论文标题
双环SMEFT异常尺寸的结构通过壳方法
Structure of two-loop SMEFT anomalous dimensions via on-shell methods
论文作者
论文摘要
我们描述了用于计算有效的现场理论的上下文中，用于计算一环异常维度的内壳方法。我们还概述了计算一环幅度的方法，这些方法用作两层异常维度计算的输入，我们解释了如何在两个循环的异常尺寸矩阵中导致合理术语和明智的重新构化方案选择的结构如何导致其他消失项。我们描述了对标准模型有效场理论（SMEFT）的双层含义。作为该分析的副产品，我们验证了由Alonso，Jenkins，Manohar和Trott计算出的各种单环SMEFT异常尺寸。
We describe on-shell methods for computing one- and two-loop anomalous dimensions in the context of effective field theories containing higher-dimension operators. We also summarize methods for computing one-loop amplitudes, which are used as inputs to the computation of two-loop anomalous dimensions, and we explain how the structure of rational terms and judicious renormalization scheme choices can lead to additional vanishing terms in the anomalous dimension matrix at two loops. We describe the two-loop implications for the Standard Model Effective Field Theory (SMEFT). As a by-product of this analysis we verify a variety of one-loop SMEFT anomalous dimensions computed by Alonso, Jenkins, Manohar and Trott.
