More on ambiguities in the pole mass

Details More on ambiguities in the pole mass More on ambiguities in the pole mass

1994-08-26

arxiv.org/abs/hep-ph/9408380v1

Phys.Lett. B344 (1995) 341-347

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 10 pages, Figures appended as uu-encoded file, UM-TH-94-31

Scientific paper

10.1016/0370-2693(94)01505-7

The relation between the pole quark mass and the $\overline{MS}$-renormalized mass is governed by an infrared renormalon singularity, which leads to an ambiguity of order $\Lambda_{QCD}$ in the definition of the pole mass. We use the renormalization group and heavy quark effective theory to determine the exact nature of this singularity up to an overall normalization. In the abelian gauge theory, the normalization is computed partially to next-to-leading order in the flavour expansion.

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