Extracting infrared QCD coupling from meson spectrum

Details Extracting infrared QCD coupling from meson spectrum Extracting infrared QCD coupling from meson spectrum

2006-11-07

arxiv.org/abs/hep-ph/0611087v1

AIPConf.Proc.892:340-342,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at 7th International Conference on Quark Confinement and the Hadron Spectrum, Azores - Portugal, 2-7 Sep 2006. To b

Scientific paper

10.1063/1.2714412

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

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