CP violation in the models of fermion localization on a domain wall (brane)

TL;DR

This paper explores mechanisms of fermion localization on domain walls and introduces extensions that generate CP violation, potentially explaining the CKM matrix within brane-world models.

Contribution

It proposes an extension of scalar-fermion interactions to produce fermion masses and CP violation, linking brane models with Standard Model flavor physics.

Findings

Extension can generate CKM matrix elements

Scalar doublets provide additional CP violation

Model offers a new approach to fermion mass generation

Abstract

A brief survey of fermion localization mechanism on a domain wall ("thick brane") generated by a topologically nontrivial vacuum configuration of scalar fields is given. The extension of scalar fields interaction with fermions which supplies fermions with an axial mass is proposed. For several flavors and generations of fermions this extension can entail the Cabibbo-Kobayashi-Maskawa matrix of the Standard Model. As well the model with two scalar doublets which provide a supplementary CP violation mechanism is considered.