Leipzig 2002 – scientific programme
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T: Teilchenphysik
T 203: QCD II
T 203.1: Talk
Monday, March 18, 2002, 16:15–16:30, HS 10
The Nf=0 heavy quark potential as test of perturbation theory — •Silvia Necco and Rainer Sommer — DESY Zeuthen Platanenallee, 6 D 15738 ZEUTHEN
The Nf=0 potential of a static quark-anti-quark pair in the range 0.05 fm < r <0.8 fm is evaluated through lattice simulations; the continuum quantities are evaluated by extrapolation of the data at finite lattice spacing. The results are then compared with the perturbation theory predictions obtained from the solution of the renormalization group equation for the running coupling. The renormalization scheme must be choosen carefully, in particular for the evaluation of the force and the potential the qq scheme is most suitable. No evidence for large non-perturbative effects at short distances is seen.