Extracting infrared QCD coupling from meson spectrum
| dc.creator | Baldicchi, M. | |
| dc.creator | Prosperi, G. M. | |
| dc.creator | Simolo, C. | |
| dc.date | 2006-11-07 | |
| dc.date.accessioned | 2026-07-07T10:25:56Z | |
| dc.date.available | 2026-07-07T10:25:56Z | |
| dc.description | In the framework of the Bethe-Salpeter formalism used in previous papers to evaluate the quarkonium spectrum, here we reverse the point of view to extract an ``experimental'' running coupling alpha_s(Q^2) in the infrared (IR) region from the data. The values so obtained agree within the errors with the Shirkov-Solovtsov analytic coupling for 200 MeV <Q< 1.2 GeV, thus giving a very satisfactory unifying description of high and low energy phenomena. Below 1 GeV however alpha_s(Q^2) seems to vanish as Q to 0. The paper is based on a work in progress in collaboration with D.V.Shirkov. | |
| dc.description | Talk given at 7th International Conference on Quark Confinement and the Hadron Spectrum, Azores - Portugal, 2-7 Sep 2006. To be published in AIP Conf.Proc | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0611087 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0611087 | |
| dc.identifier | AIPConf.Proc.892:340-342,2007 | |
| dc.identifier | doi:10.1063/1.2714412 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/176710 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Extracting infrared QCD coupling from meson spectrum | |
| dc.type | text |