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The strong electromagnetic fields surrounding the Pb-ions accelerated at theCERN Large Hadron Collider (LHC) allow two-photon and photonuclear interactionsto be studied in a so far unexplored kinematic regime. Exclusivephotoproduction of vector mesons can be studied in ultra-peripheral collisions,where the impact parameters are larger than the sum of the nuclear radii andhadronic interactions are strongly suppressed.  During the heavy-ion runs at the LHC in 2010 and 2011, the ALICEcollaboration used special triggers to select ultra-peripheral collisions.These triggers were based on the Muon spectrometer, the Time-of-Flightdetector, the Silicon Pixel detector, and the VZERO scintillator array.Information from other detectors was also used in the analysis. The crosssection for coherent photoproduction of J/Psi mesons at forward rapidities willbe presented. The result will be compared to model calculations and itsimplications for nuclear gluon shadowing will be discussed.

Photonuclear vector meson production in ultra-peripheral Pb-Pb collisions studied by the ALICE experiment at the LHC