Measurements of $W^{\pm }Z$ production cross sections in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector and limits on anomalous gauge boson self-couplings

Abstract

This paper presents measurements of $W^{\pm }Z$ production in $pp$ collisions at a center-of-mass energy of 8 TeV. The gauge bosons are reconstructed using their leptonic decay modes into electrons and muons. The data were collected in 2012 by the ATLAS experiment at the Large Hadron Collider, and correspond to an integrated luminosity of 20.3 fb${}^{-1}$. The measured inclusive cross section in the detector fiducial region is ${\sigma }_{W^{\pm }Z\to {\ell }^{{}^{\prime }}\nu \ell \ell }=35.1\pm$ 0.9 (stat.) $\pm 0.8$ (sys.) $\pm 0.8$ (lumi.) fb, for one leptonic decay channel. In comparison, the next-to-leading-order Standard Model expectation is 30.0 $\pm$ 2.1 fb. Cross sections for $W^{+}Z$ and $W^{-}Z$ production and their ratio are presented as well as differential cross sections for several kinematic observables. Limits on anomalous triple gauge boson couplings are derived from the transverse mass spectrum of the $W^{\pm }Z$ system. From the analysis of events with a $W$ and a $Z$ boson associated with two or more forward jets an upper limit at 95% confidence level on the $W^{\pm }Z$ scattering cross section of 0.63 fb, for each leptonic decay channel, is established, while the Standard Model prediction at next-to-leading order is 0.13 fb. Limits on anomalous quartic gauge boson couplings are also extracted.

38 pages plus author list + cover pages (56 pages total), 16 figures, 9 tables. Submitted to Phys. Rev. D. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2014-02/

References in corpus (21)

• Parton distributions for the LHC
• Big-Bang Nucleosynthesis
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• VBFNLO: A parton level Monte Carlo for processes with electroweak bosons
• ZZ production at hadron colliders in NNLO QCD
• $W^{+}{W}^{-}$ production at hadron colliders in NNLO QCD
• Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
• Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data
• Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton-proton collision data
• t tbar W and t tbar Z Hadroproduction at NLO accuracy in QCD with Parton Shower and Hadronization effects
• $W^{\pm }Z$ production at the LHC: fiducial cross sections and distributions in NNLO QCD
• 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
• Determination of the strange quark density of the proton from ATLAS measurements of the W->l nu and Z->ll cross sections
• Evidence for Electroweak Production of $W^{\pm }{W}^{\pm }jj$ in $pp$ Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector
• Search for supersymmetry at sqrt(s)=8 TeV in final states with jets and two same-sign leptons or three leptons with the ATLAS detector
• Measurement of the sum of WW and WZ production with W+dijet events in pp collisions at sqrt(s) = 7 TeV
• Wgamma and Zgamma production at the LHC in NNLO QCD
• Measurement of the $WZ\to \ell \nu \ell \ell$ cross section and limits on anomalous triple gauge couplings in $p\bar{p}$ collisions at $\sqrt{s}$ = 1.96 TeV
• Gluon-induced QCD corrections to pp --> ZZ --> l anti-l l' anti-l'

Cited by in corpus (65)

