Recent ALICE results on photon-induced $J/\psi$ production

The strong electromagnetic fields generated by ultra-relativistic heavy ions provide the possibility to study photon-induced processes at the LHC in new kinematic regions. ALICE has measured the coherent photoproduction of J/ in PbPb and pPb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. These collisions correspond to photonproton and photonPb interactions, respectively. In these cases, the mass of the charm quark allows for perturbative QCD computations addressing the phenomena of saturation and nuclear shadowing, thus the study of such collisions provides information about the initial state of hadrons. The evolution of the exclusive J/ photoproduction cross section off protons is measured with pPb data. The new PbPb data from LHC Run 2 cover a larger kinematic range with smaller experimental uncertainties than in the past. Both measurements from pPb and PbPb collisions, are compared with predictions of available models.