Eboli, OJPGregores, E. M.Halzen, F.2014-05-202014-05-202003-03-01Physical Review D. College Pk: American Physical Soc, v. 67, n. 5, 5 p., 2003.0556-2821http://hdl.handle.net/11449/23125The H1 Collaboration recently reported a new analysis of data on the inelastic photoproduction of J/psi mesons at DESY's HERA ep collider. We show that these new experimental results are well described by the color evaporation model for quarkonium production. Moreover, these new data require the introduction of resolved photon contributions in order to accommodate the results in the kinematic region where the fractional energy carried by the J/psi is small, demonstrating that colored perturbative c (c) over bar states contribute to the production of a color singlet.5engArtigo10.1103/PhysRevD.67.054002WOS:000182019700014Acesso restritoWOS000182019700014.pdf