0577500 - FZÚ 2024 RIV DE eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 5245 authors
Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at √s ​ = 7 and 8 TeV.
Journal of High Energy Physics. Roč. 2023, č. 7 (2023), č. článku 213. 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, year: 2023 ; AIS: 0.997, rok: 2023
Method of publishing: Open access
DOI: https://doi.org/10.1007/JHEP07(2023)213

A combination of measurements of the inclusive top-quark pair production cross-section performed by ATLAS and CMS in proton–proton collisions at centre-of-mass energies of 7 and 8 TeV at the LHC is presented. The cross-sections are obtained using top-quark pair decays with an opposite-charge electron–muon pair in the final state and with data corresponding to an integrated luminosity of about 5 fb−1−1 at ss ​ = 7 TeV and about 20 fb−1−1 at ss ​ = 8 TeV for each experiment. The combined cross-sections are determined to be 178.5 ± 4.7 pb at ss ​ = 7 TeV and 243.3−5.9+6.0243.3−5.9+6.0​ pb at ss ​ = 8 TeV with a correlation of 0.41, using a reference top-quark mass value of 172.5 GeV. The ratio of the combined cross-sections is determined to be R8/78/7​ = 1.363 ± 0.032. The combined measured cross-sections and their ratio agree well with theory calculations using several parton distribution function (PDF) sets.
Permanent Link: https://hdl.handle.net/11104/0347822