| 78 |
|
|
| 79 |
|
\begin{equation} |
| 80 |
|
R_{\mu e} = \sqrt{\frac{N_{\mu\mu}^{\rm{offline}}}{N_{ee}^{\rm{offline}}}} = \sqrt{\frac{N_{\mu\mu}^{\rm{trig}}/\epsilon_{\mu\mu}^{\rm{trig}}}{N_{ee}^{\rm{trig}}/\epsilon_{ee}^{\rm{trig}}}} |
| 81 |
< |
= \sqrt{\frac{297240/0.88}{233805/0.95}} = 1.17\pm0.07. |
| 81 |
> |
= \sqrt{\frac{304953/0.88}{239661/0.95}} = 1.17\pm0.07. |
| 82 |
|
\end{equation} |
| 83 |
|
|
| 84 |
|
Here we have used the Z$\to\mu\mu$ and Z$\to$ee yields from Table~\ref{table:zyields_2j} and the trigger efficiencies quoted in Sec.~\ref{sec:datasets}. |
| 856 |
|
\end{itemize} |
| 857 |
|
|
| 858 |
|
The data and MC yields passing the above selection are in Table~\ref{tab:wz}. |
| 859 |
< |
The inclusive yields (without any jet requirements) agree within 13\%, which is consistent within |
| 860 |
< |
the uncertainty in the CMS measured WZ cross section (17\%). A data vs. MC comparison of kinematic |
| 859 |
> |
The inclusive yields (without any jet requirements) agree within 16\%, which is consistent within |
| 860 |
> |
the $\approx$15\% uncertainty in the theory prediction for the WZ cross section. A data vs. MC comparison of kinematic |
| 861 |
|
distributions (jet multiplicity, \MET, Z \pt) is given in Fig.~\ref{fig:wz}. High \MET\ |
| 862 |
|
values in WZ and ZZ events arise from highly boosted W or Z bosons that decay leptonically, |
| 863 |
|
and we therefore check that the MC does a reasonable job of reproducing the \pt distributions of the |
| 864 |
|
leptonically decaying \Z. While the inclusive WZ yields are in reasonable agreement, we observe |
| 865 |
|
an excess in data in events with at least 2 jets, corresponding to the jet multiplicity requirement |
| 866 |
< |
in our preselection. We observe 106 events in data while the MC predicts $62\pm1.5$~(stat), representing an excess of 71\%, |
| 867 |
< |
as indicated in Table~\ref{tab:wz2j}. |
| 868 |
< |
This excess will be studied further. For the time being, based on these studies we currently assess an uncertainty of 70\% on the WZ yield. |
| 869 |
< |
A data vs. MC comparison of several kinematic quantities in the sample with 3 leptons and at least 2 jets can be found in App.~\ref{app:WZ}. |
| 866 |
> |
in our preselection. We observe 200 events in data while the MC predicts $130\pm3.1$~(stat), representing an excess of 53\%, |
| 867 |
> |
as indicated in Table~\ref{tab:wz2j}, and we therefore assess an uncertainty of 50\% on the WZ background. |
| 868 |
> |
%We note that the contributions from fake leptons and from \zjets\ with mismeasured \MET\ |
| 869 |
> |
%is underestimated in the MC. |
| 870 |
> |
%This excess will be studied further. For the time being, based on these studies we currently assess an uncertainty of 50\% on the WZ yield. |
| 871 |
> |
%A data vs. MC comparison of several kinematic quantities in the sample with 3 leptons and at least 2 jets can be found in App.~\ref{app:WZ}. |
| 872 |
|
|
| 873 |
|
\begin{comment} |
| 874 |
|
We note some possible contributions to this discrepancy: |
| 1038 |
|
|
| 1039 |
|
The data and MC yields passing the above selection are in Table~\ref{tab:zz}. |
| 1040 |
|
In this ZZ-dominated sample we observe good agreement between the data yield and the MC prediction. |
| 1041 |
< |
