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

Abstract

A measurement of vector boson scattering and constraints on anomalous quartic gauge couplings from events with two Z bosons and two jets are presented. The analysis is based on a data sample of proton-proton collisions at sqrt(s) = 13 TeV collected with the CMS detector and corresponding to an integrated luminosity of 35.9 inverse femtobarns. The search is performed in the fully leptonic final state ZZ to lll'l', where l, l' = e, mu. The electroweak production of two Z bosons in association with two jets is measured with an observed (expected) significance of 2.7 (1.6) standard deviations. A fiducial cross section for the electroweak production is measured to be sigma[EW](pp -> ZZjj -> lll'l'jj) = 0.40 -0.16 +0.21 (stat) -0.09 +0.13 (syst) fb, which is consistent with the standard model prediction. Limits on anomalous quartic gauge couplings are determined in terms of the effective field theory operators T0, T1, T2, T8, and T9. This is the first measurement of vector boson scattering in the ZZ channel at the LHC.

Replaced with the published version. Added the journal reference and DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-17-006/ (CMS Public Pages). arXiv admin note: text overlap with arXiv:1709.08601

References in corpus (21)

• 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
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Particle-flow reconstruction and global event description with the CMS detector
• Pileup subtraction using jet areas
• The CMS trigger system
• Description and performance of track and primary-vertex reconstruction with the CMS tracker
• Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations
• MCFM for the Tevatron and the LHC
• Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV
• Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
• Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV
• VBFNLO: A parton level Monte Carlo for processes with electroweak bosons
• p p -> j j e+/- mu+/- nu nu and j j e+/- mu-/+ nu nu at O(α_{em}^6) and O(α_{em}^4 α_s^2) for the Study of the Quartic Electroweak Gauge Boson Vertex at LHC
• Evidence for Electroweak Production of $W^{\pm }{W}^{\pm }jj$ in $pp$ Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector
• Study of vector boson scattering and search for new physics in events with two same-sign leptons and two jets
• PHANTOM: a Monte Carlo event generator for six parton final states at high energy colliders
• Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at sqrt(s)= 8 TeV
• Search for anomalous electroweak production of $WW/WZ$ in association with a high-mass dijet system in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector

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• SMEFT analysis of vector boson scattering and diboson data from the LHC Run II
• Vector-Boson Scattering at the LHC: unravelling the Electroweak sector
• Vector Boson Scattering Processes: Status and Prospects
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• A sensitivity study of VBS and diboson WW to dimension-6 EFT operators at the LHC
• Detecting anomalous quartic gauge couplings using the isolation forest machine learning algorithm
• Searching for anomalous quartic gauge couplings at muon colliders using principle component analysis
• Tri-photon at muon collider: a new process to probe the anomalous quartic gauge couplings
• Full NLO predictions for vector-boson scattering into Z bosons and its irreducible background at the LHC
• Extract the energy scale of anomalous $\gamma \gamma \to W^{+}{W}^{-}$ scattering in the vector boson scattering process using artificial neural networks
• NLO QCD and EW corrections to vector-boson scattering into ${\mathrm{W}}^{+}{\mathrm{W}}^{-}$ at the LHC
• Tree-level Interference in VBF production of Vh
• Using k-means assistant event selection strategy to study anomalous quartic gauge couplings at muon colliders
• Study of the projected sensitivity on the anomalous quartic gauge couplings via $Z\gamma \gamma$ production at the CLIC
• Polarization measurement for the dileptonic channel of $W^{+}{W}^{-}$ scattering using generative adversarial network
• Effective field theory versus UV-complete model: vector boson scattering as a case study
• Detect anomalous quartic gauge couplings at muon colliders with quantum kernel k-means
• Searching for gluon quartic gauge couplings at muon colliders using the auto-encoder
• Optimize the event selection strategy to study the anomalous quartic gauge couplings at muon colliders using the support vector machine and quantum support vector machine
• Search for Neutral Triple Gauge Couplings with $ZZ$ Production at Future Electron Positron Colliders
• Anomalous production of massive gauge boson pairs at muon colliders
• Search for anomalous quartic gauge couplings in the process ${\mu }^{+}{\mu }^{-}\to \bar{\nu }\nu \gamma \gamma$ with a nested local outlier factor
• Expected sensitivity on the anomalous quartic neutral gauge couplings in $\gamma \gamma$ collisions at the CLIC
• Vector boson fusion and scattering results from CMS
• Constraints on Anomalous Quartic Gauge Couplings via Electroweak Production of $\gamma \gamma jj$ at Future Proton-Proton Colliders
• Evidence of ZZ$\gamma$ production and observation of $4\ell \gamma$ in proton-proton collisions at $\sqrt{s}$ = 13 TeV