| 1 |
+ |
Here we define the selections of leptons, jets, and \met. |
| 2 |
+ |
We also describe our measurements of the lepton and trigger efficiency. |
| 3 |
+ |
The analysis uses several different Control Regions (CRs) in addition |
| 4 |
+ |
to the Signal |
| 5 |
+ |
Regions (SRs). |
| 6 |
+ |
All of these different regions are defined in this section. |
| 7 |
+ |
This section also includes some information on the basic MC |
| 8 |
+ |
corrections that we apply. |
| 9 |
+ |
%Figure~\ref{fig:venndiagram} illustrates the relationship between these regions. |
| 10 |
|
|
| 11 |
+ |
\subsection{Single Lepton Selection} |
| 12 |
+ |
\label{sec:singlelepselection} |
| 13 |
|
|
| 14 |
< |
The preselection sample is based on the following criteria |
| 14 |
> |
The single lepton selection is based on the following criteria, starting from the requirements described |
| 15 |
> |
on \url{https://twiki.cern.ch/twiki/bin/viewauth/CMS/SUSYstop#SINGLE_LEPTON_CHANNEL} (revision r20) |
| 16 |
|
\begin{itemize} |
| 17 |
|
\item satisfy the trigger requirement (see |
| 18 |
< |
Table.~\ref{tab:DatasetsData}) |
| 18 |
> |
Table~\ref{tab:TrigData}). |
| 19 |
> |
Note that the analysis triggers are inclusive single lepton triggers. |
| 20 |
> |
Dilepton triggers are used only for the dilepton control region. |
| 21 |
|
\item select events with one high \pt\ electron or muon, requiring |
| 22 |
|
\begin{itemize} |
| 23 |
< |
\item $\pt>30~\GeVc$ and $|\eta|<2.5(2.1)$ for \E(\M) |
| 24 |
< |
\item satisfy the identification and isolation requirements detailed |
| 25 |
< |
in the same-sign SUSY analysis (SUS-11-010) for electrons and the opposite-sign |
| 26 |
< |
SUSY analysis (SUS-11-011) for muons |
| 23 |
> |
\item $\pt>30~\GeVc$ and $|\eta|<1.4442 (2.1)$ for electrons (muons). The restriction to the barrel for electrons |
| 24 |
> |
is motivated by an observed excess of events with large \mt\ with endcap electrons in the b-veto control region, |
| 25 |
> |
and does not significantly reduce the signal acceptance since the leptons tend to be central. |
| 26 |
> |
\item muon ID criteria is based on the 2012 POG recommended tight working point |
| 27 |
> |
\item electron ID critera is based on the 2012 POG recommended medium working point |
| 28 |
> |
\item PF-based isolation ($\Delta R < 0.3$) relative isolation $<$ 0.15 and absolute isolation $<$ 5~GeV. PU corrections |
| 29 |
> |
are performed with the $\Delta\beta$ scheme for muons and effective-area fastjet rho scheme for electrons (as recommended by the relevant POGs). |
| 30 |
> |
\item $|\pt(\rm{PF}_{lep}) - \pt(\rm{RECO}_{lep})| < 10~\GeV$ |
| 31 |
> |
\item $E/p_{\rm{in}} < 4$ (electrons only) |
| 32 |
> |
\item We remove electron events with $\met > 50$ GeV and $M_T > 100$ |
| 33 |
> |
GeV with at least one crystal in the supercluster with laser |
| 34 |
> |
correction $>$2.\footnote{This is an ad-hoc removal based on |
| 35 |
> |
run-event numbers, since the |
| 36 |
> |
problem was found very recently and the filter was not available |
| 37 |
> |
when we processed the events.} |
| 38 |
|
\end{itemize} |
| 39 |
|
\item require at least 4 PF jets in the event with $\pt>30~\GeV$ |
| 40 |
< |
within $|\eta|<2.5$, out of which at least 1 is b-tagged based on |
| 41 |
< |
the SSV medium working point. |
| 42 |
< |
\item require moderate $\met>50~\GeV$ |
| 40 |
> |
within $|\eta|<2.5$ out of which at least 1 satisfies the CSV |
| 41 |
> |
medium working point b-tagging requirement |
| 42 |
> |
\item require moderate $\met>50~\GeV$ (type1-corrected pfmet with $\phi$ corrections applied as described in Sec.~\ref{sec:JetMet}). |
| 43 |
> |
\item Isolated track veto, see Section~\ref{sec:tkveto} |
| 44 |
> |
|
| 45 |
|
\end{itemize} |
| 46 |
|
|
| 47 |
< |
Currently, we focus on the muon channel because it is cleaner (the QCD contribution is negligible) |
| 48 |
< |
and the triggers are simpler (we use single muon triggers, as opposed to electron + 3-jet triggers). |
| 49 |
< |
We will add the electron channel, time permitting. However, since this is a systematics-dominated |
| 50 |
< |
analysis, increasing the statistics by adding the electrons is not expected to significantly improve |
| 51 |
< |
the sensitivity, especialy because the electron selection efficiency is smaller and the systematic |
| 52 |
< |
uncertainty associated with the QCD background is larger. |
| 47 |
> |
%Table~\ref{tab:preselectionyield} shows the yields in data and MC without any corrections for this preselection region. |
| 48 |
> |
|
| 49 |
> |
%\begin{table}[!h] |
| 50 |
> |
%\begin{center} |
| 51 |
> |
%\begin{tabular}{c|c} |
| 52 |
> |
%\hline |
| 53 |
> |
%\hline |
| 54 |
> |
%\end{tabular} |
| 55 |
> |
%\caption{ Raw Data and MC predictions without any corrections are shown after preselection. \label{tab:preselectionyield}} |
| 56 |
> |
%\end{center} |
| 57 |
> |
%\end{table} |
| 58 |
> |
|
| 59 |
> |
\subsection{Isolated track veto} |
| 60 |
> |
\label{sec:tkveto} |
| 61 |
> |
|
| 62 |
> |
The isolated track veto is intended to remove top dilepton events. |
| 63 |
> |
Looking for an isolated track is an effective way of identifying $W |
| 64 |
> |
\to e$, $W \to \mu$, $W \to \tau \to \ell$, and $W \to \tau \to |
| 65 |
> |
h^{\pm} + n\pi^{0}$. The requirements on the track are |
| 66 |
|
|
| 27 |
– |
A benchmark signal region is selected by tightening the \met\ and |
| 28 |
– |
adding an \mt\ requirement |
| 67 |
|
\begin{itemize} |
| 68 |
< |
\item $\met>100~\GeV$ |
| 69 |
< |
\item $\mt>150~\GeV$ |
