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  • Observation of ▫$WZ \gamma$▫ production in ▫$\it{pp}$▫ collisions at ▫$\sqrt s = 13$▫ TeV with the ATLAS Detector
    Aad, Georges ...
    This Letter reports the observation of W Z γ production and a measurement of its cross section using 140.1 ± 1.2     fb − 1 of proton-proton collision data recorded at a center-of-mass energy of 13 ... TeV by the ATLAS detector at the Large Hadron Collider. The W Z γ production cross section, with both the W and Z bosons decaying leptonically, p p → W Z γ → ℓ ′ ± ν ℓ + ℓ − γ ( ℓ ( ′ ) = e , μ ), is measured in a fiducial phase-space region defined such that the leptons and the photon have high transverse momentum and the photon is isolated. The cross section is found to be 2.01 ± 0.30 ( stat ) ± 0.16 ( syst )     fb . The corresponding standard model predicted cross section calculated at next-to-leading order in perturbative quantum chromodynamics and at leading order in the electroweak coupling constant is 1.50 ± 0.06     fb . The observed significance of the W Z γ signal is 6.3 σ , compared with an expected significance of 5.0 σ .
    Vir: Physical review letters online. - ISSN 1079-7114 (Vol. 132, Jan. 2024, [article no.] 021802, str. 021802-1- 021802-21)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2024
    Jezik - angleški
    COBISS.SI-ID - 195061251

    Povezava(-e):

    https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.021802
    DOI

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