Interplay of dynamical and explicit chiral symmetry breaking effects on a quark

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dc.contributor.authorSerna, Fernando E. [UNESP]
dc.contributor.authorChen, Chen [UNESP]
dc.contributor.authorEl-Bennich, Bruno [UNESP]
dc.contributor.institutionDCTA
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Cruzeiro Sul
dc.date.accessioned2019-10-04T12:38:13Z
dc.date.available2019-10-04T12:38:13Z
dc.date.issued2019-05-20
dc.description.abstractThe relative contributions of explicit and dynamical chiral symmetry breaking in QCD models of the quark-gap equation are studied in dependence of frequently employed Ansatze for the dressed interaction and quark-gluon vertex. The explicit symmetry breaking contributions are defined by a constituent-quark sigma term whereas the combined effects of explicit and dynamical symmetry breaking are described by a Euclidean constituent-mass solution. We extend this study of the gap equation to a quark-gluon vertex beyond the Abelian approximation complemented with numerical gluon- and ghost-dressing functions from lattice QCD. We find that the ratio of the sigma term over the Euclidean mass is largely independent of nonperturbative interaction and vertex models for current-quark masses, m(u,d)(mu) <= m(mu) <= m(b)(mu), and equal contributions of explicit and dynamical chiral symmetry breaking occur at m(mu) approximate to 400 MeV. For massive solutions of the gap equation with lattice propagators this value decreases to about 200 MeV.en
dc.description.affiliationDCTA, Inst Tecnol Aeronaut, BR-12228900 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz 271,Bloco 2, BR-01140070 Sao Paulo, SP, Brazil
dc.description.affiliationUniv Cruzeiro Sul, Lab Fis Teor & Computac, Rua Galvao Bueno 868, BR-01506000 Sao Paulo, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz 271,Bloco 2, BR-01140070 Sao Paulo, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdCNPq: 168240/2017-3
dc.description.sponsorshipIdCNPq: 307485/2017-0
dc.description.sponsorshipIdCAPES: 1811288
dc.description.sponsorshipIdCAPES: 086/2013
dc.description.sponsorshipIdFAPESP: 2016/03154-7
dc.description.sponsorshipIdFAPESP: 2015/21550-4
dc.format.extent9
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.99.094027
dc.identifier.citationPhysical Review D. College Pk: Amer Physical Soc, v. 99, n. 9, 9 p., 2019.
dc.identifier.doi10.1103/PhysRevD.99.094027
dc.identifier.issn2470-0010
dc.identifier.urihttp://hdl.handle.net/11449/185742
dc.identifier.wosWOS:000469019900002
dc.language.isoeng
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review D
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleInterplay of dynamical and explicit chiral symmetry breaking effects on a quarken
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmer Physical Soc
unesp.author.orcid0000-0003-3619-0670[2]

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