| 68 |
> |
\item $P_T > 10$ GeV |
| 69 |
> |
\item Relative track isolation $< 10\%$ computed from charged PF |
| 70 |
> |
candidates with dZ $<$ 0.05 cm from the primary vertex. |
| 71 |
|
\end{itemize} |
| 72 |
|
|
| 34 |
– |
{\bf We have not looked at the data in the signal region after the first 1 fb$^{-1}$ of data.} |
| 73 |
|
|
| 74 |
< |
\subsection{Corrections to Jets and \met} |
| 74 |
> |
\subsection{Signal Region Selection} |
| 75 |
> |
\label{sec:SR} |
| 76 |
|
|
| 77 |
< |
The official recommendations from the Jet/MET group are used for |
| 78 |
< |
the data and MC samples. In particular, the jet |
| 79 |
< |
energy corrections (JEC) are updated using the official recipe. |
| 80 |
< |
L1FastL2L3Residual (L1FastL2L3) corrections are applied for data (MC), |
| 42 |
< |
based on the global tags GR\_R\_42\_V23 (DESIGN42\_V17) for |
| 43 |
< |
data (MC). In addition, these jet energy corrections are propagated to |
| 44 |
< |
the \met\ calculation, following the official prescription for |
| 45 |
< |
deriving the Type I corrections. It may be noted that events with |
| 46 |
< |
anomalous ``rho'' pile-up corrections are excluded from the sample since these |
| 47 |
< |
correspond to events with unphysically large \met\ and \mt\ tail |
| 48 |
< |
signal region (see Figure~\ref{fig:mtrhocomp}). An additional correction to remove |
| 49 |
< |
the $\phi$-modulation observed in the \met\ is included, improving |
| 50 |
< |
the agreement between the data and the MC, as shown in |
| 51 |
< |
Figure~\ref{fig:metphicomp}. This correction has an effect on this analysis, |
| 52 |
< |
since the azimuthal angle enters the \mt\ distribution. |
| 77 |
> |
The signal regions (SRs) are selected to improve the sensitivity for the |
| 78 |
> |
single lepton requirements and cover a range of scalar top |
| 79 |
> |
scenarios. The \mt\ and \met\ variables are used to define the signal |
| 80 |
> |
regions and the requirements are listed in Table~\ref{tab:srdef}. |
| 81 |
|
|
| 82 |
< |
\clearpage |
| 82 |
> |
\begin{table}[!h] |
| 83 |
> |
\begin{center} |
| 84 |
> |
\begin{tabular}{l|c|c} |
| 85 |
> |
\hline |
| 86 |
> |
Signal Region & Minimum \mt\ [GeV] & Minimum \met\ [GeV] \\ |
| 87 |
> |
\hline |
| 88 |
> |
\hline |
| 89 |
> |
SRA & 150 & 100 \\ |
| 90 |
> |
SRB & 120 & 150 \\ |
| 91 |
> |
SRC & 120 & 200 \\ |
| 92 |
> |
SRD & 120 & 250 \\ |
| 93 |
> |
SRE & 120 & 300 \\ |
| 94 |
> |
SRF & 120 & 350 \\ |
| 95 |
> |
SRG & 120 & 400 \\ |
| 96 |
> |
\hline |
| 97 |
> |
\end{tabular} |
| 98 |
> |
\caption{ Signal region definitions based on \mt\ and \met\ |
| 99 |
> |
requirements. These requirements are applied in addition to the |
| 100 |
> |
baseline single lepton selection. |
| 101 |
> |
\label{tab:srdef}} |
| 102 |
> |
\end{center} |
| 103 |
> |
\end{table} |
| 104 |
|
|
| 105 |
< |
\begin{figure}[!ht] |
| 106 |
< |
\begin{center} |
| 107 |
< |
\includegraphics[width=0.5\linewidth]{plots/mt_rho_comp.png} |
| 108 |
< |
\caption{ \label{fig:mtrhocomp}%\protect |
| 109 |
< |
Comparison of the \mt\ distribution for events with |
| 110 |
< |
unphysical energy corrections ($\rho <0$ or $ \rho > 40$, where $\rho$ is a |
| 62 |
< |
measure of the average pileup energy density) and the |
| 63 |
< |
nominal sample. Events with large pileup corrections |
| 64 |
< |
correspond to noisy events. Since this correction is applied |
| 65 |
< |
to the jets and propagated to the \met, these events have |
| 66 |
< |
anomalously large \met\ and populate the \mt\ tail. These |
| 67 |
< |
pathological events are excluded from the analysis sample.} |
| 68 |
< |
\end{center} |
| 69 |
< |
\end{figure} |
| 105 |
> |
Table~\ref{tab:srrawmcyields} shows the expected number of SM |
| 106 |
> |
background yields for the SRs. A few stop signal yields for four |
| 107 |
> |
values of the parameters are also shown for comparison. The signal |
| 108 |
> |
regions with looser requirements are sensitive to lower stop masses |
| 109 |
> |
M(\sctop), while those with tighter requirements are more sensitive to |
| 110 |
> |
higher M(\sctop). |
| 111 |
|
|
| 112 |
< |
\begin{figure}[!hb] |
| 113 |
< |
\begin{center} |
| 114 |
< |
\includegraphics[width=0.5\linewidth]{plots/metphi.pdf}% |
| 115 |
< |
\includegraphics[width=0.5\linewidth]{plots/metphi_phicorr.pdf} |
| 116 |
< |
\caption{ \label{fig:metphicomp}%\protect |
| 117 |
< |
The PF \met\ $\phi$ distribution (left) exhibits a |
| 118 |
< |
modulation. After applying a dedicated correction, the |
| 119 |
< |
azimuthal dependence is reduced (right).} |
| 120 |
< |
\end{center} |
| 121 |
< |
\end{figure} |
| 112 |
> |
\begin{table}[!h] |
| 113 |
> |
\begin{center} |
| 114 |
> |
\footnotesize |
| 115 |
> |
\begin{tabular}{l||c|c|c|c|c|c|c} |
| 116 |
> |
\hline |
| 117 |
> |
Sample & SRA & SRB & SRC & SRD & SRE & SRF & SRG\\ |
| 118 |
> |
\hline |
| 119 |
> |
\hline |
| 120 |
> |
\ttdl\ & $619 \pm 9$& $366 \pm 7$& $127 \pm 4$& $44 \pm 2$& $17 \pm 1$& $7 \pm 1$& $4 \pm 1$ \\ |
| 121 |
> |
\ttsl\ \& single top (1\Lep) & $95 \pm 3$& $67 \pm 3$& $15 \pm 1$& $6 \pm 1$& $2 \pm 1$& $1 \pm 1$& $1 \pm 0$ \\ |
| 122 |
> |
\wjets\ & $29 \pm 2$& $15 \pm 2$& $6 \pm 1$& $3 \pm 1$& $1 \pm 0$& $0 \pm 0$& $0 \pm 0$ \\ |
| 123 |
> |
Rare & $59 \pm 3$& $38 \pm 3$& $16 \pm 2$& $8 \pm 1$& $4 \pm 1$& $2 \pm 0$& $1 \pm 0$ \\ |
| 124 |
> |
\hline |
| 125 |
> |
Total & $802 \pm 10$& $486 \pm 8$& $164 \pm 5$& $62 \pm 3$& $23 \pm 2$& $10 \pm 1$& $6 \pm 1$ \\ |
| 126 |
> |
\hline |
| 127 |
> |
