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| CMS-PAS-SMP-20-009 | ||
| Measurement of distributions sensitive to double parton scattering using Z bosons produced in association with jets at 13 TeV | ||
| CMS Collaboration | ||
| March 2021 | ||
| Abstract: Double parton scattering is investigated using a final state of a Z boson and jets. The measurements are performed with proton-proton collision data recorded by the CMS experiment at the LHC at $\sqrt{s}= $ 13 TeV corresponding to an integrated luminosity of 35.9 fb$^{-1}$. Final state distributions are plotted as functions of the angle and the transverse momentum imbalance between the Z boson and the jets. The measured distributions are compared with the predictions from several event generators with different hadronization models and different parameter settings for multiparton interactions. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here. |
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| Figures | |
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Figure 1:
Typical diagrams for Z-plus-two-jet production in (a) a single parton scattering process and (b) double parton scattering. |
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Figure 1-a:
Typical diagram for Z-plus-two-jet production in a single parton scattering process. |
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Figure 1-b:
Typical diagram for Z-plus-two-jet production in double parton scattering. |
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Figure 2:
(a) Differential cross section and the (b) normalized distributions as a function of $\Delta \phi $ between the Z boson and the leading jet for Z${+}{\geq}$1-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 2-a:
Differential cross section as a function of $\Delta \phi $ between the Z boson and the leading jet for Z${+}{\geq}$1-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 2-b:
Normalized differential cross section as a function of $\Delta \phi $ between the Z boson and the leading jet for Z${+}{\geq}$1-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 3:
(a) Differential cross section and the (b) normalized distributions as a function ${p_{\mathrm {T}}}$ imbalance between the Z boson and the leading jet for Z${+}{\geq}$1-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 3-a:
Differential cross section as a function ${p_{\mathrm {T}}}$ imbalance between the Z boson and the leading jet for Z${+}{\geq}$1-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 3-b:
Normalized differential cross section as a function ${p_{\mathrm {T}}}$ imbalance between the Z boson and the leading jet for Z${+}{\geq}$1-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 4:
(a) Differential cross section and the (b) normalized distributions as a function of $\Delta \phi $ between the Z boson and the dijet for Z${+}{\geq}$2-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 4-a:
Differential cross section as a function of $\Delta \phi $ between the Z boson and the dijet for Z${+}{\geq}$2-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 4-b:
Normalized differential cross section as a function of $\Delta \phi $ between the Z boson and the dijet for Z${+}{\geq}$2-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 5:
(a) Differential cross section and the (b) normalized distributions as a function of the ${p_{\mathrm {T}}}$ imbalance between the Z boson and the dijet for Z${+}{\geq}$2-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 5-a:
Differential cross section as a function of the ${p_{\mathrm {T}}}$ imbalance between the Z boson and the dijet for Z${+}{\geq}$2-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 5-b:
Normalized differential cross section as a function of the ${p_{\mathrm {T}}}$ imbalance between the Z boson and the dijet for Z${+}{\geq}$2-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 6:
(a) Differential cross section and the (b) normalized distributions as a function of the ${p_{\mathrm {T}}}$ imbalance between leading and subleading jet for Z${+}{\geq}$2-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 6-a:
