Neutron tagging of quasielastic J/psi photoproduction off nucleus in ultraperipheral heavy ion collisions at RHIC energies

Abstract

We compare the coherent and quasielastic J/psi photoproduction in the peripheral heavy ion collisions in kinematics of RHIC. Our improved estimate of the total coherent cross section is a factor of two smaller than the earlier ones. We find that the counting rate of quasielastic J/psi photoproduction tagged by neutrons emitted due to cascading of the recoiled nucleon within the residual nucleus exceeds the rate of the coherent events. We argue that measurements of this process can be used to learn about the dynamics of color dipole-nucleon interactions in nuclei in the wide effective range of energies of gamma A interactions.

12 pages, 5 figures

References in corpus (4)

• Physics of Ultra-Peripheral Nuclear Collisions
• Predictions of the Generalized Glauber Model for the coherent $\rho$-production at RHIC and the STAR data
• Probing coherent charmonium photoproduction off light nuclei at medium energies
• Coherent Photoproduction from Nuclei

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