Three-zero texture of quark-mass matrices as a solution to the strong CP problem
High Energy Physics - Phenomenology
2024-08-23 v1 High Energy Physics - Theory
Abstract
The strong charge-parity (CP) problem has been a long-standing problem in particle physics since 1976, illustrating the small CP-violation phase in quantum chromodynamics (QCD). The axion, based on the Peccei-Quinn mechanism, is the most popular solution to the problem. In this paper, we propose an alternative solution based on the three-zero texture of quark mass matrices without additional heavy quark states, which has been shown to fit data well. We show that the required three-zero texture is naturally constructed in a six-dimensional spacetime with a orbifold compactification.
Cite
@article{arxiv.2408.12146,
title = {Three-zero texture of quark-mass matrices as a solution to the strong CP problem},
author = {Qiuyue Liang and Risshin Okabe and Tsutomu T. Yanagida},
journal= {arXiv preprint arXiv:2408.12146},
year = {2024}
}