| 1 |
\subsection{Test of control region with isolated track in CR5}
|
| 2 |
\label{sec:CR5}
|
| 3 |
|
| 4 |
This CR consists of events that pass all cuts but fail the isolated
|
| 5 |
track veto cut. These events (especially in the tail of $M_T$) are
|
| 6 |
predominantly $t\bar{t}$ dileptons. Thus the test in this control
|
| 7 |
region is similar to that performed in CR4 and described
|
| 8 |
in Section~\ref{sec:CR4-valid}. There is some non-trivial
|
| 9 |
complementarity because CR5 also includes events with
|
| 10 |
taus and events with electrons or muons below the threshold of
|
| 11 |
the CR4 selection. Also, this test is somewhat sensitive to
|
| 12 |
the simulation of the track isolation requirement, since the
|
| 13 |
number of dilepton events in CR5 depends on the (in)efficiency
|
| 14 |
of that cut.
|
| 15 |
|
| 16 |
|
| 17 |
|
| 18 |
In CR5 there is also a significant component
|
| 19 |
of $t\bar{t} \to \ell +$ jets, where one of the jets fluctuates
|
| 20 |
to an isolated track. This component dominates at low $M_T$
|
| 21 |
and is not necessarily well reproduced quantitatively by the
|
| 22 |
simulation. This makes the normalization of the top MC a little bit tricky.
|
| 23 |
We define a ``pre-veto'' sample as the sample of events that pass
|
| 24 |
all cuts without any isolated track requirements. This sample is
|
| 25 |
dominated by $t\bar{t} \to \ell +$ jets. We normalize the dilepton
|
| 26 |
component of the top MC to that sample. This is done by normalizing
|
| 27 |
the total \ttbar\ MC to the $M_T$ peak region, $50 < M_T < 80$ GeV
|
| 28 |
in this sample.
|
| 29 |
|
| 30 |
|
| 31 |
Next we define a ``post-veto'' sample as the events that have an
|
| 32 |
isolated track
|
| 33 |
(note that we use the term ``post-veto'' to refer to the application of the isolated track cut of the sample, which in this case is an isolated track requirement).
|
| 34 |
The $t\bar{t} \to \ell +$ jets component is
|
| 35 |
normalized in this sample, again by normalizing to the $M_T$ peak
|
| 36 |
region.
|
| 37 |
These normalization factors are summarized in Table~\ref{tab:cr5mtsf}.
|
| 38 |
|
| 39 |
The post-veto $\ttdl$ is taken from MC, but with scale factor obtained
|
| 40 |
by the normalization of the ``pre-veto'' sample.
|
| 41 |
|
| 42 |
The underlying \met\ and $M_T$ distributions are shown in
|
| 43 |
Figures~\ref{fig:cr5met} and~\ref{fig:cr5mtrest}. The data-MC agreement
|
| 44 |
is quite good. Quantitatively, this is also shown in Table~\ref{tab:cr5yields}.
