Measurement of the production cross section of jets in association with a Z boson in $pp$ collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
Measurements of the production of jets of particles in association with a Z boson in pp collisions at $\sqrt{s}$ = 7 TeV are presented, using data corresponding to an integrated luminosity of 4.6/fb collected by the ATLAS experiment at the Large Hadron Collider. Inclusive and differential jet cross sections in Z events, with Z decaying into electron or muon pairs, are measured for jets with transverse momentum pT > 30 GeV and rapidity |y| < 4.4. The results are compared to next-to-leading-order perturbative QCD calculations, and to predictions from different Monte Carlo generators based on leading-order and next-to-leading-order matrix elements supplemented by parton showers.
26 April 2013
Contact: Standard Model conveners
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e-print arXiv:1304.7098 - pdf from arXiv
Figures
Figure 01a
Numbers of events observed in data and predicted in simulation that pass the Z(->ee)+jets and Z(->mumu)+jets selection as a function of the invariant mass of the Z candidate,(a) m(ee) and (b) m(mumu),for events with at least one jet with pT > 30 GeV and |y| <4.4, and as a function of the inclusive jet multiplicity, Njet , 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 Z+jets 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.
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Figure 01b
Numbers of events observed in data and predicted in simulation that pass the Z(->ee)+jets and Z(->mumu)+jets selection as a function of the invariant mass of the Z candidate,(a) m(ee) and (b) m(mumu),for events with at least one jet with pT > 30 GeV and |y| <4.4, and as a function of the inclusive jet multiplicity, Njet , 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 Z+jets 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.
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Figure 01c
Numbers of events observed in data and predicted in simulation that pass the Z(->ee)+jets and Z(->mumu)+jets selection as a function of the invariant mass of the Z candidate,(a) m(ee) and (b) m(mumu),for events with at least one jet with pT > 30 GeV and |y| <4.4, and as a function of the inclusive jet multiplicity, Njet , 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 Z+jets 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.
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Figure 01d
Numbers of events observed in data and predicted in simulation that pass the Z(->ee)+jets and Z(->mumu)+jets selection as a function of the invariant mass of the Z candidate,(a) m(ee) and (b) m(mumu),for events with at least one jet with pT > 30 GeV and |y| <4.4, and as a function of the inclusive jet multiplicity, Njet , 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 Z+jets 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.
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Figure 02a
(a) Measured cross section for Z(->ll)+jets as a function of the inclusive jet multiplicity, Njet, and (b)ratio of cross sections for successive inclusive jet multiplicities. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHRPA and MCatNLO 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.
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Figure 02b
(a) Measured cross section for Z(->ll)+jets as a function of the inclusive jet multiplicity, Njet, and (b)ratio of cross sections for successive inclusive jet multiplicities. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHRPA and MCatNLO 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.
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Figure 03a
(a) Ratio of cross sections for successive exclusive jet multiplicities, Njet,in events selected with the standard selection and (b) in events with at least one jet with pT > 150 GeV and |y| <4.4. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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. The figures include (a) a linear fit Rmulti = Ro+dR/dn*n in the range R2/1 <R(n+1)/n<R5/4 and (b) a Poisson fit Rmulti = nbar/n to the data points, with the free parameters Ro, dR/dn and nbar.
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Figure 03b
(a) Ratio of cross sections for successive exclusive jet multiplicities, Njet,in events selected with the standard selection and (b) in events with at least one jet with pT > 150 GeV and |y| <4.4. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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. The figures include (a) a linear fit Rmulti = Ro+dR/dn*n in the range R2/1 <R(n+1)/n<R5/4 and (b) a Poisson fit Rmulti = nbar/n to the data points, with the free parameters Ro, dR/dn and nbar.
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Figure 04a
(a) Measured cross section for Z(->ll)+jets as a function of the exclusive jet multiplicity, Njet, and (b) ratio of the cross sections for two successive multiplicities, in events passing the VBF preselection (at least two jets with pT > 30 GeV and |y| <4.4 and m(jj) >350GeV and dy(jj) >3.0 for the two leading jets). The other details are as in Figure 3.
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Figure 04b
(a) Measured cross section for Z(->ll)+jets as a function of the exclusive jet multiplicity, Njet, and (b) ratio of the cross sections for two successive multiplicities, in events passing the VBF preselection (at least two jets with pT > 30 GeV and |y| <4.4 and m(jj) >350GeV and dy(jj) >3.0 for the two leading jets). The other details are as in Figure 3.
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Figure 05a
(a) Measured cross section for Z(->ll)+jets as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <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 Z->ll cross section. The other details are as in Figure 2.
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Figure 05b
(a) Measured cross section for Z(->ll)+jets as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <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 Z->ll cross section. The other details are as in Figure 2.
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Figure 06a
(a) Measured cross section for Z(->ll)+jets as a function of the transverse momentum, pT, of the third leading jet for events with at least three jets with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT of the fourth leading jet for events with at least four jets. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 06b
(a) Measured cross section for Z(->ll)+jets as a function of the transverse momentum, pT, of the third leading jet for events with at least three jets with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT of the fourth leading jet for events with at least four jets. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 07a
(a) Measured cross section for Z(->ll)+jets as a function of the jet transverse momentum, pT, for events with exactly one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of the ratio of pT of the second leading jet to pT of the leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 3.
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Figure 07b
(a) Measured cross section for Z(->ll)+jets as a function of the jet transverse momentum, pT, for events with exactly one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of the ratio of pT of the second leading jet to pT of the leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 3.
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Figure 08a
(a) Measured cross section for Z(->ll)+jets as a function of the transverse momentum of the Z candidate, pT(ll), in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT(ll) in events with exactly one jet. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 3.
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Figure 08b
(a) Measured cross section for Z(->ll)+jets as a function of the transverse momentum of the Z candidate, pT(ll), in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT(ll) in events with exactly one jet. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 3.
