Diffractive dijet photoproduction in ultraperipheral collisions at the LHC in next-to-leading order QCD

We make predictions for the cross sections of diffractive dijet photoproduction in pp, pa and aa ultraperipheral collisions (upcs) at the lhc during runs 1 and 2 using next-to-leading perturbative qcd. we find that the resulting cross sections are sufficiently large and, compared to lepton-proton scattering at hera, have an enhanced sensitivity to small observed momentum fractions in the diffractive exchange, commonly denoted $$ {z}_{mathrm{mathbb{p}}}^{mathrm{jets}} $$ , and an unprecedented reach in the invariant mass of the photon-nucleon system w. we examine two competing schemes of diffractive qcd factorization breaking, which assume either a global suppression factor or a suppression for resolved photons only and demonstrate that the two scenarios can be distinguished by the nuclear dependence of the distributions in the observed parton momentum fraction in the photon x γ jets .