Figure 3

$\pT$-differential production cross section of muons from heavy-flavour hadron decays at forward rapidity in pp collisions at $\sqrt s$ = 5.02 TeV. Statistical uncertainties (bars) and systematic uncertainties (boxes) are shown. The production cross section is compared with FONLL predictions  (top). The ratio of the data to FONLL calculations is shown in the lower panel. See the text for details.