| 1 |
|
\section{Event Preselection} |
| 2 |
|
\label{sec:eventSel} |
| 3 |
< |
{\color{red} This needs to be fixed up -- probably many mistakes present.}\\ |
| 3 |
> |
%{\color{red} This needs to be fixed up -- probably many mistakes present.}\\ |
| 4 |
|
As mentioned in the introduction, the preselection is based on the |
| 5 |
|
$t\bar{t}$ analysis. We select events with two opposite sign isolated |
| 6 |
|
leptons ($ee$, $e\mu$, or $\mu\mu$); one of the leptons must |
| 7 |
|
have $P_T > 20$ GeV, |
| 8 |
< |
the other one must have $P_T > 10$ GeV; there must be two JPT |
| 9 |
< |
jets of $P_T > 30$ GeV and $|\eta| <$ {\color{red} xx}; the scalar sum of the |
| 10 |
< |
$P_T$ of all such jets must exceed 100 GeV; finally $\met > 50$ GeV |
| 11 |
< |
(we use tcMet). More details are given in the subsection below. |
| 8 |
> |
the other one must have $P_T > 10$ GeV. In case of events with |
| 9 |
> |
more than two such leptons, we select the pair that maximizes the scalar |
| 10 |
> |
sum of lepton $P_T$'s. |
| 11 |
> |
There must be two JPT |
| 12 |
> |
jets of $P_T > 30$ GeV and $|\eta| < 2.5$; the scalar sum of the |
| 13 |
> |
$P_T$ of all such jets must exceed 100 GeV; jets must pass |
| 14 |
> |
{\tt caloJetId} and be separated by $\Delta R >$ 0.4 from the |
| 15 |
> |
two selected leptons. |
| 16 |
> |
%%%TO BE REPLACED |
| 17 |
> |
%{\color{red}The 11 pb iteration only does this for the two selected |
| 18 |
> |
%leptons.} |
| 19 |
> |
% |
| 20 |
> |
Finally $\met > 50$ GeV (we use tcMet). More details are given in the subsections below. |
| 21 |
|
|
| 22 |
|
\subsection{Event Cleanup} |
| 23 |
|
\label{sec:cleanup} |
| 41 |
|
requirements: |
| 42 |
|
\begin{itemize} |
| 43 |
|
|
| 44 |
< |
\item $|\eta| < 2.5$. |
| 44 |
> |
\item $|\eta| < 2.4$. |
| 45 |
|
|
| 46 |
|
\item Global Muon and Tracker Muon. |
| 47 |
|
|
| 59 |
|
\item At least one of the hits from the |
| 60 |
|
standalone muon must be used in the global fit. |
| 61 |
|
|
| 62 |
+ |
%\item Require tracker $\Delta P_T/P_T < 0.1$. This cut was not in the original top analysis. |
| 63 |
+ |
%It is motivated by the observation of |
| 64 |
+ |
%poorly measured muons in data with large |
| 65 |
+ |
%relative $P_T$ uncertainty, giving significant contributions to the \met. |
| 66 |
+ |
%{\color{red} This is not applied to the 11 pb iteration.} |
| 67 |
+ |
|
| 68 |
+ |
|
| 69 |
|
\end{itemize} |
| 70 |
|
|
| 71 |
|
|
| 109 |
|
where an additional GeneralTrack is found with $Dist < 0.02$ cm |
| 110 |
|
and $\Delta \cot \theta < 0.02$ is vetoed\cite{ref:conv}. |
| 111 |
|
|
| 112 |
< |
\item Cleaning for ECAL spike (aka Swiss-Cross cleaning) has been applied. |
| 113 |
< |
{\color{red}Is this true?} |
| 112 |
> |
\item Cleaning for ECAL spike (aka Swiss-Cross cleaning) has been applied |
| 113 |
> |
at the reconstruction level (CMSSW 38x). |
| 114 |
|
|
| 115 |
|
\end{itemize} |
| 116 |
|
|
| 117 |
< |
\subsection{Z veto} |
| 117 |
> |
\subsection{Invariant mass requirement} |
| 118 |
|
\label{sec:zveto} |
| 119 |
|
|
| 120 |
|
We remove $e^+e^-$ and $\mu^+ \mu^-$ events with invariant |
| 121 |
< |
mass between 76 and 105 GeV. |
| 122 |
< |
|
| 121 |
> |
mass between 76 and 106 GeV. We also remove events |
| 122 |
> |
with invariant mass $<$ 10 GeV. |
| 123 |
|
|
| 124 |
|
\subsection{Trigger Selection} |
| 125 |
|
\label{sec:trigSel} |
| 131 |
|
to each event, based on the trigger efficiencies measured on data. |
| 132 |
|
Trigger efficiency weights are very close to 1. |
| 133 |
|
|
| 134 |
< |
For data, we require the logical OR of all (or most?) unprescaled |
| 135 |
< |
single and double lepton triggers that were deployed during the 2010 |
| 136 |
< |
run. These are: |
| 137 |
< |
