Searches for exclusive Higgs and Z boson decays into a vector quarkonium state and a photon using 139 fb.sup.-1./sup. of ATLAS √s=13 TeV proton–proton collision data

0577297 - 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 2919 authors
Searches for exclusive Higgs and Z boson decays into a vector quarkonium state and a photon using 139 fb^-1 of ATLAS √s=13 TeV proton–proton collision data.
European Physical Journal C. Roč. 83, č. 9 (2023), č. článku 781. ISSN 1434-6044. E-ISSN 1434-6052
Research Infrastructure: CERN-CZ III - 90240
Institutional support: RVO:68378271
Keywords : Higgs particle: radiative decay * quarkonium * photon * ATLAS
OECD category: Particles and field physics
Impact factor: 4.4, year: 2022
Method of publishing: Open access

Searches for the exclusive decays of Higgs and Z bosons into a vector quarkonium state and a photon are performed in the μ+μ− γμ+μ−γ final state with a proton–proton collision data sample corresponding to an integrated luminosity of 139 fb−1−1 collected at s=13s ​=13 TeV with the ATLAS detector at the CERN Large Hadron Collider. The observed data are compatible with the expected backgrounds. The 95% confidence-level upper limits on the branching fractions of the Higgs boson decays into J/ψ γJ/ψγ, ψ(2S) γψ(2S)γ, and Υ(1S,2S,3S) γΥ(1S,2S,3S)γ are found to be 2.0×10−42.0×10−4, 10.5×10−410.5×10−4, and (2.5,4.2,3.4)×10−4(2.5,4.2,3.4)×10−4, respectively, assuming Standard Model production of the Higgs boson.
Permanent Link: https://hdl.handle.net/11104/0346515