Observation of electroweak W${}^{+}$W${}^{-}$ pair production in association with two jets in proton-proton collisions at $\sqrt{s}$ = 13 TeV

Abstract

An observation is reported of the electroweak production of a W${}^{+}$W${}^{-}$ pair in association with two jets, with both W bosons decaying leptonically. The data sample corresponds to an integrated luminosity of 138 fb${}^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV, collected by the CMS detector at the CERN LHC. Events are selected by requiring exactly two opposite-sign leptons (electrons or muons) and two jets with large pseudorapidity separation and high dijet invariant mass. Events are categorized based on the flavor of the final-state leptons. A signal is observed with a significance of 5.6 standard deviations (5.2 expected) with respect to the background-only hypothesis. The measured fiducial cross section is 10.2 $\pm$ 2.0 fb and this value is consistent with the standard model prediction of 9.1 $\pm$ 0.6 fb.

arXiv commentReplaced with the published version. Added the journal reference. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-21-001 (CMS Public Pages)

References in corpus (32)

• 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
• 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
• An Introduction to PYTHIA 8.2
• FastJet user manual
• Asymptotic formulae for likelihood-based tests of new physics
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• Parton distributions from high-precision collider data
• An update on vector boson pair production at hadron colliders
• Particle-flow reconstruction and global event description with the CMS detector
• Event generator tunes obtained from underlying event and multiparton scattering measurements
• Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
• Parton distributions with QED corrections
• Soft-gluon resummation for Higgs boson production at hadron colliders
• Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements
• Trial factors for the look elsewhere effect in high energy physics
• Pileup Per Particle Identification
• Precision luminosity measurement in proton-proton collisions at $\sqrt{s}=$ 13 TeV in 2015 and 2016 at CMS
• On the spin and parity of a single-produced resonance at the LHC
• Electron and photon reconstruction and identification with the CMS experiment at the CERN LHC
• Jet Flavour Classification Using DeepJet
• Probing color-singlet exchange in $Z+2$-jet events at the LHC
• Study of vector boson scattering and search for new physics in events with two same-sign leptons and two jets
• Measurements of properties of the Higgs boson decaying to a W boson pair in pp collisions at $\sqrt{s}=$ 13 TeV
• Some Dipole Shower Studies
• Longitudinal WW scattering in light of the "Higgs" discovery
• NNLOPS accurate predictions for $W^{+}{W}^{-}$ production
• WW Scattering in the Era of Post Higgs Discovery
• Measurements of production cross sections of polarized same-sign W boson pairs in association with two jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Parton-shower effects in Higgs production via Vector-Boson Fusion
• A sensitivity study of VBS and diboson WW to dimension-6 EFT operators at the LHC