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Non-perturbative momentum dependence of the coupling constant and hadronic models

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dc.contributor.author	Courtoy, Aurore
dc.contributor.author	Scopetta, Sergio
dc.contributor.author	Vento Torres, Vicente
dc.date.accessioned	2015-05-13T08:20:43Z
dc.date.available	2015-05-13T08:20:43Z
dc.date.issued	2011
dc.identifier.uri	http://hdl.handle.net/10550/43754
dc.description.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.
dc.language.iso	eng
dc.relation.ispartof	European Physical Journal A, 2011, vol. 47, num. 4, p. 49
dc.source	Courtoy, Aurore Scopetta, Sergio Vento Torres, Vicente 2011 Non-perturbative momentum dependence of the coupling constant and hadronic models European Physical Journal A 47 4 49
dc.subject	Física
dc.title	Non-perturbative momentum dependence of the coupling constant and hadronic models
dc.type	journal article	es_ES
dc.date.updated	2015-05-13T08:20:43Z
dc.identifier.doi	http://dx.doi.org/10.1140/epja/i2011-11049-8
dc.identifier.idgrec	069154
dc.rights.accessRights	open access	es_ES