TY - JOUR
T1 - Perturbative QCD potential, renormalon cancellation, and phenomenological potentials
AU - Recksiegel, S.
AU - Sumino, T.
PY - 2002
Y1 - 2002
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevD.65.054018
DO - 10.1103/PhysRevD.65.054018
M3 - Article
AN - SCOPUS:0036496321
VL - 65
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 0556-2821
IS - 5
M1 - 054018
ER -