The running QCD coupling in the pre-asymptotic region
High Energy Physics - Phenomenology
2009-10-31 v1
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.
Cite
@article{arxiv.hep-ph/9809450,
title = {The running QCD coupling in the pre-asymptotic region},
author = {G. Burgio and F. Di Renzo and C. Parrinello and C. Pittori},
journal= {arXiv preprint arXiv:hep-ph/9809450},
year = {2009}
}
Comments
Contrib to QCD98, 4 pages, Latex, 2 PostScript figures, requires espcrc2.sty and epsf.sty