0618695 - FZÚ 2026 RIV US 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 2934 authors
Combination of searches for singly produced vectorlike top quarks in 𝑝⁢𝑝 collisions at √𝑠 =13  TeV with the ATLAS detector.
Physical Review D. Roč. 111, č. 1 (2025), č. článku 012012. ISSN 2470-0010. E-ISSN 2470-0029
R&D Projects: GA MŠMT(CZ) EH22_008/0004632
Research Infrastructure: CERN-CZ III - 90240
Institutional support: RVO:68378271
Keywords : quarks * ATLAS detector * Standard Model Higgs boson
OECD category: Particles and field physics
Impact factor: 4.6, year: 2023 ; AIS: 1.057, rok: 2023
Method of publishing: Open access
DOI: https://doi.org/10.1103/PhysRevD.111.012012

A combination of searches for the single production of vectorlike top quarks (T) is presented. These analyses are based on proton-proton collisions at s=13TeV recorded in 2015–2018 with the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 139 fb-1. The T decay modes considered in this combination are into a top quark and either a Standard Model Higgs boson or a Z boson (T→Ht and T→Zt). The individual searches used in the combination are differentiated by the number of leptons (e ,μ ) in the final state. The observed data are found to be in good agreement with the Standard Model background prediction. Interpretations are provided for a range of masses and couplings of the vectorlike top quark for benchmark models and generalized representations in terms of 95% confidence level limits. For a benchmark signal prediction of a vectorlike top quark SU(2) singlet with electroweak coupling, κ, of 0.5, masses below 2.1 TeV are excluded, resulting in the most restrictive limits to date.
Permanent Link: https://hdl.handle.net/11104/0365524