论文标题
smeft中的风味对称性
Flavour symmetries in the SMEFT
论文作者
论文摘要
我们分析了$ u（3）^5 $和$ u（2）^5 $风味对称性法案，对标准模型有效场理论法案，提供了一个组织原理，以对涉及费米昂领域的大量尺寸六个操作员进行分类。提出了这类操作员的详细计数，以不同的顺序以这两个对称性的破坏术语进行了不同的顺序。还介绍了有关这两种参考案例可能偏差的简要讨论，以及该分类方案在LHC上对高$ P_T $分析的有用性的简单示例。
We analyse how $U(3)^5$ and $U(2)^5$ flavour symmetries act on the Standard Model Effective Field Theory, providing an organising principle to classify the large number of dimension-six operators involving fermion fields. A detailed counting of such operators, at different order in the breaking terms of both these symmetries, is presented. A brief discussion about possible deviations from these two reference cases, and a simple example of the usefulness of this classification scheme for high-$p_T$ analyses at the LHC, are also presented.
