Next-to-leading order perturbative QCD predictions for exclusive <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:mrow></mml:math> photoproduction in oxygen-oxygen and lead-lead collisions at energies available at the CERN Large Hadron Collider

We present predictions for the cross sections of coherent $J/\psi$ photoproduction in lead-lead and oxygen-oxygen ultraperipheral collisions (UPCs) as a function rapidity at LHC framework collinear factorization next-to-leading order (NLO) perturbative QCD. Taking generalized parton distribution functions their forward limit using EPPS21, nNNPDF3.0, nCTEQ15WZSIH nuclear functions, we update our recent results Pb-Pb collisions, make detailed O-O several beam energy configurations, examine ratio UPC sections. show that latter observable allows one to significantly reduce scale uncertainty NLO this process.