2 HDM中的$(g-2)_μ$和稍远的--更新视图
$(g-2)_μ$ in the 2HDM and slightly beyond -- an updated view
摘要：
最近对μ子$g - 2$异常的测量继续无视标准模型的解释，但可以容纳在两个希格斯双重模型的框架内。如果我们进一步把额外的费米子内容以类似轻子的矢量的形式包括进来，那么解释反常现象的允许参数范围就进一步扩大了，而微扰性和与$B$ -衰变约束的冲突等棘手问题也就避免了。我们将展示如何μ子磁矩异常可以在这些模型中，假设矢量轻子不与μ子混合。我们更新以前的分析，包括所有的理论和实验的限制，包括搜索额外的标量。结果表明，包括矢量类费米子允许轻子特定和μ子特定的模型，以执行更好地拟合μ子的$g - 2$。这些拟合确实要求希格斯粒子和类矢量轻子之间的汤川耦合很大，导致微扰性和么正性的潜在问题，因此类矢量轻子与μ子混合的模型可能是首选。
英文摘要：
The recent measurement of the muon $g - 2$ anomaly continues to defy a Standard Model explanation, but can be accommodated within the framework of two Higgs doublet models. If one further includes extra fermion content in the form of a generation of vector like leptons, the allowed parameter range that explains the anomaly is even further extended, and thorny issues of perturbativity and clashes with $B$-decay constraints avoided. We will show how the muon magnetic moment anomaly can be fit within these models, under the assumption that the vector-like leptons do not mix with the muon. We update previous analyses and include all theoretical and experimental constraints, including searches for extra scalars. It is shown that the inclusion of vector-like fermions allows the lepton-specific and muon-specific models to perform much better in fitting the muon's $g - 2$. These fits do require the Yukawa coupling between the Higgs and the vector-like leptons to be large, causing potential problems with perturbativity and unitarity, and thus models in which the vector-like leptons mix with the muon may be preferred.
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