Parametrization of the QCD coupling in Hard and Regge processes
| dc.creator | Ermolaev, B. I. | |
| dc.creator | Troyan, S. I. | |
| dc.date | 2008-09-01 | |
| dc.date.accessioned | 2026-07-07T09:59:44Z | |
| dc.date.available | 2026-07-07T09:59:44Z | |
| dc.description | We examine the parametrization of the QCD coupling in the Bethe-Salpeter equations for the hard and Regge processes and determine the argument of alpha_s of the factorized gluon. Our analysis shows that for the hard processes alpha_s = alpha_s(k^2_T/(1- beta)) where k^2_T and beta are the longitudinal and transverse moment of the soft parton. On the other hand, in the Regge processes alpha_s = alpha_s(k^2_T}/beta). We have also shown that the well-known parametrization alpha_s = alpha_s(k^2_T) in the DGLAP equations stands only if the lowest integration limit, mu^2, over k^2_T (the starting point of the Q^2 -evolution) obeys the relation mu >> Lambda_{QCD} exp {(π/2)}, otherwise the coupling should be replaced by the more complicated expression. | |
| dc.description | Talk given at the conference "Hadron Structure and QCD-2008", Gatchina, Russia, June 30-July 4, 2008 | |
| dc.identifier | https://arxiv.org/abs/0809.0219 | |
| dc.identifier | http://arxiv.org/abs/0809.0219 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/168131 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Parametrization of the QCD coupling in Hard and Regge processes | |
| dc.type | text |