Differential cross section as a function of the ${p_{\mathrm {T}}}$ imbalance between leading and subleading jet for Z${+}{\geq}$2-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
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Figure 6-b:
Normalized differential cross section as a function of the ${p_{\mathrm {T}}}$ imbalance between leading and subleading jet for Z${+}{\geq}$2-jet events. The uncertainties of the predictions are shown as coloured bands around the theoretical predictions including statistical, PDF, and scale uncertainties for the NLO MG5_aMC + PYTHIA 8 (with CP5 tune) and the statistical uncertainty only for the LO MG5_aMC + PYTHIA 8 (with CP5 tune), NLO MG5_aMC + PYTHIA 8 (with CDPSTP8S1-WJ tune, CP5 tune with MPI-OFF), NLO MG5_aMC + HERWIG 7 (with tune CH3), and SHERPA predictions. In the bottom panels, the total uncertainty for data is indicated by the solid yellow band centred at 1. |
| Tables | |
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Table 1:
Fiducial selections at particle-level. |
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Table 2:
Uncertainty sources and their effect on the differential cross section distributions. |
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Table 3:
Uncertainty sources and their effect on the normalized distributions. |
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Table 4:
Measured and predicted cross section for Z${+}{\geq}$1-jet and Z${+}{\geq}$2-jet production. Simulations are normalized to NNLO calculations (from FEWZ) and reported cross section values are extracted by applying fiducial selections. Predicted cross sections include statistical and theoretical uncertainty added in quadrature for MG5_aMC + PYTHIA 8 with CP5 tune whereas the other predicted cross sections are reported with only statistical uncertainties. |
| Summary |
| We have measured the differential cross section of Z${+}{\geq}$1-jet and Z${+}{\geq}$2-jet events using proton-proton collision data at $\sqrt{s} $ = 13 TeV corresponding to an integrated luminosity of 35.9 fb$^{-1}$. The production cross section is measured to be 158.5 $\pm$ 0.3 (stat) $\pm$ 7.0 (syst) $\pm$ 1.2 (theo) $\pm$ 4.0 (lumi) pb within the fiducial region of Z${+}{\geq}$1-jet events and 44.8 $\pm$ 0.4 (stat) $\pm$ 3.7 (syst) $\pm$ 0.5 (theo) $\pm$ 1.1 (lumi) pb within the fiducial region of Z${+}{\geq}$2-jet events. The measured integrated cross section is well described by the SHERPA, MG5_aMC + PYTHIA 8, and MG5_aMC + HERWIG7 predictions. The prediction obtained with MG5_aMC + PYTHIA 8 with the DPS specific tune CDPSTP8S1-WJ overestimates the measurements by 10-15% but correctly describes the shape of all the observables. The prediction from MG5_aMC + PYTHIA 8 with CP5 tune, derived by fitting soft QCD measurements, describes well the differential cross section and area normalized distributions while there are parts of the distributions (such as SPI dominated lower regions of $\Delta_{\rm rel}{p_{\mathrm{T}}}$ distributions), which are not completely described. Predictions with other MPI and hadronization models, i.e. SHERPA and MG5_aMC + HERWIG7, also describe the measurements reasonably well. The measured distributions show a significant sensitivity to MPI. Different MPI and hadronization models are able to describe the presented measured distributions. In addition to initial- and final-state radiation, a proper simulation of MPI is essential to describe the shape of the measured distributions and hence these results will be important input to further improve DPS specific tunes and a global tune in combination with other soft QCD measurements. |
| References | ||||
| 1 | ATLAS Collaboration | 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 | JHEP 07 (2013) 032 | 1304.7098 |
| 2 | ATLAS Collaboration | Measurement of the production cross section for $ Z/\gamma^* $ in association with jets in pp collisions at $ \sqrt{s} = $ 7 TeV with the ATLAS detector. | PRD 85 (2012) 032009 | 1111.2690 |
| 3 | CMS Collaboration | Jet production rates in association with $ W $ and $ Z $ bosons in pp collisions at $ \sqrt{s}= $ 7 TeV | JHEP 01 (2012) 010 | CMS-EWK-10-012 1110.3226 |
