Infrared enhanced analytic coupling and chiral symmetry breaking in QCD

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dc.creatorAguilar, A. C.
dc.creatorNesterenko, A. V.
dc.creatorPapavassiliou, J.
dc.date2005-04-21
dc.date2005-07-14
dc.date.accessioned2026-07-07T03:54:39Z
dc.date.available2026-07-07T03:54:39Z
dc.descriptionWe study the impact on chiral symmetry breaking of a recently developed model for the QCD analytic invariant charge. This charge contains no adjustable parameters, other than the QCD mass scale $Λ$, and embodies asymptotic freedom and infrared enhancement into a single expression. Its incorporation into the standard form of the quark gap equation gives rise to solutions for the dynamically generated mass that display a singular confining behaviour at the origin. Using the Pagels-Stokar method we relate the obtained solutions to the pion decay constant $f_π$, and estimate the scale parameter $Λ$, in the presence of four active quarks, to be about 880 MeV.
dc.description14 pages, 3 figures; to appear in J. Phys. G
dc.identifierhttps://arxiv.org/abs/hep-ph/0504195
dc.identifierhttp://arxiv.org/abs/hep-ph/0504195
dc.identifierJ.Phys. G31 (2005) 997
dc.identifierdoi:10.1088/0954-3899/31/9/002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/44329
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleInfrared enhanced analytic coupling and chiral symmetry breaking in QCD
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