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.

14 pages. References added. Accepted for publication in Chinese Phys. C

References in corpus (4)

• Updated Values of Running Quark and Lepton Masses
• On the four-zero texture of quark mass matrices and its stability
• Right Unitarity Triangles, Stable CP-violating Phases and Approximate Quark-Lepton Complementarity
• A democratic suggestion

Cited by in corpus (4)

• Exploring the predictability of symmetric texture zeros in quark mass matrices
• Broken Democracy with Intermediate ${\mathbb{S}}_2\times {\mathbb{S}}_2$ Residual Symmetry and Random Perturbations
• A Unified Yukawa Interaction for the Standard Model of Quarks and Leptons
• The Minimal Flavor Structure from Decomposition of the Fermion Mass Matrix