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Figure 09a
(a) Measured cross section for Z(->ll)+jets as a function of the absolute value of the rapidity of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of the absolute value of the rapidity of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 09b
(a) Measured cross section for Z(->ll)+jets as a function of the absolute value of the rapidity of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of the absolute value of the rapidity of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 10a
(a) Measured cross section for Z(->ll)+jets as a function of the absolute value of the rapidity of the third jet for events with at least three jets with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of the absolute value of the rapidity of the fourth jet for events with at least four jets. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 10b
(a) Measured cross section for Z(->ll)+jets as a function of the absolute value of the rapidity of the third jet for events with at least three jets with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of the absolute value of the rapidity of the fourth jet for events with at least four jets. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 11a
(a) Measured cross section for Z(->ll)+jets as a function of the separation in rapidity between the two leading jets, and (b) as a function of the invariant mass of the two leading jets, for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 11b
(a) Measured cross section for Z(->ll)+jets as a function of the separation in rapidity between the two leading jets, and (b) as a function of the invariant mass of the two leading jets, for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 12a
(a) Measured cross section for Z(->ll)+jets as a function of the distance in φ between the two leading jets and (b) as a function of the distance between the two leading jets, for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 12b
(a) Measured cross section for Z(->ll)+jets as a function of the distance in φ between the two leading jets and (b) as a function of the distance between the two leading jets, for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 13a
(a) Measured cross section for Z(->ll)+jets as a function of the transverse momentum of the third jet and (b) as a function of the absolute value of the rapidity of the third jet, in events passing the VBF preselection (at least two jets with pT > 30 GeV and |y| <4.4 and m(jj) >350GeV and dy(jj) >3.0 for the two leading jets). The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 13b
(a) Measured cross section for Z(->ll)+jets as a function of the transverse momentum of the third jet and (b) as a function of the absolute value of the rapidity of the third jet, in events passing the VBF preselection (at least two jets with pT > 30 GeV and |y| <4.4 and m(jj) >350GeV and dy(jj) >3.0 for the two leading jets). The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 14a
Fraction of events that pass a veto on a central (|η| < 2.4) third jet after VBF preselection (at least two jets with pT > 30 GeV and |y| <4.4, m(jj) >350GeV and dy(jj) >3.0 for the two leading jets) as a function of the third jet pT threshold, min pT, (a) in the electron channel and (b) in the muon channel, measured in data and predicted by the generators ALPGEN and SHERPA (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 Z+jets prediction, using ALPGEN 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.
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Figure 14b
Fraction of events that pass a veto on a central (|η| < 2.4) third jet after VBF preselection (at least two jets with pT > 30 GeV and |y| <4.4, m(jj) >350GeV and dy(jj) >3.0 for the two leading jets) as a function of the third jet pT threshold, min pT, (a) in the electron channel and (b) in the muon channel, measured in data and predicted by the generators ALPGEN and SHERPA (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 Z+jets prediction, using ALPGEN 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.
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Figure 15a
(a) Measured cross section for Z(->ll)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of the scalar pT sum of the jets, ST, in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 15b
(a) Measured cross section for Z(->ll)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of the scalar pT sum of the jets, ST, in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ll cross section. The other details are as in Figure 2.
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Figure 16a
(a) Average number of jets, < Njet >, in Z(->ee)+jets events as a function of the scalar pT sum of the leptons and the jets, HT, and (b) average number of jets in Z(->mumu)+jets events as a function of the transverse momentum of the Z boson candidate, pT(mumu), measured in data and predicted by the generators ALPGEN and SHERPA (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 Z+jets prediction, modelled with ALPGEN. 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.
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Figure 16b
(a) Average number of jets, < Njet >, in Z(->ee)+jets events as a function of the scalar pT sum of the leptons and the jets, HT, and (b) average number of jets in Z(->mumu)+jets events as a function of the transverse momentum of the Z boson candidate, pT(ll), measured in data and predicted by the generators ALPGEN and SHERPA (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 Z+jets prediction, modelled with ALPGEN. 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.
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Figure 17a
(a) Measured cross section for Z(->ll)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of the transverse momentum of the Z candidate, pT(ll), in events with at least one jet with pT > 30 GeV and ayj<4.4 in the final state. The cross sections are normalized to the inclusive Z->ll cross section. The unfolded data are compared to NLO pQCD predictions from bhs , obtained by adding the exclusive Z+1jets and the inclusive Z+2jets 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.
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Figure 17b
(a) Measured cross section for Z(->ll)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of the transverse momentum of the Z candidate, pT(ll), in events with at least one jet with pT > 30 GeV and ayj<4.4 in the final state. The cross sections are normalized to the inclusive Z->ll cross section. The unfolded data are compared to NLO pQCD predictions from bhs , obtained by adding the exclusive Z+1jets and the inclusive Z+2jets 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.
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Auxiliary material
Figure 18
Invariant mass distribution of the Z->ee candidates in data. The expected signal and non-multi-jet backgrounds (empty histogram) and the multi-jet background (blue histogram) after the normalisation in the template fit are superimposed.
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Figure 19a
(a) Distribution of the exclusive jet multiplicity, Njet, and (b) the transverse momentum, pT, of the leading jet in e+μ-+jets and e-μ++jets final states in data and simulation. The contributions from individual processes are shown (see legend for details). (c) Distribution of the exclusive jet multiplicity, Njet, and (d) the transverse momentum, pT, of the leading jet in ttbar -> eμ, ee and μμ simulation.
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Figure 19b
(a) Distribution of the exclusive jet multiplicity, Njet, and (b) the transverse momentum, pT, of the leading jet in e+μ-+jets and e-μ++jets final states in data and simulation. The contributions from individual processes are shown (see legend for details). (c) Distribution of the exclusive jet multiplicity, Njet, and (d) the transverse momentum, pT, of the leading jet in ttbar -> eμ, ee and μμ simulation.
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Figure 19c
(a) Distribution of the exclusive jet multiplicity, Njet, and (b) the transverse momentum, pT, of the leading jet in e+μ-+jets and e-μ++jets final states in data and simulation. The contributions from individual processes are shown (see legend for details). (c) Distribution of the exclusive jet multiplicity, Njet, and (d) the transverse momentum, pT, of the leading jet in ttbar -> eμ, ee and μμ simulation.
