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\label{sec:yields} |
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|
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In this section we compare the data and MC samples passing the selection described in Sec.~\ref{sec:eventSelection} |
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In the following, the MC is reweighted to match the data distribution of number of reconstructed primary vertices. |
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In the following, the MC is reweighted to match the data distribution of number of reconstructed primary vertices. |
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%{\bf FIXME: UPDATE TO 5.1/fb VTX-REWEIGHTING, CURRENTLY USING OUTDATED FUNCTION}. |
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The trigger efficiencies of Sec.~\ref{sec:datasets} are applied. In all plots, the last bin contains the overflow. |
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|
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We begin by counting the inclusive Z yields. Here we require the presence of two selected leptons without |
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\caption{ |
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\label{fig:dilmass}\protect |
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Dilepton mass distribution for events with two selected leptons |
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in the $ee$ (left) and $\mu\mu$ (right) final states.} |
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in the ee (left) and $\mu\mu$ (right) final states.} |
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\end{center} |
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\end{figure} |
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|
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single top & 70.9 $\pm$ 4.9 & 103.3 $\pm$ 5.7 & 172.5 $\pm$ 7.4 & 346.7 $\pm$ 10.5 \\ |
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\hline |
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total SM MC & 1152954.5 $\pm$ 4886.1 & 1701399.6 $\pm$ 5680.3 &2756.1 $\pm$ 70.8 & 2857110.2 $\pm$ 7493.0 \\ |
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\hline |
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data & 1162229 & 1774353 & 3077 & 2939659 \\ |
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– |
|
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– |
|
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\hline |
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\hline |
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|
\end{tabular} |
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|
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\clearpage |
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|
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We next define the preselection region using the following requirements: |
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We next define the preselection region for the inclusive search using the following requirements: |
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\begin{itemize} |
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\item Number of jets $\geq$ 2 |
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\item Same flavor dileptons (opposite flavor yields will be shown since they are used in data for the FS background estimation) |
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\item Dilepton invariant mass $81<m_{\ell\ell}<101$ GeV |
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\item Number of jets $\geq$ 2; |
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\item Same flavor dileptons (opposite flavor yields will be shown since they are used in data for the FS background estimation); |
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\item Dilepton invariant mass $81<m_{\ell\ell}<101$ GeV. |
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\end{itemize} |
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|
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The dilepton mass distributions in the preselection region (without the dilepton mass requirement applied) for the $ee$ and $\mu\mu$ |
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final states are shown in Figure~\ref{fig:dilmass_2j}. In Table~\ref{table:zyields_2j} the data and MC yields in the preselection |
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The dilepton mass distributions in the preselection region of the inclusive search (without the dilepton mass requirement applied) |
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for the ee and $\mu\mu$ final states are shown in Figure~\ref{fig:dilmass_2j}. In Table~\ref{table:zyields_2j} the data and MC yields in the preselection |
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region are indicated. Good data vs. MC agreement is observed. |
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|
| 65 |
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|
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\includegraphics[width=1.0\linewidth]{plots/dilmass_ee_mm_2j.pdf} |