{\color{red} Here we need to list the triggers, somehow.} |
| 134 |
> |
%For data, we require the logical OR of all (or most?) unprescaled |
| 135 |
> |
%single and double lepton triggers that were deployed during the 2010 |
| 136 |
> |
%run. These are: |
| 137 |
> |
%{\color{red} Here we need to list the triggers, somehow.} |
| 138 |
> |
|
| 139 |
> |
For data, we use a cocktail of unprescaled single |
| 140 |
> |
and double lepton triggers. An event |
| 141 |
> |
in the $ee$ final state is required to pass at least 1 |
| 142 |
> |
single- or double-electron trigger, a |
| 143 |
> |
$\mu\mu$ event is required to pass at least 1 single |
| 144 |
> |
or double-muon trigger, while an $e\mu$ event |
| 145 |
> |
is required to pass at least 1 single-muon, single-electron, |
| 146 |
> |
or $e-\mu$ cross trigger. |
| 147 |
> |
% We currently |
| 148 |
> |
% do not require MC events to pass any triggers. |
| 149 |
|
|
| 150 |
+ |
\begin{itemize} |
| 151 |
+ |
\item single-muon triggers |
| 152 |
+ |
\begin{itemize} |
| 153 |
+ |
\item \verb=HLT_Mu5= |
| 154 |
+ |
\item \verb=HLT_Mu7= |
| 155 |
+ |
\item \verb=HLT_Mu9= |
| 156 |
+ |
\item \verb=HLT_Mu11= |
| 157 |
+ |
\item \verb=HLT_Mu13_v1= |
| 158 |
+ |
\item \verb=HLT_Mu15_v1= |
| 159 |
+ |
\item \verb=HLT_Mu17_v1= |
| 160 |
+ |
\item \verb=HLT_Mu19_v1= |
| 161 |
+ |
\end{itemize} |
| 162 |
+ |
\item double-muon triggers |
| 163 |
+ |
\begin{itemize} |
| 164 |
+ |
\item \verb=HLT_DoubleMu3= |
| 165 |
+ |
\item \verb=HLT_DoubleMu3_v2= |
| 166 |
+ |
\item \verb=HLT_DoubleMu5_v1= |
| 167 |
+ |
\end{itemize} |
| 168 |
+ |
\item single-electron triggers |
| 169 |
+ |
\begin{itemize} |
| 170 |
+ |
\item \verb=HLT_Ele10_SW_EleId_L1R= |
| 171 |
+ |
\item \verb=HLT_Ele10_LW_EleId_L1R= |
| 172 |
+ |
\item \verb=HLT_Ele10_LW_L1R= |
| 173 |
+ |
\item \verb=HLT_Ele10_SW_L1R= |
| 174 |
+ |
\item \verb=HLT_Ele15_SW_CaloEleId_L1R= |
| 175 |
+ |
\item \verb=HLT_Ele15_SW_EleId_L1R= |
| 176 |
+ |
\item \verb=HLT_Ele15_SW_L1R= |
| 177 |
+ |
\item \verb=HLT_Ele15_LW_L1R= |
| 178 |
+ |
\item \verb=HLT_Ele17_SW_TightEleId_L1R= |
| 179 |
+ |
\item \verb=HLT_Ele17_SW_TighterEleId_L1R_v1= |
| 180 |
+ |
\item \verb=HLT_Ele17_SW_CaloEleId_L1R= |
| 181 |
+ |
\item \verb=HLT_Ele17_SW_EleId_L1R= |
| 182 |
+ |
\item \verb=HLT_Ele17_SW_LooseEleId_L1R= |
| 183 |
+ |
\item \verb=HLT_Ele17_SW_TighterEleIdIsol_L1R_v2= |
| 184 |
+ |
\item \verb=HLT_Ele20_SW_L1R= |
| 185 |
+ |
\item \verb=HLT_Ele22_SW_TighterEleId_L1R_v2= |
| 186 |
+ |
\item \verb=HLT_Ele32_SW_TightCaloEleIdTrack_L1R_v1= |
| 187 |
+ |
\item \verb=HLT_Ele32_SW_TighterEleId_L1R_v2= |
| 188 |
+ |
\item \verb=HLT_Ele27_SW_TightCaloEleIdTrack_L1R_v1= |
| 189 |
+ |
\item \verb=HLT_Ele22_SW_TighterCaloIdIsol_L1R_v2= |
| 190 |
+ |
\item \verb=HLT_Ele22_SW_TighterEleId_L1R_v3= |
| 191 |
+ |
\item \verb=HLT_Ele22_SW_TighterCaloIdIsol_L1R_v2= |
| 192 |
+ |
\end{itemize} |
| 193 |
+ |
\item double-electron triggers |
| 194 |
+ |
\begin{itemize} |
| 195 |
+ |
\item \verb=HLT_DoubleEle15_SW_L1R_v1= |
| 196 |
+ |
\item \verb=HLT_DoubleEle17_SW_L1R_v1= |
| 197 |
+ |
\item \verb=HLT_Ele17_SW_TightCaloEleId_Ele8HE_L1R_v1= |
| 198 |
+ |
\item \verb=HLT_Ele17_SW_TightCaloEleId_SC8HE_L1R_v1= |
| 199 |
+ |
\item \verb=HLT_DoubleEle10_SW_L1R= |
| 200 |
+ |
\item \verb=HLT_DoubleEle5_SW_L1R= |
| 201 |
+ |
\end{itemize} |
| 202 |
+ |
\item e-$\mu$ cross triggers |
| 203 |
+ |
\begin{itemize} |
| 204 |
+ |
\item \verb=HLT_Mu5_Ele5_v1= |
| 205 |
+ |
\item \verb=HLT_Mu5_Ele9_v1= |
| 206 |
+ |
\item \verb=HLT_Mu11_Ele8_v1= |
| 207 |
+ |
\item \verb=HLT_Mu8_Ele8_v1= |
| 208 |
+ |
\item \verb=HLT_Mu5_Ele13_v2= |
| 209 |
+ |
\item \verb=HLT_Mu5_Ele17_v1= |
| 210 |
+ |
\end{itemize} |
| 211 |
+ |
\end{itemize} |
