Bound state approach to the QCD coupling at low energy scales

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dc.creatorBaldicchi, M.
dc.creatorNesterenko, A. V.
dc.creatorProsperi, G. M.
dc.creatorShirkov, D. V.
dc.creatorSimolo, C.
dc.date2007-05-02
dc.date2007-11-22
dc.date.accessioned2026-07-07T11:20:27Z
dc.date.available2026-07-07T11:20:27Z
dc.descriptionWe exploit theoretical results on the meson spectrum within the framework of a Bethe-Salpeter (BS) formalism adjusted for QCD, in order to extract an ``experimental'' coupling α_s^{exp}(Q^2) below 1 GeV by comparison with the data. Our results for α_s^{exp}(Q^2) exhibit a good agreement with the infrared safe Analytic Perturbation Theory (APT) coupling from 1 GeV down to 200 MeV. As a main result, we claim that the combined BS-APT theoretical scheme provides us with a rather satisfactory correlated understanding of very high and low energy phenomena.
dc.descriptionRevised version, to appear on Physical Review Letters. 7 pages, 2 figures, Revtex
dc.identifierhttps://arxiv.org/abs/0705.0329
dc.identifierhttp://arxiv.org/abs/0705.0329
dc.identifierPhys.Rev.Lett.99:242001,2007
dc.identifierdoi:10.1103/PhysRevLett.99.242001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193969
dc.subjectHigh Energy Physics - Phenomenology
dc.titleBound state approach to the QCD coupling at low energy scales
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