Coherent photoproduction of J/Psi and high-mass e+e- pairs in ultra-peripheral Au+Au collisions at sqrt(s_NN) = 200 GeV

Details Coherent photoproduction of J/Psi and high-mass e+e- pairs in ultra-peripheral Au+Au collisions at sqrt(s_NN) = 200 GeV Coherent photoproduction of J/Psi and high-mass e+e- pairs in ultra-peripheral Au+Au collisions at sqrt(s_NN) = 200 GeV

2005-12-31

arxiv.org/abs/nucl-ex/0601001v2

Physics

Nuclear Physics

Nuclear Experiment

13 pages, 9 figures, "Quark Matter 2005" poster Proceedings. [An extended version also presented at the "Physics of Hadronic I

Scientific paper

High energy ultra-peripheral collisions (UPC) of heavy-ions generate strong electromagnetic fields which open the possibility to study gamma-gamma and gamma-nucleus processes in a kinematic regime so far unexplored. We report on preliminary PHENIX results of J/Psi and high-mass e+e- photoproduction at mid-rapidity in coherent electromagnetic Au+Au interactions at sqrt(s_NN) = 200 GeV tagged with forward neutron emission from the Au* dissociation.

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