矢量流三圈匹配系数重费米子修正的全自动计算
Completely automated computation of the heavy-fermion corrections to the three-loop matching coefficient of the vector current
摘要：
本文计算了量子色动力学（QCD）和非相对论QCD（NRQCD）之间的矢流匹配系数对包含一个闭合重费米子圈的三圈阶的修正。这一结果构成了底夸克和顶夸克系统在阈值的基石。重点放在我们完全自动化的方法的计算，包括生成的费曼图，识别的拓扑结构，减少主积分和自动数值计算后者。
英文摘要：
We evaluate the corrections to the matching coefficient of the vector current between Quantum Chromodynamics (QCD) and Non-Relativistic QCD (NRQCD) to three-loop order containing a closed heavy-fermion loop. The result constitutes a building block both for the bottom- and top-quark system at threshold. Strong emphasis is put on our completely automated approach of the calculation including the generation of the Feynman diagrams, the identification of the topologies, the reduction to master integrals and the automated numerical computation of the latter.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
