论文标题
Cabibbo异常与Electroweak Precision测试：探索标准模型的扩展
Cabibbo anomaly versus electroweak precision tests: An exploration of extensions of the Standard Model
论文作者
论文摘要
来自不同来源的$ v_ {us} $的确定（称为cabibbo异常）之间存在新出现的张力，新的$ r（v_ {us}）$ observable明确证明了这一点。我们从标准模型有效现场理论的角度探讨了这一可观察到的，并表明$ r（v_ {us}）$与现有的electroweak precision observables（ewpo）之间存在差异。我们探索标准模型的所有可能的单个粒子扩展，这些模型可以生成Cabibbo异常效应，并显示它们如何无法调和当前数据。我们进一步研究了EWPO在ILC或FCC-EE实验中的未来，并讨论了特定EW可观察物的变化张力的影响。
There is a newly emerging tension between determinations of $V_{us}$ from different sources (known as the Cabibbo anomaly), which is clearly demonstrated by the new $R(V_{us})$ observable. We explore this observable from the perspective of the Standard Model Effective Field Theory and show there is a discrepancy between $R(V_{us})$ and existing electroweak precision observables (EWPO) in a simple single operator dominated scenario. We explore all possible single particle extensions of the Standard Model that can generate the Cabibbo anomaly effect and show how they cannot reconcile the current data. We further examine the future of EWPO at the ILC or FCC-ee experiments and discuss the effect on the tension of a change in specific EW observables.
