2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42953Exclusive vector meson photoproduction, $pp\to ppV$ and $\bar pp\to\bar ppV$ occurs with significant rates at hadron colliders. The reaction can be used to study the gluon distribution of protons. Vector mesons may be produced with either proton as a target; because of interference between the two production channels, the $p_T$ spectra of vector mesons produced in $pp$ and $\bar pp$ collisions are quite different. Because of the unique event signature, vector meson photoproduction can be separated from hadroproduction events, despite the small ratio of cross sections. We consider production of $J/ψ$ and $Υ$ at RHIC, the Tevatron and the LHC.Typos in references fixed Presented at "Small-x and Diffraction 2003, Sept. 17-20, 2003, Fermilab. 5 pages with 2 figuresHigh Energy Physics - Phenomenologytext