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\caption{ |
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\label{fig:dilmass_2j}\protect |
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Dilepton mass distribution for events in the preselection region |
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in the $ee$ (left) and $\mu\mu$ (right) final states.} |
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Dilepton mass distribution for events in the preselection region of the inclusive search |
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in the ee (left) and $\mu\mu$ (right) final states.} |
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\end{center} |
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\end{figure} |
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|
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\begin{table}[htb] |
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\begin{center} |
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\caption{\label{table:zyields_2j} Data and MC yields in the preselection region. |
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> |
\caption{\label{table:zyields_2j} Data and MC yields in the preselection region of the inclusive search. |
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} |
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\begin{tabular}{lccccc} |
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\hline |
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single top & 28.8 $\pm$ 3.2 & 38.0 $\pm$ 3.4 & 72.0 $\pm$ 4.9 &138.8 $\pm$ 6.7 \\ |
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\hline |
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total SM MC & 54578.1 $\pm$ 988.7 &79968.3 $\pm$ 1165.9 &1593.3 $\pm$ 26.5 &136139.7 $\pm$ 1528.9 \\ |
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\hline |
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data & 54426 & 80367 & 1565 & 136358 \\ |
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|
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\hline |
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|
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\clearpage |
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|
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+ |
We next define the preselection region for the targeted search by adding the following requirements: |
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\begin{itemize} |
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\item Veto events containing a b-tagged jet; |
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\item Dijet invariant mass $70<m_{jj}<110$ GeV; |
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\item Veto events containing a third selected lepton (electron or muon) with \pt $>$ 20 GeV; %{\bf FIXME: lower third lepton \pt threshold to 10 GeV}. |
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\end{itemize} |
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|
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The rejection of events with a b-tagged jet strongly suppresses the \ttbar\ background, which is the dominant background in the inclusive search |
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after requiring large \MET. The requirement that the jet pair is consistent with originating from W/Z decay is motivated by the fact that we are |
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searching for signatures producing V(jj)Z($\ell\ell$)+\MET; this requirement suppresses the \zjets\ and \ttbar\ backgrounds. The veto of events |
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containting a third electron or muon suppresses the WZ background, and also serves to make this analyis exclusive with respect to searches in |
| 115 |
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the trilepton final state. |
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+ |
|
| 117 |
+ |
The dilepton mass distributions in the preselection region of the targeted search (without the dilepton mass requirement applied) |
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for the ee and $\mu\mu$ final states are shown in Figure~\ref{fig:dilmass_2j_targeted}. In Table~\ref{table:zyields_2j_targeted} |
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the data and MC yields in the preselection region are indicated. Good data vs. MC agreement is observed. |
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We also show the distribution of dijet mass in the targeted preselection (with the requirement on this quantity removed) in Fig.~\ref{fig:mjj}, |
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which demonstrates that the MC does a reasonable job of modeling this quantity. |
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|
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< |
|
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< |
|
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|
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|
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|
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|
