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Phys. Rev. D 59, 114014 (1999) [3 pages]

Quarkonia and the pole mass

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A. H. Hoang
Department of Physics, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0319

M. C. Smith, T. Stelzer, and S. Willenbrock
Department of Physics, University of Illinois, 1110 West Green Street, Urbana, Illinois 61801

Received 15 September 1998; published 4 May 1999

The pole mass of a heavy quark is ambiguous by an amount of order ΛQCD. We show that the heavy-quark potential, V(r), is similarly ambiguous, but that the total static energy, 2Mpole+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 ΛQCD, in contrast with the pole mass.


©1999 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevD.59.114014
DOI: 10.1103/PhysRevD.59.114014
PACS: 14.40.Gx, 12.38.Cy, 12.39.Jh

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