Nelson-Barr 机制的跷跷板极限
高能物理 - 唯象学
2024-12-25 v2
摘要
我们研究了强 CP 问题的解决方案与观察到的费米子质量等级结构的解释如何内在地相关联。具体而言,我们探讨了 Nelson-Barr 机制并确定了其“跷跷板极限”,其中轻夸克质量被大的 CP 破坏项所抑制。通过添加三个(两个)与标准模型的下型(上型)夸克 sector 混合的矢量型夸克,我们演示了如何同时实现强 sector 中 CP 破坏的缺失和观察到的夸克质量等级结构。
引用
@article{arxiv.2404.16945,
title = {Seesaw Limit of the Nelson-Barr Mechanism},
author = {A. L. Cherchiglia and A. G. Dias and J. Leite and C. C. Nishi},
journal= {arXiv preprint arXiv:2404.16945},
year = {2024}
}
备注
As accepted for publication in PLB. This paper is dedicated to the memory of our friend and collaborator, Prof. Alex Gomes Dias (1977-2024). He will be fondly remembered for his remarkable knowledge, tireless dedication to science and generous heart