论文标题
在隐藏的Abelian量规模型中，可能是Yukawa耦合的杂环电子和小$ \ $ \ $ \ trianglea_μ$
Possibly heteroclite electron Yukawa coupling and small $\triangle a_μ$ in a hidden Abelian gauge model for neutrino masses
论文作者
论文摘要
我们尝试同时解释中微子振荡数据，并在隐藏的量规$ u（1）_x $模型中观察到的$（g-2）_ {e，μ} $，其中所有标准模型（SM）字段均为$ u（1）_x $ singlets。该型号的最小版本需要四个外来的标量和两对矢量费米子，并且在$ u（1）_x $下收取所有费用。我们仔细考虑了违反电荷的实验限制，而无需假设任何风味对称性并探索可行的模型参数空间。该模型可以适应正常和倒数质量排序的中微子振荡数据，同时通过采用使用Cesium或Rubidium Atoms确定的良好结构常数来解释$ \ triangle a_e $的中心值。但是，主要受到$ {\ cal b}（τ\rightArrowμγ）$的当前实验结合的约束，该模型预测$ \ trianglea_μ<5.5（8.0）\ times 10^{ - 10} $对于正常（倒置）中性序列。此外，虽然信川耦合接近SM，但我们发现电子Yukawa耦合的幅度可能比SM预测大的数量级。这种异常的Yukawa可以在将来探测FCC-EE对撞机，并在测试风味物理学中起着至关重要的作用。
We attempt to simultaneously explain the neutrino oscillation data and the observed $(g-2)_{e,μ}$ in a hidden gauge $U(1)_X$ model where all the Standard Model(SM) fields are $U(1)_X$ singlets. The minimal version of this model calls for four exotic scalars and two pairs of vector fermions, and all are charged under $U(1)_X$. We carefully consider the experimental limits on charge lepton flavor violation without assuming any flavor symmetry and explore the viable model parameter space. The model can accommodate the neutrino oscillation data for both the normal and the inverted mass ordering while explaining the central value of $\triangle a_e$ by adopting the fine structure constant determined by using either Cesium or Rubidium atoms. However, mainly constrained by the current experimental bound on ${\cal B}(τ\rightarrow μγ)$, this model predicts $\triangle a_μ<5.5(8.0)\times 10^{-10}$ for the normal(inverted) neutrino ordering. Moreover, while the muon Yukawa coupling is close to the SM one, we find the magnitude of the electron Yukawa coupling could be one order of magnitude larger than the SM prediction. This abnormal electron Yukawa could be probed in the future FCC-ee collider and plays an essential role in testing flavor physics.
