0619084 - FZÚ 2026 RIV DE eng J - Journal Article
Aad, G. - Aakvaag, E. - Abbott, B. - Chudoba, Jiří - Federičová, Pavla - Hejbal, Jiří - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Nechanský, Filip - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2887 authors
Measurement of the associated production of a top-antitop-quark pair and a Higgs boson decaying into a bb^- pair in pp collisions at √s=13 TeV using the ATLAS detector at the LHC.
European Physical Journal C. Roč. 85, Feb (2025), č. článku 210. ISSN 1434-6044. E-ISSN 1434-6052
R&D Projects: GA MŠMT(CZ) EH22_008/0004632
Research Infrastructure: CERN-CZ III - 90240
Institutional support: RVO:68378271
Keywords : ATLAS * CERN * Higgs boson * proton–proton collision
OECD category: Particles and field physics
Impact factor: 4.2, year: 2023 ; AIS: 1.119, rok: 2023
Method of publishing: Open access
DOI: https://doi.org/10.1140/epjc/s10052-025-13740-x

This paper reports the measurement of Higgs boson production in association with a ttˉ pair in the H→bbˉ decay channel. The analysis uses 140 fb−1 of 13 TeV proton–proton collision data collected with the ATLAS detector at the Large Hadron Collider. The final states with one or two electrons or muons are employed. An excess of events over the expected background is found with an observed (expected) significance of 4.6 (5.4) standard deviations. The ttˉH cross-section is σttˉH=411 −92+101 fb = 411±54(stat.) −75+85(syst.) fb for a Higgs boson mass of 125.09 GeV, consistent with the prediction of the Standard Model of 507−50+35 fb. The cross-section is also measured differentially in bins of the Higgs boson transverse momentum within the simplified template cross-section framework.
Permanent Link: https://hdl.handle.net/11104/0366172