Yield UL (optimistic) & 147 (10\%) & 94 (10\%) & 47 (15\%) & 25 (20\%) & 14 (25\%) & 8.6 (30\%) & 7.5 (50\%) \\ |
| 128 |
> |
Yield UL (pessimistic) & 200 (15\%) & 152 (20\%) & 64 (25\%) & 30 (30\%) & 15 (35\%) & 9.7 (50\%) & 8.2 (100\%) \\ |
| 129 |
> |
\hline |
| 130 |
> |
T2tt m(stop) = 250 m($\chi^0$) = 0 & $315 \pm 18$& $193 \pm 14$& $53 \pm 8$& $13 \pm 4$& $2 \pm 2$& $0 \pm 0$& $0 \pm 0$ \\ \hline |
| 131 |
> |
T2tt m(stop) = 300 m($\chi^0$) = 50 & $296 \pm 11$& $236 \pm 10$& $88 \pm 6$& $28 \pm 3$& $10 \pm 2$& $2 \pm 1$& $0 \pm 0$ \\ \hline |
| 132 |
> |
T2tt m(stop) = 300 m($\chi^0$) = 100 & $128 \pm 7$& $93 \pm 6$& $29 \pm 3$& $10 \pm 2$& $5 \pm 1$& $2 \pm 1$& $1 \pm 1$ \\ \hline |
| 133 |
> |
T2tt m(stop) = 350 m($\chi^0$) = 0 & $224 \pm 6$& $206 \pm 6$& $119 \pm 4$& $52 \pm 3$& $20 \pm 2$& $8 \pm 1$& $3 \pm 1$ \\ \hline |
| 134 |
> |
T2tt m(stop) = 450 m($\chi^0$) = 0 & $71 \pm 2$& $71 \pm 2$& $53 \pm 1$& $36 \pm 1$& $21 \pm 1$& $11 \pm 1$& $5 \pm 0$ \\ |
| 135 |
> |
\hline |
| 136 |
> |
\end{tabular} |
| 137 |
> |
\caption{ Expected SM background contributions and signal yields for a few sample points, |
| 138 |
> |
including both muon and electron channels. This is ``dead reckoning'' MC with no |
| 139 |
> |
correction. It is meant only as a general guide. The uncertainties are statistical only. |
| 140 |
> |
The signal yield expected upper limits are also shown for two values of the total background systematic uncertainty, indicated in parentheses. |
| 141 |
> |
%[{\bf VERENA} THESE SIGNAL YIELDS NEED TO BE UPDATED. Do you have a point with larger stop mass to illustrate why we use SRF and SRG? ]. |
| 142 |
> |
%HOOBERMAN |
| 143 |
> |
\label{tab:srrawmcyields}} |
| 144 |
> |
\end{center} |
| 145 |
> |
\end{table} |
| 146 |
|
|
| 147 |
< |
\clearpage |
| 147 |
> |
\subsection{Control Region Selection} |
| 148 |
> |
\label{sec:CRsel} |
| 149 |
|
|
| 150 |
< |
\subsection{Branching Fraction Correction} |
| 150 |
> |
Control regions (CRs) are used to validate the background estimation |
| 151 |
> |
procedure and derive systematic uncertainties for some |
| 152 |
> |
contributions. The CRs are selected to have similar |
| 153 |
> |
kinematics to the SRs, but have a different requirement in terms of |
| 154 |
> |
number of b-tags and number of leptons, thus enhancing them in |
| 155 |
> |
different SM contributions. The four CRs used in this analysis are |
| 156 |
> |
summarized in Table~\ref{tab:crdef}. |
| 157 |
> |
|
| 158 |
> |
\begin{table} |
| 159 |
> |
\begin{center} |
| 160 |
> |
{\small |
| 161 |
> |
\begin{tabular}{l|c|c|c} |
| 162 |
> |
\hline |
| 163 |
> |
Selection & \multirow{2}{*}{exactly 1 lepton} & \multirow{2}{*}{exactly 2 |
| 164 |
> |
leptons} & \multirow{2}{*}{1 lepton + isolated |
| 165 |
> |
track}\\ |
| 166 |
> |
Criteria & & & \\ |
| 167 |
> |
\hline |
| 168 |
> |
\hline |
| 169 |
> |
\multirow{4}{*}{0 b-tags} |
| 170 |
> |
& CR1) W+Jets dominated: |
| 171 |
> |
& CR2) apply \Z-mass constraint |
| 172 |
> |
& CR3) not used \\ |
| 173 |
> |
& |
| 174 |
> |
& $\rightarrow$ Z+Jets dominated: Validate |
| 175 |
> |
& \\ |
| 176 |
> |
& Validate W+Jets \mt\ tail |
| 177 |
> |
& \ttsl\ \mt\ tail comparing |
| 178 |
> |
& \\ |
| 179 |
> |
& |
| 180 |
> |
& data vs. MC ``pseudo-\mt '' |
| 181 |
> |
& \\ |
| 182 |
> |
\hline |
| 183 |
> |
\multirow{4}{*}{$\ge$ 1 b-tags} |
| 184 |
> |
& |
| 185 |
> |
& CR4) Apply \Z-mass veto |
| 186 |
> |
& CR5) \ttdl, \ttlt\ and \\ |
| 187 |
> |
& SIGNAL |
| 188 |
> |
& $\rightarrow$ \ttdl\ dominated: Validate |
| 189 |
> |
& \ttlf\ dominated: Validate \\ |
| 190 |
> |
& REGION |
| 191 |
> |
& ``physics'' modelling of \ttdl\ |
| 192 |
> |
& \Tau\ and fake lepton modeling/\\ |
| 193 |
> |
& |
| 194 |
> |
& |
| 195 |
> |
& detector effects in \ttdl\ \\ |
| 196 |
> |
\hline |
| 197 |
> |
\end{tabular} |
| 198 |
> |
} |
| 199 |
> |
\caption{Summary of signal and control regions. |
| 200 |
> |
\label{tab:crdef}%\protect |
| 201 |
> |
} |
| 202 |
> |
\end{center} |
| 203 |
> |
\end{table} |
| 204 |
> |
|
| 205 |
> |
\subsection{Definition of $M_T$ peak region} |
| 206 |
> |
\label{sec:mtpeakdef} |
| 207 |
> |
|
| 208 |
> |
This region is defined as $50 < M_T < 80$ GeV. |
| 209 |
> |
|
| 210 |
> |
|
| 211 |
> |
\subsection{Default \ttbar\ MC sample} |
| 212 |
> |
|
| 213 |
> |
Our default \ttbar\ MC sample is Powheg. |
| 214 |
> |
|
| 215 |
> |
\subsection{MC Corrections} |
| 216 |
> |
\label{sec:MCCorr} |
| 217 |
> |
|
| 218 |
> |
All MC samples are corrected for trigger efficiency. In the case of |
| 219 |
> |
single lepton selections, we apply the $P_T$ and $\eta$-dependent |
| 220 |
> |
scale factors that we measure ourselves, see Section~\ref{sec:trg}. |
| 221 |
> |
In the case of dilepton selections that require the dilepton triggers, |
| 222 |
> |
we apply overall scale factors of 0.95, 0.88, and 0.92 for $ee$, |
| 223 |
> |
$\mu\mu$, |
| 224 |
> |
and $e\mu$ respectively~\cite{didar}. |
| 225 |
|
|
| 226 |
|
The leptonic branching fraction used in some of the \ttbar\ MC samples |
| 227 |
|
differs from the value listed in the PDG $(10.80 \pm 0.09)\%$. |
| 228 |
< |
Table.~\ref{tab:wlepbf} summarizes the branching fractions used in |
| 228 |
> |
Table~\ref{tab:wlepbf} summarizes the branching fractions used in |
| 229 |
|
the generation of the various \ttbar\ MC samples. |
| 230 |
|
For \ttbar\ samples with the incorrect leptonic branching fraction, event |
| 231 |
|
weights are applied based on the number of true leptons and the ratio |
| 238 |
|
\ttbar\ Sample - Event Generator & Leptonic Branching Fraction\\ |
