VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Test of lepton flavour universality in W-boson decays into electrons and ▫$\tau$▫-leptons using ▫$\it {pp}$▫ collisions at ▫$\sqrt s$▫= 13 TeV with the ATLAS detector
    Aad, Georges ...
    A measurement of the ratio of the branching fractions, Rτ/e = B(W → τν)/B(W → eν), is performed using a sample of W bosons originating from top-quark decays to final states containing τ-leptons or ... electrons. This measurement uses pp collisions at = 13 TeV, collected by the ATLAS experiment at the Large Hadron Collider during Run 2, corresponding to an integrated luminosity of 140 fb−1. The W → τντ (with τ → eνeντ) and W → eνe decays are distinguished using the differences in the impact parameter distributions and transverse momentum spectra of the electrons. The measured ratio of branching fractions Rτ/e = 0.975 ± 0.012 (stat.) ± 0.020 (syst.), is consistent with the Standard Model assumption of lepton flavour universality in W-boson decays.
    Vir: The journal of high energy physics [Elektronski vir]. - ISSN 1029-8479 (Vol. 2025, [article number] 38, 2025, 1-49 str.)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2025
    Jezik - angleški
    COBISS.SI-ID - 238921731

    Povezava(-e):

    https://link.springer.com/article/10.1007/JHEP05(2025)038
    DOI

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