A_4 model for the quark mass matrices

Abstract

We propose a model for the quark masses and mixings based on an A_4 family symmetry. Three scalar SU(2) doublets form a triplet of A_4. The three left-handed-quark SU(2) doublets are also united in a triplet of A_4. The right-handed quarks are singlets of A_4. The A_4-symmetric scalar potential leads to a vacuum in which two of the three scalar SU(2) doublets have expectation values with equal moduli. Our model makes an excellent fit of the observed |V_ub/V_cb|. The symmetry CP is respected in the charged gauge interactions of the quarks.

11 pages, 2 figures, clarifications and reference added, v3: version to appear in EPJC

References in corpus (10)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Underlying A_4 Symmetry for the Neutrino Mass Matrix and the Quark Mixing Matrix
• Softly Broken A_4 Symmetry for Nearly Degenerate Neutrino Masses
• Symmetry realization of texture zeros
• A_4 flavour symmetry breaking scheme for understanding quark and neutrino mixing angles
• Quark Mass Matrices in the A_4 Model
• Quark Masses and Mixing with A4 Family Symmetry
• Classification of Conformality Models Based on Nonabelian Orbifolds

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• Discrete symmetries in the three-Higgs-doublet model
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• Constraining Flavour Symmetries At The EW Scale I: The A4 Higgs Potential
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• Lepton Flavor Model from Delta(54) Symmetry
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• Deviation from tri-bimaximal mixing and flavor symmetry breaking in a seesaw type A4 model
• A Model for Tri-bimaximal Mixing from a Completely Broken $A_4$
• Lepton Masses in a Minimal Model with Triplet Higgs Bosons and $S_3$ Flavor Symmetry
• Stability and symmetry breaking in the general three-Higgs-doublet model
• Delta(54) Flavor Model for Leptons and Sleptons
• An S4 model for quarks and leptons with maximal atmospheric angle
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• Model-Independent Analysis of Tri-bimaximal Mixing -- a Softly-Broken Hidden or an Accidental Symmetry?
• Yet another lesson on the stability conditions in multi-Higgs potentials
• Common origin of reactor and sterile neutrino mixing
• Quark mixing in the discrete dark matter model
• The flavor problem and discrete symmetries
• Lepton mass and mixing in a Neutrino Mass Model based on $S_4$ flavor symmetry
• Bounded-from-below conditions for $A_4$-symmetric 3HDM
• Flavon-induced connections between lepton flavour mixing and charged lepton flavour violation processes
• A viable $A_4$ 3HDM theory of quark mass matrices
• The role of flavon cross couplings in leptonic flavour mixing
• S4 Flavor Model of Quarks and Leptons
• Quark Flavor Mixings from Hierarchical Mass Matrices
• Symmetryless Dark Matter
• Flavor origin of R-parity
• Diagonal reflection symmetries, four-zero texture, and trimaximal mixing with predicted ${\theta }_{13}$ in an $A_4$ symmeric model
• Testing Flavor Symmetries by B-Factory
• An A4 model for neutrinos
• Models for neutrino mass with discrete symmetries
• Non-SUSY Lepton Flavor Model with 3HDM
• Scalar and gauge sectors in the 3-Higgs Doublet Model under the S3-symmetry
• Seesaw neutrino masses from an $A_4$ model with two equal vacuum expectation values