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QCD Power Corrections from a Simple Model for the Running Coupling

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arxiv hep-ph/9805484 v1 pith:HJO5G34A submitted 1998-05-27 hep-ph

B.R. Webber This is my paper · ORCID
classification hep-ph
keywords couplingrunningcorrectionspowersimplebehaviourcombinedearlier
verification ladder T0 review T1 audit T2 compute T3 formal
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A simple parametrization of the QCD running coupling at low scales is introduced and used to illustrate various schemes for the estimation of non-perturbative power corrections. The `infrared matching' scheme proposed earlier gives satisfactory results when combined with next-to-leading (or higher) order perturbative predictions. Estimates based on renormalons are shown to be inconsistent with universal behaviour of the running coupling.

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  1. New results on small-x resummation for splitting functions

    hep-ph 2026-03 conditional novelty 8.0 of 10

    A closed-form all-order expression for the qg anomalous dimension, plus new all-order results for the LL gluon anomalous dimension and the finite qg/gg Green functions, derived and implemented in HELL 4.0.

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