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dc.contributor.authorFagundes, Daniel Almeidapt_BR
dc.contributor.authorMachado, Magno Valério Trindadept_BR
dc.date.accessioned2023-07-19T03:40:23Zpt_BR
dc.date.issued2023pt_BR
dc.identifier.issn0556-2821pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/262352pt_BR
dc.description.abstractWe present an analysis of the most precise set of Hadron-Electron Ring Accelerator (HERA) data within the color dipole formalism, by using an analytical gluon density, based on the double-logarithm approximation of the Dokshitzer–Gribov–Lipatov–Altarelli–Parisi (DGLAP) equations in the asymptotic limit of the scaling variable, σ ¼ log ð1=xÞlog ðlog ðQ2=Q2 0ÞÞ → ∞. Fits to the data, including charm and bottom quarks, are performed and demonstrate the efficiency of the model in describing the reduced cross section, σr, in the wide range Q2∶ ð1.5; 500Þ GeV2 for two dipole models including parton saturation effects. We also give predictions to Fcc¯ 2 , Fbb¯ 2 and FL, all describing the data reasonably well in the range Q2∶ ð2.5; 120Þ GeV2. Total cross sections of exclusive photoproduction of J=ψ and ρ are also calculated and successfully compared to HERA data and recent measurements at LHCb.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysical Review. D, Particles and fields. Woodbury. Vol. 107, no. 1 (Jan. 2023), 014004, 8 p.pt_BR
dc.rightsOpen Accessen
dc.subjectAcelerador de partículaspt_BR
dc.subjectDipolos de corpt_BR
dc.subjectGluonspt_BR
dc.titleAsymptotic gluon density within the color dipole picture in light of HERA high-precision datapt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001164420pt_BR
dc.type.originEstrangeiropt_BR


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