|
| 45 |
This is the second key test of the \ttdl\ modeling
|
| 46 |
|
| 47 |
\begin{table}[!h]
|
| 48 |
\begin{center}
|
| 49 |
{\footnotesize
|
| 50 |
\begin{tabular}{l||c||c|c|c|c|c|c|c}
|
| 51 |
\hline
|
| 52 |
Sample & CR5PRESEL & CR5A & CR5B & CR5C & CR5D & CR5E &
|
| 53 |
CR5F & CR5G \\
|
| 54 |
\hline
|
| 55 |
\hline
|
| 56 |
$\mu$ pre-veto \mt-SF & $1.05 \pm 0.01$ & $1.02 \pm 0.02$ & $0.95 \pm 0.03$ & $0.90 \pm 0.05$ & $0.98 \pm 0.08$ & $0.97 \pm 0.13$ & $0.85 \pm 0.18$ & $0.92 \pm 0.31$ \\
|
| 57 |
$\mu$ post-veto \mt-SF & $1.25 \pm 0.04$ & $1.17 \pm 0.07$ & $1.05 \pm 0.12$ & $0.85 \pm 0.19$ & $0.84 \pm 0.30$ & $1.07 \pm 0.54$ & $1.38 \pm 1.14$ & $0.68 \pm 2.05$ \\
|
| 58 |
\hline
|
| 59 |
\hline
|
| 60 |
e pre-veto \mt-SF & $1.01 \pm 0.01$ & $0.95 \pm 0.02$ & $0.95 \pm 0.03$ & $0.94 \pm 0.06$ & $0.85 \pm 0.09$ & $0.84 \pm 0.13$ & $1.05 \pm 0.23$ & $1.04 \pm 0.33$ \\
|
| 61 |
e post-veto \mt-SF & $1.21 \pm 0.04$ & $1.12 \pm 0.07$ & $1.25 \pm 0.14$ & $1.17 \pm 0.27$ & $2.01 \pm 0.64$ & $1.71 \pm 0.99$ & $2.79 \pm 2.04$ & $0.81 \pm 1.58$ \\
|
| 62 |
\hline
|
| 63 |
\end{tabular}}
|
| 64 |
\caption{ \mt\ peak Data/MC scale factors. The pre-veto SFs are applied to the
|
| 65 |
\ttdl\ sample, while the post-veto SFs are applied to the single
|
| 66 |
lepton samples. The raw MC is used for backgrounds from rare processes.
|
| 67 |
The uncertainties are statistical only.
|
| 68 |
\label{tab:cr5mtsf}}
|
| 69 |
\end{center}
|
| 70 |
\end{table}
|
| 71 |
|
| 72 |
|
| 73 |
\begin{table}[!h]
|
| 74 |
\begin{center}
|
| 75 |
{\footnotesize
|
| 76 |
\begin{tabular}{l||c||c|c|c|c|c|c|c}
|
| 77 |
\hline
|
| 78 |
Sample & CR5PRESEL & CR5A & CR5B & CR5C & CR5D & CR5E &
|
| 79 |
CR5F & CR5G \\
|
| 80 |
\hline
|
| 81 |
\hline
|
| 82 |
$\mu$ MC & $490 \pm 9$ & $299 \pm 7$ & $155 \pm 6$ & $49 \pm 3$ & $19 \pm 2$ & $7 \pm 1$ & $3 \pm 1$ & $2 \pm 1$ \\
|
| 83 |
$\mu$ Data & $514$ & $311$ & $167$ & $57$ & $12$ & $4$ & $2$ & $1$ \\
|
| 84 |
\hline
|
| 85 |
$\mu$ Data/MC SF & $1.05 \pm 0.05$ & $1.04 \pm 0.06$ & $1.08 \pm 0.09$ & $1.17 \pm 0.17$ & $0.64 \pm 0.20$ & $0.54 \pm 0.29$ & $0.66 \pm 0.49$ & $0.58 \pm 0.62$ \\
|
| 86 |
\hline
|
| 87 |
\hline
|
| 88 |
e MC & $405 \pm 8$ & $239 \pm 7$ & $130 \pm 5$ & $43 \pm 3$ & $16 \pm 2$ & $8 \pm 1$ & $6 \pm 2$ & $3 \pm 1$ \\
|
| 89 |
e Data & $427$ & $248$ & $120$ & $38$ & $14$ & $4$ & $3$ & $2$ \\
|
| 90 |
\hline
|
| 91 |
e Data/MC SF & $1.06 \pm 0.06$ & $1.04 \pm 0.07$ & $0.93 \pm 0.09$ & $0.89 \pm 0.16$ & $0.86 \pm 0.25$ & $0.52 \pm 0.28$ & $0.54 \pm 0.35$ & $0.76 \pm 0.60$ \\
|
| 92 |
\hline
|
| 93 |
\hline
|
| 94 |
$\mu$+e MC & $894 \pm 12$ & $538 \pm 10$ & $284 \pm 8$ & $92 \pm 4$ & $35 \pm 3$ & $15 \pm 2$ & $9 \pm 2$ & $4 \pm 1$ \\
|
| 95 |
$\mu$+e Data & $941$ & $559$ & $287$ & $95$ & $26$ & $8$ & $5$ & $3$ \\
|
| 96 |
\hline
|
| 97 |
$\mu$+e Data/MC SF & $1.05 \pm 0.04$ & $1.04 \pm 0.05$ & $1.01 \pm 0.07$ & $1.04 \pm 0.12$ & $0.74 \pm 0.16$ & $0.53 \pm 0.20$ & $0.58 \pm 0.29$ & $0.69 \pm 0.43$ \\
|
| 98 |
\hline
|
| 99 |
\end{tabular}}
|
| 100 |
\caption{ Yields in \mt\ tail comparing the MC prediction (after
|
| 101 |
applying SFs) to data. The uncertainties are statistical only.
