Freezing of the QCD coupling constant and solutions of Schwinger-Dyson equations

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dc.contributor.authorAguilar, A. C. [UNESP]
dc.contributor.authorMihara, A. [UNESP]
dc.contributor.authorNatale, A. A. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T19:55:33Z
dc.date.available2022-04-28T19:55:33Z
dc.date.issued2002-01-01
dc.description.abstractWe compare phenomenological values of the frozen QCD running coupling constant (as) with two classes of infrared finite solutions obtained through nonperturbative Schwinger-Dyson equations. We use these same solutions with frozen coupling constants as well as their respective nonperturbative gluon propagators to compute the QCD prediction for the asymptotic pion form factor. Agreement between theory and experiment on αs(0) and F π(Q2) is found only for one of the Schwinger-Dyson equation solutions. © 2002 The American Physical Society.en
dc.description.affiliationInstitut de Fisica Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900, Sao Paulo, SP
dc.description.affiliationUnespInstitut de Fisica Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900, Sao Paulo, SP
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.65.054011
dc.identifier.citationPhysical Review D, v. 65, n. 5, 2002.
dc.identifier.doi10.1103/PhysRevD.65.054011
dc.identifier.issn0556-2821
dc.identifier.scopus2-s2.0-0036496992
dc.identifier.urihttp://hdl.handle.net/11449/224264
dc.language.isoeng
dc.relation.ispartofPhysical Review D
dc.sourceScopus
dc.titleFreezing of the QCD coupling constant and solutions of Schwinger-Dyson equationsen
dc.typeArtigo

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