(D)over-barN interaction from meson-exchange and quark-gluon dynamics

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dc.contributor.authorHaidenbauer, J.
dc.contributor.authorKrein, G.
dc.contributor.authorMeissner, U.-G.
dc.contributor.authorSibirtsev, A.
dc.contributor.institutionForschungszentrum Julich
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Bonn
dc.date.accessioned2014-05-20T14:05:29Z
dc.date.available2014-05-20T14:05:29Z
dc.date.issued2007-07-01
dc.description.abstractWe investigate the (D) over barN interaction at low energies using a meson exchange model supplemented with a short-distance contribution from one-gluon exchange. The model is developed in close analogy to the meson-exchange KN interaction of the Julich group utilizing SU(4) symmetry constraints. The main ingredients of the interaction are provided by vector meson (rho, omega) exchange and higher-order box diagrams involving (D) over bar *N , (D) over bar Delta, and (D) over bar*Delta intermediate states. The short-range part is assumed to receive additional contributions from genuine quark-gluon processes. The predicted cross-sections for (D) over barN for excess energies up to 150MeV are of the same order of magnitude as those for KN but with average values of around 20mb, roughly a factor two larger than for the latter system. It is found that the omega-exchange plays a very important role. Its interference pattern with the rho-exchange, which is basically fixed by the assumed SU(4) symmetry, clearly determines the qualitative features of the (D) over barN interaction - very similiar to what happens also for the KN system.en
dc.description.affiliationForschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.description.affiliationUniv Bonn, Helmholtz Inst Strahlen & Kernphys Theor, D-53115 Bonn, Germany
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.format.extent107-117
dc.identifierhttp://dx.doi.org/10.1140/epja/i2007-10417-3
dc.identifier.citationEuropean Physical Journal A. New York: Springer, v. 33, n. 1, p. 107-117, 2007.
dc.identifier.doi10.1140/epja/i2007-10417-3
dc.identifier.issn1434-6001
dc.identifier.urihttp://hdl.handle.net/11449/22985
dc.identifier.wosWOS:000248629500016
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofEuropean Physical Journal A
dc.relation.ispartofjcr2.799
dc.relation.ispartofsjr1,116
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.title(D)over-barN interaction from meson-exchange and quark-gluon dynamicsen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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