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Figure 19d
(a) Distribution of the exclusive jet multiplicity, Njet, and (b) the transverse momentum, pT, of the leading jet in e+μ-+jets and e-μ++jets final states in data and simulation. The contributions from individual processes are shown (see legend for details). (c) Distribution of the exclusive jet multiplicity, Njet, and (d) the transverse momentum, pT, of the leading jet in ttbar -> eμ, ee and μμ simulation.
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Figure 20a
(a) Average number of jets, <Njet >, in Z(->mumu)+jets events as a function of the scalar pT sum of the leptons and the jets, HT , and (b) average number of jets in Z(->ee)+jets events as a function of the Z transverse momentum, pT(ee), measured in data and predicted by the generators ALPGEN and SHERPA (see legend for details). The data points indicate the measured distribution after subtraction of electroweak and multi-jet backgrounds. The hatched band corresponds to the combined statistical and systematic uncertainty on the Z+jets prediction, modelled with ALPGEN. 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.
png (104kB) pdf (26kB)
Figure 20b
(a) Average number of jets, <Njet >, in Z(->mumu)+jets events as a function of the scalar pT sum of the leptons and the jets, HT , and (b) average number of jets in Z(->ee)+jets events as a function of the Z transverse momentum, pT(ee), measured in data and predicted by the generators ALPGEN and SHERPA (see legend for details). The data points indicate the measured distribution after subtraction of electroweak and multi-jet backgrounds. The hatched band corresponds to the combined statistical and systematic uncertainty on the Z+jets prediction, modelled with ALPGEN. 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.
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Figure 21a
Distribution of the distance in φ of the two leading jets (a) for 0 GeV < pT(ll) < 40 GeV and (b) for 160 GeV < pT(ll) < 200 GeV and of the ratio of the transverse momentum of the second leading jet to that of the leading jet (c) for 0 GeV < pT(ll) < 40 GeV and (d) for 160 GeV < pT(ll) < 200 GeV in Z(->ee)+jets events with at least two jets with pT > 30 GeV and |y| < 4.4, measured in data and predicted by the generators ALPGEN and SHERPA (see legend for details). The hatched band corresponds to the combined statistical and systematic uncertainty on the prediction, using ALPGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
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Figure 21b
Distribution of the distance in φ of the two leading jets (a) for 0 GeV < pT(ll) < 40 GeV and (b) for 160 GeV < pT(ll) < 200 GeV and of the ratio of the transverse momentum of the second leading jet to that of the leading jet (c) for 0 GeV < pT(ll) < 40 GeV and (d) for 160 GeV < pT(ll) < 200 GeV in Z(->ee)+jets events with at least two jets with pT > 30 GeV and |y| < 4.4, measured in data and predicted by the generators ALPGEN and SHERPA (see legend for details). The hatched band corresponds to the combined statistical and systematic uncertainty on the prediction, using ALPGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
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Figure 21c
Distribution of the distance in φ of the two leading jets (a) for 0 GeV < pT(ll) < 40 GeV and (b) for 160 GeV < pT(ll) < 200 GeV and of the ratio of the transverse momentum of the second leading jet to that of the leading jet (c) for 0 GeV < pT(ll) < 40 GeV and (d) for 160 GeV < pT(ll) < 200 GeV in Z(->ee)+jets events with at least two jets with pT > 30 GeV and |y| < 4.4, measured in data and predicted by the generators ALPGEN and SHERPA (see legend for details). The hatched band corresponds to the combined statistical and systematic uncertainty on the prediction, using ALPGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
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Figure 21d
Distribution of the distance in φ of the two leading jets (a) for 0 GeV < pT(ll) < 40 GeV and (b) for 160 GeV < pT(ll) < 200 GeV and of the ratio of the transverse momentum of the second leading jet to that of the leading jet (c) for 0 GeV < pT(ll) < 40 GeV and (d) for 160 GeV < pT(ll) < 200 GeV in Z(->ee)+jets events with at least two jets with pT > 30 GeV and |y| < 4.4, measured in data and predicted by the generators ALPGEN and SHERPA (see legend for details). The hatched band corresponds to the combined statistical and systematic uncertainty on the prediction, using ALPGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
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Figure 22a
Distribution of the distance in φ of the two leading jets (a) for 0 GeV < pT(ll) < 40 GeV and (b) for 160 GeV < pT(ll) < 200 GeV and of the ratio of the transverse momentum of the second leading jet to that of the leading jet (c) for 0 GeV < pT(ll) < 40 GeV and (d) for 160 GeV < pT(ll) < 200 GeV in Z(->mumu)+jets events with at least two jets with pT > 30 GeV and |y| < 4.4, measured in data and predicted by the generators ALPGEN and SHERPA (see legend for details). The hatched band corresponds to the combined statistical and systematic uncertainty on the prediction, using ALPGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
png (95kB) pdf (21kB)
Figure 22b
Distribution of the distance in φ of the two leading jets (a) for 0 GeV < pT(ll) < 40 GeV and (b) for 160 GeV < pT(ll) < 200 GeV and of the ratio of the transverse momentum of the second leading jet to that of the leading jet (c) for 0 GeV < pT(ll) < 40 GeV and (d) for 160 GeV < pT(ll) < 200 GeV in Z(->mumu)+jets events with at least two jets with pT > 30 GeV and |y| < 4.4, measured in data and predicted by the generators ALPGEN and SHERPA (see legend for details). The hatched band corresponds to the combined statistical and systematic uncertainty on the prediction, using ALPGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
png (100kB) pdf (22kB)
Figure 22c
Distribution of the distance in φ of the two leading jets (a) for 0 GeV < pT(ll) < 40 GeV and (b) for 160 GeV < pT(ll) < 200 GeV and of the ratio of the transverse momentum of the second leading jet to that of the leading jet (c) for 0 GeV < pT(ll) < 40 GeV and (d) for 160 GeV < pT(ll) < 200 GeV in Z(->mumu)+jets events with at least two jets with pT > 30 GeV and |y| < 4.4, measured in data and predicted by the generators ALPGEN and SHERPA (see legend for details). The hatched band corresponds to the combined statistical and systematic uncertainty on the prediction, using ALPGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