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< |
|
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\begin{comment} |
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|
| 118 |
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The data yields and the MC predictions are given in Table~\ref{preselyieldtable}. |
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%Dilepton mass and MET distributions for \emu ~events are shown in appendix \ref{app:emu}. |
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|
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As anticipated, the MC predicts that the preselection is dominated by Z+jets in the same-flavor |
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case and by \ttbar\ in the opposite-flavor case. |
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%The data yield is in reasonable agreement with the predictions for the $ee$, $\mu\mu$ and $e\mu$ channels. |
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|
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\begin{comment} |
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|
| 127 |
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We also show the %LO |
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next-to-leading order (NLO) |
| 129 |
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yields for the LM4 and LM8 processes, which are benchmark |
| 130 |
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SUSY processes in which $Z$ bosons are produced via cascade decays of SUSY particles. |
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|
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\begin{figure}[hbt] |
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\begin{center} |
| 125 |
> |
\includegraphics[width=1.0\linewidth]{plots/dilmass_ee_mm_2j_targeted.pdf} |
| 126 |
> |
\caption{ |
| 127 |
> |
\label{fig:dilmass_2j_targeted}\protect |
| 128 |
> |
Dilepton mass distribution for events in the preselection region of the targeted search |
| 129 |
> |
in the ee (left) and $\mu\mu$ (right) final states.} |
| 130 |
> |
\end{center} |
| 131 |
> |
\end{figure} |
| 132 |
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|
| 133 |
|
\begin{table}[htb] |
| 134 |
|
\begin{center} |
| 135 |
< |
\caption{\label{preselyieldtable} Data and Monte Carlo yields for the preselection with \njets\ $\ge$ 2 for \lumi. |
| 136 |
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%The NLO yields for the SUSY benchmark processes LM4 and LM8 are also shown. |
| 135 |
> |
\caption{\label{table:zyields_2j_targeted} Data and MC yields in the preselection region of the inclusive search. |
| 136 |
|
} |
| 137 |
|
\begin{tabular}{lccccc} |
| 138 |
|
\hline |
| 140 |
– |
Sample & $ee$ & $\mu\mu$ & $e\mu$ & tot \\ |
| 139 |
|
\hline |
| 140 |
< |
|
| 143 |
< |
WJets & 10.8 $\pm$ 4.4 & 0.0 $\pm$ 0.0 & 8.5 $\pm$ 3.8 & 19.3 $\pm$ 5.8 \\ |
| 144 |
< |
WW & 14.8 $\pm$ 0.5 & 17.2 $\pm$ 0.5 & 32.9 $\pm$ 0.8 & 64.9 $\pm$ 1.1 \\ |
| 145 |
< |
WZ & 405.7 $\pm$ 1.8 & 411.7 $\pm$ 1.7 & 5.0 $\pm$ 0.1 & 822.4 $\pm$ 2.5 \\ |
| 146 |
< |
ZZ & 313.3 $\pm$ 1.2 & 349.1 $\pm$ 1.2 & 0.8 $\pm$ 0.0 & 663.2 $\pm$ 1.6 \\ |
| 147 |
< |
Single Top & 29.3 $\pm$ 1.2 & 26.1 $\pm$ 1.0 & 50.8 $\pm$ 1.5 & 106.2 $\pm$ 2.1 \\ |
| 148 |
< |
\ttbar & 523.2 $\pm$ 2.6 & 529.0 $\pm$ 2.5 & 1056.7 $\pm$ 3.6 & 2108.8 $\pm$ 5.1 \\ |
| 149 |
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Z+Jets & 51051.4 $\pm$ 147.5 & 53149.1 $\pm$ 143.0 & 16.2 $\pm$ 2.6 & 104216.8 $\pm$ 205.4 \\ |
| 140 |
> |
Sample & ee & $\mu\mu$ & e$\mu$ & total \\ |
| 141 |
|
\hline |
| 142 |
< |
Total MC & 52348.5 $\pm$ 147.6 & 54482.2 $\pm$ 143.0 & 1171.0 $\pm$ 6.1 & 108001.6 $\pm$ 205.6 \\ |
| 142 |
> |
\zjets &14108.9 $\pm$ 486.3 &21927.1 $\pm$ 606.4 & 0.0 $\pm$ 0.0 &36036.0 $\pm$ 777.4 \\ |
| 143 |
> |
\ttbar & 21.0 $\pm$ 2.9 & 33.4 $\pm$ 3.9 & 53.7 $\pm$ 5.0 &108.0 $\pm$ 6.9 \\ |
| 144 |
> |
WZ &135.6 $\pm$ 1.4 &188.5 $\pm$ 1.6 & 1.0 $\pm$ 0.1 &325.1 $\pm$ 2.1 \\ |
| 145 |
> |
ZZ &106.0 $\pm$ 1.0 &148.8 $\pm$ 1.2 & 0.1 $\pm$ 0.0 &254.9 $\pm$ 1.5 \\ |
| 146 |
> |
WW & 3.4 $\pm$ 0.4 & 4.1 $\pm$ 0.4 & 7.8 $\pm$ 0.5 & 15.2 $\pm$ 0.7 \\ |
| 147 |
> |
single top & 2.0 $\pm$ 0.8 & 2.8 $\pm$ 1.1 & 5.5 $\pm$ 1.4 & 10.3 $\pm$ 1.9 \\ |
| 148 |
> |
\hline |
| 149 |
> |
total SM MC &14376.9 $\pm$ 486.3 &22304.7 $\pm$ 606.5 & 68.0 $\pm$ 5.2 &36749.6 $\pm$ 777.4 \\ |
| 150 |
> |
data & 14647 & 21840 & 74 & 36561 \\ |
| 151 |
|
\hline |
| 153 |
– |
Data & 49214 & 52757 & 1256 & 103227 \\ |
| 152 |
|
\hline |
| 155 |
– |
|
| 156 |
– |
|
| 153 |
|
\end{tabular} |
| 154 |
|
\end{center} |
| 155 |
|
\end{table} |
| 156 |
|
|
| 157 |
< |
\end{comment} |
| 157 |
> |
|
| 158 |
> |
\clearpage |
| 159 |
> |
|
| 160 |
> |
\begin{figure}[hbt] |
| 161 |
> |
\begin{center} |
| 162 |
> |
\includegraphics[width=1.0\linewidth]{plots/mjj.pdf} |
| 163 |
> |
\caption{ |
| 164 |
> |
\label{fig:mjj}\protect |
| 165 |
> |
Distributions of dijet mass for the targeted preselection in the ee (left), $\mu\mu$ (middle) and e$\mu$ (right) final state.} |
| 166 |
> |
\end{center} |
| 167 |
> |
\end{figure} |
| 168 |
> |
|
| 169 |
> |
|
| 170 |
> |
|
| 171 |
> |
|
| 172 |
> |
|
