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claudioc |
1.1 |
\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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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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the CR4 selection. Also, this test is somewhat sensitive to
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the simulation of the track isolation requirement, since the
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number of dilepton events in CR5 depends on the (in)efficiency
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of that cut.
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In CR5 there is also a significant component
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of $t\bar{t} \to \ell +$ jets, where one of the jets fluctuates
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to an isolated track. This component dominates at low $M_T$
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and is not necessarily well reproduced quantitatively by the
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simulation. This makes the normalization of the top MC a little bit tricky.
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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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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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These normalization factors are summarized in Table~\ref{tab:cr5mtsf}.
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The underlying \met\ and $M_T$ distributions are shown in
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burkett |
1.2 |
Figures~\ref{fig:cr5met} and~\ref{fig:cr5mtrest}. The data-MC agreement
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claudioc |
1.1 |
is quite good. Quantitatively, this is also shown in Table~\ref{tab:cr5yields}.
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\begin{table}[!h]
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\begin{center}
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vimartin |
1.3 |
{\footnotesize
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\begin{tabular}{l||c||c|c|c|c|c}
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claudioc |
1.1 |
\hline
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vimartin |
1.3 |
Sample & CR5PRESEL & CR5A & CR5B & CR5C & CR5D & CR5E\\
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claudioc |
1.1 |
\hline
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\hline
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vimartin |
1.4 |
Muon pre-veto \mt-SF & $1.05 \pm 0.01$ & $1.02 \pm 0.01$ & $0.96 \pm 0.03$ & $0.94 \pm 0.05$ & $0.97 \pm 0.08$ & $1.01 \pm 0.12$ \\
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Muon post-veto \mt-SF & $1.27 \pm 0.03$ & $1.18 \pm 0.06$ & $1.10 \pm 0.11$ & $0.96 \pm 0.19$ & $0.84 \pm 0.30$ & $0.96 \pm 0.53$ \\
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claudioc |
1.1 |
\hline
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\hline
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vimartin |
1.4 |
Electron pre-veto \mt-SF & $1.04 \pm 0.01$ & $0.97 \pm 0.02$ & $0.93 \pm 0.03$ & $0.92 \pm 0.05$ & $0.75 \pm 0.08$ & $0.69 \pm 0.11$ \\
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Electron post-veto \mt-SF & $1.22 \pm 0.04$ & $1.11 \pm 0.06$ & $1.10 \pm 0.12$ & $1.03 \pm 0.24$ & $1.60 \pm 0.47$ & $1.34 \pm 0.71$ \\
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claudioc |
1.1 |
\hline
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vimartin |
1.3 |
\end{tabular}}
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claudioc |
1.1 |
\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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The uncertainties are statistical only.
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\label{tab:cr5mtsf}}
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\end{center}
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\end{table}
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\begin{table}[!h]
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\begin{center}
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vimartin |
1.3 |
{\footnotesize
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\begin{tabular}{l||c||c|c|c|c|c}
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claudioc |
1.1 |
\hline
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vimartin |
1.3 |
Sample & CR5PRESEL & CR5A & CR5B & CR5C & CR5D & CR5E\\
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claudioc |
1.1 |
\hline
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\hline
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vimartin |
1.4 |
Muon MC & $494 \pm 8$ & $301 \pm 6$ & $157 \pm 4$ & $51 \pm 2$ & $19 \pm 1$ & $8 \pm 1$ \\
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vimartin |
1.3 |
Muon Data & $514$ & $311$ & $167$ & $57$ & $12$ & $4$ \\
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claudioc |
1.1 |
\hline
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vimartin |
1.4 |
Muon Data/MC SF & $1.04 \pm 0.05$ & $1.03 \pm 0.06$ & $1.06 \pm 0.09$ & $1.12 \pm 0.16$ & $0.65 \pm 0.19$ & $0.53 \pm 0.27$ \\
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claudioc |
1.1 |
\hline
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\hline
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vimartin |
1.4 |
Electron MC & $413 \pm 7$ & $243 \pm 5$ & $127 \pm 4$ & $42 \pm 2$ & $15 \pm 1$ & $7 \pm 1$ \\
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vimartin |
1.3 |
Electron Data & $427$ & $248$ & $120$ & $38$ & $14$ & $4$ \\
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claudioc |
1.1 |
\hline
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vimartin |
1.4 |
Electron Data/MC SF & $1.03 \pm 0.05$ & $1.02 \pm 0.07$ & $0.94 \pm 0.09$ & $0.91 \pm 0.16$ & $0.96 \pm 0.27$ & $0.60 \pm 0.31$ \\
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claudioc |
1.1 |
\hline
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vimartin |
1.3 |
\end{tabular}}
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claudioc |
1.1 |
\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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\end{center}
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\end{table}
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\begin{figure}[hbt]
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\begin{center}
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/met_met50_leadmuo_nj4.pdf}%
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/met_met50_leadele_nj4.pdf}
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met100_leadmuo_nj4.pdf}%
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\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met100_leadele_nj4.pdf}
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\caption{
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Comparison of the \met\ (top) and \mt\ for $\met>100$ (bottom) distributions 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.
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\label{fig:cr5met}
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}
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\end{center}
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\end{figure}
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\begin{figure}[hbt]
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\begin{center}
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vimartin |
1.3 |
\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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claudioc |
1.1 |
\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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vimartin |
1.3 |
% \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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claudioc |
1.1 |
\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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vimartin |
1.3 |
50 GeV (top), 150 GeV (middle) and 200 GeV (bottom).
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claudioc |
1.1 |
\label{fig:cr5mtrest}
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}
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\end{center}
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\end{figure}
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\clearpage
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