论文标题
辐射产生的效费质量层次结构，来自风味非普遍仪表对称性
Radiatively generated fermion mass hierarchy from flavour non-universal gauge symmetries
论文作者
论文摘要
提出了一个基于一类Abelian仪表对称性的框架，其中仅在树层出现了第三代Quarks和Lepton的质量。第一和第二个家庭的费米斯通过循环中新的仪表玻色子引起的辐射校正来获得质量。结果表明，可以通过这种机制实施这种机制的Abelian对称性类别本质上是非普及的。对众所周知的Leptonic $L_μ-L_τ$和$ L_E-L_μ$ symmetries进行全铁的概括，我们构建了一个基于两个$ u（1）$的明确的可重新分解模型，该模型被证明可以重现标准模型的观察到的Fermion质量谱。第一代和第二代费米质量被抑制了循环，而这两代之间的层次结构是由于扩展量规对称性的两个矢量玻色子之间的差异而导致的。讨论了美味的新物理学的几个现象学方面，并得出了矢量玻色子质量的下限。
A framework based on a class of abelian gauge symmetries is proposed in which the masses of only the third generation quarks and leptons arise at the tree level. The fermions of the first and second families receive their masses through radiative corrections induced by the new gauge bosons in the loops. It is shown that the class of abelian symmetries which can viably implement this mechanism are flavour non-universal in nature. Taking the all-fermion generalization of the well-known leptonic $L_μ-L_τ$ and $L_e - L_μ$ symmetries, we construct an explicit renormalizable model based on two $U(1)$ which is shown to reproduce the observed fermion mass spectrum of the Standard Model. The first and second generation fermion masses are loop suppressed while the hierarchy between these two generations results from a gap between the masses of two vector bosons of the extended gauge symmetries. Several phenomenological aspects of the flavourful new physics are discussed and lower limits on the masses of the vector bosons are derived.
