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benhoob |
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\clearpage
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\section{Results}
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In this section we provide the results of the inclusive and targeted searches. The observed and predicted \MET\ distributions for the
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inclusive analysis are indicated in Fig.~\ref{fig:results_incl}. A summary of the results in the signal regions is provided in
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Table~\ref{tab:results_incl}. In the low \MET\ region (\MET\ $<$ 100 GeV) which is dominated by the \zjets\ background, the observed
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yields are in good agreement with the predicted background. This is also the case in the high \MET\ tail (\MET\ $>$ 200 GeV).
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In the moderate \MET\ region (100 $<$ \MET $<$ 200 GeV) we observe a slight excess in the data with respect to the predicted background.
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Taking into account the full uncertainty on the background prediction, the significance of the excess is about 1.3$\sigma$.
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The separate results for the ee and $\mu\mu$ channels are presented in App.~\ref{app:results}. For this \MET\ region, we find an excess
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of 1.4$\sigma$ in the ee channel and 0.7$\sigma$ in the $\mu\mu$ channel.
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\begin{figure}[!h]
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\begin{center}
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\begin{tabular}{cc}
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\includegraphics[width=0.6\textwidth]{plots/met_0.pdf}
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\end{tabular}
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\caption{Results of the inclusive analysis. The observed \MET\ distribution (black points) is compared with the sum of the predicted \MET\
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distributions from \zjets, flavor-symmetric backgrounds, and WZ+ZZ backgrounds. The ratio of observed to predicted yields in each bin is
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indicated. The error bars indicate the statistical uncertainty in the data and the shaded band indicates the total background uncertainty.
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\label{fig:results_incl}
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}
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\end{center}
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\end{figure}
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\begin{table}[htb]
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\begin{center}
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\footnotesize
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\caption{\label{tab:results_incl} Summary of results in the inclusive analysis. The total background is the sum of the \zjets\ background predicted from
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the \MET\ templates method (\zjets\ bkg), the flavor-symmetric background predicted from e$\mu$ events (FS bkg), and the WZ and ZZ backgrounds predicted from MC
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(WZ bkg and ZZ bkg). All uncertainties include both the statistical and systematic components. The Gaussian significance of the deviation between the data
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and total background is indicated for signal regions with at least 20 observed events. }
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\begin{tabular}{l|c|c|c|c|c|c}
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\hline
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\hline
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& \MET\ $>$ 0 GeV & \MET\ $>$ 30 GeV & \MET\ $>$ 60 GeV & \MET\ $>$ 100 GeV & \MET\ $>$ 200 GeV & \MET\ $>$ 300 GeV \\
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\hline
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\zjets\ bkg &134792 $\pm$ 40438 & 32856 $\pm$ 9858 & 1546 $\pm$ 464 & 68.6 $\pm$ 20.8 & 4.3 $\pm$ 1.4 & 0.0 $\pm$ 0.0 \\
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FS bkg & 1539 $\pm$ 239 & 1281 $\pm$ 199 & 793 $\pm$ 123 & 274 $\pm$ 43 & 13.7 $\pm$ 2.5 & 1.8 $\pm$ 1.1 \\
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WZ bkg & 168.6 $\pm$ 134.9 & 132.5 $\pm$ 106.0 & 71.6 $\pm$ 57.3 & 28.9 $\pm$ 23.1 & 4.2 $\pm$ 3.4 & 0.9 $\pm$ 0.7 \\
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ZZ bkg & 35.6 $\pm$ 28.5 & 31.1 $\pm$ 24.9 & 21.8 $\pm$ 17.5 & 11.9 $\pm$ 9.5 & 2.5 $\pm$ 2.0 & 0.6 $\pm$ 0.5 \\
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total bkg &136535 $\pm$ 40439 & 34300 $\pm$ 9860 & 2432 $\pm$ 484 & 383 $\pm$ 54 & 24.7 $\pm$ 4.9 & 3.3 $\pm$ 1.4 \\
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data & 134793 & 33810 & 2526 & 456 & 24 & 5 \\
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significance & -0.0 & -0.0 & 0.2 & 1.3 & -0.1 & 0.6 \\
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\hline
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\hline
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\end{tabular}
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\end{center}
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\end{table}
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\clearpage
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The observed and predicted \MET\ distributions for the
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inclusive analysis are indicated in Fig.~\ref{fig:results_targ}. A summary of the results in the signal regions is provided in
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Table~\ref{tab:results_targ}. The observed yields are in good agreement with the predicted background in all signal regions.