| 239 |
|
\hline |
| 240 |
|
\hline |
| 241 |
< |
Madgraph & 0.111\\ |
| 242 |
< |
MC@NLO & 0.111\\ |
| 243 |
< |
Pythia & 0.108\\ |
| 241 |
> |
Madgraph & 0.111\\ |
| 242 |
> |
MC@NLO & 0.111\\ |
| 243 |
> |
Pythia & 0.108\\ |
| 244 |
|
Powheg & 0.108\\ |
| 245 |
|
\hline |
| 246 |
|
\end{tabular} |
| 247 |
|
\caption{Leptonic branching fractions for the various \ttbar\ samples |
| 248 |
< |
used in the analysis. The primary \ttbar\ MC sample produced with |
| 249 |
< |
Madgraph has a branching fraction that is almost $3\%$ higher than |
| 248 |
> |
used in the analysis. The \ttbar\ MC samples produced with |
| 249 |
> |
Madgraph and MC@NLO has a branching fraction that is almost $3\%$ higher than |
| 250 |
|
the PDG value. \label{tab:wlepbf}} |
| 251 |
|
\end{center} |
| 252 |
|
\end{table} |
| 253 |
|
|
| 254 |
+ |
All \ttbar\ dilepton samples are corrected (when needed and |
| 255 |
+ |
appropriate) |
| 256 |
+ |
in order to have the correct jet multiplicity distribution. This |
| 257 |
+ |
correction procedure is described in Section~\ref{sec:jetmultiplicity}. |
| 258 |
+ |
|
| 259 |
+ |
|
| 260 |
+ |
\subsubsection{Corrections to Jets and \met} |
| 261 |
+ |
\label{sec:JetMet} |
| 262 |
+ |
|
| 263 |
+ |
The official recommendations from the Jet/MET group are used for |
| 264 |
+ |
the data and MC samples. In particular, the jet |
| 265 |
+ |
energy corrections (JEC) are updated using the official recipe. |
| 266 |
+ |
L1FastL2L3Residual (L1FastL2L3) corrections are applied for data (MC), |
| 267 |
+ |
based on the global tags GR\_R\_52\_V9 (START52\_V9B) for |
| 268 |
+ |
data (MC). In addition, these jet energy corrections are propagated to |
| 269 |
+ |
the \met\ calculation, following the official prescription for |
| 270 |
+ |
deriving the Type I corrections. |
| 271 |
+ |
|
| 272 |
+ |
Events with anomalous ``rho'' pile-up corrections are excluded from the sample since these |
| 273 |
+ |
correspond to events with unphysically large \met\ and \mt. |
| 274 |
+ |
%tail signal region. |
| 275 |
+ |
In addition, the recommended MET filters are applied. |
| 276 |
+ |
A correction to remove the $\phi$ modulation in \met\ is also applied |
| 277 |
+ |
to the data. |
| 278 |
+ |
|
| 279 |
+ |
|
| 280 |
+ |
\subsection{Lepton Selection Efficiency Measurements} |
| 281 |
+ |
\label{sec:lepEff} |
| 282 |
+ |
|
| 283 |
+ |
In this section we measure the identification and isolation efficiencies for muons and electrons in data and MC using tag-and-probe studies. |
| 284 |
+ |
The tag is required to pass the full offline analysis selection and have \pt\ $>$ 30 GeV, $|\eta|<2.1$, and be matched to the single |
| 285 |
+ |
lepton trigger, HLT\_IsoMu24(\_eta2p1) for muons and HLT\_Ele27\_WP80 for electrons. |
| 286 |
+ |
The probe is required to have $|\eta|<2.1$ and \pt\ $>$ 20 GeV. To measure the identification efficiency we require the probe to pass the isolation requirement, |
| 287 |
+ |
to measure the isolation efficiency we require the probe to pass the |
| 288 |
+ |
identification requirement. |
| 289 |
+ |
|
| 290 |
+ |
The tag-probe pair is required to have opposite-sign and an invariant mass in the range 76--106 GeV. |
| 291 |
+ |
In order to suppress lepton pairs from sources other than Z boson |
| 292 |
+ |
decays, we require the event to have \met\ $<$ 30 GeV and no b-tagged |
| 293 |
+ |
jets (CSV loose working point). |
| 294 |
+ |
|
| 295 |
+ |
The muon efficiencies are summarized in Table~\ref{tab:mutnpeff} for inclusive events (i.e. no jet requirements). These efficiencies are displayed in Fig.~\ref{fig:mutnpeff} for |
| 296 |
+ |
several different jet multiplicity requirements. |
| 297 |
+ |
We currently observe good agreement for muons with \pt\ up to about 300 GeV. |
| 298 |
+ |
For high \pt\ muons we observe a source of background in the data with large impact parameters, which we suppress by requiring muon $d_0<0.02$~cm and $d_Z<0.5$~cm. |
| 299 |
+ |
%For muons with \pt\ $>$ 200 GeV the data efficiency |
| 300 |
+ |
%begins to drop, and the effect is especially pronounced for muons with \pt\ $>$ 300 GeV. |
| 301 |
+ |
We are currently investigating the source of this inefficiency. |
| 302 |
+ |
The electron efficiencies are summarized in Table~\ref{tab:eltnpeff} for inclusive events (i.e. no jet requirements). These efficiencies are displayed in Fig.~\ref{fig:eltnpeff} |
| 303 |
+ |
for several different jet multiplicity requirements. In general we observe good agreement between the data and MC identification and isolation efficiencies. |
| 304 |
+ |
|
| 305 |
+ |
% Pending a better understanding of the very high \pt\ muon efficiency, |
| 306 |
+ |
We |
| 307 |
+ |
do not correct the MC for differences in lepton efficiency. In the |
| 308 |
+ |
background calculation, we do not take any systematics due to lepton |
| 309 |
+ |
selection |
| 310 |
+ |
efficiency uncertainties. This is because all backgrounds except the |
| 311 |
+ |
rare MC background are normalized to the $M_T$ peak, thus the lepton |
| 312 |
+ |
identification uncertainty cancels out. For the rare MC these |
| 313 |
+ |
uncertainties |
| 314 |
+ |
are negligible compared to the assumed cross-section uncertainty |
| 315 |
+ |
(Section~\ref{sec:bkg_other}). |
| 316 |
+ |
|
| 317 |
+ |
|
| 318 |
+ |
|
| 319 |
+ |
|
| 320 |
+ |
\begin{table}[htb] |
| 321 |
+ |
\begin{center} |
| 322 |
+ |
\scriptsize |
| 323 |
+ |
\caption{\label{tab:mutnpeff} |
| 324 |
+ |
Summary of the data and MC muon identification and isolation efficiencies measured with tag-and-probe studies.} |
