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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 | |||
| This document is a artículoDate2011 | |||
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Este documento está disponible también en : http://hdl.handle.net/10550/43754 |
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| 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. | |||
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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 |
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| http://dx.doi.org/10.1140/epja/i2011-11049-8 |
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