png (103kB) pdf (24kB)
Figure 22d
Distribution of the distance in φ of the two leading jets (a) for 0 GeV < pT(ll) < 40 GeV and (b) for 160 GeV < pT(ll) < 200 GeV and of the ratio of the transverse momentum of the second leading jet to that of the leading jet (c) for 0 GeV < pT(ll) < 40 GeV and (d) for 160 GeV < pT(ll) < 200 GeV in Z(->mumu)+jets events with at least two jets with pT > 30 GeV and |y| < 4.4, measured in data and predicted by the generators ALPGEN and SHERPA (see legend for details). The hatched band corresponds to the combined statistical and systematic uncertainty on the prediction, using ALPGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
png (107kB) pdf (25kB)
Figure 23a
Number of events observed in data and predicted in simulation that pass the Z(->ee)+jets selections (a) as a function of the exclusive jet multiplicity, Njet, (b) as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 and (c) as a function of the rapidity, y, of the leading jet for events with at least one jet. 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, using APGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
png (85kB) pdf (19kB)
Figure 23b
Number of events observed in data and predicted in simulation that pass the Z(->ee)+jets selections (a) as a function of the exclusive jet multiplicity, Njet, (b) as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 and (c) as a function of the rapidity, y, of the leading jet for events with at least one jet. 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, using APGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
png (109kB) pdf (27kB)
Figure 23c
Number of events observed in data and predicted in simulation that pass the Z(->ee)+jets selections (a) as a function of the exclusive jet multiplicity, Njet, (b) as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 and (c) as a function of the rapidity, y, of the leading jet for events with at least one jet. 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, using APGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
png (114kB) pdf (32kB)
Figure 24a
Number of events observed in data and predicted in simulation that pass the Z(->mumu)+jets selections (a) as a function of the exclusive jet multiplicity, Njet, (b) as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 and (c) as a function of the rapidity, y, of the leading jet for events with at least one jet. 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, using APGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
png (82kB) pdf (18kB)
Figure 24b
Number of events observed in data and predicted in simulation that pass the Z(->mumu)+jets selections (a) as a function of the exclusive jet multiplicity, Njet, (b) as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 and (c) as a function of the rapidity, y, of the leading jet for events with at least one jet. 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, using APGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
png (104kB) pdf (25kB)
Figure 24c
Number of events observed in data and predicted in simulation that pass the Z(->mumu)+jets selections (a) as a function of the exclusive jet multiplicity, Njet, (b) as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 and (c) as a function of the rapidity, y, of the leading jet for events with at least one jet. 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, using APGEN to model the Z+jets process. The error bars on each data point show the statistical uncertainty. 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.
png (107kB) pdf (28kB)
Figure 25a
Fraction of events that pass a veto on a third jet after VBF preselection (at least two jets with pT > 30 GeV and |y| <4.4, m(jj) >350GeV and dy(jj) >3.0 for the two leading jets) as a function of the third jet pT threshold, min pT, (a) in the electron 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.
png (102kB) pdf (16kB)
Figure 25b
Fraction of events that pass a veto on a third jet after VBF preselection (at least two jets with pT > 30 GeV and |y| <4.4, m(jj) >350GeV and dy(jj) >3.0 for the two leading jets) as a function of the third jet pT threshold, min pT, (a) in the electron 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.
png (97kB) pdf (16kB)
Figure 26a
Response matrices for the transverse momentum, pT, of the leading jet (a) in Z(->ee)+jets and (b) in Z(->mumu)+jets events and for the exclusive jet multiplicity, Njet, (c) in Z(->ee)+jets and (d) in Z(->mumu)+jets events obtained from ALPGEN.
png (69kB) pdf (16kB)
Figure 26b
Response matrices for the transverse momentum, pT, of the leading jet (a) in Z(->ee)+jets and (b) in Z(->mumu)+jets events and for the exclusive jet multiplicity, Njet, (c) in Z(->ee)+jets and (d) in Z(->mumu)+jets events obtained from ALPGEN.
png (62kB) pdf (11kB)
Figure 26c
Response matrices for the transverse momentum, pT, of the leading jet (a) in Z(->ee)+jets and (b) in Z(->mumu)+jets events and for the exclusive jet multiplicity, Njet, (c) in Z(->ee)+jets and (d) in Z(->mumu)+jets events obtained from ALPGEN.
png (45kB) pdf (14kB)
Figure 26d
Response matrices for the transverse momentum, pT, of the leading jet (a) in Z(->ee)+jets and (b) in Z(->mumu)+jets events and for the exclusive jet multiplicity, Njet, (c) in Z(->ee)+jets and (d) in Z(->mumu)+jets events obtained from ALPGEN.
png (47kB) pdf (9kB)
Figure 27a
(a) Fragmentation correction and (b) underlying-event (UE) correction as a function of the exclusive jet multiplicity, Njet, (c) fragmentation correction and (d) UE correction as a function of the transverse momentum, pT, of the leading jet and (e) fragmentation correction and (f) UE correction as a function of the rapidity, y, of the leading jet in Z(->ee)+jets generated with ALPGEN+HERWIG+JIMMY and with ALPGEN+PYTHIA.
png (55kB) pdf (15kB)
Figure 27b
(a) Fragmentation correction and (b) underlying-event (UE) correction as a function of the exclusive jet multiplicity, Njet, (c) fragmentation correction and (d) UE correction as a function of the transverse momentum, pT, of the leading jet and (e) fragmentation correction and (f) UE correction as a function of the rapidity, y, of the leading jet in Z(->ee)+jets generated with ALPGEN+HERWIG+JIMMY and with ALPGEN+PYTHIA.
