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.
|Original language||English (US)|
|Number of pages||3|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|State||Published - Jun 1 1999|
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)