Table 2.

Observed and expected background and signal yields for each final state in the H→ZZ→2ℓ2ℓ′ channel. For the Z+X background, the estimations are based on data. The uncertainties represent the statistical and systematic uncertainties combined in quadrature

Channel	4e	4μ	2e2μ	2ℓ2τ
ZZ background	28.6±3.3	44.6±4.6	70.8±7.5	12.1±1.5
Z+X	\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$2.3 ^{ + 2.1 }_{ - 1.5 }$\end{document}	\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$1.1 ^{ + 0.8 }_{ - 0.7 }$\end{document}	\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$3.6 ^{ + 2.9 }_{ - 2.2 }$\end{document}	8.9±2.5
All backgrounds	\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$30.9 ^{ + 3.9 }_{ - 3.6 }$\end{document}	\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$45.7 ^{ + 4.7 }_{ - 4.7 }$\end{document}	\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$74.4 ^{ + 8.0 }_{ - 7.8 }$\end{document}	21.0±2.9
Observed	26	42	88	20
m H=350 GeV	5.4±1.4	7.6±1.6	13.2±3.0	3.1±0.8
m H=500 GeV	1.9±0.9	2.7±1.2	4.6±2.1	1.4±0.7