$S_3$ discrete group as a source of the quark mass and mixing pattern in $331$ models

Abstract

We propose a model based on the $SU(3{)}_C\otimes SU(3{)}_L\otimes U(1{)}_X$ gauge symmetry with an extra $S_3\otimes Z_2\otimes Z_4\otimes Z_{12}$ discrete group, which successfully accounts for the SM quark mass and mixing pattern. The observed hierarchy of the SM quark masses and quark mixing matrix elements arises from the $Z_4$ and $Z_{12}$ symmetries, which are broken at very high scale by the $SU(3{)}_L$ scalar singlets ($\sigma$,$\zeta$) and $\tau$, charged under these symmetries, respectively. The Cabbibo mixing arises from the down type quark sector whereas the up quark sector generates the remaining quark mixing angles. The obtained magnitudes of the CKM matrix elements, the CP violating phase and the Jarlskog invariant are in agreement with the experimental data.

Comments: 12 pages. Version published in European Physical Journal C