TY  - JOUR
AU  - Courtoy, A.
AU  - Scopetta, S.
AU  - Vento, V.
PY  - 2011
DA  - 2011//
TI  - Non-perturbative momentum dependence of the coupling constant and hadronic models
T2  - Eur. Phys. J. A
JO  - European Physical Journal A
SP  - 49
EP  - 7pp
VL  - 47
IS  - 4
PB  - Springer
AB  - 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.
SN  - 1434-6001
UR  - http://arxiv.org/abs/1102.1599
UR  - https://doi.org/10.1140/epja/i2011-11049-8
DO  - 10.1140/epja/i2011-11049-8
LA  - English
N1  - ISI:000291659500003
ID  - Courtoy_etal2011
ER  -