\jpsi (left) and \upsone (right) \RAA as a function of \pt in centrality-integrated \PbPb collisions at \fivenn in $2.5 < y_{\mathrm{cms}} < 4$ (blue circles)~. Results are compared to the corresponding \RpA values obtained in \pPb collisions at \eightnn in $2.03 < y_{\mathrm{cms}} < 3.53$ (light gray circles) and $-4.46 < y_{\mathrm{cms}} < -2.96$ (dark gray circles)~. The gray bands correspond to model calculations based on a pure nuclear shadowing scenario using EPS09LO as set of nuclear parton distribution functions (filled bands)~. For the \jpsi case, a theory calculation based on a CGC approach coupled with a NRQCD production mechanism is also shown (dashed band)~.