Categorization of two-loop Feynman diagrams in the 𝒪α2 correction to *
| Autor: | Zhao Li, Quan-feng Wu, Yefan Wang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Discrete mathematics Nuclear and High Energy Physics 010308 nuclear & particles physics Electroweak interaction Sigma Order (ring theory) Astronomy and Astrophysics 01 natural sciences Loop (topology) symbols.namesake 0103 physical sciences Higgs boson symbols Feynman diagram Production (computer science) 010306 general physics Instrumentation Production rate |
| Zdroj: | Chinese Physics C. 45:053102 |
| ISSN: | 2058-6132 1674-1137 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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