H+喷注产生在维度正则化参数高阶下的双圈螺旋度振幅
高能物理 - 唯象学
2023-12-07 v3
摘要
鉴于即将到来的 LHC 高亮度阶段，最具现象学相关性的过程的三次次领头阶（NLO）计算变得必要。本工作中，我们以无限顶夸克质量的有效理论，计算两个贡献过程 、 的单圈与双圈螺旋度振幅在维度正则化参数高阶下的结果，为 H喷注产生朝此目标迈出第一步。我们将振幅按关联于螺旋度振幅的标量形状因子及一组新的张量结构基分解。形状因子受约化至新型规范主积分基的费曼积分贡献。我们推导并求解了这些积分在双变量多重多对数（MPLs）下直至超越权六的微分方程。
引用
@article{arxiv.2301.10849,
title = {Two-loop helicity amplitudes for $H+$jet production to higher orders in the dimensional regulator},
author = {Thomas Gehrmann and Petr Jakubčík and Cesare Carlo Mella and Nikolaos Syrrakos and Lorenzo Tancredi},
journal= {arXiv preprint arXiv:2301.10849},
year = {2023}
}
备注
32 pages; 3 figures, 3 tables; ancillary files with results in Mathematica format; v2 Fixed typos in Section 5 and unified the integration measure in Appendix B and the ancillary files, version accepted for publication in JHEP; v3 Fixed typos in formulas 5.5, 5.9, and A.2-A.4; in anc/, the colour layer "F2" was called "D2" by mistake; results also available at https://xjetamps.hepforge.org/