Measurement of the tt¯ production cross-section in pp collisions at √s = 5.02 TeV with the ATLAS detector

0577422 - 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 2913 authors
Measurement of the tt¯ production cross-section in pp collisions at √s = 5.02 TeV with the ATLAS detector.
Journal of High Energy Physics. Roč. 2023, č. 6 (2023), č. článku 138. ISSN 1029-8479. E-ISSN 1029-8479
Research Infrastructure: CERN-CZ III - 90240
Institutional support: RVO:68378271
Keywords : Hadron-Hadron Scattering * Top physics * pp: colliding beams
OECD category: Particles and field physics
Impact factor: 5.4, year: 2022
Method of publishing: Open access

The inclusive top-quark pair (tt‾tt) production cross-section σtt‾σtt​ is measured in proton–proton collisions at a centre-of-mass energy √s ​= 5.02 TeV, using 257 pb−1−1 of data collected in 2017 by the ATLAS experiment at the LHC. The tt‾tt cross-section is measured in both the dilepton and single-lepton final states of the tt‾tt system and then combined. The combination of the two measurements yieldsσtt‾=67.5±0.9(stat.)±2.3(syst.)±1.1(lumi.)±0.2(beam)pb,σtt​=67.5±0.9(stat.)±2.3(syst.)±1.1(lumi.)±0.2(beam)pb,where the four uncertainties reflect the limited size of the data sample, experimental and theoretical systematic effects, and imperfect knowledge of both the integrated luminosity and the LHC beam energy, giving a total uncertainty of 3.9%.
Permanent Link: https://hdl.handle.net/11104/0346574