2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185135In this paper, we calculate the cross-section for the photoproduction of quark-antiquark pairs in the peripheral collision of ultra-relativistic nuclei, by treating the color field of the nuclei within the Color Glass Condensate model. We find that this cross-section is sensitive to the saturation scale $Q_s^2$ that characterizes the model. In particular, the transverse momentum spectrum of the produced pairs could be used to measure the properties of the color glass condensate.25 pages LaTeX document - A reference and some footnotes added (version to appear in Nucl. Phys. A)High Energy Physics - PhenomenologyNuclear Theorytext