arXiv:nucl-th/9812056·v2·Nuclear Theory
J/psi Production and Absorption in High Energy Proton-Nucleus Collisions
Charles Gale (1) · Sangyong Jeon (2) · Joseph Kapusta (3) ((1) McGill University · (2) LBNL · (3) University of Minnesota)
Abstract
Measured J/Psi production cross sections for 200 and 450 GeV/c protons incident on a variety of nuclear targets are analyzed within a Glauber framework which takes into account energy loss of the beam proton, the time delay of particle production due to quantum coherence, and absorption of the J/Psi on nucleons. The best representation is obtained for a coherence time of 0.5 fm/c, previously determined by Drell-Yan production in proton-nucleus collisions, and an absorption cross section of 3.6 mb, which is consistent with the value deduced from photoproduction of the J/Psi on nuclear targets.
Comments: LaTeX2e, 7 pages, 4 PS figures. Typos removed, minor changes