|
| 102 |
\label{tab:cr5yields}}
|
| 103 |
\end{center}
|
| 104 |
\end{table}
|
| 105 |
|
| 106 |
\begin{figure}[hbt]
|
| 107 |
\begin{center}
|
| 108 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/met_met50_leadmuo_nj4.pdf}%
|
| 109 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/met_met50_leadele_nj4.pdf}
|
| 110 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met100_leadmuo_nj4.pdf}%
|
| 111 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met100_leadele_nj4.pdf}
|
| 112 |
\caption{
|
| 113 |
Comparison of the \met\ (top) and \mt\ for $\met>100$ (bottom) distributions in data vs. MC for events
|
| 114 |
with a leading muon (left) and leading electron (right)
|
| 115 |
satisfying the requirements of CR5.
|
| 116 |
\label{fig:cr5met}
|
| 117 |
}
|
| 118 |
\end{center}
|
| 119 |
\end{figure}
|
| 120 |
|
| 121 |
\begin{figure}[hbt]
|
| 122 |
\begin{center}
|
| 123 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met50_leadmuo_nj4.pdf}%
|
| 124 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met50_leadele_nj4.pdf}
|
| 125 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met150_leadmuo_nj4.pdf}%
|
| 126 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met150_leadele_nj4.pdf}
|
| 127 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met200_leadmuo_nj4.pdf}%
|
| 128 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met200_leadele_nj4.pdf}
|
| 129 |
% \includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadmuo_nj4.pdf}%
|
| 130 |
% \includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadele_nj4.pdf}
|
| 131 |
\caption{
|
| 132 |
Comparison of the \mt\ distribution in data vs. MC for events
|
| 133 |
with a leading muon (left) and leading electron (right)
|
| 134 |
satisfying the requirements of CR5. The \met\ requirements used are
|
| 135 |
50 GeV (top), 150 GeV (middle) and 200 GeV (bottom).
|
| 136 |
\label{fig:cr5mtrest}
|
| 137 |
}
|
| 138 |
\end{center}
|
| 139 |
\end{figure}
|
| 140 |
|
| 141 |
|
| 142 |
\begin{figure}[hbt]
|
| 143 |
\begin{center}
|
| 144 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadmuo_nj4.pdf}%
|
| 145 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadele_nj4.pdf}
|
| 146 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met300_leadmuo_nj4.pdf}%
|
| 147 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met300_leadele_nj4.pdf}
|
| 148 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met350_leadmuo_nj4.pdf}%
|
| 149 |
\includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met350_leadele_nj4.pdf}
|
| 150 |
% \includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadmuo_nj4.pdf}%
|
| 151 |
% \includegraphics[width=0.5\linewidth]{plots/CR5plots/mt_met250_leadele_nj4.pdf}
|
| 152 |
\caption{
|
| 153 |
Comparison of the \mt\ distribution in data vs. MC for events
|
| 154 |
with a leading muon (left) and leading electron (right)
|
| 155 |
satisfying the requirements of CR5. The \met\ requirements used are
|
| 156 |
250 GeV (top), 300 GeV (middle) and 350 GeV (bottom).
|
| 157 |
\label{fig:cr5mtrest2}
|
| 158 |
}
|
| 159 |
\end{center}
|
| 160 |
\end{figure}
|
| 161 |
|
| 162 |
|
| 163 |
\clearpage
|
| 164 |
|
