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Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the ℓℓbb and ℓℓWW final states in pp collisions at √s=13 TeV with the ATLAS detector

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    0549004 - FZÚ 2022 RIV DE eng J - Journal Article
    Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2928 authors
    Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the ℓℓbb and ℓℓWW final states in pp collisions at √s=13 TeV with the ATLAS detector.
    European Physical Journal C. Roč. 81, č. 5 (2021), č. článku 396. ISSN 1434-6044. E-ISSN 1434-6052
    R&D Projects: GA MŠk(CZ) LTT17018
    Research Infrastructure: CERN-CZ II - 90104
    Institutional support: RVO:68378271
    Keywords : ATLAS * CERN LHC Coll * channel cross section * branching ratio: upper limit
    OECD category: Particles and field physics
    Impact factor: 4.991, year: 2021
    Method of publishing: Open access

    A search for a heavy neutral Higgs boson, A, decaying into a Z boson and another heavy Higgs boson, H, is performed using a data sample corresponding to an integrated luminosity of 139 fb−1^{-1}−1 from proton–proton collisions at s=13sqrt{s} = 13s ​=13 TeV ext {TeV}TeV recorded by the ATLAS detector at the LHC. The search considers the Z boson decaying into electrons or muons and the H boson into a pair of b-quarks or W bosons. The mass range considered is 230–800 GeV ext {GeV}GeV for the A boson and 130–700 GeV ext {GeV}GeV for the H boson. The data are in good agreement with the background predicted by the Standard Model, and therefore 95% confidence-level upper limits for σ×B(A→ZH)×B(H→bb  or  H→WW)sigma imes B(A ightarrow ZH) imes B(H ightarrow bb, ext {or} , H ightarrow WW)σ×B(A→ZH)×B(H→bborH→WW) are set.
    Permanent Link: http://hdl.handle.net/11104/0325039

     
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