After requiring 2 jets (corresponding to the requirement in the analysis selection), we observe 4 events |
| 1042 |
< |
in data and the MC predicts $6.6\pm0.1$ events. Due to the limited statistical precision we assign an uncertainty |
| 1043 |
< |
fo 50\% on the ZZ yield. |
| 1041 |
> |
After requiring 2 jets (corresponding to the requirement in the analysis selection), we observe 14 events |
| 1042 |
> |
in data and the MC predicts $13.2\pm0.2$ events. Due to the limited statistical precision we assign an uncertainty |
| 1043 |
> |
of 50\% on the ZZ yield. |
| 1044 |
|
|
| 1045 |
|
\begin{table}[htb] |
| 1046 |
|
\begin{center} |
| 1078 |
|
|
| 1079 |
|
\begin{figure}[tbh] |
| 1080 |
|
\begin{center} |
| 1081 |
< |
\includegraphics[width=1\linewidth]{plots/ZZ_eemm_92fb.pdf} |
| 1081 |
> |
\includegraphics[width=1\linewidth]{plots/ZZ_19fb.pdf} |
| 1082 |
|
\caption{\label{fig:zz}\protect |
| 1083 |
|
Data vs. MC comparisons for the ZZ selection discussed in the text for \lumi. |
| 1084 |
|
The number of jets, missing transverse energy, and Z boson transverse momentum are displayed. |
| 1086 |
|
\end{center} |
| 1087 |
|
\end{figure} |
| 1088 |
|
|
| 1089 |
+ |
\begin{comment} |
| 1090 |
+ |
Loading babies at : ../output/V00-02-00 |
| 1091 |
+ |
Using selection : ((((((leptype==0 && (ee==1 || isdata==0))||(leptype==1 && (mm==1 || isdata==0)))||(leptype==2 && (em==1||me==1||isdata==0)))&&(csc==0 && hbhe==1 && hcallaser==1 && ecaltp==1 && trkfail==1 && eebadsc==1 && hbhenew==1))&&(lep1.pt()>20.0 && lep2.pt()>20.0))&&(nlep==4 && lep3.pt()>20.0 && lep4.pt()>20.0))&&(dilmass>81 && dilmass<101) |
| 1092 |
+ |
Using weight : weight * 19.3 * trgeff * vtxweight |
| 1093 |
+ |
Plotting var njets flavor sf |
| 1094 |
+ |
compareDataMC : apply trigeff 1 |
| 1095 |
+ |
|
| 1096 |
+ |
MC yield VVV 1.40 |
| 1097 |
+ |
MC yield ttV 2.64 |
| 1098 |
+ |
MC yield single top 0.00 |
| 1099 |
+ |
MC yield WW 0.00 |
| 1100 |
+ |
MC yield ttbar 0.00 |
| 1101 |
+ |
SCALING ZJETS BY 111/946 |
| 1102 |
+ |
MC yield zjets 0.00 |
| 1103 |
+ |
MC yield WZ 0.27 |
| 1104 |
+ |
SCALING ZJETS BY 1.92 |
| 1105 |
+ |
MC yield ZZ 125.99 |
| 1106 |
+ |
MC total yield 130.31 |
| 1107 |
+ |
data yield 136 |
| 1108 |
+ |
Plotting var pfmet flavor sf |
| 1109 |
+ |
compareDataMC : apply trigeff 1 |
| 1110 |
+ |
MC yield VVV 1.40 |
| 1111 |
+ |
MC yield ttV 2.64 |
| 1112 |
+ |
MC yield single top 0.00 |
| 1113 |
+ |
MC yield WW 0.00 |
| 1114 |
+ |
MC yield ttbar 0.00 |
| 1115 |
+ |
SCALING ZJETS BY 111/946 |
| 1116 |
+ |
MC yield zjets 0.00 |
| 1117 |
+ |
MC yield WZ 0.27 |
| 1118 |
+ |
SCALING ZJETS BY 1.92 |
| 1119 |
+ |
MC yield ZZ 126.00 |
| 1120 |
+ |
MC total yield 130.32 |
| 1121 |
+ |
data yield 136 |
| 1122 |
+ |
Plotting var dileppt flavor sf |
| 1123 |
+ |
compareDataMC : apply trigeff 1 |
| 1124 |
+ |
MC yield VVV 1.40 |
| 1125 |
+ |
MC yield ttV 2.64 |
| 1126 |
+ |
MC yield single top 0.00 |
| 1127 |
+ |
MC yield WW 0.00 |
| 1128 |
+ |
MC yield ttbar 0.00 |
| 1129 |
+ |
SCALING ZJETS BY 111/946 |
| 1130 |
+ |
MC yield zjets 0.00 |
| 1131 |
+ |
MC yield WZ 0.27 |
| 1132 |
+ |
SCALING ZJETS BY 1.92 |
| 1133 |
+ |
MC yield ZZ 126.00 |
| 1134 |
+ |
MC total yield 130.33 |
| 1135 |
+ |
data yield 136 |
| 1136 |
+ |
\end{comment} |
| 1137 |
|
|
| 1138 |
|
|
| 1139 |
|
|
