Exclusive ${\rm Y}$ photoproduction in hadronic collisions at CERN LHC energies

Abstract

The exclusive ${\rm Y}$ photoproduction in proton-proton and proton - nucleus collisions at LHC energies is investigated using the color dipole formalism and considering different models for the ${\rm Y}$ wave function and forward dipole - target scattering amplitude. Our goal is to update the color dipole predictions and estimate the theoretical uncertainty present in these predictions. We present predictions for the kinematical ranges probed by the ALICE, CMS and LHCb Collaborations.

arXiv comment8 pages, 5 figures and 3 tables. Version to be published in Physics Letters B

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