Abstract
We examine the total energy Etot(r) = 2mpole+ V QCD(r) of the b̄ system within perturbative QCD up to script O sign(αS3). We extend a previous analysis by incorporating effects of the nonzero charm-quark mass in loops. We find that, once the renormalon cancellation is performed, Etot(r) agrees well with typical phenomenological potentials for heavy quarkonia at distances 0.5 GeV-1≲r≲3 GeV-1. We also examine the perturbative predictions for Etot(r) of other heavy quarkonium systems. Whenever stable predictions are obtained, they agree with each other up to an r-independent constant.
Original language | English |
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Article number | 054018 |
Journal | Physical Review D |
Volume | 65 |
Issue number | 5 |
DOIs | |
State | Published - 2002 |
Externally published | Yes |