Testing color evaporation in photon-photon production of J/psi at CERN LEP II

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dc.contributor.authorEboli, OJP
dc.contributor.authorGregores, E. M.
dc.contributor.authorMizukoshi, J. K.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:07:27Z
dc.date.available2014-05-20T14:07:27Z
dc.date.issued2003-11-01
dc.description.abstractThe DELPHI Collaboration has recently reported the measurement of J/psi production in photon-photon collisions at CERN LEP II. These newly available data provide additional proof of the importance of colored c (c) over bar pairs for the production of charmonium, because these data can be explained only by considering resolved photon processes. We show here that the inclusion of color octet contributions to J/psi production in the framework of the color evaporation model is able to reproduce these data. In particular, the transverse-momentum distribution of the J/psi mesons is well described by this model.en
dc.description.affiliationUniv São Paulo, Inst Fis, BR-01498 São Paulo, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405 São Paulo, Brazil
dc.format.extent5
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.68.094009
dc.identifier.citationPhysical Review D. College Pk: American Physical Soc, v. 68, n. 9, 5 p., 2003.
dc.identifier.doi10.1103/PhysRevD.68.094009
dc.identifier.fileWOS000186971900028.pdf
dc.identifier.issn0556-2821
dc.identifier.urihttp://hdl.handle.net/11449/23681
dc.identifier.wosWOS:000186971900028
dc.language.isoeng
dc.publisherAmerican Physical Soc
dc.relation.ispartofPhysical Review D
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleTesting color evaporation in photon-photon production of J/psi at CERN LEP IIen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmerican Physical Soc
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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São Paulo - IFT - Instituto de Física Teórica