Color evaporation and elastic [ípsilon] photoproduction at DESY HERA
dc.contributor.author | Gay Ducati, Maria Beatriz | pt_BR |
dc.contributor.author | Goncalves, Victor Paulo Barros | pt_BR |
dc.contributor.author | Mariotto, Cristiano Brenner | pt_BR |
dc.date.accessioned | 2014-10-01T02:10:41Z | pt_BR |
dc.date.issued | 2002 | pt_BR |
dc.identifier.issn | 0556-2821 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/104011 | pt_BR |
dc.description.abstract | The diffractive photoproduction of vector mesons is usually described by considering the two-gluon (Pomeron) exchange, the nondiagonal parton distributions, and the contribution of the real part to the cross section. In this Brief Report we analyze the diffractive photoproduction of the Y at DESY HERA using an alternative model, the color evaporation model (CEM), where the cross section is simply determined by the boson-gluon cross section and an assumption for the production of the colorless state. We verify that, as in the J/Ψ case, the HERA data for this process can be well described by the CEM. Moreover, we propose the analysis of the ratio R=σY /σJ/Ψ to discriminate between the different approaches. | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical review. D, Particles and fields. Vol. 65, no. 3 (Feb. 2002), 037503 4p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Modelo de cor | pt_BR |
dc.subject | Interações elétron-próton | pt_BR |
dc.subject | Fotoproducao de mesons | pt_BR |
dc.subject | Interações foton-próton | pt_BR |
dc.subject | Pomerons | pt_BR |
dc.title | Color evaporation and elastic [ípsilon] photoproduction at DESY HERA | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000312069 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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