Projection of the heavy-flavour dielectron fit (grey line) in inelastic \pp collisions at $\sqrts = 13\TeV$ onto the dielectron mass (left) and \ptee (right) using the \PYTHIA and \POWHEG event generators. The lines show the charm (red) and beauty (magenta) contributions after the fit The global scale uncertainty on the \pp luminosity (5\%) is not shown. The statistical and systematic uncertainties of the data are shown as vertical bars and boxes. The fits with \PYTHIA and \POWHEG result in a $\chi^2/{\rm ndf}$ of $57.8/66$ and $52.6/66$, respectively.