The QCD pomeron in ultraperipheral heavy ion collisions: IV. Photonuclear production of vector mesons期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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The QCD pomeron in ultraperipheral heavy ion collisions: IV. Photonuclear production of vector mesons

Authors:	V?P?Gon?alves Email author" target="_blank">M?V?T?Machado Email author

Institution:	(1) Instituto de Física e Matemática, Universidade Federal de Pelotas, Caixa Postal 354, CEP 96010-090 Pelotas, RS, Brazil;(2) Unidade de Bento Gonçalves, Universidade Estadual do Rio Grande do Sul - UERGS, CEP 95700-000 Bento Gonçalves, RS, Brazil;(3) High Energy Physics Phenomenology Group, GFPAE IF-UFRGS, Caixa Postal 15051, CEP 91501-970 Porto Alegre, RS, Brazil

Abstract:	The photonuclear production of vector mesons in ultraperipheral heavy-ion collisions is investigated within the QCD color dipole picture, with particular emphasis on the saturation model. The integrated cross section and the rapidity distribution for the $AA \rightarrow V AA$ ( $V = \rho, \omega, \phi, J/\Psi$ ) process are computed and theoretical estimates for scattering on both light and heavy nuclei are given for the energies of RHIC and LHC. A comparison with the recent STAR data on coherent production of $\rho$ mesons is also presented. Furthermore, we calculate the photoproduction of vector mesons in proton-proton collisions at RHIC, Tevatron and LHC energies.Received: 12 January 2005, Revised: 2 February 2005, Published online: 9 March 2005

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