Abstract
Ultra-peripheral collisions (UPCs), studied using the ALICE detector, allow us to investigate the low-\mathbf{x}𝐱 behavior of the gluon distribution of the colliding particles.Two new measurements of coherent J/\mathbf{\psi}𝛙 photoproduction cross section from Pb–Pb UPCs at \mathbf{\sqrt{s_{NN}}}=5.02𝐬𝐍𝐍=5.02 TeV are presented: the first measurement of the \mathbf{|t|}|𝐭|-dependence of the cross section providing a new tool to investigate the transverse gluonic structure at low Bjorken-\mathbf{x}𝐱 and a rapidity-differential measurement at midrapidity allowing us to provide stringent constraints on nuclear gluon shadowing and saturation models.In addition, prospects for heavy vector meson photoproduction measurements in LHC Run 3 and 4 are presented.
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