| 4 | CMS Collaboration | Measurements of jet multiplicity and differential production cross sections of $ Z + $ jets events in proton-proton collisions at $ \sqrt{s} = $ 7 TeV | PRD 91 (2015) 052008 | CMS-SMP-12-017 1408.3104 |
| 5 | CMS Collaboration | Event shapes and azimuthal correlations in $ Z $ + Jets events in $ pp $ collisions at $ \sqrt{s}= $ 7 TeV | PLB 722 (2013) 238 | CMS-EWK-11-021 1301.1646 |
| 6 | CMS Collaboration | Comparison of the Z/$ \gamma ^{*} $ + jets to $ \gamma $ + jets cross sections in pp collisions at $ \sqrt{s}= $ 8 TeV | JHEP 10 (2015) 128 | CMS-SMP-14-005 1505.06520 |
| 7 | CMS Collaboration | Measurements of differential production cross sections for a Z boson in association with jets in pp collisions at $ \sqrt{s}= $ 8 TeV | JHEP 04 (2017) 022 | CMS-SMP-14-013 1611.03844 |
| 8 | CMS Collaboration | Measurement of differential cross sections for Z boson production in association with jets in proton-proton collisions at $ \sqrt{s} = $ 13 TeV | EPJC 78 (2018) 965 | CMS-SMP-16-015 1804.05252 |
| 9 | ATLAS Collaboration | Measurements of the production cross-section for a $ Z $ boson in association with $ b $-jets in proton-proton collisions at $ \sqrt{s} = $ 13 TeV with the ATLAS detector | JHEP 07 (2020) 044 | 2003.11960 |
| 10 | ATLAS Collaboration | Measurement of hard double-parton interactions in W$ (\to {l\nu}) $+ 2 jet events at $ \sqrt{s} = $ 7 TeV with the ATLAS detector | New J. Phys. 15 (2013) 033038 | 1301.6872 |
| 11 | CMS Collaboration | Study of double parton scattering using W + 2-jet events in proton-proton collisions at $ \sqrt{s} = $ 7 TeV | JHEP 03 (2014) 032 | CMS-FSQ-12-028 1312.5729 |
| 12 | CMS Collaboration | Constraints on the double-parton scattering cross section from same-sign W boson pair production in proton-proton collisions at $ \sqrt{s}= $ 8 TeV | JHEP 02 (2018) 032 | CMS-FSQ-16-005 1712.02280 |
| 13 | ATLAS Collaboration | Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at $ \sqrt s= $ 8 TeV with the ATLAS detector | PLB 790 (2019) 595 | 1811.11094 |
| 14 | ATLAS Collaboration | Observation and measurements of the production of prompt and non-prompt J/$ \psi $ mesons in association with a $ Z $ boson in pp collisions at $ \sqrt{s} = $ 8 TeV with the ATLAS detector | EPJC 75 (2015) 229 | 1412.6428 |
| 15 | D0 Collaboration | Double parton interactions in $ \gamma $+3 jet events in p$ \overline{\mbox{p}} $ collisions $ \sqrt{s}= $ 1.96 TeV. | PRD 81 (2010) 052012 | 0912.5104 |
| 16 | CMS Collaboration | Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements | EPJC 80 (2020) 4 | CMS-GEN-17-001 1903.12179 |
| 17 | CMS Collaboration | Event generator tunes obtained from underlying event and multiparton scattering measurements | EPJC 76 (2016) 155 | CMS-GEN-14-001 1512.00815 |
| 18 | CMS Collaboration | Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at $ \sqrt{s} = $ 13 TeV | JINST 13 (2018) P06015 | CMS-MUO-16-001 1804.04528 |
| 19 | CMS Collaboration | Performance of the CMS Level-1 trigger in proton-proton collisions at $ \sqrt{s} = $ 13 TeV | JINST 15 (2020) P10017 | CMS-TRG-17-001 2006.10165 |
| 20 | CMS Collaboration | The CMS trigger system | JINST 12 (2017) P01020 | CMS-TRG-12-001 1609.02366 |
| 21 | CMS Collaboration | The CMS experiment at the CERN LHC | JINST 3 (2008) S08004 | CMS-00-001 |
| 22 | J. Alwall et al. | Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions | EPJC 53 (2008) 473 | 0706.2569 |
| 23 | T. Sjostrand, S. Mrenna, and P. Z. Skands | A brief introduction to PYTHIA 8.1 | CPC 178 (2008) 852 | 0710.3820 |
| 24 | R. D. Ball et al. | Parton distributions with LHC data | NPB 867 (2013) 244 | 1207.1303 |
| 25 | R. Frederix and S. Frixione | Merging meets matching in MC@NLO | JHEP 12 (2012) 061 | 1209.6215 |
| 26 | J. Alwall et al. | MadGraph 5 : Going beyond | JHEP 06 (2011) 128 | 1106.0522 |
| 27 | J. Alwall, S. de Visscher, and F. Maltoni | QCD radiation in the production of heavy colored particles at the LHC | JHEP 02 (2009) 017 | 0810.5350 |
| 28 | NNPDF Collaboration | Parton distributions for the LHC Run II | JHEP 04 (2015) 040 | 1410.8849 |
| 29 | T. Gleisberg et al. | Event generation with SHERPA 1.1 | JHEP 02 (2009) 007 | 0811.4622 |
