Table 2.

Simulated flavour composition (in %) of the SL sample after the selection summarized in Table 1 and $\text{OS--SS}$ subtraction, for the electron and muon decay channels of the W boson. $\text{W}+\text{Q}\overline{\text{Q}}$ is the sum of the contributions of $\text{W}+\text{c}\overline{\text{c}}$ and $\text{W}+\text{b}\overline{\text{b}}$; its negative value is an effect of the OS–SS subtraction. Quoted uncertainties are statistical only

SL channel	$\text{W}+\text{c}$	$\text{W}+\text{Q}\overline{\text{Q}}$	$\text{W}+\text{u}\text{s}$	$\text{Z}+\text{jets}$	$\text{t}\overline{\text{t}}$	single t	$\text{VV}$
$\text{W}\to \text{e}\mathrm{\nu }$	$84.1\pm 0.9$	$-0.6\pm 0.4$	$4.5\pm 0.7$	$0.5\pm 0.2$	$8.3\pm 0.4$	$2.3\pm 0.1$	$0.9\pm 0.1$
$\text{W}\to \mathrm{\mu }\mathrm{\nu }$	$78.7\pm 1.1$	$0.1\pm 0.5$	$3.1\pm 0.7$	$7.0\pm 0.2$	$7.7\pm 0.5$	$2.5\pm 0.1$	$0.9\pm 0.1$