Table 11.

Sources of systematic uncertainties for the ANN method and their effects on the background prediction in bins of . The total uncertainty is the individual uncertainties summed in quadrature

range [GeV]	[350–500) (%)	≥500 (%)
Jet and energy scale	3	4
Lepton p T scale	3	5
Lepton efficiency	0.3	0.4
\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\sigma(\mathrm{t}\overline{\mathrm{t}})$\end{document} and σ(W)	3	2
W polarization in W+jets	1	3
W boson p T spectrum in W+jets	10	2
\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\mathrm{t}\overline{\mathrm{t}}$\end{document} (ℓℓ)	1	7
Other backgrounds	1	1
SM simulation statistics	15	23
Total systematic uncertainty	19	26