png (54kB) pdf (15kB)
Figure 27c
(a) Fragmentation correction and (b) underlying-event (UE) correction as a function of the exclusive jet multiplicity, Njet, (c) fragmentation correction and (d) UE correction as a function of the transverse momentum, pT, of the leading jet and (e) fragmentation correction and (f) UE correction as a function of the rapidity, y, of the leading jet in Z(->ee)+jets generated with ALPGEN+HERWIG+JIMMY and with ALPGEN+PYTHIA.
png (63kB) pdf (18kB)
Figure 27d
(a) Fragmentation correction and (b) underlying-event (UE) correction as a function of the exclusive jet multiplicity, Njet, (c) fragmentation correction and (d) UE correction as a function of the transverse momentum, pT, of the leading jet and (e) fragmentation correction and (f) UE correction as a function of the rapidity, y, of the leading jet in Z(->ee)+jets generated with ALPGEN+HERWIG+JIMMY and with ALPGEN+PYTHIA.
png (63kB) pdf (18kB)
Figure 27e
(a) Fragmentation correction and (b) underlying-event (UE) correction as a function of the exclusive jet multiplicity, Njet, (c) fragmentation correction and (d) UE correction as a function of the transverse momentum, pT, of the leading jet and (e) fragmentation correction and (f) UE correction as a function of the rapidity, y, of the leading jet in Z(->ee)+jets generated with ALPGEN+HERWIG+JIMMY and with ALPGEN+PYTHIA.
png (72kB) pdf (22kB)
Figure 27f
(a) Fragmentation correction and (b) underlying-event (UE) correction as a function of the exclusive jet multiplicity, Njet, (c) fragmentation correction and (d) UE correction as a function of the transverse momentum, pT, of the leading jet and (e) fragmentation correction and (f) UE correction as a function of the rapidity, y, of the leading jet in Z(->ee)+jets generated with ALPGEN+HERWIG+JIMMY and with ALPGEN+PYTHIA.
png (71kB) pdf (22kB)
Figure 28a
(a) Combined fragmentation and underlying-event (UE) correction as a function of the exclusive jet multiplicity, Njet, (b) as a function of the transverse momentum , pT, of the leading jet and (c) as a function of the rapidity, y, of the leading jet in Z(->ee)+jets generated with ALPGEN+HERWIG+JIMMY and with ALPGEN+PYTHIA.
png (57kB) pdf (15kB)
Figure 28b
(a) Combined fragmentation and underlying-event (UE) correction as a function of the exclusive jet multiplicity, Njet, (b) as a function of the transverse momentum , pT, of the leading jet and (c) as a function of the rapidity, y, of the leading jet in Z(->ee)+jets generated with ALPGEN+HERWIG+JIMMY and with ALPGEN+PYTHIA.
png (66kB) pdf (18kB)
Figure 28c
(a) Combined fragmentation and underlying-event (UE) correction as a function of the exclusive jet multiplicity, Njet, (b) as a function of the transverse momentum , pT, of the leading jet and (c) as a function of the rapidity, y, of the leading jet in Z(->ee)+jets generated with ALPGEN+HERWIG+JIMMY and with ALPGEN+PYTHIA.
png (74kB) pdf (22kB)
Figure 29a
(a,b) Electroweak final state radiation (QED-FSR) correction as a function of the exclusive jet multiplicity, Njet, (c,d) the transverse momentum, pT, of the leading jet and (e,f) the rapidity, y, of the leading jet in Z(->ee)+jets (left) and Z(->mumu)+jets (right) generated with ALPGEN+HERWUG.
png (52kB) pdf (15kB)
Figure 29b
(a,b) Electroweak final state radiation (QED-FSR) correction as a function of the exclusive jet multiplicity, Njet, (c,d) the transverse momentum, pT, of the leading jet and (e,f) the rapidity, y, of the leading jet in Z(->ee)+jets (left) and Z(->mumu)+jets (right) generated with ALPGEN+HERWUG.
png (59kB) pdf (13kB)
Figure 29c
(a,b) Electroweak final state radiation (QED-FSR) correction as a function of the exclusive jet multiplicity, Njet, (c,d) the transverse momentum, pT, of the leading jet and (e,f) the rapidity, y, of the leading jet in Z(->ee)+jets (left) and Z(->mumu)+jets (right) generated with ALPGEN+HERWUG.
png (63kB) pdf (17kB)
Figure 29d
(a,b) Electroweak final state radiation (QED-FSR) correction as a function of the exclusive jet multiplicity, Njet, (c,d) the transverse momentum, pT, of the leading jet and (e,f) the rapidity, y, of the leading jet in Z(->ee)+jets (left) and Z(->mumu)+jets (right) generated with ALPGEN+HERWUG.
png (71kB) pdf (15kB)
Figure 29e
(a,b) Electroweak final state radiation (QED-FSR) correction as a function of the exclusive jet multiplicity, Njet, (c,d) the transverse momentum, pT, of the leading jet and (e,f) the rapidity, y, of the leading jet in Z(->ee)+jets (left) and Z(->mumu)+jets (right) generated with ALPGEN+HERWUG.
png (61kB) pdf (19kB)
Figure 29f
(a,b) Electroweak final state radiation (QED-FSR) correction as a function of the exclusive jet multiplicity, Njet, (c,d) the transverse momentum, pT, of the leading jet and (e,f) the rapidity, y, of the leading jet in Z(->ee)+jets (left) and Z(->mumu)+jets (right) generated with ALPGEN+HERWUG.
png (67kB) pdf (17kB)
Figure 30a
(a) Relative systematic uncertainties on the cross section as a function of the transverse momentum, pT, of the leading jet, (b) the rapidity, y, of the leading jet and (c) the exclusive jet multiplicity, Njet, for Z(->ee)+jets. The total uncertainty and the different components (jet energy scale (JES), jet energy resolution (JER), lepton selection, background, unfolding) are shown.
