Flavored axions and the flavor problem
High Energy Physics - Phenomenology
2022-11-30 v3
Abstract
A Peccei-Quinn~(PQ) symmetry is proposed in order to generate in the Standard Model~(SM) quark sector a realistic mass matrix ansatz with five texture-zeros. Limiting our analysis to Hermitian mass matrices, we show that this requires a minimum of 4 Higgs doublets. This model allows assigning values close to 1 for several Yukawa couplings, giving insight into the origin of the mass scales in the SM. Since the PQ charges are non-universal, the model features Flavor-Changing Neutral Currents~(FCNC) at the tree level. From the analytical expressions for the FCNC we report the allowed region in the parameter space obtained from the measurements of branching ratios of semileptonic meson decays.
Cite
@article{arxiv.2007.05653,
title = {Flavored axions and the flavor problem},
author = {Yithsbey Giraldo and R. Martinez and Eduardo Rojas and Juan C. Salazar},
journal= {arXiv preprint arXiv:2007.05653},
year = {2022}
}
Comments
20 pages, 2 figures