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Preprint
Report number arXiv:2412.15123 ; CERN-EP-2024-321
Title Observation of VVZ production at s=13 TeV with the ATLAS detector
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Author(s) ATLAS Collaboration  Visa alla 2890 författare
Corporate author(s) ATLAS Collaboration
Publication 2024
Imprint 19 Dec 2024
Number of pages 42
Note 42 pages total, autho list starting on page 24, 5 figures, 8 tables, submitted to Phys. Lett. B. All figures including auxillary figures available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2020-08
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Keywords electroweak interaction ; particle and resonance production ; experimental results ; triboson production ; effective field theory
Abstract A search for the production of three massive vector bosons, VVZ(V=W,Z), in proton-proton collisions at s=13 TeV is performed using data with an integrated luminosity of 140 fb1 recorded by the ATLAS detector at the Large Hadron Collider. Events produced in the leptonic final states WWZνν (=e,μ), WZZν, ZZZ, and the semileptonic final states WWZqqν and WZZνqq, are analysed. The measured cross section for the ppVVZ process is 66090+93(stat.)81+88(syst.) fb, and the observed (expected) significance is 6.4 (4.7) standard deviations, representing the observation of VVZ production. In addition, the measured cross section for the ppWWZ process is 442±94(stat.)52+60(syst.) fb, and the observed (expected) significance is 4.4 (3.6) standard deviations, representing evidence of WWZ production. The measured cross sections are consistent with the Standard Model predictions. Constraints on physics beyond the Standard Model are also derived in the effective field theory framework by setting limits on Wilson coefficients for dimension-8 operators describing anomalous quartic gauge boson couplings.
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Copyright/License Preprint: © 2024-2025 CERN (License: CC-BY-4.0)
Submitted by tatjana.lenz@cern.ch



 


 Journalen skapades 2024-12-19, och modifierades senast 2025-01-10


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