Are there short distance non-perturbative contributions to the QCD static potential?

Details Are there short distance non-perturbative contributions to the QCD static potential? Are there short distance non-perturbative contributions to the QCD static potential?

1999-05-18

arxiv.org/abs/hep-ph/9905387v3

Phys.Lett. B460 (1999) 170

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages Latex, elsart style with 3 epsf figures, some figures and formulas have changed due to a sign error in the original m

Scientific paper

10.1016/S0370-2693(99)00757-1

We find that perturbation theory fails to describe the short range static potential as obtained from quenched lattice simulations, at least for source separations r > 1/(6 GeV). The difference between the non-perturbatively determined potential and perturbation theory at short distance is well parameterised by a linear term with a slope of approximately 1.2 GeV^2 that is significantly bigger than the string tension, sigma = 0.21 GeV^2

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