Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at sqrt(s)= 8 TeV

Abstract

The purely electroweak (EW) cross section for the production of two jets in association with a Z boson, in proton-proton collisions at sqrt(s) = 8 TeV, is measured using data recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 19.7 inverse femtobarns. The electroweak cross section for the lljj final state (with l = e or mu and j representing the quarks produced in the hard interaction) in the kinematic region defined by M[ll] > 50 GeV, M[jj] > 120 GeV, transverse momentum pt[j] > 25 GeV, and pseudorapidity abs(eta[j]) < 5, is found to be sigma[EW](lljj) = 174 +/- 15 (stat) +/- 40 (syst) fb, in agreement with the standard model prediction. The associated jet activity of the selected events is studied, in particular in a signal-enriched region of phase space, and the measurements are found to be in agreement with QCD predictions.

arXiv commentReplaced with published version. Added journal reference and DOI

References in corpus (50)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• FastJet user manual
• Parton distributions for the LHC
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Asymptotic formulae for likelihood-based tests of new physics
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• MadGraph 5 : Going Beyond
• The total top quark pair production cross-section at hadron colliders through O(alpha_S^4)
• Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
• Pileup subtraction using jet areas
• Single-top Wt-channel production matched with parton showers using the POWHEG method
• Determination of Jet Energy Calibration and Transverse Momentum Resolution in CMS
• The Catchment Area of Jets
• Observation of a new boson with mass near 125 GeV in pp collisions at sqrt(s) = 7 and 8 TeV
• Matching matrix elements and shower evolution for top-quark production in hadronic collisions
• MCFM for the Tevatron and the LHC
• Electroweak gauge boson production at hadron colliders through O(alpha_s^2)
• Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV
• NLO single-top production matched with shower in POWHEG: s- and t-channel contributions
• The PDF4LHC Working Group Interim Recommendations
• VBFNLO: A parton level Monte Carlo for processes with electroweak bosons
• ZZ production at hadron colliders in NNLO QCD
• A first unbiased global NLO determination of parton distributions and their uncertainties
• $W^{+}{W}^{-}$ production at hadron colliders in NNLO QCD
• Measurements of Inclusive W and Z Cross Sections in pp Collisions at sqrt(s)=7 TeV
• The PDF4LHC Working Group Interim Report
• Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at sqrt(s) = 7 TeV
• Seeing in Color: Jet Superstructure
• Pileup subtraction for jet shapes
• Probing color-singlet exchange in $Z+2$-jet events at the LHC
• Measurement of the Underlying Event Activity at the LHC with sqrt(s)= 7 TeV and Comparison with sqrt(s) = 0.9 TeV
• VBFNLO: A parton level Monte Carlo for processes with electroweak bosons -- Manual for Version 3.0
• The SM and NLO multileg working group: Summary report
• Jet Production Rates in Association with W and Z Bosons in pp Collisions at sqrt(s) = 7 TeV
• QCD corrections to electroweak l nu_l jj and l^+ l^- jj production
• Measurement of the Underlying Event Activity in Proton-Proton Collisions at 0.9 TeV
• Weak boson fusion production of supersymmetric particles at the LHC
• Vector Boson Fusion Processes as a Probe of Supersymmetric Electroweak Sectors at the LHC
• Measurement of the electroweak production of dijets in association with a Z-boson and distributions sensitive to vector boson fusion in proton-proton collisions at sqrt(s) = 8 TeV using the ATLAS detector
• Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at sqrt(s) = 7 TeV
• A Z-Monitor to Calibrate Higgs Production via Vector Boson Fusion with Rapidity Gaps at the LHC
• Parton Shower Effects on W and Z Production via Vector Boson Fusion at NLO QCD
• Next-to-leading order QCD corrections to photon production via weak-boson fusion

Cited by in corpus (27)

• Systematics of quark/gluon tagging
• Evidence for the Higgs boson decay to a bottom quark-antiquark pair
• On the Topic of Jets: Disentangling Quarks and Gluons at Colliders
• Weakly Supervised Classification in High Energy Physics
• Measurement of vector boson scattering and constraints on anomalous quartic couplings from events with four leptons and two jets in proton-proton collisions at sqrt(s) = 13 TeV
• Evidence for exclusive gamma gamma to W+W- production and constraints on anomalous quartic gauge couplings in pp collisions at sqrt(s) = 7 and 8 TeV
• Multi-Boson Interactions at the LHC
• Search for the standard model Higgs boson produced through vector boson fusion and decaying to b bbar
• Measurement of the charged-particle multiplicity inside jets from $\sqrt{s}=8$ TeV $pp$ collisions with the ATLAS detector
• Measurement of the cross section for electroweak production of Z gamma in association with two jets and constraints on anomalous quartic gauge couplings in proton-proton collisions at sqrt(s) = 8 TeV
• Measurements of electroweak $Wjj$ production and constraints on anomalous gauge couplings with the ATLAS detector
• Differential cross-section measurements for the electroweak production of dijets in association with a $Z$ boson in proton-proton collisions at ATLAS
• Measurement of electroweak-induced production of W gamma with two jets in pp collisions at sqrt(s) = 8 TeV and constraints on anomalous quartic gauge couplings
• Electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Measurement of the cross-section for electroweak production of dijets in association with a $Z$ boson in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Z/gamma* plus Multiple Hard Jets in High Energy Collisions
• Constraining CP violating operators in charged and neutral triple gauge couplings
• Unravelling the anomalous gauge boson couplings in $Z{W}^{\pm }$ production at the LHC and the role of spin-$1$ polarizations
• Measurement of electroweak production of a W boson in association with two jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Theory Predictions for the Pull Angle
• Stairway to discovery: a report on the CMS programme of cross section measurements from millibarns to femtobarns
• Vector Bosons and Jets in Proton Collisions
• Measurement of electroweak production of a W boson and two forward jets in proton-proton collisions at sqrt(s) = 8 TeV
• Investigating the Quantum Properties of Jets and the Search for a Supersymmetric Top Quark Partner with the ATLAS Detector
• Experimental Verification of Two types of Gluon Jets in QCD
• Forward EW Physics at the LHC
• Vector boson fusion and scattering results from CMS