Universality of Strength of Yukawa Couplings, Quark Singlets and Strength of CP Violation

Abstract

We analyse the strength of CP violation in an extension of the standard model with an extra $Q=-1/3$ vector-like singlet quark, in the framework of the hypothesis of universality of strength of Yukawa couplings connecting standard quarks. We show that the correct pattern of quark masses and mixing can be obtained, including the observed strength of CP violation.

9 pages, no figures

References in corpus (5)

• FCNC Effects in a Minimal Theory of Fermion Masses
• New Physics and Evidence for a Complex CKM
• Gauged Flavor Group with Left-Right Symmetry
• The size of chi = arg (-Vts Vtb* Vcs* Vcb) and physics beyond the Standard Model
• Universality of strength for Yukawa couplings with extra down-type quark singlets

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• A novel Randall-Sundrum model with $S_3$ flavor symmetry
• Viable textures for the fermion sector
• Invariants, Alignment and the Pattern of Fermion Masses and Mixing
• Probing extra Yukawa couplings by precision measurements of Higgs properties