论文标题
在两个Higgs Doublet模型中，MUON异常磁矩具有矢量样瘦素
Muon Anomalous Magnetic Moment in Two Higgs Doublet Models with Vector-Like Leptons
论文作者
论文摘要
我们表明，在两个速率的双重双集模型中包含单一生成的矢量样瘦素可以显着扩大与MUON异常磁矩以及其他理论和实验性约束相一致的允许参数空间。虽然以前$（g -2）_μ$只能在type-X场景中解决，需要通过轻伪尺度higgs玻色子和大型$ \tanβ$来解决，但通过两循环的barr zee图贡献了矢量般的lept子的贡献$ \ cal {o} $（1 tev）在满足可观察到的精度和风味的严格约束时。对于II型场景，获得了类似的结果，但是参数空间更受风味可观察的限制。
We show that inclusion of a single generation of vector-like leptons in the Two-Higgs Doublet Models significantly enlarges the allowed parameter space consistent with the muon anomalous magnetic moment, as well as with other theoretical and experimental constraints. While previously $(g -2)_μ$ could only be resolved in Type-X scenario by requiring a light pseudoscalar Higgs boson and large $\tan β$, contributions of vector-like leptons via two-loop Barr Zee diagrams broaden the allowed parameter space, allowing $\tan β$ as low as 10 and pseudoscalar masses as large as $\cal{O}$(1 TeV) while fulfilling the stringent constraints from precision and flavor observable. Similar results are obtained for Type-II scenarios, but there the parameter space is more restricted by flavor observables.
