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arXiv · hep-ph/9809450

The running QCD coupling in the pre-asymptotic region

G. Burgio·F. Di Renzo·C. Parrinello·C. Pittori
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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.

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G. Burgio, F. Di Renzo, C. Parrinello, C. Pittori. 1998-09-18. The running QCD coupling in the pre-asymptotic region. https://doi.org/10.1016/s0920-5632(99)00203-0

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