论文标题
Muon和Electron $ G-2 $以及费米昂质量等级的起源
Muon and Electron $g-2$ and the Origin of Fermion Mass Hierarchy
论文作者
论文摘要
我们提出了一个模型，该模型对带电的Lepton Mass层次结构提供了自然的解释，并研究了对电子和Muon $ G-2 $的贡献。在模型中，我们将Lepton-Flavor依赖性$ U（1）_F $对称和三个带有$ U（1）_F $费用的Higgs Doublets和三个额外的Higgs Doublets引入，以意识到每一代带电的Leptons夫妇夫妇都会向三个附加的Higgs Doublets之一。 $ u（1）_f $对称性被$+1 $指控轻轻破坏，而软折断的小度自然会产生higgs vevs的层次结构，然后占用了带电的Lepton Mass Mass层次结构。由于电子和MUON夫妇都与不同的标量粒子相连，因此每个标量均对电子和MUON $ G-2 $有所不同。我们调查了希格斯行业参数的空间，并发现有一组参数可以解释muon $ g-2 $差异。另一方面，我们找不到可以在2 $σ$内解释$ G-2 $差异的参数集。在这里，$ u（1）_f $对称性抑制了充电的Lepton风味。
We present a model that gives a natural explanation to the charged lepton mass hierarchy and study the contributions to the electron and the muon $g-2$. In the model, we introduce lepton-flavor-dependent $U(1)_F$ symmetry and three additional Higgs doublets with $U(1)_F$ charges, to realize that each generation of charged leptons couples to one of the three additional Higgs doublets. The $U(1)_F$ symmetry is softly broken by $+1$ charges, and the smallness of the soft breaking naturally gives rise to the hierarchy of the Higgs VEVs, which then accounts for the charged lepton mass hierarchy. Since electron and muon couple to different scalar particles, each scalar contributes to the electron and the muon $g-2$ differently. We survey the space of parameters of the Higgs sector and find that there are sets of parameters that explain the muon $g-2$ discrepancy. On the other hand, we cannot find the parameter sets that can explain $g-2$ discrepancy within 2$σ$. Here the $U(1)_F$ symmetry suppresses charged lepton flavor violation.