• Fully differential NNLO computations with MATRIX
• $W^{\pm }Z$ production at the LHC: fiducial cross sections and distributions in NNLO QCD
• The Gauge-Higgs Legacy of the LHC Run I
• The Gauge-Higgs Legacy of the LHC Run II
• Anomalous Triple Gauge Couplings in the Effective Field Theory Approach at the LHC
• Measurement of $W^{\pm }Z$ production cross sections and gauge boson polarisation in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Electroweak Sector Under Scrutiny: A Combined Analysis of LHC and Electroweak Precision Data
• Positivity bounds on vector boson scattering at the LHC
• Electroweak Precision Tests in High-Energy Diboson Processes
• Measurements of production cross sections of WZ and same-sign WW boson pairs in association with two jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• 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
• Novel measurements of anomalous triple gauge couplings for the LHC
• Reinterpretation of LHC Results for New Physics: Status and Recommendations after Run 2
• Multi-Boson Interactions at the LHC
• Observation of electroweak $W^{\pm }Z$ boson pair production in association with two jets in $pp$ collisions at $\sqrt{s}=$ 13 TeV with the ATLAS detector
• Measurement of electroweak WZ boson production and search for new physics in WZ $+$ two jets events in pp collisions at $\sqrt{s}=$ 13 TeV
• Search for anomalous electroweak production of vector boson pairs in association with two jets in proton-proton collisions at 13 TeV
• Time to Go Beyond Triple-Gauge-Boson-Coupling Interpretation of $W$ Pair Production
• Validity of SMEFT studies of VH and VV Production at NLO
• 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
• Measurement of the WZ production cross section in pp collisions at sqrt(s) = 13 TeV
• Measurement of the $W^{\pm }Z$ boson pair-production cross section in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS Detector
• Measurement of $W^{\pm }{W}^{\pm }$ vector-boson scattering and limits on anomalous quartic gauge couplings with the ATLAS detector
• Measurements of the pp $\to$ WZ inclusive and differential production cross section and constraints on charged anomalous triple gauge couplings at $\sqrt{s}=$ 13 TeV
• Measurement of the WZ production cross section in pp collisions at sqrt{s} = 7 and 8 TeV and search for anomalous triple gauge couplings at sqrt{s} = 8 TeV
• QCD Corrections in SMEFT Fits to $WZ$ and $WW$ Production
• Anomalous triple-gauge-boson interactions in vector-boson pair production with RECOLA2
• 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
• Search for anomalous couplings in boosted WW/WZ to l nu q q-bar production in proton-proton collisions at sqrt(s) = 8 TeV
• SMEFT Corrections to $Z$ Boson Decays
• Electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for resonant $WZ$ production in the fully leptonic final state in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• LHC Collider Phenomenology of Minimal Universal Extra Dimensions
• Measurement of the inclusive and differential WZ production cross sections, polarization angles, and triple gauge couplings in pp collisions at $\sqrt{s}=$ 13 TeV
• Event-Based Transverse Momentum Resummation
• Search for anomalous triple gauge couplings in WW and WZ production in lepton + jet events in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for triboson $W^{\pm }{W}^{\pm }{W}^{\mp }$ production in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Effect of Fermionic Operators on the Gauge Legacy of the LHC Run I
• Probing the Higgs self-coupling through double Higgs production in vector boson scattering at the LHC
• Search for the electroweak diboson production in association with a high-mass dijet system in semileptonic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Same-sign WW scattering at the LHC: can we discover BSM effects before discovering new states?
• Next-to-leading-order electroweak corrections to the production of three charged leptons plus missing energy at the LHC
• Search for the production of W${}^{\pm }$W${}^{\pm }$W${}^{\mp }$ events at $\sqrt{s}=$ 13 TeV
• Vector boson scattering: Recent experimental and theory developments
• Measurement of $WW/WZ\to \ell \nu q{q}^{\prime }$ production with the hadronically decaying boson reconstructed as one or two jets in $pp$ collisions at $\sqrt{s}=8$ TeV with ATLAS, and constraints on anomalous gauge couplings
• A Reduced basis for CP violation in SMEFT at colliders and its application to Diboson production
• Unravelling the anomalous gauge boson couplings in $Z{W}^{\pm }$ production at the LHC and the role of spin-$1$ polarizations
• The linear-non-linear frontier for the Goldstone Higgs
• Measurement of electroweak production of a W boson in association with two jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Parton-shower effects in electroweak $WZjj$ production at the next-to-leading order of QCD
• Constraints on the relaxion mechanism with strongly interacting vector-fermions
• Light-Quark Dipole Operators at LHC
• Probing the anomalous triple gauge boson couplings in $e^{+}{e}^{-}\to W^{+}{W}^{-}$ using $W$ polarizations with polarized beams
• Probing impact-parameter dependent nuclear parton densities from double parton scatterings in heavy-ion collisions
• Electroweak-Skyrmion as Topological Dark Matter
• Measurements of the electroweak diboson production cross sections in proton-proton collisions at $\sqrt{s}=$ 5.02 TeV using leptonic decays
• Measurement of the $WW$ and $WZ$ production cross section using final states with a charged lepton and heavy-flavor jets in the full CDF Run II data set
• QCD effects in electroweak $WZjj$ production at current and future hadron colliders
• More on Electroweak-Skyrmion
• Role of polarizations and spin-spin correlations of $W^{\prime }s$ in $e^{-}{e}^{+}\to W^{-}{W}^{+}$ at $\sqrt{s}=250$ GeV to probe anomalous $W^{-}{W}^{+}Z/\gamma$ couplings
• Anomalous couplings in WZ production beyond NLO QCD
• Anomalous production of massive gauge boson pairs at muon colliders
• Anomalous triple-gauge-boson interactions in diboson production
• Effects of anomalous triple-gauge-boson interactions in diboson production with RECOLA2
• Di-vector Boson Production with Jets at the LHC