Table 2.

The measured spin asymmetry in the muon and electron channel and their combination. A breakdown of the systematic uncertainties is also provided. Minor systematic uncertainties (lepton efficiencies, pileup, and unclustered energy) have been grouped into the “Others” category

	Central values	$A_{\mathrm{\mu }}$	$A_{\text{e}}$	$A_{\mathrm{\mu }\text{+e}}$
		0.403	0.446	0.440
Profiled uncertainties	Statistical	$\pm$0.029	$\pm$0.038	$\pm$0.024
	$\mathrm{t}\overline{\mathrm{t}}/\mathrm{tW}$ normalisation	$\pm$0.010	$\pm$0.007	$\pm$0.007
	$\text{W}/\text{Z}/{\mathrm{\gamma }}^{\ast }\text{+jets}$ normalisation	$\pm$0.012	$\pm$0.011	$\pm$0.012
	Multijet normalisation	$<$0.001	$<$0.001	$\pm$0.003
	Multijet shape	$<$0.001	$\pm$0.006	$<$0.001
	Jet energy scale/resolution	$\pm$0.008	$<$0.001	$<$0.001
	b tagging efficiencies/misidentification	$<$0.001	$\pm$0.009	$\pm$0.004
	Others	$<$0.001	$\pm$0.003	$\pm$0.005
Theoretical uncertainties	Top quark mass	$\pm$0.033	$\pm$0.063	$\pm$0.044
	PDF+${\alpha }_S$	$\pm$0.011	$\pm$0.009	$\pm$0.011
	t channel renorm./fact. scales	$\pm$0.013	$\pm$0.018	$\pm$0.020
	t channel parton shower	$\pm$0.030	$\pm$0.008	$\pm$0.014
	$\mathrm{t}\overline{\mathrm{t}}$ renorm./fact. scales	$\pm$0.008	$\pm$0.019	$\pm$0.017
	$\mathrm{t}\overline{\mathrm{t}}$ parton shower	$\pm$0.031	$\pm$0.037	$\pm$0.033
	$\mathrm{t}\overline{\mathrm{t}}$ underlying event tune	$<$0.001	$\pm$0.014	$\pm$0.014
	$\mathrm{t}\overline{\mathrm{t}}$ $p_{\mathrm{T}}$ reweighting	$<$0.001	$\pm$0.010	$\pm$0.009
	$\text{W}\text{+jets}$ renorm./fact. scales	$<$0.001	$\pm$0.019	$\pm$0.014
	Color reconnection	$\pm$0.036	$\pm$0.056	$\pm$0.031
	Fragmentation model	$\pm$0.011	$\pm$0.011	$\pm$0.011
Profiled uncertainties only (statistical+experimental)		$\pm$0.041	$\pm$0.047	$\pm$0.031
Total uncertainties		$\pm$0.071	$\pm$0.099	$\pm$0.070