2025/08/29 by Mäntysaari, Heikki, Roch, Hendrik, Salazar, Farid +3
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)
paper · doi:10.48550/arxiv.2508.21562
We perform a global Bayesian analysis of diffractive J/ψ production in γ+p and γ+Pb collisions within a Color Glass Condensate based framework. Using data from HERA and the LHC, we find that a simultaneous description of γ+p and γ+Pb observables is challenging. Introducing a global K-factor to account for theoretical uncertainties improves the agreement with data and enhances the framework's predictive power. We present predictions for integrated J/ψ cross sections at different photon-nucleus energies and study their A-dependence relative to a no-saturation baseline, quantifying nuclear suppression and providing insights into the onset of saturation effects.