Figure 1

The $p_{\rm T}$-differential invariant production cross section for electrons from semileptonicheavy-flavour hadron decays measured at mid-rapidity in pp collisions at $\sqrt{s} = 2.76$ TeV in comparison with FONLL pQCD calculations  (upper panel), and the ratio of the data to the FONLL calculation (lower panel). Statistical and systematic uncertainties areshown as vertical bars and boxes, respectively.