# Figure 3

 Nuclear modification factors of muons from heavy-flavour hadron decays as a function of $\pt$ for p-Pb collisions at $\sqrt {s_{\rm NN}}$ = 5.02 TeV in two rapidity sub-intervals at forward (top) and backward (bottom) rapidity. Statistical uncertainties (bars), systematic uncertainties (open boxes), and normalisation uncertainties (filled box at $R_{\rm pPb}^{\mu^\pm \leftarrow {\rm HF}}$ = 1) are shown. For visibility, the points for the rapidity intervals $2.79 < y_{\rm cms} < 3.53$ and $-3.71 < y_{\rm cms} < -2.96$ are slightly shifted horizontally. Filled (open) symbols refer to the pp reference obtained from anenergy and rapidity scaling to the measurement at $\sqrt s$ = 7 TeV (an extrapolation based on FONLL calculations).