The nuclear modification factor for $\psi(\rm 2S)$, compared to the corresponding quantity for J/$\psi$. The horizontal bars correspond to the width of the rapidity regions under study The vertical error bars correspond to statistical uncertainties, the boxes to uncorrelated systematic uncertainties, and the shaded areas to partially correlated uncertainties The filled box on the right, centered on $R_{\rm pPb}=1$, shows uncertainties that are fully correlated between J/$\psi$ and $\psi(\rm 2S)$. Model calculations tuned on J/$\psi$, and including nuclear shadowing and coherent energy loss are also shown The corresponding calculations for $\psi(\rm 2S)$ produce identical values for the coherent energy loss mechanisms and a 2-3% larger result for nuclear shadowing and therefore are not shown. | |