论文标题
伪量表夸克和嗜睡的两环硕士积分
Two-loop master integrals for pseudo-scalar quarkonium and leptonium production and decay
论文作者
论文摘要
我们计算与伪量夸克夸克和鳞霉素的产生和衰减相关的两环校正相关的主积分。我们介绍分析和高精度数值结果。分析表达式以多种聚类（MPL），椭圆形多重聚类（EMPL）和Eisenstein系列的迭代积分给出。作为我们结果的应用，我们首次获得了两个环的两环振幅的分析表达，以在两个循环下对两个光子进行分析。
We compute the master integrals relevant for the two-loop corrections to pseudo-scalar quarkonium and leptonium production and decay. We present both analytic and high-precision numerical results. The analytic expressions are given in terms of multiple polylogarithms (MPLs), elliptic multiple polylogarithms (eMPLs) and iterated integrals of Eisenstein series. As an application of our results, we obtain for the first time an analytic expression for the two-loop amplitude for para-positronium decay to two photons at two loops.