| 325 |
+ |
\begin{tabular}{c|c|c|c} |
| 326 |
+ |
|
| 327 |
+ |
%Selection : ((((((((abs(tagAndProbeMass-91)<15)&&(qProbe*qTag<0))&&((eventSelection&2)==2))&&(HLT_IsoMu24_tag > 0))&&(abs(tag->eta())<2.1))&&(tag->pt()>30.0))&&(abs(probe->eta())<2.1))&&(met<30))&&(nbl==0) |
| 328 |
+ |
%Ndata : 4751710 |
| 329 |
+ |
%NMC : 4127153 |
| 330 |
+ |
|
| 331 |
+ |
\hline |
| 332 |
+ |
\hline |
| 333 |
+ |
MC ID & & & \\ |
| 334 |
+ |
\pt\ range [GeV] & $|\eta|<0.8$ & $0.8<|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 335 |
+ |
\hline |
| 336 |
+ |
20 - 30 & 0.9672 $\pm$ 0.0005 & 0.9640 $\pm$ 0.0006 & 0.9471 $\pm$ 0.0008 \\ |
| 337 |
+ |
30 - 40 & 0.9684 $\pm$ 0.0002 & 0.9657 $\pm$ 0.0003 & 0.9446 $\pm$ 0.0004 \\ |
| 338 |
+ |
40 - 50 & 0.9704 $\pm$ 0.0002 & 0.9687 $\pm$ 0.0002 & 0.9432 $\pm$ 0.0004 \\ |
| 339 |
+ |
50 - 60 & 0.9684 $\pm$ 0.0005 & 0.9640 $\pm$ 0.0005 & 0.9414 $\pm$ 0.0009 \\ |
| 340 |
+ |
60 - 80 & 0.9678 $\pm$ 0.0009 & 0.9640 $\pm$ 0.0010 & 0.9354 $\pm$ 0.0018 \\ |
| 341 |
+ |
80 - 100 & 0.9709 $\pm$ 0.0021 & 0.9642 $\pm$ 0.0027 & 0.9234 $\pm$ 0.0051 \\ |
| 342 |
+ |
100 - 150 & 0.9679 $\pm$ 0.0029 & 0.9654 $\pm$ 0.0035 & 0.9261 $\pm$ 0.0069 \\ |
| 343 |
+ |
150 - 200 & 0.9643 $\pm$ 0.0069 & 0.9568 $\pm$ 0.0088 & 0.9045 $\pm$ 0.0198 \\ |
| 344 |
+ |
200 - 300 & 0.9647 $\pm$ 0.0116 & 0.9388 $\pm$ 0.0171 & 0.8906 $\pm$ 0.0390 \\ |
| 345 |
+ |
300 - 10000 & 1.0000 $\pm$ 0.0000 & 1.0000 $\pm$ 0.0000 & 1.0000 $\pm$ 0.0000 \\ |
| 346 |
+ |
\hline |
| 347 |
+ |
\hline |
| 348 |
+ |
MC ISO & & & \\ |
| 349 |
+ |
\pt\ range [GeV] & $|\eta|<0.8$ & $0.8<|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 350 |
+ |
\hline |
| 351 |
+ |
20 - 30 & 0.8966 $\pm$ 0.0007 & 0.9153 $\pm$ 0.0008 & 0.9298 $\pm$ 0.0009 \\ |
| 352 |
+ |
30 - 40 & 0.9610 $\pm$ 0.0002 & 0.9632 $\pm$ 0.0003 & 0.9707 $\pm$ 0.0003 \\ |
| 353 |
+ |
40 - 50 & 0.9876 $\pm$ 0.0001 & 0.9897 $\pm$ 0.0001 & 0.9912 $\pm$ 0.0002 \\ |
| 354 |
+ |
50 - 60 & 0.9921 $\pm$ 0.0002 & 0.9927 $\pm$ 0.0003 & 0.9939 $\pm$ 0.0003 \\ |
| 355 |
+ |
60 - 80 & 0.9927 $\pm$ 0.0004 & 0.9937 $\pm$ 0.0004 & 0.9947 $\pm$ 0.0005 \\ |
| 356 |
+ |
80 - 100 & 0.9920 $\pm$ 0.0012 & 0.9921 $\pm$ 0.0013 & 0.9932 $\pm$ 0.0016 \\ |
| 357 |
+ |
100 - 150 & 0.9898 $\pm$ 0.0017 & 0.9923 $\pm$ 0.0017 & 0.9933 $\pm$ 0.0022 \\ |
| 358 |
+ |
150 - 200 & 0.9901 $\pm$ 0.0037 & 0.9922 $\pm$ 0.0039 & 0.9950 $\pm$ 0.0050 \\ |
| 359 |
+ |
200 - 300 & 0.9919 $\pm$ 0.0057 & 1.0000 $\pm$ 0.0000 & 0.9828 $\pm$ 0.0171 \\ |
| 360 |
+ |
300 - 10000 & 1.0000 $\pm$ 0.0000 & 1.0000 $\pm$ 0.0000 & 1.0000 $\pm$ 0.0000 \\ |
| 361 |
+ |
\hline |
| 362 |
+ |
\hline |
| 363 |
+ |
DATA ID & & & \\ |
| 364 |
+ |
\pt\ range [GeV] & $|\eta|<0.8$ & $0.8<|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 365 |
+ |
\hline |
| 366 |
+ |
20 - 30 & 0.9530 $\pm$ 0.0005 & 0.9517 $\pm$ 0.0006 & 0.9369 $\pm$ 0.0008 \\ |
| 367 |
+ |
30 - 40 & 0.9556 $\pm$ 0.0003 & 0.9519 $\pm$ 0.0003 & 0.9362 $\pm$ 0.0005 \\ |
| 368 |
+ |
40 - 50 & 0.9584 $\pm$ 0.0002 & 0.9558 $\pm$ 0.0003 & 0.9355 $\pm$ 0.0004 \\ |
| 369 |
+ |
50 - 60 & 0.9540 $\pm$ 0.0005 & 0.9487 $\pm$ 0.0006 & 0.9314 $\pm$ 0.0010 \\ |
| 370 |
+ |
60 - 80 & 0.9536 $\pm$ 0.0010 & 0.9466 $\pm$ 0.0012 & 0.9307 $\pm$ 0.0019 \\ |
| 371 |
+ |
80 - 100 & 0.9505 $\pm$ 0.0028 & 0.9414 $\pm$ 0.0035 & 0.9289 $\pm$ 0.0053 \\ |
| 372 |
+ |
100 - 150 & 0.9472 $\pm$ 0.0038 & 0.9454 $\pm$ 0.0045 & 0.9149 $\pm$ 0.0079 \\ |
| 373 |
+ |
150 - 200 & 0.9628 $\pm$ 0.0073 & 0.9675 $\pm$ 0.0089 & 0.8950 $\pm$ 0.0217 \\ |
| 374 |
+ |
200 - 300 & 0.9463 $\pm$ 0.0157 & 0.9290 $\pm$ 0.0206 & 0.8889 $\pm$ 0.0468 \\ |
| 375 |
+ |
300 - 10000 & 0.9412 $\pm$ 0.0404 & 1.0000 $\pm$ 0.0000 & 0.4000 $\pm$ 0.2191 \\ |
| 376 |
+ |
\hline |
| 377 |
+ |
\hline |
| 378 |
+ |
DATA ISO & & & \\ |
| 379 |
+ |
\pt\ range [GeV] & $|\eta|<0.8$ & $0.8<|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 380 |
+ |
\hline |
| 381 |
+ |
20 - 30 & 0.8939 $\pm$ 0.0007 & 0.9144 $\pm$ 0.0008 & 0.9361 $\pm$ 0.0008 \\ |
| 382 |
+ |
30 - 40 & 0.9598 $\pm$ 0.0002 & 0.9646 $\pm$ 0.0003 & 0.9744 $\pm$ 0.0003 \\ |
| 383 |
+ |
40 - 50 & 0.9870 $\pm$ 0.0001 & 0.9901 $\pm$ 0.0001 & 0.9920 $\pm$ 0.0002 \\ |
| 384 |
+ |
50 - 60 & 0.9912 $\pm$ 0.0002 & 0.9933 $\pm$ 0.0002 & 0.9953 $\pm$ 0.0003 \\ |
| 385 |
+ |
60 - 80 & 0.9920 $\pm$ 0.0004 & 0.9934 $\pm$ 0.0005 & 0.9956 $\pm$ 0.0005 \\ |
| 386 |
+ |
80 - 100 & 0.9926 $\pm$ 0.0011 & 0.9933 $\pm$ 0.0013 & 0.9955 $\pm$ 0.0014 \\ |
| 387 |
+ |
100 - 150 & 0.9913 $\pm$ 0.0016 & 0.9949 $\pm$ 0.0015 & 0.9965 $\pm$ 0.0017 \\ |
| 388 |
+ |
150 - 200 & 0.9969 $\pm$ 0.0022 & 0.9974 $\pm$ 0.0026 & 0.9944 $\pm$ 0.0055 \\ |
| 389 |
+ |
200 - 300 & 1.0000 $\pm$ 0.0000 & 1.0000 $\pm$ 0.0000 & 1.0000 $\pm$ 0.0000 \\ |
| 390 |
+ |
300 - 10000 & 1.0000 $\pm$ 0.0000 & 1.0000 $\pm$ 0.0000 & 1.0000 $\pm$ 0.0000 \\ |
| 391 |
+ |
\hline |
| 392 |
+ |
\hline |
| 393 |
+ |
Scale Factor ID & & & \\ |
| 394 |
+ |
\pt\ range [GeV] & $|\eta|<0.8$ & $0.8<|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 395 |
+ |
\hline |
| 396 |
+ |
20 - 30 & 0.9853 $\pm$ 0.0007 & 0.9872 $\pm$ 0.0009 & 0.9893 $\pm$ 0.0012 \\ |
| 397 |
+ |
30 - 40 & 0.9868 $\pm$ 0.0003 & 0.9857 $\pm$ 0.0005 & 0.9911 $\pm$ 0.0007 \\ |
| 398 |
+ |
40 - 50 & 0.9877 $\pm$ 0.0003 & 0.9866 $\pm$ 0.0004 & 0.9918 $\pm$ 0.0006 \\ |
| 399 |
+ |
50 - 60 & 0.9851 $\pm$ 0.0007 & 0.9841 $\pm$ 0.0009 & 0.9894 $\pm$ 0.0014 \\ |
| 400 |
+ |
60 - 80 & 0.9853 $\pm$ 0.0014 & 0.9820 $\pm$ 0.0017 & 0.9949 $\pm$ 0.0028 \\ |
