@Article{Courtoy_etal2011, author="Courtoy, A. and Scopetta, S. and Vento, V.", title="Non-perturbative momentum dependence of the coupling constant and hadronic models", journal="European Physical Journal A", year="2011", publisher="Springer", volume="47", number="4", pages="49--7pp", abstract="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.", optnote="ISI:000291659500003", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=657), last updated on Thu, 07 Jul 2011 08:59:27 +0000", issn="1434-6001", doi="10.1140/epja/i2011-11049-8", opturl="http://arxiv.org/abs/1102.1599", opturl="https://doi.org/10.1140/epja/i2011-11049-8", archivePrefix="arXiv", eprint="1102.1599", language="English" }