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Measurement of the Higgs boson mass in the H → ZZ.sup.⁎./sup. → 4ℓ decay channel using 139 fb.sup.−1./sup. of √s=13 TeV pp collisions recorded by the ATLAS detector at the LHC

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    0578237 - FZÚ 2024 RIV NL eng J - Journal Article
    Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Federičová, Pavla - Hejbal, Jiří - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2887 authors
    Measurement of the Higgs boson mass in the H → ZZ → 4ℓ decay channel using 139 fb−1 of √s=13 TeV pp collisions recorded by the ATLAS detector at the LHC.
    Physics Letters. B. Roč. 843, Aug (2023), č. článku 137880. ISSN 0370-2693. E-ISSN 1873-2445
    Research Infrastructure: CERN-CZ III - 90240
    Institutional support: RVO:68378271
    Keywords : CERN LHC Coll * ATLAS * muon: pair production
    OECD category: Particles and field physics
    Impact factor: 4.3, year: 2022
    Method of publishing: Open access

    The mass of the Higgs boson is measured in the H→ZZ⁎→4ℓ decay channel. The analysis uses proton–proton collision data from the Large Hadron Collider at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector between 2015 and 2018, corresponding to an integrated luminosity of 139 fb−1. The measured value of the Higgs boson mass is 124.99±0.18(stat.)±0.04(syst.) GeV. In final states with muons, this measurement benefits from an improved momentum-scale calibration relative to that adopted in previous publications. The measurement also employs an analytic model that takes into account the invariant-mass resolution of the four-lepton system on a per-event basis and the output of a deep neural network discriminating signal from background events.
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