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noimg: Summary of \Zgll\ and jet selection criteria.~: Numbers of events expected and observed in data that pass the \Zeejets\ and \Zmmjets\ selections as a function of the inclusive jet multiplicity. The expected numbers are rounded according to the combined statistical and systematic uncertainty. \alp\ has been used to simulate the signal events.

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Numbers of events observed in data and predicted in simulation that pass the \hspace{2cm} \Zeejets\ and \Zmmjets\ selection as a function of the invariant mass of the \Zzero\ candidate, (a) \mee\ and (b) \mmm , for events with at least one jet with $\ptj > 30 \gev$ and $\ayj <4.4$, and as a function of the inclusive jet multiplicity, \nj , in (c) di-electron and (d) di-muon events. The individual contributions of the various backgrounds are also shown, as detailed in the legend. The hatched band corresponds to the combined statistical and systematic uncertainty on the prediction, obtained using \alp\ to model the \Zjets\ process. The error bars on each data point show the statistical uncertainty. The bottom panel shows the corresponding MC/data ratio. The shaded band corresponds to the total systematic uncertainty and the error bars to the statistical uncertainty on the MC/data ratio.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the inclusive jet multiplicity, \nj , and (b) ratio of cross sections for successive inclusive jet multiplicities. The data are compared to NLO pQCD predictions from \bhs\ corrected to the particle level, and the \alp , \she\ and \mca\ event generators (see legend for details). The error bars indicate the statistical uncertainty on the data, and the hatched (shaded) bands the statistical and systematic uncertainties on data (prediction) added in quadrature.Caption not extracted

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(a) Ratio of cross sections for successive exclusive jet multiplicities, \nj , in events selected with the standard selection and (b) in events with at least one jet with $\ptj > 150 \gev$ and $\ayj<4.4$. The data are compared to NLO pQCD predictions from \bhs\ corrected to the particle level, and the \alp , \she\ and \mca\ event generators (see legend for details). The error bars indicate the statistical uncertainty on the data, and the hatched (shaded) bands the statistical and systematic uncertainties on data (prediction) added in quadrature. The shaded bands on the theory calculations show the systematic uncertainty excluding the scale uncertainty (dark shaded) and the total systematic uncertainties using the naive approach (medium shaded) and the nominal approach (light shaded) to derive the scale uncertainty (see section~\ref{sec:Theory}). The figures include (a) a linear fit $\Rmulti = R_o+\frac{{\rm d}R}{{\rm d}n}\cdot n$ in the range $R_{2/1} <R_{(n+1)/n}<R_{5/4} $ and (b) a Poisson fit $\Rmulti = \frac{\bar{n}}{n}$ to the data points, with the free parameters $R_o$, $\frac{{\rm d}R}{{\rm d}n}$ and $\bar{n}$.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the exclusive jet multiplicity, \nj , and (b) ratio of the cross sections for two successive multiplicities, in events passing the VBF preselection (at least two jets with $\ptj > 30 \gev$ and $\ayj<4.4$ and $\mjj >350\gev$ and $\dyjj >3.0$ for the two leading jets). The other details are as in Figure~\ref{fig:ElMuComb1}.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the transverse momentum, \ptj , of the leading jet for events with at least one jet with $\ptj > 30 \gev$ and $\ayj<4.4$ in the final state and (b) as a function of \ptj\ of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive \Zgll\ cross section. The other details are as in Figure~\ref{fig:ElMuComb0}.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the transverse momentum, \ptj , of the third leading jet for events with at least three jets with $\ptj > 30 \gev$ and $\ayj<4.4$ in the final state and (b) as a function of \ptj\ of the fourth leading jet for events with at least four jets. The cross sections are normalized to the inclusive \Zgll\ cross section. The other details are as in Figure~\ref{fig:ElMuComb0}.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the jet transverse momentum, \ptj , for events with exactly one jet with $\ptj > 30 \gev$ and $\ayj<4.4$ in the final state and (b) as a function of the ratio of \ptj\ of the second leading jet to \ptj\ of the leading jet for events with at least two jets. The cross sections are normalized to the inclusive \Zgll\ cross section. The other details are as in Figure~\ref{fig:ElMuComb1}.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the transverse momentum of the \Zzero\ candidate, \ptll , in events with at least one jet with $\ptj > 30 \gev$ and $\ayj<4.4$ in the final state and (b) as a function of \ptll\ in events with exactly one jet. The cross sections are normalized to the inclusive \Zgll\ cross section. The other details are as in Figure~\ref{fig:ElMuComb1}.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the absolute value of the rapidity, \ayj , of the leading jet for events with at least one jet with $\ptj > 30 \gev$ and $\ayj <4.4$ in the final state and (b) as a function of \ayj\ of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive \Zgll\ cross section. The other details are as in Figure~\ref{fig:ElMuComb0}.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the absolute value of the rapidity, \ayj , of the third jet for events with at least three jets with $\ptj > 30 \gev$ and $\ayj <4.4$ in the final state and (b) as a function of \ayj\ of the fourth jet for events with at least four jets. The cross sections are normalized to the inclusive \Zgll\ cross section. The other details are as in Figure~\ref{fig:ElMuComb0}.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the separation in rapidity, \dyjj , between the two leading jets and (b) as a function of the invariant mass of the two leading jets, \mjj , for events with at least two jets with $\ptj > 30 \gev$ and $\ayj <4.4$ in the final state. The cross sections are normalized to the inclusive \Zgll\ cross section. The other details are as in Figure~\ref{fig:ElMuComb0}.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the distance in $\phi$ between the two leading jets, \dpjj , and (b) as a function of the distance \drjj\ between the two leading jets, for events with at least two jets with $\ptj > 30 \gev$ and $\ayj <4.4$ in the final state. The cross sections are normalized to the inclusive \Zgll\ cross section. The other details are as in Figure~\ref{fig:ElMuComb0}.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the transverse momentum, \ptj , of the third jet and (b) as a function of the absolute value of the rapidity, \ayj, of the third jet, in events passing the VBF preselection (at least two jets with $\ptj > 30 \gev$ and $\ayj <4.4$ and $\mjj >350\gev$ and $\dyjj >3.0$ for the two leading jets). The cross sections are normalized to the inclusive \Zgll\ cross section. The other details are as in Figure~\ref{fig:ElMuComb0}.Caption not extracted