| 30 | M. Czakon, P. Fiedler, and A. Mitov | Total top-quark pair-production cross section at hadron colliders through $ O(\alpha^4_S) $ | PRL 110 (2013) 252004 | 1303.6254 |
| 31 | P. Barnreuther, M. Czakon, and A. Mitov | Percent level precision physics at the Tevatron: first genuine NNLO QCD corrections to $ q \bar{q} \to t \bar{t} + X $ | PRL 109 (2012) 132001 | 1204.5201 |
| 32 | M. Beneke, P. Falgari, S. Klein, and C. Schwinn | Hadronic top-quark pair production with NNLL threshold resummation | NPB 855 (2012) 695 | 1109.1536 |
| 33 | M. Cacciari et al. | Top-pair production at hadron colliders with next-to-next-to-leading logarithmic soft-gluon resummation | PLB 710 (2012) 612 | 1111.5869 |
| 34 | M. Czakon and A. Mitov | NNLO corrections to top-pair production at hadron colliders: the all-fermionic scattering channels | JHEP 12 (2012) 054 | 1207.0236 |
| 35 | M. Czakon and A. Mitov | NNLO corrections to top pair production at hadron colliders: the quark-gluon reaction | JHEP 01 (2013) 080 | 1210.6832 |
| 36 | M. Czakon and A. Mitov | Top++: A program for the calculation of the top-pair cross-section at hadron colliders | CPC 185 (2014) 2930 | 1112.5675 |
| 37 | J. M. Campbell, R. K. Ellis, and C. Williams | Vector boson pair production at the LHC | JHEP 07 (2011) 018 | 1105.0020 |
| 38 | N. Kidonakis | Top Quark Production | in Proceedings, Helmholtz International Summer School on Physics of Heavy Quarks and Hadrons (HQ 2013): JINR, Dubna (2014) | 1311.0283 |
| 39 | GEANT4 Collaboration | GEANT4: A simulation toolkit | NIMA 506 (2003) 250 | |
| 40 | M. Bahr et al. | Herwig++ physics and manual | EPJC 58 (2008) 639 | 0803.0883 |
| 41 | J. Bellm et al. | Herwig 7.0/Herwig++ 3.0 release note | EPJC 76 (2016) 196 | 1512.01178 |
| 42 | J. Bellm et al. | Herwig 7.1 release note | CERN theory preprint CERN-PH-TH-2017-109 | 1705.06919 |
| 43 | CMS Collaboration | Extraction and validation of a set of HERWIG 7 tunes from CMS underlying-event measurements | CMS-GEN-19-001 2011.03422 |
|
| 44 | K. Melnikov and F. Petriello | Electroweak gauge boson production at hadron colliders through O($ \alpha(s)^{2} $) | PRD 74 (2006) 114017 | hep-ph/0609070 |
| 45 | CMS Collaboration | Particle-flow reconstruction and global event description with the CMS detector | JINST 12 (2017) P10003 | CMS-PRF-14-001 1706.04965 |
| 46 | M. Cacciari, G. P. Salam, and G. Soyez | The anti-$ k_t $ jet clustering algorithm | JHEP 04 (2008) 063 | 0802.1189 |
| 47 | M. Cacciari, G. P. Salam, and G. Soyez | FastJet User Manual | EPJC 72 (2012) 1896 | 1111.6097 |
| 48 | CMS Collaboration | Measurement of the inclusive $ W $ and $ Z $ production cross sections in pp collisions at $ \sqrt{s}= $ 7 TeV | JHEP 10 (2011) 132 | CMS-EWK-10-005 1107.4789 |
| 49 | M. Cacciari and G. P. Salam | Pileup subtraction using jet areas | PLB 659 (2008) 119 | 0707.1378 |
| 50 | CMS Collaboration | Jet energy scale and resolution performance with 13 TeV data collected by CMS in 2016 | CDS | |
| 51 | CMS Collaboration | Jet performance in pp collisions at 7 TeV | CDS | |
| 52 | CMS Collaboration | Pileup jet identification | CMS-PAS-JME-13-005 | CMS-PAS-JME-13-005 |
| 53 | CMS Collaboration | Pileup mitigation at CMS in 13 TeV data | JINST 15 (2020) P09018 | CMS-JME-18-001 2003.00503 |
| 54 | CMS Collaboration | Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at $ \sqrt{s} = $ 8 TeV | JINST 10 (2015) P06005 | CMS-EGM-13-001 1502.02701 |
| 55 | D0 Collaboration | Double parton interactions in $ \gamma$+3-jet and $ \gamma$+b/c-jet+2-jet events in $\mathrm{p \bar{p}} $ collisions at $ \sqrt s= $ 1.96 TeV | PRD 89 (2014) 072006 | 1402.1550 |
| 56 | S. Schmitt | TUnfold: an algorithm for correcting migration effects in high energy physics | JINST 7 (2012) T10003 | 1205.6201 |
| 57 | A. N. Tikhonov | Solution of incorrectly formulated problems and the regularization method | Soviet Math. Dokl. 4 (1963) 1035 | |
| 58 | J. Butterworth et al. | PDF4LHC recommendations for LHC Run II | JPG 43 (2016) 023001 | 1510.03865 |
| 59 | CMS Collaboration | CMS luminosity measurements for the 2016 data taking period | CMS-PAS-LUM-17-001 | CMS-PAS-LUM-17-001 |
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