Excited Hadrons and the Analytical Structure of Bound-State Interaction Kernels

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dc.contributor.authorEl-Bennich, Bruno
dc.contributor.authorKrein, Gastao [UNESP]
dc.contributor.authorRojas, Eduardo
dc.contributor.authorSerna, Fernando E. [UNESP]
dc.contributor.institutionUniv Cruzeiro Sul
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Antioquia
dc.date.accessioned2018-11-26T17:06:33Z
dc.date.available2018-11-26T17:06:33Z
dc.date.issued2016-10-01
dc.description.abstractWe highlight Hermiticity issues in bound-state equations whose kernels are subject to a highly asymmetric mass and momentum distribution and whose eigenvalue spectrum becomes complex for radially excited states. We trace back the presence of imaginary parts in the eigenvalues and wave functions to truncation artifacts and suggest how they can be eliminated in the case of charmed mesons. The solutions of the gap equation in the complex plane, which play a crucial role in the analytic structure of the Bethe-Salpeter kernel, are discussed for several interaction models and qualitatively and quantitatively compared to analytic continuations by means of complex-conjugate pole models fitted to real solutions.en
dc.description.affiliationUniv Cruzeiro Sul, Lab Fis Teor & Computac, Rua Galvao Bueno 868, BR-01506000 Sao Paulo, 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 Antioquia, Inst Fis, Calle 70,52-21, Medellin, Colombia
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz 271 Bloco 2, BR-01140070 Sao Paulo, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipPatrimonio Autonomo Fondo Nacional de Financiamiento para la Ciencia, la Tecnologia y la Innovacion, Francisco Jose de Caldas
dc.description.sponsorshipSostenibilidad-UDEA (Colombia)
dc.description.sponsorshipIdFAPESP: 2013/01907-0
dc.description.sponsorshipIdFAPESP: 2013/16088-4
dc.description.sponsorshipIdCNPq: 305894/2009-9
dc.description.sponsorshipIdCNPq: 458371/2014-9
dc.description.sponsorshipIdCNPq: 305852/2014-0
dc.format.extent955-963
dc.identifierhttp://dx.doi.org/10.1007/s00601-016-1133-x
dc.identifier.citationFew-body Systems. Wien: Springer Wien, v. 57, n. 10, p. 955-963, 2016.
dc.identifier.doi10.1007/s00601-016-1133-x
dc.identifier.fileWOS000384882800012.pdf
dc.identifier.issn0177-7963
dc.identifier.urihttp://hdl.handle.net/11449/162022
dc.identifier.wosWOS:000384882800012
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofFew-body Systems
dc.relation.ispartofsjr0,460
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleExcited Hadrons and the Analytical Structure of Bound-State Interaction Kernelsen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer

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