png (65kB) pdf (16kB)
Figure 30b
(a) Relative systematic uncertainties on the cross section as a function of the transverse momentum, pT, of the leading jet, (b) the rapidity, y, of the leading jet and (c) the exclusive jet multiplicity, Njet, for Z(->ee)+jets. The total uncertainty and the different components (jet energy scale (JES), jet energy resolution (JER), lepton selection, background, unfolding) are shown.
png (56kB) pdf (16kB)
Figure 30c
(a) Relative systematic uncertainties on the cross section as a function of the transverse momentum, pT, of the leading jet, (b) the rapidity, y, of the leading jet and (c) the exclusive jet multiplicity, Njet, for Z(->ee)+jets. The total uncertainty and the different components (jet energy scale (JES), jet energy resolution (JER), lepton selection, background, unfolding) are shown.
png (52kB) pdf (14kB)
Figure 31a
(a) Relative systematic uncertainties on the cross section as a function of the transverse momentum, pT, of the leading jet, (b) the rapidity, y, of the leading jet and (c) the exclusive jet multiplicity, Njet, for Z(->mumu)+jets. The total uncertainty and the different components (jet energy scale (JES), jet energy resolution (JER), lepton selection, background, unfolding) are shown.
png (70kB) pdf (15kB)
Figure 31b
(a) Relative systematic uncertainties on the cross section as a function of the transverse momentum, pT, of the leading jet, (b) the rapidity, y, of the leading jet and (c) the exclusive jet multiplicity, Njet, for Z(->mumu)+jets. The total uncertainty and the different components (jet energy scale (JES), jet energy resolution (JER), lepton selection, background, unfolding) are shown.
png (61kB) pdf (16kB)
Figure 31c
(a) Relative systematic uncertainties on the cross section as a function of the transverse momentum, pT, of the leading jet, (b) the rapidity, y, of the leading jet and (c) the exclusive jet multiplicity, Njet, for Z(->mumu)+jets. The total uncertainty and the different components (jet energy scale (JES), jet energy resolution (JER), lepton selection, background, unfolding) are shown.
png (54kB) pdf (14kB)
Figure 32a
(a) Measured cross section for Z(->ee)+jets as a function of the inclusive jet multiplicity, Njet, and (b) ratio of cross sections for successive inclusive jet multiplicities. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (146kB) pdf (26kB)
Figure 32b
(a) Measured cross section for Z(->ee)+jets as a function of the inclusive jet multiplicity, Njet, and (b) ratio of cross sections for successive inclusive jet multiplicities. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (126kB) pdf (21kB)
Figure 33a
(a) Measured cross section for Z(->mumu)+jets as a function of the inclusive jet multiplicity, Njet, and (b) ratio of cross sections for successive inclusive jet multiplicities. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHEPA and MCatNLO 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.
png (143kB) pdf (24kB)
Figure 33b
(a) Measured cross section for Z(->mumu)+jets as a function of the inclusive jet multiplicity, Njet, and (b) ratio of cross sections for successive inclusive jet multiplicities. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHEPA and MCatNLO 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.
png (129kB) pdf (22kB)
Figure 34a
(a) Ratio of of cross sections for successive exclusive jet multiplicities, Njet, in Z(->ee)+jets events selected with the standard selection and (b) for events with at least one jet with pT > 150 GeV and |y| <4.4. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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. The figures include (a) a linear fit Rmulti = Ro + dR/dn * n in the range R2/1 <R(n+1)/n<R5/4 and (b) a Poisson fit Rmulti = nbar/n to the data points, with the free parameters Ro, dR/dn and nbar.
png (107kB) pdf (21kB)
Figure 34b
(a) Ratio of of cross sections for successive exclusive jet multiplicities, Njet, in Z(->ee)+jets events selected with the standard selection and (b) for events with at least one jet with pT > 150 GeV and |y| <4.4. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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. The figures include (a) a linear fit Rmulti = Ro + dR/dn * n in the range R2/1 <R(n+1)/n<R5/4 and (b) a Poisson fit Rmulti = nbar/n to the data points, with the free parameters Ro, dR/dn and nbar.
png (112kB) pdf (20kB)
Figure 35a
(a) Ratio of of cross sections for successive exclusive jet multiplicities, Njet, in Z(->mumu)+jets events selected with the standard selection and (b) for events with at least one jet with pT > 150 GeV and |y| <4.4. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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. The figures include (a) a linear fit Rmulti = Ro + dR/dn * n in the range R2/1 <R(n+1)/n<R5/4 and (b) a Poisson fit Rmulti = nbar/n to the data points, with the free parameters Ro, dR/dn and nbar.
png (108kB) pdf (21kB)
Figure 35b
(a) Ratio of of cross sections for successive exclusive jet multiplicities, Njet, in Z(->mumu)+jets events selected with the standard selection and (b) for events with at least one jet with pT > 150 GeV and |y| <4.4. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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. The figures include (a) a linear fit Rmulti = Ro + dR/dn * n in the range R2/1 <R(n+1)/n<R5/4 and (b) a Poisson fit Rmulti = nbar/n to the data points, with the free parameters Ro, dR/dn and nbar.
