论文标题
$ hb \ bar {b} $顶点在四个循环和cot中的硬匹配系数中用于各种电流
The $Hb\bar{b}$ vertex at four loops and hard matching coefficients in SCET for various currents
论文作者
论文摘要
我们将四环校正计算到无质量QCD内的Higgs底顶点，并为所有颜色结构提供分析结果。重新归一化的形式的红外线与预测的四环模式一致。此外，我们将结果用于Higgs底，光子Quark和Higgs-Gluon形式的形式，以在软共线有效理论中提供硬匹配系数，最高四循环精度。
We compute the four-loop corrections to the Higgs-bottom vertex within massless QCD and present analytic results for all color structures. The infrared poles of the renormalized form factor agree with the predicted four-loop pattern. Furthermore, we use the results for the Higgs-bottom, photon-quark, and Higgs-gluon form factors to provide hard matching coefficients in soft-collinear effective theory up to four-loop accuracy.
