# Figure 4

 Comparison of the $\pT$-differential nuclear modification factor of muons from heavy-flavour hadron decays at forward rapidity in Xe--Xe collisions at $\sNN$ = 5.44 TeV (centrality class 0--10\%) and Pb--Pb collisions at $\sNN$ = 5.02 TeV for the 0--10\% (left) and 10--20\% (right) centrality classes. Statistical uncertainties (vertical bars) and systematic uncertainties (open boxes) are shown. The filled boxes at $\RAA$ = 1 represent the normalisation uncertainty. Comparisons with PHSD~ and MC@sHQ+EPOS2~ model predictions are also displayed.