The breaking of flavor democracy in the quark sector

Abstract

The democracy of quark flavors is a well-motivated flavor symmetry, but it must be properly broken in order to explain the observed quark mass spectrum and flavor mixing pattern. We reconstruct the texture of flavor democracy breaking and evaluate its strength in a novel way, by assuming a parallelism between the Q=+2/3 and Q=-1/3 quark sectors and using a nontrivial parametrization of the flavor mixing matrix. Some phenomenological implications of such democratic quark mass matrices, including their variations in the hierarchy basis and their evolution from the electroweak scale to a superhigh-energy scale, are also discussed.

arXiv comment14 pages. References added. Accepted for publication in Chinese Phys. C

References in corpus (20)

• Mass and Flavor Mixing Schemes of Quarks and Leptons
• Updated Values of Running Quark and Lepton Masses
• Flavor Symmetries and the Description of Flavor Mixing
• Impacts of the Higgs mass on vacuum stability, running fermion masses and two-body Higgs decays
• Four-Zero Texture of Hermitian Quark Mass Matrices and Current Experimental Tests
• On the Parametrization of Flavor Mixing in the Standard Model
• The Light Quark Sector, CP Violation, and the Unitarity Triangle
• The breaking of the flavour permutational symmetry: Mass textures and the CKM matrix
• The breaking of the flavour permutational symmetry: Mass textures and the CKM matrix
• Complete Parameter Space of Quark Mass Matrices with Four Texture Zeros
• Broken S_3 Flavor Symmetry of Leptons and Quarks: Mass Spectra and Flavor Mixing Patterns
• The Breaking of Subnuclear Democracy as the Origin of Flavour Mixing
• The CKM Parameters
• Implications of the Quark Mass Hierarchy on Flavor Mixings
• Predicting Vckm with Universal Strength of Yukawa Couplings
• On the four-zero texture of quark mass matrices and its stability
• Heavy top quark from Fritzsch mass matrices
• Right Unitarity Triangles, Stable CP-violating Phases and Approximate Quark-Lepton Complementarity
• Radiative Corrections to the CKM Unitarity Triangles
• A democratic suggestion

Cited by in corpus (9)

• Flavor structures of charged fermions and massive neutrinos
• A new solution of the fermionic mass hierarchy of the standard model
• Large Leptonic Dirac CP Phase from Broken Democracy with Random Perturbations
• Exploring the predictability of symmetric texture zeros in quark mass matrices
• The Minimal Flavor Structure from Decomposition of the Fermion Mass Matrix
• The common origin of the family mass hierarchy and CP violation from flavour-dependent vacuum for quarks and leptons
• Generating the Cabibbo Angle in Flavored Gauge Mediation Models with Discrete Non-Abelian Symmetries
• A Unified Yukawa Interaction for the Standard Model of Quarks and Leptons
• Broken Democracy with Intermediate ${\mathbb{S}}_2\times {\mathbb{S}}_2$ Residual Symmetry and Random Perturbations