| 401 |
+ |
80 - 100 & 0.9790 $\pm$ 0.0036 & 0.9763 $\pm$ 0.0046 & 1.0059 $\pm$ 0.0080 \\ |
| 402 |
+ |
100 - 150 & 0.9786 $\pm$ 0.0049 & 0.9793 $\pm$ 0.0059 & 0.9879 $\pm$ 0.0113 \\ |
| 403 |
+ |
150 - 200 & 0.9984 $\pm$ 0.0104 & 1.0112 $\pm$ 0.0131 & 0.9894 $\pm$ 0.0323 \\ |
| 404 |
+ |
200 - 300 & 0.9810 $\pm$ 0.0201 & 0.9896 $\pm$ 0.0284 & 0.9981 $\pm$ 0.0684 \\ |
| 405 |
+ |
300 - 10000 & 0.9412 $\pm$ 0.0404 & 1.0000 $\pm$ 0.0000 & 0.4000 $\pm$ 0.2191 \\ |
| 406 |
+ |
\hline |
| 407 |
+ |
\hline |
| 408 |
+ |
Scale Factor ISO & & & \\ |
| 409 |
+ |
\pt\ range [GeV] & $|\eta|<0.8$ & $0.8<|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 410 |
+ |
\hline |
| 411 |
+ |
20 - 30 & 0.9970 $\pm$ 0.0012 & 0.9989 $\pm$ 0.0012 & 1.0068 $\pm$ 0.0013 \\ |
| 412 |
+ |
30 - 40 & 0.9987 $\pm$ 0.0004 & 1.0014 $\pm$ 0.0004 & 1.0038 $\pm$ 0.0005 \\ |
| 413 |
+ |
40 - 50 & 0.9994 $\pm$ 0.0002 & 1.0004 $\pm$ 0.0002 & 1.0008 $\pm$ 0.0002 \\ |
| 414 |
+ |
50 - 60 & 0.9991 $\pm$ 0.0003 & 1.0006 $\pm$ 0.0003 & 1.0013 $\pm$ 0.0004 \\ |
| 415 |
+ |
60 - 80 & 0.9993 $\pm$ 0.0006 & 0.9997 $\pm$ 0.0006 & 1.0009 $\pm$ 0.0008 \\ |
| 416 |
+ |
80 - 100 & 1.0006 $\pm$ 0.0016 & 1.0012 $\pm$ 0.0018 & 1.0023 $\pm$ 0.0022 \\ |
| 417 |
+ |
100 - 150 & 1.0015 $\pm$ 0.0023 & 1.0027 $\pm$ 0.0023 & 1.0032 $\pm$ 0.0028 \\ |
| 418 |
+ |
150 - 200 & 1.0068 $\pm$ 0.0044 & 1.0053 $\pm$ 0.0047 & 0.9994 $\pm$ 0.0075 \\ |
| 419 |
+ |
200 - 300 & 1.0081 $\pm$ 0.0058 & 1.0000 $\pm$ 0.0000 & 1.0175 $\pm$ 0.0177 \\ |
| 420 |
+ |
300 - 10000 & 1.0000 $\pm$ 0.0000 & 1.0000 $\pm$ 0.0000 & 1.0000 $\pm$ 0.0000 \\ |
| 421 |
+ |
\hline |
| 422 |
+ |
\hline |
| 423 |
+ |
|
| 424 |
+ |
\end{tabular} |
| 425 |
+ |
\end{center} |
| 426 |
+ |
\end{table} |
| 427 |
+ |
|
| 428 |
+ |
\begin{figure}[hbt] |
| 429 |
+ |
\begin{center} |
| 430 |
+ |
\includegraphics[width=0.3\linewidth]{plots/mu_id_njets0.pdf}% |
| 431 |
+ |
\includegraphics[width=0.3\linewidth]{plots/mu_iso_njets0.pdf} |
| 432 |
+ |
\includegraphics[width=0.3\linewidth]{plots/mu_id_njets1.pdf}% |
| 433 |
+ |
\includegraphics[width=0.3\linewidth]{plots/mu_iso_njets1.pdf} |
| 434 |
+ |
\includegraphics[width=0.3\linewidth]{plots/mu_id_njets2.pdf}% |
| 435 |
+ |
\includegraphics[width=0.3\linewidth]{plots/mu_iso_njets2.pdf} |
| 436 |
+ |
\includegraphics[width=0.3\linewidth]{plots/mu_id_njets3.pdf}% |
| 437 |
+ |
\includegraphics[width=0.3\linewidth]{plots/mu_iso_njets3.pdf} |
| 438 |
+ |
\includegraphics[width=0.3\linewidth]{plots/mu_id_njets4.pdf}% |
| 439 |
+ |
\includegraphics[width=0.3\linewidth]{plots/mu_iso_njets4.pdf} |
| 440 |
+ |
\caption{ |
| 441 |
+ |
\label{fig:mutnpeff} Comparison of the muon identification and isolation efficiencies in data and MC for various jet multiplicity requirements. } |
| 442 |
+ |
\end{center} |
| 443 |
+ |
\end{figure} |
| 444 |
+ |
|
| 445 |
+ |
\clearpage |
| 446 |
+ |
|
| 447 |
+ |
\begin{table}[htb] |
| 448 |
+ |
\begin{center} |
| 449 |
+ |
\scriptsize |
| 450 |
+ |
\caption{\label{tab:eltnpeff} |
| 451 |
+ |
Summary of the data and MC electron identification and isolation efficiencies measured with tag-and-probe studies.} |
| 452 |
+ |
\begin{tabular}{c|c|c} |
| 453 |
+ |
|
| 454 |
+ |
%Selection : ((((((((abs(tagAndProbeMass-91)<15)&&(qProbe*qTag<0))&&(abs(tag->eta())<2.1))&&(tag->pt()>30.0))&&(abs(probe->eta())<2.1))&&(met<30))&&(nbl==0))&&((eventSelection&1)==1))&&(HLT_Ele27_WP80_tag > 0) |
| 455 |
+ |
%Ndata : 3577620 |
| 456 |
+ |
%NMC : 3240624 |
| 457 |
+ |
%ID cut : (leptonSelection&8)==8 |
| 458 |
+ |
%iso cut : (leptonSelection&16)==16 |
| 459 |
+ |
|
| 460 |
+ |
\hline |
| 461 |
+ |
\hline |
| 462 |
+ |
MC ID & & \\ |
| 463 |
+ |
\pt\ range [GeV] & $|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 464 |
+ |
\hline |
| 465 |
+ |
20 - 30 & 0.8156 $\pm$ 0.0008 & 0.6565 $\pm$ 0.0019 \\ |
| 466 |
+ |
30 - 40 & 0.8670 $\pm$ 0.0004 & 0.7450 $\pm$ 0.0010 \\ |
| 467 |
+ |
40 - 50 & 0.8922 $\pm$ 0.0003 & 0.7847 $\pm$ 0.0008 \\ |
| 468 |
+ |
50 - 60 & 0.9023 $\pm$ 0.0006 & 0.7956 $\pm$ 0.0018 \\ |
| 469 |
+ |
60 - 80 & 0.9097 $\pm$ 0.0011 & 0.8166 $\pm$ 0.0034 \\ |
| 470 |
+ |
80 - 100 & 0.9203 $\pm$ 0.0028 & 0.8196 $\pm$ 0.0090 \\ |
| 471 |
+ |
100 - 150 & 0.9162 $\pm$ 0.0037 & 0.8378 $\pm$ 0.0117 \\ |
| 472 |
+ |
150 - 200 & 0.9106 $\pm$ 0.0087 & 0.8111 $\pm$ 0.0292 \\ |
| 473 |
+ |
200 - 300 & 0.9304 $\pm$ 0.0119 & 0.9153 $\pm$ 0.0363 \\ |
| 474 |
+ |
300 - 10000 & 0.8684 $\pm$ 0.0388 & 0.8000 $\pm$ 0.1789 \\ |
| 475 |
+ |
\hline |
| 476 |
+ |
\hline |
| 477 |
+ |
MC ISO & & \\ |
| 478 |
+ |
|
| 479 |
+ |
\pt\ range [GeV] & $|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 480 |
+ |
\hline |
| 481 |
+ |
20 - 30 & 0.9245 $\pm$ 0.0006 & 0.9466 $\pm$ 0.0011 \\ |
| 482 |
+ |
30 - 40 & 0.9682 $\pm$ 0.0002 & 0.9741 $\pm$ 0.0004 \\ |
| 483 |
+ |
40 - 50 & 0.9876 $\pm$ 0.0001 & 0.9883 $\pm$ 0.0002 \\ |
| 484 |
+ |
50 - 60 & 0.9909 $\pm$ 0.0002 & 0.9912 $\pm$ 0.0005 \\ |
| 485 |
+ |
60 - 80 & 0.9916 $\pm$ 0.0004 & 0.9930 $\pm$ 0.0008 \\ |
| 486 |
+ |
80 - 100 & 0.9915 $\pm$ 0.0010 & 0.9908 $\pm$ 0.0025 \\ |
| 487 |
+ |
100 - 150 & 0.9929 $\pm$ 0.0012 & 0.9894 $\pm$ 0.0035 \\ |
| 488 |
+ |
150 - 200 & 0.9919 $\pm$ 0.0029 & 0.9932 $\pm$ 0.0068 \\ |
| 489 |
+ |
200 - 300 & 0.9953 $\pm$ 0.0033 & 1.0000 $\pm$ 0.0000 \\ |
| 490 |
+ |
300 - 10000 & 1.0000 $\pm$ 0.0000 & 1.0000 $\pm$ 0.0000 \\ |
| 491 |
+ |
\hline |
| 492 |
+ |
\hline |
| 493 |
+ |
DATA ID & & \\ |
| 494 |
+ |
|
| 495 |
+ |
\pt\ range [GeV] & $|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 496 |