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\begin{figure}[!h]
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\begin{center}
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\begin{tabular}{cc}
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\includegraphics[width=0.6\textwidth]{plots/met_bveto_0.pdf}
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\end{tabular}
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\caption{Results of the targeted analysis. The observed \MET\ distribution (black points) is compared with the sum of the predicted \MET\
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distributions from \zjets, flavor-symmetric backgrounds, and WZ+ZZ backgrounds. The ratio of observed to predicted yields in each bin is
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indicated. The error bars indicate the statistical uncertainty in the data and the shaded band indicates the total background uncertainty.
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\label{fig:results_targ}
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}
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\end{center}
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\end{figure}
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\begin{table}[htb]
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\begin{center}
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\scriptsize
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\caption{\label{tab:results_targ} Summary of results in the targeted analysis. The total background is the sum of the \zjets\ background predicted from
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the \MET\ templates method (\zjets\ bkg), the flavor-symmetric background predicted from e$\mu$ events (FS bkg), and the WZ and ZZ backgrounds predicted from MC
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(WZ bkg and ZZ bkg). All uncertainties include both the statistical and systematic components. The Gaussian significance of the deviation between the data
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and total background is indicated for signal regions with at least 20 observed events. }
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\begin{tabular}{l|c|c|c|c|c|c|c}
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\hline
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\hline
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& \MET\ $>$ 0 GeV & \MET\ $>$ 30 GeV & \MET\ $>$ 60 GeV & \MET\ $>$ 80 GeV & \MET\ $>$ 100 GeV & \MET\ $>$ 150 GeV & \MET\ $>$ 200 GeV \\
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\hline
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\zjets\ bkg & 36487 $\pm$ 10947 & 7856 $\pm$ 2357 & 257 $\pm$ 77 & 28.6 $\pm$ 8.7 & 6.6 $\pm$ 2.0 & 1.2 $\pm$ 0.4 & 0.4 $\pm$ 0.1 \\
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FS bkg & 86.9 $\pm$ 14.7 & 65.9 $\pm$ 11.3 & 39.0 $\pm$ 6.8 & 24.1 $\pm$ 4.3 & 11.3 $\pm$ 2.2 & 1.8 $\pm$ 1.1 & 0.3 $\pm$ 0.2 \\
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WZ bkg & 26.9 $\pm$ 21.5 & 20.9 $\pm$ 16.7 & 10.5 $\pm$ 8.4 & 6.0 $\pm$ 4.8 & 3.4 $\pm$ 2.7 & 0.9 $\pm$ 0.7 & 0.3 $\pm$ 0.3 \\
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ZZ bkg & 7.6 $\pm$ 6.1 & 6.4 $\pm$ 5.1 & 4.1 $\pm$ 3.3 & 2.9 $\pm$ 2.3 & 1.9 $\pm$ 1.6 & 0.8 $\pm$ 0.6 & 0.3 $\pm$ 0.3 \\
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\hline
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total bkg & 36608 $\pm$ 10947 & 7949 $\pm$ 2357 & 310 $\pm$ 78 & 61.6 $\pm$ 11.1 & 23.3 $\pm$ 4.4 & 4.7 $\pm$ 1.5 & 1.3 $\pm$ 0.5 \\
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data & 36487 & 8144 & 327 & 52 & 22 & 1 & 0 \\
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significance & -0.0 & 0.1 & 0.2 & -0.7 & -0.2 & -2.0 & -2.8 \\
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\hline
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\hline
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\end{tabular}
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\end{center}
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\end{table}
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