The running QCD coupling in the pre-asymptotic region

Details The running QCD coupling in the pre-asymptotic region The running QCD coupling in the pre-asymptotic region

1998-09-18

arxiv.org/abs/hep-ph/9809450v1

Nucl.Phys.Proc.Suppl. 74 (1999) 388-391

Physics

High Energy Physics

High Energy Physics - Phenomenology

Contrib to QCD98, 4 pages, Latex, 2 PostScript figures, requires espcrc2.sty and epsf.sty

Scientific paper

10.1016/S0920-5632(99)00203-0

We study deviations from the perturbative asymptotic behaviour in the running
QCD coupling by analysing non-perturbative measurements of alpha_s (p) at low
momenta as obtained from the lattice three-gluon vertex. Our exploratory study
provides some evidence for power corrections to the perturbative running
proportional to 1/p^2.

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