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Institut Jožef Stefan, Ljubljana (IJS)
  • Observation of ▫$\it{W} \gamma\gamma$▫ triboson production in proton-proton collisions at ▫$\sqrt s = {13}$▫ TeV with the ATLAS detector
    Aad, Georges ...
    This letter reports the observation of 𝑊 (𝓁𝜈)𝛾𝛾 production in proton-proton collisions. This measurement uses the full Run 2 sample of events recorded at a center-of-mass energy of √𝑠 = 13 TeV ... by the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fb−1. Events with a leptonically-decaying 𝑊 boson and at least two photons are considered. The background-only hypothesis is rejected with an observed and expected significance of 5.6 standard deviations. The inclusive fiducial production cross section of 𝑊 (𝑒𝜈)𝛾𝛾 and 𝑊 (𝜇𝜈)𝛾𝛾 events is measured to be 𝜎fid = 13.8 ± 1.1(stat)+2.1 −2.0(syst) ± 0.1(lumi) fb, in agreement with the Standard Model prediction.
    Vir: Physics letters. B [Elektronski vir]. - ISSN 1873-2445 (Vol. 848, 2024, [article no.] 138400, str. 1-24)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2024
    Jezik - angleški
    COBISS.SI-ID - 194931459

    Povezava(-e):

    https://cds.cern.ch/record/2866974/files/Publication.pdf
    DOI

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