Pole mass renormalon and its ramifications
Physik Department T31, Technische Universität München, James-Franck-Straße 1, 85748, Garching, Germany
Accepted: 3 August 2021
Published online: 26 August 2021
I review the structure of the leading infrared renormalon divergence of the relation between the pole mass and the 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.
© The Author(s) 2021
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