Fig. 6.

The transverse mass distribution for $W^{+}\to e^{+}\mathit{\nu }$ candidates (left) and $W^{-}\to e^{-}\overline{\mathit{\nu }}$ candidates (right). The simulated samples are normalized to the data luminosity. The multijet background shape is taken from a data control sample and normalized to the estimated yield of multijet events. The sum of all expected background and signal contributions is shown as a solid line with a hashed band detailing the statistical uncertainty and labelled “total (stat)”. The legend lists only background sources with a visible contribution