Quarkonia and the Pole Mass

Details Quarkonia and the Pole Mass Quarkonia and the Pole Mass

1998-04-03

arxiv.org/abs/hep-ph/9804227v2

Phys.Rev. D59 (1999) 114014

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, LateX. Minor revisions for publication

Scientific paper

10.1103/PhysRevD.59.114014

The pole mass of a heavy quark is ambiguous by an amount of order $\Lambda_{QCD}$. We show that the heavy-quark potential, $V(r)$, is similarly ambiguous, but that the total static energy, $2M_{pole}+V(r)$, is unambiguous when expressed in terms of a short-distance mass. This implies that the extraction of a short-distance mass from the quarkonium spectrum is free of an ambiguity of order $\Lambda_{QCD}$, in contrast with the pole mass.

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