Table 8.

Predicted (post-fit) and observed event yields for the signal region (SR), after the requirement on the second neural network discriminant, $O_{\text{NN2}}>0.8$. The multijet background prediction is obtained from the fit to the $E_{\text{T}}^{\text{miss}}$ distribution described in Sect. 6, while all the other predictions and uncertainties are taken from the total cross-section measurement. An uncertainty of 0 means that the value is $<0.5$

Process	${\ell }^{+}$ SR $(O_{\text{NN2}}>0.8)$	${\ell }^{-}$ SR $(O_{\text{NN2}}>0.8)$
$tq$	3440 ± 140	3 ± 0
$\overline{t}q$	2 ± 0	1860 ± 100
$t\overline{t},Wt,t\overline{b}/\overline{t}b$	1072 ± 64	1057 ± 63
$W^{+}$ + jets	770 ± 150	0 ± 0
$W^{-}$ + jets	0 ± 0	494 ± 99
Z, VV + jets	43 ± 9	48 ± 10
Multijet	192 ± 30	186 ± 27
Total estimated	5520 ± 220	3650 ± 160
Data	5546	3647