Comparison of the $\RAA$ measurements with the calculations by Djordjevic et al.[57] including radiative and collisional energy loss. Lines of the same style enclose a band representing the theoretical uncertainty Left: D mesons and charged pions in $8< \pt< 16 $ Gev/$c$. Right: D mesons in $8< \pt< 16 $ Gev/$c$ and non-prompt J/$\psi$ mesons in $6.5< \pt< 30 $ Gev/$c$ [30] For the latter, the model results for the case in which the b quark interactions are calculatedusing the c quark mass are shown as well [15].