Measurements of electroweak WZ boson pair production in association with two jets in pp collisions at = 13 TeV with the ATLAS detector
Collaboration
55 pages
Published in:
- JHEP 06 (2024) 192
- Published: Jun 27, 2024
e-Print:
- 2403.15296 [hep-ex]
DOI:
- 10.1007/JHEP06(2024)192 (publication)
Report number:
- CERN-EP-2024-082
Experiments:
Citations per year
Abstract: (Springer)
Measurements of integrated and differential cross-sections for electroweak WZ production in association with two jets (WZjj) in proton-proton collisions are presented. The data collected by the ATLAS detector at the Large Hadron Collider from 2015 to 2018 at a centre-of-mass energy of = 13 TeV are used, corresponding to an integrated luminosity of 140 fb. The WZjj candidate events are reconstructed using leptonic decay modes of the gauge bosons. Events containing three identified leptons, either electrons or muons, and two jets are selected. Processes involving pure electroweak WZjj production at Born level are separated from WZjj production involving a strong coupling. The measured integrated fiducial cross-section of electroweak WZjj production per lepton flavour is = 0.368 ± 0.037 (stat.) ± 0.059 (syst.) ± 0.003 (lumi.) fb, where ℓ and ℓ′ are either an electron or a muon. Respective cross-sections of electroweak and strong WZjj production are measured separately for events with exactly two jets or with more than two jets, and in three bins of the invariant mass of the two jets. The inclusive WZjj production cross-section, without separating electroweak and strong production, is also measured to be = 1.462 ± 0.063 (stat.) ± 0.118 (syst.) ± 0.012 (lumi.) fb, per lepton flavour. The inclusive WZjj production cross-section is measured differentially for several kinematic observables. Finally, the measurements are used to constrain anomalous quartic gauge couplings by extracting 95% confidence level intervals on dimension-8 operators.[graphic not available: see fulltext]Note:
- 54 pages in total, author list starting page 37, 13 figures, 5 tables, published in JHEP 06 (2024) 192. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2018-35/
- Beyond Standard Model
- Hadron-Hadron Scattering
- Proton-Proton Scattering
- Vector Boson Production
- p p: colliding beams
- lepton: flavor
- p p: scattering
- gauge boson: decay modes
- channel cross section: measured
- coupling: gauge
References(71)
Figures(31)
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