Exclusive photoproduction at the Tevatron and LHC within the dipole picture

Abstract

We provide predictions for the rapidity distributions of exclusive photoproduced J/psi and Upsilon mesons, and Z^0 bosons, at the Tevatron and LHC. We use the equivalent-photon approximation with the photon-proton cross sections given by the impact parameter dependent dipole saturation model, which has already been shown to give a good description of a wide variety of HERA data. We derive the quark-antiquark light-cone wave functions of timelike neutral electroweak bosons. An essential difference is pointed out between the amplitude for timelike heavy boson photoproduction and the amplitude for deeply virtual Compton scattering.

arXiv comment18 pages, 9 figures. Version published in Phys. Rev. D; corrections made to Table II and Eqs.(A.14,A.15)

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