Quarkonia and the pole mass

A. H. Hoang; M. C. Smith; T. Stelzer; S. Willenbrock

Quarkonia and the pole mass

A. H. Hoang, M. C. Smith, T. Stelzer, S. Willenbrock

Research output: Contribution to journal › Article › peer-review

Abstract

The pole mass of a heavy quark is ambiguous by an amount of order Λ_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 Λ_QCD, in contrast with the pole mass.

Original language	English (US)
Pages (from-to)	1-3
Number of pages	3
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	59
Issue number	11
State	Published - Jun 1 1999

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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AU - Willenbrock, S.

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N2 - 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.

AB - 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.

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Quarkonia and the pole mass

Abstract

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