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Fraction of events that pass a veto on a central ($|\eta| < 2.4$) third jet after VBF preselection (at least two jets with $\ptj > 30 \gev$ and $\ayj <4.4$, $\mjj >350\gev$ and $\,\,\,\,\,\,\,\,\,$ $\dyjj >3.0$ for the two leading jets) as a function of the third jet \ptj\ threshold, min \ptj , (a) in the electron channel and (b) in the muon channel, measured in data and predicted by the generators \alp\ and \she\ (see legend for details). The data points indicate the measured distribution after subtraction of electroweak and multi-jet background. The hatched bands correspond to the combined statistical and systematic uncertainty on the \Zjets\ prediction, using \alp\ to derive the systematic uncertainties. The error bars on each data point show the combined statistical and systematic uncertainty on the data. The bottom panel shows the MC/data ratio. The shaded band corresponds to the total systematic uncertainty and the error bars to the statistical uncertainty on the MC/data ratio.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the scalar \pt\ sum of the leptons and the jets, \htj , and (b) as a function of the scalar \pt\ sum of the jets, \stj , in events with at least one jet with $\ptj > 30 \gev$ and $\ayj <4.4$ in the final state. The cross sections are normalized to the inclusive \Zgll\ cross section. The other details are as in Figure~\ref{fig:ElMuComb0}.Caption not extracted

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(a) Average number of jets, ${\tt <}\nj {\tt >}$, in \Zeejets\ events as a function of the scalar \pt\ sum of the leptons and the jets, \htj , and (b) average number of jets in \Zmmjets\ events as a function of the transverse momentum of the \Zzero\ boson candidate, \ptll , measured in data and predicted by the generators \alp\ and \she\ (see legend for details). The data points indicate the measured distribution after subtraction of electroweak and multi-jet background. The hatched band corresponds to the combined statistical and systematic uncertainty on the \Zjets\ prediction, modelled with \alp . The error bars on each data point show the combined statistical and systematic uncertainty on the data. The bottom panel shows the MC/data ratio. The shaded band corresponds to the total systematic uncertainty and the error bars to the statistical uncertainty on the MC/data ratio.Caption not extracted

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(a) Measured cross section for \Zlljets\ as a function of the scalar \pt\ sum of the leptons and the jets, \htj , and (b) as a function of the transverse momentum of the \Zzero\ candidate, \ptll , in events with at least one jet with $\ptj > 30 \gev$ and $\ayj<4.4$ in the final state. The cross sections are normalized to the inclusive \Zgll\ cross section. The unfolded data are compared to NLO pQCD predictions from \bhs , obtained by adding the exclusive \Zljex\ and the inclusive \Zljj\ calculations and corrected to the particle level. The error bars indicate the statistical uncertainty on the data, and the hatched (shaded) bands the statistical and systematic uncertainties on data (prediction) added in quadrature.Caption not extracted