The process is the dominant process for the Higgs boson production at the future Higgs factory. In order to match the analysis on the Higgs properties with highly precise experiment data, it will be crucial to include the theoretical prediction to the full next-to-next-to-leading order electroweak effect in the production rate . In this inspiring work, we categorize the two-loop Feynman diagrams of the correction to into 6 categories according to relevant topological structures. Although 25377 diagrams contribute to the correction in total, the number of the most challenging diagrams with seven denominators is 2250, which contain only 312 non-planar diagrams with 155 independent types. This categorization could be a valuable reference for the complete calculation in future.

该过程是未来希格斯工厂生产希格斯玻色子的主要过程。为了将 Higgs 特性的分析与高精度的实验数据相匹配，将理论预测包含在生产率中对完整的 next-to-next-to-lead order 电弱效应中是至关重要的。在这项鼓舞人心的工作中，我们根据相关的拓扑结构将校正的双环费曼图分为 6 类。尽管 25377 个图表有助于总共修正，最具挑战性的7个分母图数量为2250，其中仅包含155个独立类型的312个非平面图。这种分类可以为以后的完整计算提供有价值的参考。