%0 Journal Article
%T Non-perturbative momentum dependence of the coupling constant and hadronic models
%A Courtoy, A.
%A Scopetta, S.
%A Vento, V.
%J European Physical Journal A
%D 2011
%V 47
%N 4
%I Springer
%@ 1434-6001
%G English
%F Courtoy_etal2011
%O ISI:000291659500003
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=657), last updated on Thu, 07 Jul 2011 08:59:27 +0000
%X Models of hadron structure are associated with a hadronic scale which allows by perturbative evolution to calculate observables in the deep inelastic region. The resolution of Dyson-Schwinger equations leads to the freezing of the QCD running coupling (effective charge) in the infrared, which is best understood as a dynamical generation of a gluon mass function, giving rise to a momentum dependence which is free from infrared divergences. We use this new development to understand why perturbative treatments are working reasonably well despite the smallness of the hadronic scale.
%R 10.1140/epja/i2011-11049-8
%U http://arxiv.org/abs/1102.1599
%U https://doi.org/10.1140/epja/i2011-11049-8
%P 49-7pp