png (114kB) pdf (20kB)
Figure 36a
(a) Measured cross section for Z(->ee)+jets and (b) for Z(->mumu)+jets as a function of the exclusive jet multiplicity, Njet, in events passing the VBF preselection (at least two jets with pT > 30 GeV and |y| <4.4, m(jj) >350GeV and dy(jj) >3.0 for the two leading jets). The data are compared to NLO pQCD predictions from BH=SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (139kB) pdf (21kB)
Figure 36b
(a) Measured cross section for Z(->ee)+jets and (b) for Z(->mumu)+jets as a function of the exclusive jet multiplicity, Njet, in events passing the VBF preselection (at least two jets with pT > 30 GeV and |y| <4.4, m(jj) >350GeV and dy(jj) >3.0 for the two leading jets). The data are compared to NLO pQCD predictions from BH=SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (124kB) pdf (20kB)
Figure 37a
(a) Measured cross section for Z(->ee)+jets as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive Zgee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (200kB) pdf (39kB)
Figure 37b
(a) Measured cross section for Z(->ee)+jets as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive Zgee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (183kB) pdf (33kB)
Figure 38a
(a) Measured cross section for Z(->mumu)+jets as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive Zgee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (199kB) pdf (35kB)
Figure 38b
(a) Measured cross section for Z(->mumu)+jets as a function of the transverse momentum, pT, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive Zgee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (180kB) pdf (30kB)
Figure 39a
(a) Measured cross section for Z(->ee)+jets as a function of the transverse momentum, pT, of the third leading jet for events with at least three jets with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT of the fourth leading jet for events with at least four jets. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (168kB) pdf (29kB)
Figure 39b
(a) Measured cross section for Z(->ee)+jets as a function of the transverse momentum, pT, of the third leading jet for events with at least three jets with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT of the fourth leading jet for events with at least four jets. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (151kB) pdf (25kB)
Figure 40a
(a) Measured cross section for Z(->mumu)+jets as a function of the transverse momentum, pT, of the third leading jet for events with at least three jets with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT of the fourth leading jet for events with at least four jets. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (168kB) pdf (27kB)
Figure 40b
(a) Measured cross section for Z(->mumu)+jets as a function of the transverse momentum, pT, of the third leading jet for events with at least three jets with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT of the fourth leading jet for events with at least four jets. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (149kB) pdf (24kB)
Figure 41a
(a) Measured cross section for Z(->ee)+jets as a function of the jet transverse momentum, pT, for events with exactly one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of the ratio of pT of the second leading jet to pT of the leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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 in (a) 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.
png (182kB) pdf (35kB)
Figure 41b
(a) Measured cross section for Z(->ee)+jets as a function of the jet transverse momentum, pT, for events with exactly one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of the ratio of pT of the second leading jet to pT of the leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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 in (a) 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.
png (179kB) pdf (38kB)
Figure 42a
(a) Measured cross section for Z(->mumu)+jets as a function of the jet transverse momentum, pT, for events with exactly one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of the ratio of pT of the second leading jet to pT of the leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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 in (a) 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.
png (169kB) pdf (31kB)
Figure 42b
(a) Measured cross section for Z(->mumu)+jets as a function of the jet transverse momentum, pT, for events with exactly one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of the ratio of pT of the second leading jet to pT of the leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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 in (a) 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.
png (171kB) pdf (34kB)
Figure 43a
(a) Measured cross section for Z(->ee)+jets as a function of the transverse momentum of the Z candidate, pT(ee), for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT(ee) for events with exactly one jet. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH=SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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 in (b) 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.
png (148kB) pdf (30kB)
Figure 43b
(a) Measured cross section for Z(->ee)+jets as a function of the transverse momentum of the Z candidate, pT(ee), for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT(ee) for events with exactly one jet. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH=SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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 in (b) 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.
png (161kB) pdf (31kB)
Figure 44a
(a) Measured cross section for Z(->mumu)+jets as a function of the transverse momentum of the Z candidate, pT(mumu), for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT(mumu) for events with exactly one jet. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH=SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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 in (b) 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.
png (143kB) pdf (28kB)
Figure 44b
(a) Measured cross section for Z(->mumu)+jets as a function of the transverse momentum of the Z candidate, pT(mumu), for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of pT(mumu) for events with exactly one jet. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH=SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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 in (b) 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.
png (157kB) pdf (29kB)
Figure 45a
(a) Measured cross section for Z(->ee)+jets as a function of the absolute value of the rapidity, |y|, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of |y| of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (175kB) pdf (35kB)
Figure 45b
(a) Measured cross section for Z(->ee)+jets as a function of the absolute value of the rapidity, |y|, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of |y| of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (171kB) pdf (32kB)
Figure 46a
(a) Measured cross section for Z(->mumu)+jets as a function of the absolute value of the rapidity, |y|, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of |y| of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (175kB) pdf (32kB)
Figure 46b
(a) Measured cross section for Z(->mumu)+jets as a function of the absolute value of the rapidity, |y|, of the leading jet for events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of |y| of the second leading jet for events with at least two jets. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN, SHERPA and MCatNLO 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.
png (171kB) pdf (30kB)
Figure 47a
(a) Measured cross section for Z(->ee)+jets as a function of the absolute value of the rapidity, |y|, of the third leading jet for events with at least three jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of |y| of the fourth leading jet for events with at least four jets. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (164kB) pdf (28kB)
Figure 47b
(a) Measured cross section for Z(->ee)+jets as a function of the absolute value of the rapidity, |y|, of the third leading jet for events with at least three jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of |y| of the fourth leading jet for events with at least four jets. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (154kB) pdf (24kB)
Figure 48a
(a) Measured cross section for Z(->mumu)+jets as a function of the absolute value of the rapidity, |y|, of the third leading jet for events with at least three jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of |y| of the fourth leading jet for events with at least four jets. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (164kB) pdf (27kB)
