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

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

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Courtoy, Aurore; Scopetta, Sergio; Vento Torres, Vicente
Aquest document és un/a article, creat/da en: 2011
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.

    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
http://dx.doi.org/10.1140/epja/i2011-11049-8
distribuït sota llicència Creative Commons de Reconeixement-NoComercial 3.0 No adaptada

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