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

David d'Enterria
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Abstract

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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David d'Enterria. 2006-01-08. Coherent photoproduction of J/Psi and high-mass e+e- pairs in ultra-peripheral Au+Au collisions at sqrt(s_NN) = 200 GeV. https://arxiv.org/abs/nucl-ex/0601001

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