Figure 48b
(a) Measured cross section for Z(->mumu)+jets as a function of the absolute value of the rapidity, |y|, of the third leading jet for events with at least three jet with pT > 30 GeV and |y| <4.4 in the final state and (b) as a function of |y| of the fourth leading jet for events with at least four jets. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (143kB) pdf (23kB)
Figure 49a
(a) Measured cross section for Z(->ee)+jets as a function of the distance in rapidity, dy(jj), between the two leading jets and (b) as a function of the invariant mass, m(jj), of the two leading jets, for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (173kB) pdf (31kB)
Figure 49b
(a) Measured cross section for Z(->ee)+jets as a function of the distance in rapidity, dy(jj), between the two leading jets and (b) as a function of the invariant mass, m(jj), of the two leading jets, for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (183kB) pdf (37kB)
Figure 50a
(a) Measured cross section for Z(->mumu)+jets as a function of the distance in rapidity, dy(jj), between the two leading jets and (b) as a function of the invariant mass, m(jj), of the two leading jets, for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (175kB) pdf (29kB)
Figure 50b
(a) Measured cross section for Z(->mumu)+jets as a function of the distance in rapidity, dy(jj), between the two leading jets and (b) as a function of the invariant mass, m(jj), of the two leading jets, for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (185kB) pdf (34kB)
Figure 51a
(a) Measured cross section for Z(->ee)+jets as a function of the distance in φ between the two leading jets and (b) as a function of the distance in R between the two leading jets for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (165kB) pdf (30kB)
Figure 51b
(a) Measured cross section for Z(->ee)+jets as a function of the distance in φ between the two leading jets and (b) as a function of the distance in R between the two leading jets for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (179kB) pdf (36kB)
Figure 52a
(a) Measured cross section for Z(->mumu)+jets as a function of the distance in φ between the two leading jets and (b) as a function of the distance in R between the two leading jets for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (167kB) pdf (28kB)
Figure 52b
(a) Measured cross section for Z(->mumu)+jets as a function of the distance in φ between the two leading jets and (b) as a function of the distance in R between the two leading jets for events with at least two jets with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (174kB) pdf (32kB)
Figure 53a
(a) Measured cross section for Z(->ee)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of of the scalar pT sum of the jets, ST, in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (163kB) pdf (40kB)
Figure 53b
(a) Measured cross section for Z(->ee)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of of the scalar pT sum of the jets, ST, in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (155kB) pdf (36kB)
Figure 54a
(a) Measured cross section for Z(->mumu)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of of the scalar pT sum of the jets, ST, in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (159kB) pdf (35kB)
Figure 54b
(a) Measured cross section for Z(->mumu)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of of the scalar pT sum of the jets, ST, in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (154kB) pdf (33kB)
Figure 55a
(a) Measured cross section for Z(->ee)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of the transverse momentum of the Z candidate, pT(ee), in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA, obtained by adding the exclusive Z(->ee)+1jet and the inclusive Z(->ee)+2jets 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.
png (108kB) pdf (26kB)
Figure 55b
(a) Measured cross section for Z(->ee)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of the transverse momentum of the Z candidate, pT(ee), in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA, obtained by adding the exclusive Z(->ee)+1jet and the inclusive Z(->ee)+2jets 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.
png (94kB) pdf (21kB)
Figure 56a
(a) Measured cross section for Z(->mumu)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of the transverse momentum of the Z candidate, pT(mumu), in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA, obtained by adding the exclusive Z(->mumu)+1jet and the inclusive Z(->mumu)+2jets 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.
png (101kB) pdf (23kB)
Figure 56b
(a) Measured cross section for Z(->mumu)+jets as a function of the scalar pT sum of the leptons and the jets, HT, and (b) as a function of the transverse momentum of the Z candidate, pT(mumu), in events with at least one jet with pT > 30 GeV and |y| <4.4 in the final state. The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA, obtained by adding the exclusive Z(->mumu)+1jet and the inclusive Z(->mumu)+2jets 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.
png (89kB) pdf (20kB)
Figure 57a
(a) Measured cross section for Z(->ee)+jets as a function of the transverse momentum, pT, of the third leading jet and (b) as a function of the absolute value of the rapidity, |y|, of the third leading jet in events passing the VBF preselection (at least two jets with |y| <4.4, pT > 30 GeV and m(jj) >350GeV and dy(jj) >3.0 for the two leading jets). The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (145kB) pdf (24kB)
Figure 57b
(a) Measured cross section for Z(->ee)+jets as a function of the transverse momentum, pT, of the third leading jet and (b) as a function of the absolute value of the rapidity, |y|, of the third leading jet in events passing the VBF preselection (at least two jets with |y| <4.4, pT > 30 GeV and m(jj) >350GeV and dy(jj) >3.0 for the two leading jets). The cross sections are normalized to the inclusive Z->ee cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
png (147kB) pdf (24kB)
Figure 58a
(a) Measured cross section for Z(->mumu)+jets as a function of the transverse momentum, pT, of the third leading jet and (b) as a function of the absolute value of the rapidity, |y|, of the third leading jet in events passing the VBF preselection (at least two jets with |y| <4.4, pT > 30 GeV and m(jj) >350GeV and dy(jj) >3.0 for the two leading jets). The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
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Figure 58b
(a) Measured cross section for Z(->mumu)+jets as a function of the transverse momentum, pT, of the third leading jet and (b) as a function of the absolute value of the rapidity, |y|, of the third leading jet in events passing the VBF preselection (at least two jets with |y| <4.4, pT > 30 GeV and m(jj) >350GeV and dy(jj) >3.0 for the two leading jets). The cross sections are normalized to the inclusive Z->mumu cross section. The data are compared to NLO pQCD predictions from BH+SHERPA corrected to the particle level, and the ALPGEN and SHERPA 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.
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Figure 59a
(a) Measured cross section after extrapolation to the common phase space as a function of the exclusive jet multiplicity and (b) as a function of the transverse momentum, pT, of the leading jet in Z(->ee)+jets (red squares) and Z(->mm)+jets events (blue triangles) and for the combination of electron and muon channel. The bottom panel shows the ratio of the cross sections measured in the electron and in the muon channel to the combined cross section. The shaded band corresponds to the uncorrelated part of the systematic uncertainty on the combined cross section and the error bars mark the statistical uncertainties of the cross section ratios. The cross sections measured in the electron and in the muon channel are consistent.
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Figure 59b
(a) Measured cross section after extrapolation to the common phase space as a function of the exclusive jet multiplicity and (b) as a function of the transverse momentum, pT, of the leading jet in Z(->ee)+jets (red squares) and Z(->mm)+jets events (blue triangles) and for the combination of electron and muon channel. The bottom panel shows the ratio of the cross sections measured in the electron and in the muon channel to the combined cross section. The shaded band corresponds to the uncorrelated part of the systematic uncertainty on the combined cross section and the error bars mark the statistical uncertainties of the cross section ratios. The cross sections measured in the electron and in the muon channel are consistent.
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