I review the structure of the leading infrared renormalon divergence of the relation between the pole mass and the \(\overline{\mathrm{MS}}\) mass of a heavy quark, with applications to the top, bottom and charm quark. That the pole quark mass definition must be abandoned in precision computations is a well-known consequence of the rapidly diverging series. The definitions and physics motivations of several leading renormalon-free, short-distance mass definitions suitable for processes involving nearly on-shell heavy quarks are discussed.

中文翻译：

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极质量重整子及其后果

我回顾 了重夸克的极质量和\(\overline{\mathrm{MS}}\)质量之间关系的主要红外重整子散度的结构，并应用于顶夸克、底夸克和粲夸克。在精确计算中必须放弃极夸克质量定义是快速发散级数的众所周知的结果。讨论了适用于涉及近壳重夸克过程的几种主要的无重整子、短距离质量定义的定义和物理动机。