of quark and lepton masses and mixings. The main advantages of this choice are the explanation of fermion mass hierarchies by wave function overlaps, the emergence of tribimaximal neutrino mixing and zero quark mixing at the leading order and the absence of tree-level gauge mediated flavor violations. Quark mixing is induced by the presence of bulk flavons, which allow for cross-brane interactions and a cross-talk between the quark and neutrino sectors, realizing the spontaneous symmetry breaking pattern A4 --> nothing first proposed in [X.G.\,He, Y.Y.\,Keum, R.R.\,Volkas, JHEP{0604}, 039 (2006)]. We show that the observed quark mixing pattern can be explained in a rather economical way, including the CP violating phase, with leading order cross-interactions, while the observed difference between the smallest CKM entries V_{ub} and V_{td} must arise from higher order corrections. We briefly discuss bounds on the Kaluza-Klein scale implied by flavor changing neutral current processes in our model and show that the residual little CP problem is milder than in flavor anarchic models.

34 pages, 2 figures; version published in JHEP

References in corpus (18)

• A custodial symmetry for Zbb
• Flavor Physics in the Randall-Sundrum Model: I. Theoretical Setup and Electroweak Precision Tests
• Collider Signals of Top Quark Flavor Violation from a Warped Extra Dimension
• Flavor from Minimal Flavor Violation & a Viable Randall-Sundrum Model
• Higgs Mediated FCNC's in Warped Extra Dimensions
• Probing the Randall-Sundrum geometric origin of flavor with lepton flavor violation
• Natural Neutrino Masses and Mixings from Warped Geometry
• Composite Higgs-Mediated FCNC
• A GIM Mechanism from Extra Dimensions
• Minimal Flavor Protection: A New Flavor Paradigm in Warped Models
• Flavour physics of the RS model with KK masses reachable at LHC
• The Custodial Randall-Sundrum Model: From Precision Tests to Higgs Physics
• Solving the flavour problem with hierarchical fermion wave functions
• Model of Geometric Neutrino Mixing
• Minimal Flavor Violation in the Lepton Sector of the Randall-Sundrum Model
• Next to Minimal Flavor Violation
• Top quark spin correlations in the Randall-Sundrum model at the CERN Large Hadron Collider
• What we (would like to) know about the neutrino mass

Cited by in corpus (14)

• Neutrino Mass Sum-rules in Flavor Symmetry Models
• Adjoint SUSY $SU(5)$ Grand Unified Model with $S_4$ Flavor Symmetry
• The symmetry approach to quark and lepton masses and mixing
• Doubly charged heavy leptons at LHC via contact interactions
• Light Neutrinos from a Mini-Seesaw Mechanism in Warped Space
• A Survey of Neutrino Flavor Models and the Neutrinoless Double Beta Decay Funnel
• Renormalisation Group Corrections to Neutrino Mixing Sum Rules
• Large lepton mixing angles from a 4+1-dimensional SU(5) x A(4) domain-wall braneworld model
• CP violation and FCNC in a warped A4 flavor model
• SU(6) Gauge-Higgs Grand Unification: Minimal Viable Models and Flavor
• A minimal axion model for mass matrices with five texture-zeros
• Fermion masses and mixings and charged lepton flavor violation in a 3-3-1 model with inverse seesaw
• Neutrino Oscillations in the Three Flavor Paradigm
• Top-down and bottom-up excursions beyond the Standard Model: The example of left-right symmetries in supersymmetry