Table 8.

Single lepton channel: normalisation uncertainties (expressed in %) on signal and main background processes for the systematic uncertainties considered, before and after the fit to data in $(\ge 6\mathrm{j},\ge 4\mathrm{b})$ region of the single lepton channel. The total uncertainty can be different from the sum in quadrature of individual sources due to the anti-correlations between them

	Pre-fit				Post-fit
	$t\overline{t}H$ (125)	$t\overline{t}$ + light	$t\overline{t}+c\overline{c}$	$t\overline{t}+b\overline{b}$	$t\overline{t}H$ (125)	$t\overline{t}$ + light	$t\overline{t}+c\overline{c}$	$t\overline{t}+b\overline{b}$
$\ge$6 j, $\ge$4 b
Luminosity	$\pm 2.8$	$\pm 2.8$	$\pm 2.8$	$\pm 2.8$	$\pm 2.6$	$\pm 2.6$	$\pm 2.6$	$\pm 2.6$
Lepton efficiencies	$\pm 1.4$	$\pm 1.4$	$\pm 1.4$	$\pm 1.5$	$\pm 1.3$	$\pm 1.3$	$\pm 1.3$	$\pm 1.3$
Jet energy scale	$\pm 6.4$	$\pm 13$	$\pm 11$	$\pm 9.2$	$\pm 2.3$	$\pm 5.3$	$\pm 4.7$	$\pm 3.6$
Jet efficiencies	$\pm 1.7$	$\pm 5.2$	$\pm 2.7$	$\pm 2.5$	$\pm 0.7$	$\pm 2.3$	$\pm 1.2$	$\pm 1.1$
Jet energy resolution	$\pm 0.1$	$\pm 4.4$	$\pm 2.5$	$\pm 1.6$	$\pm 0.1$	$\pm 2.3$	$\pm 1.3$	$\pm 0.8$
b-tagging efficiency	$\pm 9.2$	$\pm 5.6$	$\pm 5.1$	$\pm 9.3$	$\pm 5.0$	$\pm 3.1$	$\pm 2.9$	$\pm 5.0$
c-tagging efficiency	$\pm 1.7$	$\pm 6.0$	$\pm 12$	$\pm 2.4$	$\pm 1.4$	$\pm 5.1$	$\pm 10$	$\pm 2.1$
l-tagging efficiency	$\pm 1.0$	$\pm 19$	$\pm 5.2$	$\pm 2.1$	$\pm 0.6$	$\pm 11$	$\pm 3.0$	$\pm 1.1$
High $p_{\mathrm{T}}$ tagging efficiency	$\pm 0.6$	–	$\pm 0.7$	$\pm 0.6$	$\pm 0.3$	–	$\pm 0.4$	$\pm 0.3$
$t\overline{t}$: $p_{\mathrm{T}}$ reweighting	–	$\pm 5.4$	$\pm 6.1$	–	–	$\pm 4.7$	$\pm 5.4$	–
$t\overline{t}$: parton shower	–	$\pm 13$	$\pm 16$	$\pm 11$	–	$\pm 3.6$	$\pm 10$	$\pm 6.0$
$t\overline{t}$ + HF: normalisation	–	–	$\pm 50$	$\pm 50$	–	–	$\pm 28$	$\pm 14$
$t\overline{t}$ + HF: modelling	–	$\pm 11$	$\pm 16$	$\pm 8.3$	–	$\pm 3.6$	$\pm 9.1$	$\pm 7.1$
Theoretical cross sections	–	$\pm 6.3$	$\pm 6.3$	$\pm 6.3$	–	$\pm 4.1$	$\pm 4.1$	$\pm 4.1$
$t\overline{t}H$ modelling	$\pm 2.7$	–	–	–	$\pm 2.6$	–	–	–
Total	$\pm 12$	$\pm 32$	$\pm 59$	$\pm 54$	$\pm 6.9$	$\pm 9.2$	$\pm 23$	$\pm 12$