Nuclear modification factors \ROO (upper panel) and \RpO (lower panel). Vertical bars (boxes) represent the statistical (systematic) uncertainty, while a box around unity denotes the normalization uncertainty due to the luminosity determination. Shaded bands show predictions  of four nPDFs and their 68\% confidence level, including nPDF and scale uncertainty. The lower panel additionally includes two calculations of fully coherent energy loss (FCEL) for the two partonic channels gg$\rightarrow$q$\bar{\text{q}}$ and gg$\rightarrow$gg .