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dc.contributor.authorGoncalves, Victor Paulo Barrospt_BR
dc.contributor.authorMachado, Magno Valério Trindadept_BR
dc.date.accessioned2018-08-22T02:31:59Zpt_BR
dc.date.issued2003pt_BR
dc.identifier.issn1434-6044pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/181215pt_BR
dc.description.abstractThe contribution of the QCD pomeron to the process AA → AAJ/Ψ J/Ψ is discussed. We focus on the photon–photon collision, with the quasi-real photon coming from theWeizs¨acker–Williams spectrum of the nuclei. We calculate the cross section for this process considering the solution of the LLA BFKL equation at zero momentum transfer using a small t approximation for the differential cross section of the subprocess. Furthermore, the impact of non-leading corrections to the BFKL equation is also analyzed. In both cases the cross section is found to increase with the energy, predicting considerable values for the LHC energies. Moreover, we compare our results with the Born two-gluon approximation, which is energy independent at the photon level. Our results indicate that the experimental analyses of this process can be useful to discriminate the QCD dynamics at high energies.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofEuropean physical journal. C, Particles and fields. Berlin. Vol. 28, no. 1 (May 2003), p. 71-77pt_BR
dc.rightsOpen Accessen
dc.subjectInteracoes foton-fotonpt_BR
dc.subjectPomeronspt_BR
dc.subjectMésons psipt_BR
dc.subjectCromodinâmica quânticapt_BR
dc.titleThe QCD pomeron in ultraperipheral heavy ion collisions : I. The double J/Ψ productionpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000392374pt_BR
dc.type.originEstrangeiropt_BR


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