The running QCD coupling in the pre-asymptotic region
arXiv:hep-ph/9809450 · doi:10.1016/S0920-5632(99)00203-0
Abstract
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.
Contrib to QCD98, 4 pages, Latex, 2 PostScript figures, requires espcrc2.sty and epsf.sty