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\subsection{Test of control region with isolated track in CR5} |
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\label{sec:CR5} |
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[NEED TO VERIFY THAT THE DESCRIPTION OF SCALE FACTORS IS CORRECT AND |
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ADD A LITTLE BIT OF DETAIL, AS NOTED IN THE TEXT] |
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This CR consists of events that pass all cuts but fail the isolated |
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track veto cut. These events (especially in the tail of $M_T$) are |
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predominantly $t\bar{t}$ dileptons. Thus the test in this control |
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regions is similar to that performed in CR4 and described |
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region is similar to that performed in CR4 and described |
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in Section~\ref{sec:CR4-valid}. There is some non-trivial |
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complementarity because CR5 also includes events with |
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taus and events with electrons or muons below the threshold of |
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We define a ``pre-veto'' sample as the sample of events that pass |
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all cuts without any isolated track requirements. This sample is |
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dominated by $t\bar{t} \to \ell +$ jets. We normalize the dilepton |
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component of the top MC to that sample (NEED TO EXPLAIN EXACTLY HOW). |
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component of the top MC to that sample. This is done by normalizing |
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the total \ttbar\ MC to the $M_T$ peak region, $50 < M_T < 80$ GeV |
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in this sample. |
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Next we define a ``post-veto'' sample as the events that have an |
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isolated track. The $t\bar{t} \to \ell +$ jets component is |
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normalized in this sample (ALSO, NEED TO EXPLAIN HOW, EXACTLY). |
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normalized in this sample, again by normalizing to the $M_T$ peak |
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region. |
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These normalization factors are summarized in Table~\ref{tab:cr5mtsf}. |
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The post-veto $\ttdl$ is taken from MC, but with scale factor obtained |
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by the normalization of the ``pre-veto'' sample. |
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The underlying \met\ and $M_T$ distributions are shown in |
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Figures~\ref{fig:cr5met} and~\ref{fig:cr5rest}. The data-MC agreement |
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Figures~\ref{fig:cr5met} and~\ref{fig:cr5mtrest}. The data-MC agreement |
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is quite good. Quantitatively, this is also shown in Table~\ref{tab:cr5yields}. |
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This is the second key test of the \ttdl\ modeling |
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\begin{table}[!h] |
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\begin{center} |
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\begin{tabular}{l||c|c|c|c} |
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{\footnotesize |
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\begin{tabular}{l||c||c|c|c|c|c|c|c} |
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\hline |
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Sample & CR5A & CR5B & CR5C & CR5D \\ |
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Sample & CR5PRESEL & CR5A & CR5B & CR5C & CR5D & CR5E & |
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CR5F & CR5G \\ |
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\hline |
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\hline |
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Muon pre-veto \mt-SF & $0.98 \pm 0.02$ & $0.95 \pm 0.04$ & $0.99 \pm 0.08$ & $0.89 \pm 0.15$ \\ |
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Muon post-veto \mt-SF & $1.28 \pm 0.07$ & $1.20 \pm 0.13$ & $1.22 \pm 0.24$ & $1.25 \pm 0.43$ \\ |
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$\mu$ pre-veto \mt-SF & $1.05 \pm 0.01$ & $1.02 \pm 0.02$ & $0.95 \pm 0.03$ & $0.90 \pm 0.05$ & $0.98 \pm 0.08$ & $0.97 \pm 0.13$ & $0.85 \pm 0.18$ & $0.92 \pm 0.31$ \\ |
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$\mu$ post-veto \mt-SF & $1.25 \pm 0.04$ & $1.17 \pm 0.07$ & $1.05 \pm 0.12$ & $0.85 \pm 0.19$ & $0.84 \pm 0.30$ & $1.07 \pm 0.54$ & $1.38 \pm 1.14$ & $0.68 \pm 2.05$ \\ |
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\hline |
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\hline |
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Electron pre-veto \mt-SF & $0.83 \pm 0.02$ & $0.75 \pm 0.04$ & $0.64 \pm 0.07$ & $0.63 \pm 0.12$ \\ |
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Electron post-veto \mt-SF & $1.10 \pm 0.08$ & $1.02 \pm 0.11$ & $0.89 \pm 0.19$ & $1.27 \pm 0.41$ \\ |
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e pre-veto \mt-SF & $1.01 \pm 0.01$ & $0.95 \pm 0.02$ & $0.95 \pm 0.03$ & $0.94 \pm 0.06$ & $0.85 \pm 0.09$ & $0.84 \pm 0.13$ & $1.05 \pm 0.23$ & $1.04 \pm 0.33$ \\ |
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e post-veto \mt-SF & $1.21 \pm 0.04$ & $1.12 \pm 0.07$ & $1.25 \pm 0.14$ & $1.17 \pm 0.27$ & $2.01 \pm 0.64$ & $1.71 \pm 0.99$ & $2.79 \pm 2.04$ & $0.81 \pm 1.58$ \\ |
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\hline |
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\end{tabular} |
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\end{tabular}} |
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\caption{ \mt\ peak Data/MC scale factors. The pre-veto SFs are applied to the |
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\ttdl\ sample, while the post-veto SFs are applied to the single |
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lepton samples. The raw MC is used for backgrounds from rare processes. |
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\begin{table}[!h] |
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\begin{center} |
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\begin{tabular}{l||c|c|c|c} |
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{\footnotesize |
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\begin{tabular}{l||c||c|c|c|c|c|c|c} |
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\hline |
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Sample & CR5PRESEL & CR5A & CR5B & CR5C & CR5D & CR5E & |