+ |
\hline |
| 497 |
+ |
20 - 30 & 0.8145 $\pm$ 0.0008 & 0.6528 $\pm$ 0.0018 \\ |
| 498 |
+ |
30 - 40 & 0.8676 $\pm$ 0.0004 & 0.7462 $\pm$ 0.0010 \\ |
| 499 |
+ |
40 - 50 & 0.8955 $\pm$ 0.0003 & 0.7922 $\pm$ 0.0008 \\ |
| 500 |
+ |
50 - 60 & 0.9049 $\pm$ 0.0006 & 0.8072 $\pm$ 0.0018 \\ |
| 501 |
+ |
60 - 80 & 0.9110 $\pm$ 0.0011 & 0.8212 $\pm$ 0.0035 \\ |
| 502 |
+ |
80 - 100 & 0.9156 $\pm$ 0.0028 & 0.8358 $\pm$ 0.0091 \\ |
| 503 |
+ |
100 - 150 & 0.9257 $\pm$ 0.0036 & 0.8507 $\pm$ 0.0116 \\ |
| 504 |
+ |
150 - 200 & 0.9186 $\pm$ 0.0084 & 0.8929 $\pm$ 0.0292 \\ |
| 505 |
+ |
200 - 300 & 0.9106 $\pm$ 0.0149 & 0.7576 $\pm$ 0.0746 \\ |
| 506 |
+ |
300 - 10000 & 0.9400 $\pm$ 0.0336 & 1.0000 $\pm$ 0.0000 \\ |
| 507 |
+ |
\hline |
| 508 |
+ |
\hline |
| 509 |
+ |
DATA ISO & & \\ |
| 510 |
+ |
|
| 511 |
+ |
\pt\ range [GeV] & $|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 512 |
+ |
\hline |
| 513 |
+ |
20 - 30 & 0.9201 $\pm$ 0.0006 & 0.9419 $\pm$ 0.0011 \\ |
| 514 |
+ |
30 - 40 & 0.9667 $\pm$ 0.0002 & 0.9734 $\pm$ 0.0004 \\ |
| 515 |
+ |
40 - 50 & 0.9872 $\pm$ 0.0001 & 0.9892 $\pm$ 0.0002 \\ |
| 516 |
+ |
50 - 60 & 0.9904 $\pm$ 0.0002 & 0.9922 $\pm$ 0.0004 \\ |
| 517 |
+ |
60 - 80 & 0.9923 $\pm$ 0.0004 & 0.9916 $\pm$ 0.0009 \\ |
| 518 |
+ |
80 - 100 & 0.9914 $\pm$ 0.0010 & 0.9921 $\pm$ 0.0024 \\ |
| 519 |
+ |
100 - 150 & 0.9945 $\pm$ 0.0011 & 1.0000 $\pm$ 0.0000 \\ |
| 520 |
+ |
150 - 200 & 0.9908 $\pm$ 0.0031 & 1.0000 $\pm$ 0.0000 \\ |
| 521 |
+ |
200 - 300 & 0.9941 $\pm$ 0.0042 & 1.0000 $\pm$ 0.0000 \\ |
| 522 |
+ |
300 - 10000 & 0.9792 $\pm$ 0.0206 & 1.0000 $\pm$ 0.0000 \\ |
| 523 |
+ |
\hline |
| 524 |
+ |
\hline |
| 525 |
+ |
Scale Factor ID & & \\ |
| 526 |
+ |
|
| 527 |
+ |
\pt\ range [GeV] & $|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 528 |
+ |
\hline |
| 529 |
+ |
20 - 30 & 0.9987 $\pm$ 0.0014 & 0.9944 $\pm$ 0.0040 \\ |
| 530 |
+ |
30 - 40 & 1.0007 $\pm$ 0.0006 & 1.0015 $\pm$ 0.0019 \\ |
| 531 |
+ |
40 - 50 & 1.0036 $\pm$ 0.0005 & 1.0096 $\pm$ 0.0015 \\ |
| 532 |
+ |
50 - 60 & 1.0029 $\pm$ 0.0010 & 1.0146 $\pm$ 0.0031 \\ |
| 533 |
+ |
60 - 80 & 1.0014 $\pm$ 0.0018 & 1.0057 $\pm$ 0.0060 \\ |
| 534 |
+ |
80 - 100 & 0.9949 $\pm$ 0.0043 & 1.0197 $\pm$ 0.0158 \\ |
| 535 |
+ |
100 - 150 & 1.0104 $\pm$ 0.0057 & 1.0154 $\pm$ 0.0198 \\ |
| 536 |
+ |
150 - 200 & 1.0087 $\pm$ 0.0134 & 1.1008 $\pm$ 0.0535 \\ |
| 537 |
+ |
200 - 300 & 0.9786 $\pm$ 0.0203 & 0.8277 $\pm$ 0.0879 \\ |
| 538 |
+ |
300 - 10000 & 1.0824 $\pm$ 0.0619 & 1.2500 $\pm$ 0.2795 \\ |
| 539 |
+ |
\hline |
| 540 |
+ |
\hline |
| 541 |
+ |
Scale Factor ISO & & \\ |
| 542 |
+ |
\pt\ range [GeV] & $|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 543 |
+ |
\hline |
| 544 |
+ |
20 - 30 & 0.9952 $\pm$ 0.0009 & 0.9950 $\pm$ 0.0016 \\ |
| 545 |
+ |
30 - 40 & 0.9984 $\pm$ 0.0003 & 0.9992 $\pm$ 0.0006 \\ |
| 546 |
+ |
40 - 50 & 0.9996 $\pm$ 0.0002 & 1.0009 $\pm$ 0.0003 \\ |
| 547 |
+ |
50 - 60 & 0.9995 $\pm$ 0.0003 & 1.0009 $\pm$ 0.0006 \\ |
| 548 |
+ |
60 - 80 & 1.0006 $\pm$ 0.0005 & 0.9985 $\pm$ 0.0012 \\ |
| 549 |
+ |
80 - 100 & 0.9999 $\pm$ 0.0014 & 1.0013 $\pm$ 0.0035 \\ |
| 550 |
+ |
100 - 150 & 1.0016 $\pm$ 0.0016 & 1.0108 $\pm$ 0.0036 \\ |
| 551 |
+ |
150 - 200 & 0.9989 $\pm$ 0.0042 & 1.0068 $\pm$ 0.0069 \\ |
| 552 |
+ |
200 - 300 & 0.9987 $\pm$ 0.0053 & 1.0000 $\pm$ 0.0000 \\ |
| 553 |
+ |
300 - 10000 & 0.9792 $\pm$ 0.0206 & 1.0000 $\pm$ 0.0000 \\ |
| 554 |
+ |
\hline |
| 555 |
+ |
\hline |
| 556 |
+ |
|
| 557 |
+ |
\end{tabular} |
| 558 |
+ |
\end{center} |
| 559 |
+ |
\end{table} |
| 560 |
+ |
|
| 561 |
+ |
\begin{figure}[hbt] |
| 562 |
+ |
\begin{center} |
| 563 |
+ |
\includegraphics[width=0.3\linewidth]{plots/el_id_njets0.pdf}% |
| 564 |
+ |
\includegraphics[width=0.3\linewidth]{plots/el_iso_njets0.pdf} |
| 565 |
+ |
\includegraphics[width=0.3\linewidth]{plots/el_id_njets1.pdf}% |
| 566 |
+ |
\includegraphics[width=0.3\linewidth]{plots/el_iso_njets1.pdf} |
| 567 |
+ |
\includegraphics[width=0.3\linewidth]{plots/el_id_njets2.pdf}% |
| 568 |
+ |
\includegraphics[width=0.3\linewidth]{plots/el_iso_njets2.pdf} |
| 569 |
+ |
\includegraphics[width=0.3\linewidth]{plots/el_id_njets3.pdf}% |
| 570 |
+ |
\includegraphics[width=0.3\linewidth]{plots/el_iso_njets3.pdf} |
| 571 |
+ |
\includegraphics[width=0.3\linewidth]{plots/el_id_njets4.pdf}% |
| 572 |
+ |
\includegraphics[width=0.3\linewidth]{plots/el_iso_njets4.pdf} |
| 573 |
+ |
\caption{ |
| 574 |
+ |
\label{fig:eltnpeff} Comparison of the electron identification and isolation efficiencies in data and MC for various jet multiplicity requirements. } |
| 575 |
+ |
\end{center} |
| 576 |
+ |
\end{figure} |
| 577 |
+ |
|
| 578 |
+ |
\clearpage |
| 579 |
+ |
|
| 580 |
+ |
|
| 581 |
+ |
\subsection{Trigger Efficiency Measurements} |
| 582 |
+ |
\label{sec:trg} |
| 583 |
+ |
|
| 584 |
+ |
In this section we measure the efficiencies of the single lepton triggers, HLT\_IsoMu24(\_eta2p1) for muons and HLT\_Ele27\_WP80 for electrons, using a tag-and-probe |
| 585 |
+ |
approach. The tag is required to pass the full offline analysis selection and have \pt\ $>$ 30 GeV, $|\eta|<2.1$, and be matched to the single |
| 586 |
+ |
lepton trigger. The probe is also required to pass the full offline analysis selection and have $|\eta|<2.1$, but the \pt\ requirement is relaxed to 20 GeV |
| 587 |
+ |
in order to measure the \pt\ turn-on curve. The tag-probe pair is |
| 588 |
+ |
required to have opposite-sign and an invariant mass in the range |
| 589 |
+ |
76--106 GeV. |
| 590 |
+ |
|
