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arXiv 2301.05972hep-phhep-th
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QCD中四圈有质量尖点反常维数的渐近计算

Four-loop massive cusp anomalous dimension in QCD: a calculation from asymptotics

Nikolaos Kidonakis

摘要:

我提出了一个一般的方法来确定在QCD的大规模尖异常尺寸,以非常高的准确度,利用其渐近行为在小和大夸克速度。我表明,该方法在两个和三个循环的确切结果已经知道非常好。然后,我提出了一个计算的大规模尖点异常尺寸使用其渐近在四个循环,我提供了一个详细的研究结果的不同值的口味的数量和单独的颜色结构。该方法可以进一步扩展并应用于更高数量的循环。

英文摘要:

I present a general method for determining the massive cusp anomalous dimension in QCD to a very high degree of accuracy using its asymptotic behavior at small and large quark velocities. I show that the method works exceedingly well at two and three loops where exact results are already known. I then present a calculation of the massive cusp anomalous dimension using its asymptotics at four loops, and I provide a detailed study of the results for different values of the number of flavors and for separate color structures. The method can be further extended and applied to higher numbers of loops.

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。

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