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CR5F & CR5G \\ |
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\hline |
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Sample & CR5A & CR5B & CR5C & CR5D \\ |
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\hline |
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$\mu$ MC & $490 \pm 9$ & $299 \pm 7$ & $155 \pm 6$ & $49 \pm 3$ & $19 \pm 2$ & $7 \pm 1$ & $3 \pm 1$ & $2 \pm 1$ \\ |
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$\mu$ Data & $514$ & $311$ & $167$ & $57$ & $12$ & $4$ & $2$ & $1$ \\ |
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\hline |
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Muon MC & $293 \pm 9$ & $161 \pm 7$ & $51 \pm 4$ & $16 \pm 2$ \\ |
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Muon Data & $315$ & $165$ & $62$ & $13$ \\ |
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$\mu$ Data/MC SF & $1.05 \pm 0.05$ & $1.04 \pm 0.06$ & $1.08 \pm 0.09$ & $1.17 \pm 0.17$ & $0.64 \pm 0.20$ & $0.54 \pm 0.29$ & $0.66 \pm 0.49$ & $0.58 \pm 0.62$ \\ |
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\hline |
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Muon Data/MC SF & $1.07 \pm 0.07$ & $1.03 \pm 0.09$ & $1.21 \pm 0.18$ & $0.82 \pm 0.25$ \\ |
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\hline |
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e MC & $405 \pm 8$ & $239 \pm 7$ & $130 \pm 5$ & $43 \pm 3$ & $16 \pm 2$ & $8 \pm 1$ & $6 \pm 2$ & $3 \pm 1$ \\ |
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e Data & $427$ & $248$ & $120$ & $38$ & $14$ & $4$ & $3$ & $2$ \\ |
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\hline |
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Electron MC & $253 \pm 8$ & $126 \pm 5$ & $37 \pm 3$ & $12 \pm 2$ \\ |
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Electron Data & $286$ & $135$ & $39$ & $15$ \\ |
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e Data/MC SF & $1.06 \pm 0.06$ & $1.04 \pm 0.07$ & $0.93 \pm 0.09$ & $0.89 \pm 0.16$ & $0.86 \pm 0.25$ & $0.52 \pm 0.28$ & $0.54 \pm 0.35$ & $0.76 \pm 0.60$ \\ |
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\hline |
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Electron Data/MC SF & $1.13 \pm 0.08$ & $1.07 \pm 0.10$ & $1.07 \pm 0.19$ & $1.21 \pm 0.35$ \\ |
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\hline |
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\end{tabular} |
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$\mu$+e MC & $894 \pm 12$ & $538 \pm 10$ & $284 \pm 8$ & $92 \pm 4$ & $35 \pm 3$ & $15 \pm 2$ & $9 \pm 2$ & $4 \pm 1$ \\ |
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$\mu$+e Data & $941$ & $559$ & $287$ & $95$ & $26$ & $8$ & $5$ & $3$ \\ |
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\hline |
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$\mu$+e Data/MC SF & $1.05 \pm 0.04$ & $1.04 \pm 0.05$ & $1.01 \pm 0.07$ & $1.04 \pm 0.12$ & $0.74 \pm 0.16$ & $0.53 \pm 0.20$ & $0.58 \pm 0.29$ & $0.69 \pm 0.43$ \\ |
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\hline |
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\end{tabular}} |
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\caption{ Yields in \mt\ tail comparing the MC prediction (after |
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applying SFs) to data. The uncertainties are statistical only. |
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\label{tab:cr5yields}} |
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|
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\begin{figure}[hbt] |
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\begin{center} |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met50_leadmuo_nj4.pdf}% |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met50_leadele_nj4.pdf} |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met150_leadmuo_nj4.pdf}% |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met150_leadele_nj4.pdf} |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met200_leadmuo_nj4.pdf}% |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met200_leadele_nj4.pdf} |
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% \includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadmuo_nj4.pdf}% |
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% \includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadele_nj4.pdf} |
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\caption{ |
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Comparison of the \mt\ distribution in data vs. MC for events |
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with a leading muon (left) and leading electron (right) |
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satisfying the requirements of CR5. The \met\ requirements used are |
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50 GeV (top), 150 GeV (middle) and 200 GeV (bottom). |
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\label{fig:cr5mtrest} |
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} |
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\end{center} |
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\end{figure} |
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|
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|
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\begin{figure}[hbt] |
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\begin{center} |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadmuo_nj4.pdf}% |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadele_nj4.pdf} |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met300_leadmuo_nj4.pdf}% |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met300_leadele_nj4.pdf} |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met350_leadmuo_nj4.pdf}% |
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met350_leadele_nj4.pdf} |
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% \includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadmuo_nj4.pdf}% |
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% \includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadele_nj4.pdf} |
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\caption{ |
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Comparison of the \mt\ distribution in data vs. MC for events |
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with a leading muon (left) and leading electron (right) |
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satisfying the requirements of CR5. The \met\ requirements used are |
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150 GeV (top), 200 GeV (middle) and 250 GeV (bottom). |
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\label{fig:cr5mtrest} |
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250 GeV (top), 300 GeV (middle) and 350 GeV (bottom). |
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\label{fig:cr5mtrest2} |
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} |
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\end{center} |
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\end{figure} |