| 591 |
+ |
The measured trigger efficiencies are displayed in Fig.~\ref{fig:trigeff} and summarized in Table~\ref{tab:mutriggeff} (muons) and Table~\ref{tab:eltriggeff} (electrons). |
| 592 |
+ |
These trigger efficiencies are applied to the MC when used to predict data yields selected by single lepton triggers. |
| 593 |
+ |
|
| 594 |
+ |
|
| 595 |
+ |
\begin{figure}[!ht] |
| 596 |
+ |
\begin{center} |
| 597 |
+ |
\begin{tabular}{cc} |
| 598 |
+ |
\includegraphics[width=0.4\textwidth]{plots/mutrig_pt_etabins.pdf} & |
| 599 |
+ |
\includegraphics[width=0.4\textwidth]{plots/eltrig_pt_etabins.pdf} \\ |
| 600 |
+ |
\end{tabular} |
| 601 |
+ |
\caption{\label{fig:trigeff} |
| 602 |
+ |
Efficiency for the single muon trigger HLT\_IsoMu24(\_eta2p1) (left) and single electron trigger HLT\_Ele27\_WP80 (right) as a function of lepton \pt, |
| 603 |
+ |
for several bins in lepton $|\eta|$. |
| 604 |
+ |
} |
| 605 |
+ |
\end{center} |
| 606 |
+ |
\end{figure} |
| 607 |
+ |
|
| 608 |
+ |
\clearpage |
| 609 |
+ |
|
| 610 |
+ |
\begin{table}[htb] |
| 611 |
+ |
\begin{center} |
| 612 |
+ |
\footnotesize |
| 613 |
+ |
\caption{\label{tab:mutriggeff} |
| 614 |
+ |
Summary of the single muon trigger efficiency HLT\_IsoMu24(\_eta2p1). Uncertainties are statistical.} |
| 615 |
+ |
\begin{tabular}{c|c|c|c} |
| 616 |
+ |
|
| 617 |
+ |
% Selection : (((((((((abs(tagAndProbeMass-91)<15)&&(qProbe*qTag<0))&&((eventSelection&2)==2))&&(HLT_IsoMu24_tag > 0))&&(tag->pt()>30.0))&&(abs(tag->eta())<2.1))&&(probe->pt()>20))&&(abs(probe->eta())<2.1))&&((leptonSelection&65536)==65536))&&((leptonSelection&131072)==131072) |
| 618 |
+ |
% Probe trigger : HLT_IsoMu24_probe > 0 |
| 619 |
+ |
% Total data yield : 5161723 |
| 620 |
+ |
|
| 621 |
+ |
\hline |
| 622 |
+ |
\hline |
| 623 |
+ |
\pt\ range [GeV] & $|\eta|<0.8$ & $0.8<|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 624 |
+ |
\hline |
| 625 |
+ |
20 - 22 & 0.00 $\pm$ 0.000 & 0.00 $\pm$ 0.000 & 0.00 $\pm$ 0.000 \\ |
| 626 |
+ |
22 - 24 & 0.03 $\pm$ 0.001 & 0.05 $\pm$ 0.001 & 0.11 $\pm$ 0.002 \\ |
| 627 |
+ |
24 - 26 & 0.87 $\pm$ 0.002 & 0.78 $\pm$ 0.002 & 0.76 $\pm$ 0.003 \\ |
| 628 |
+ |
26 - 28 & 0.90 $\pm$ 0.001 & 0.81 $\pm$ 0.002 & 0.78 $\pm$ 0.002 \\ |
| 629 |
+ |
28 - 30 & 0.91 $\pm$ 0.001 & 0.81 $\pm$ 0.002 & 0.79 $\pm$ 0.002 \\ |
| 630 |
+ |
30 - 32 & 0.91 $\pm$ 0.001 & 0.81 $\pm$ 0.001 & 0.80 $\pm$ 0.002 \\ |
| 631 |
+ |
32 - 34 & 0.92 $\pm$ 0.001 & 0.82 $\pm$ 0.001 & 0.80 $\pm$ 0.002 \\ |
| 632 |
+ |
34 - 36 & 0.93 $\pm$ 0.001 & 0.82 $\pm$ 0.001 & 0.81 $\pm$ 0.001 \\ |
| 633 |
+ |
36 - 38 & 0.93 $\pm$ 0.001 & 0.83 $\pm$ 0.001 & 0.81 $\pm$ 0.001 \\ |
| 634 |
+ |
38 - 40 & 0.93 $\pm$ 0.001 & 0.83 $\pm$ 0.001 & 0.82 $\pm$ 0.001 \\ |
| 635 |
+ |
40 - 50 & 0.94 $\pm$ 0.000 & 0.84 $\pm$ 0.000 & 0.82 $\pm$ 0.001 \\ |
| 636 |
+ |
50 - 60 & 0.95 $\pm$ 0.000 & 0.84 $\pm$ 0.001 & 0.83 $\pm$ 0.001 \\ |
| 637 |
+ |
60 - 80 & 0.95 $\pm$ 0.001 & 0.84 $\pm$ 0.002 & 0.83 $\pm$ 0.002 \\ |
| 638 |
+ |
80 - 100 & 0.94 $\pm$ 0.002 & 0.84 $\pm$ 0.004 & 0.83 $\pm$ 0.006 \\ |
| 639 |
+ |
100 - 150 & 0.94 $\pm$ 0.003 & 0.84 $\pm$ 0.005 & 0.83 $\pm$ 0.008 \\ |
| 640 |
+ |
150 - 200 & 0.93 $\pm$ 0.006 & 0.84 $\pm$ 0.011 & 0.82 $\pm$ 0.018 \\ |
| 641 |
+ |
$>$200 & 0.92 $\pm$ 0.010 & 0.82 $\pm$ 0.017 & 0.82 $\pm$ 0.031 \\ |
| 642 |
+ |
\hline |
| 643 |
+ |
\hline |
| 644 |
+ |
|
| 645 |
+ |
\end{tabular} |
| 646 |
+ |
\end{center} |
| 647 |
+ |
\end{table} |
| 648 |
+ |
|
| 649 |
+ |
\begin{table}[htb] |
| 650 |
+ |
\begin{center} |
| 651 |
+ |
\footnotesize |
| 652 |
+ |
\caption{\label{tab:eltriggeff} |
| 653 |
+ |
Summary of the single electron trigger efficiency HLT\_Ele27\_WP80. Uncertainties are statistical.} |
| 654 |
+ |
\begin{tabular}{c|c|c} |
| 655 |
+ |
|
| 656 |
+ |
% Selection : (((((((((abs(tagAndProbeMass-91)<15)&&(qProbe*qTag<0))&&((eventSelection&1)==1))&&(HLT_Ele27_WP80_tag > 0))&&(tag->pt()>30.0))&&(abs(tag->eta())<2.1))&&(probe->pt()>20))&&(abs(probe->eta())<2.1))&&((leptonSelection&8)==8))&&((leptonSelection&16)==16) |
| 657 |
+ |
% Probe trigger : HLT_Ele27_WP80_probe > 0 |
| 658 |
+ |
% Total data yield : 3405966 |
| 659 |
+ |
|
| 660 |
+ |
\hline |
| 661 |
+ |
\hline |
| 662 |
+ |
\pt\ range [GeV] & $|\eta|<1.5$ & $1.5<|\eta|<2.1$ \\ |
| 663 |
+ |
\hline |
| 664 |
+ |
20 - 22 & 0.00 $\pm$ 0.000 & 0.00 $\pm$ 0.000 \\ |
| 665 |
+ |
22 - 24 & 0.00 $\pm$ 0.000 & 0.00 $\pm$ 0.001 \\ |
| 666 |
+ |
24 - 26 & 0.00 $\pm$ 0.000 & 0.02 $\pm$ 0.001 \\ |
| 667 |
+ |
26 - 28 & 0.08 $\pm$ 0.001 & 0.18 $\pm$ 0.003 \\ |
| 668 |
+ |
28 - 30 & 0.61 $\pm$ 0.002 & 0.50 $\pm$ 0.004 \\ |
| 669 |
+ |
30 - 32 & 0.86 $\pm$ 0.001 & 0.63 $\pm$ 0.003 \\ |
| 670 |
+ |
32 - 34 & 0.88 $\pm$ 0.001 & 0.68 $\pm$ 0.003 \\ |
| 671 |
+ |
34 - 36 & 0.90 $\pm$ 0.001 & 0.70 $\pm$ 0.002 \\ |
| 672 |
+ |
36 - 38 & 0.91 $\pm$ 0.001 & 0.72 $\pm$ 0.002 \\ |
| 673 |
+ |
38 - 40 & 0.92 $\pm$ 0.001 & 0.74 $\pm$ 0.002 \\ |
| 674 |
+ |
40 - 50 & 0.94 $\pm$ 0.000 & 0.76 $\pm$ 0.001 \\ |
| 675 |
+ |
50 - 60 & 0.95 $\pm$ 0.000 & 0.77 $\pm$ 0.002 \\ |
| 676 |
+ |
60 - 80 & 0.96 $\pm$ 0.001 & 0.78 $\pm$ 0.003 \\ |
| 677 |
+ |
80 - 100 & 0.96 $\pm$ 0.002 & 0.80 $\pm$ 0.008 \\ |
| 678 |
+ |
100 - 150 & 0.96 $\pm$ 0.002 & 0.79 $\pm$ 0.010 \\ |
| 679 |
+ |
150 - 200 & 0.97 $\pm$ 0.004 & 0.76 $\pm$ 0.026 \\ |
| 680 |
+ |
$>$200 & 0.97 $\pm$ 0.005 & 0.81 $\pm$ 0.038 \\ |
| 681 |
+ |
\hline |
| 682 |
+ |
\hline |
| 683 |
+ |
|
| 684 |
+ |
\end{tabular} |
| 685 |
+ |
\end{center} |
| 686 |
+ |
\end{table} |
| 687 |
+ |
|
| 688 |
+ |
\clearpage |
