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

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorEboli, OJP
dc.creatorGregores, E. M.
dc.creatorMizukoshi, J. K.
dc.date2014-05-20T14:07:27Z
dc.date2014-05-20T14:07:27Z
dc.date2003-11-01
dc.date.accessioned2017-04-05T21:41:35Z
dc.date.available2017-04-05T21:41:35Z
dc.identifierPhysical Review D. College Pk: American Physical Soc, v. 68, n. 9, 5 p., 2003.
dc.identifier0556-2821
dc.identifierhttp://hdl.handle.net/11449/23681
dc.identifier10.1103/PhysRevD.68.094009
dc.identifierWOS:000186971900028
dc.identifierWOS000186971900028.pdf
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.68.094009
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/868760
dc.descriptionThe 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.
dc.languageeng
dc.publisherAmerican Physical Soc
dc.relationPhysical Review D
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleTesting color evaporation in photon-photon production of J/psi at CERN LEP II
dc.typeOtro


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