2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/191833The approach to problem of nuclear shadowing based on Gribov Reggeon calculus is presented. Here the total cross section of $h A$ interaction is found in a parameter-free description, employing the new data on the gluon density of the Pomeron, measured with high precision at HERA, as input. The model is then applied for calculation of $J/ψ$ production in $d Au$ collisions at top RHIC energy. It is shown that the theoretical estimates are in a very good agreement with the PHENIX data, and further predictions for the $J/ψ$ suppression in $p Pb$ collisions at coming soon LHC are made.SQM2007 proceedings, 6 pagesHigh Energy Physics - PhenomenologyNuclear ExperimentNuclear Theorytext