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arXiv 2104.05804hep-ph
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μ子和重夸克衰变率的三圈修正

Three-loop corrections to the muon and heavy quark decay rates

Michał Czakon, Andrzej Czarnecki, Matthew Dowling

摘要:

最近,Fael、Schönwald和Steinhauser已经确定了μ子衰变率的$O(α^3)$修正和重夸克衰变的$O(α_s^3)$修正。这是二十多年来这些重要量的首次微扰改进。我们揭示并解释了这些新的校正的对称模式,并确认其评估的技术上最困难的部分。

英文摘要:

Recently, $O(α^3)$ corrections to the muon decay rate and $O(α_s^3)$ to heavy quark decays have been determined by Fael, Schönwald, and Steinhauser. This is the first such perturbative improvement of these important quantities in more than two decades. We reveal and explain a symmetry pattern in these new corrections, and confirm the most technically difficult parts of their evaluation.

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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