arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0807.0365hep-ph
收藏

三圈静态夸克势的计算

Evaluating the three-loop static quark potential

Alexander V. Smirnov, Vladimir A. Smirnov, Matthias Steinhauser

摘要:

本文是对重夸克和反夸克的静态QCD势的三圈修正的评价情况报告。费曼积分的家庭中出现的评价进行了说明。为了减少任何积分的家庭,以掌握积分,我们解决积分的部分关系的算法称为消防。为了评估相应的主积分,我们应用梅林-巴恩斯技术。给出了第一个结果:n_l^3和n_l^2的系数,其中n_1是轻夸克的个数。

英文摘要:

This is a status report of the evaluation of the three-loop corrections to the static QCD potential of a heavy quark and an antiquark. The families of Feynman integrals that appear in the evaluation are described. To reduce any integral of the families to master integrals we solve integration-by-parts relations by the algorithm called FIRE. To evaluate the corresponding master integrals we apply the Mellin-Barnes technique. First results are presented: the coefficients of n_l^3 and n_l^2, where n_l is the number of light quarks.

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。

↑