The discrete charm of flavour and CP violation

Abstract

We point out that in the Standard Model (SM) there is no explanation why $|V_{23}{|}^2+|V_{13}{|}^2$ is of order $10^{-3}$. A framework is described for explaining this small mixing, involving the introduction of vector-like quarks. A symmetry is introduced so that at a first stage $V_{CKM}=1\mathrm{I}$ and only the third generation of quarks acquires a mass. It is shown that when interactions of vector-like quarks are taken into account a realistic quark mass spectrum is generated together with a correct $V_{CKM}$ matrix.

10 pages, no figures. Prepared for the proceedings of DISCRETE2016: the Fifth Symposium on Prospects in the Physics of Discrete Symmetries, 28 November-3 December 2016, University of Warsaw, Poland, to appear in the Journal of Physics: Conference Series (JPCS)

References in corpus (6)

• Survey of vector-like fermion extensions of the Standard Model and their phenomenological implications
• New Vector-Like Fermions and Flavor Physics
• Resonant leptogenesis and tribimaximal leptonic mixing with A4 symmetry
• Four Zero Neutrino Yukawa Textures in the Minimal Seesaw Framework
• New-physics signals of a model with a vector-singlet up-type quark
• Small violations of unitarity, the phase in Bs mixing and visible t->cZ decays at the LHC

Cited by in corpus (1)

• A universally enhanced light-quarks Yukawa couplings paradigm