Nuclear modification factor of prompt $\jpsi$ as a function of $\pt$ in 0--10\% (upper left panel), 10--30\% (top right panel) and 30--50\% (bottom left panel) centrality classes. Results are compared with similar measurements from the ATLAS  and CMS  collaborations. The centrality dependent prompt $\jpsi$ $\RAA$ in 1.5 $< \pt <$ 10 GeV/$c$ is shown in the bottom right panel (centrality is expressed in terms of average number of participants). Error bars and boxes represent, respectively, statistical and systematic uncertainties uncorrelated with $\pt$ (centrality, for the bottom right panel). Global uncertainties are shown as boxes around unity.