Search for heavy resonances decaying into a Z or W boson and a Higgs boson in final states with leptons and b-jets in 139 fb.sup.−1./sup. of pp collisions at √s = 13 TeV with the ATLAS detector

0577436 - FZÚ 2024 RIV DE 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 2923 authors
Search for heavy resonances decaying into a Z or W boson and a Higgs boson in final states with leptons and b-jets in 139 fb⁻¹ of pp collisions at √s = 13 TeV with the ATLAS detector.
Journal of High Energy Physics. Roč. 2023, č. 6 (2023), č. článku 016. ISSN 1029-8479. E-ISSN 1029-8479
Research Infrastructure: CERN-CZ III - 90240
Institutional support: RVO:68378271
Keywords : ATLAS * boson: scalar * model: triplet * mass spectrum: transverse
OECD category: Particles and field physics
Impact factor: 5.4, year: 2022
Method of publishing: Open access

This article presents a search for new resonances decaying into a Z or W boson and a 125 GeV Higgs boson h, and it targets the νν‾bb‾ννbb, ℓ+ℓ−bb‾ℓ+ℓ−bb, or ℓ±νbb‾ℓ±νbb final states, where ℓ = e or μ, in proton-proton collisions at ss ​ = 13 TeV. The data used correspond to a total integrated luminosity of 139 fb−1−1 collected by the ATLAS detector during Run 2 of the LHC at CERN. The search is conducted by examining the reconstructed invariant or transverse mass distributions of Zh or Wh candidates for evidence of a localised excess in the mass range from 220 GeV to 5 TeV. No significant excess is observed and 95% confidence-level upper limits between 1.3 pb and 0.3 fb are placed on the production cross section times branching fraction of neutral and charged spin-1 resonances and CP-odd scalar bosons. These limits are converted into constraints on the parameter space of the Heavy Vector Triplet model and the two-Higgs-doublet model.
Permanent Link: https://hdl.handle.net/11104/0346576