Measurement of the inclusive t¯t production cross section in the lepton + jets channel in pp collisions at √s = 7 TeV with the ATLAS detector using support vector machines

0576434 - FZÚ 2024 RIV US eng J - Článek v odborném periodiku
Aaboud, M. - Aad, G. - Abbott, B. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Jakoubek, Tomáš - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … celkem 2929 autorů
Measurement of the inclusive t¯t production cross section in the lepton + jets channel in pp collisions at √s = 7 TeV with the ATLAS detector using support vector machines.
Physical Review D. Roč. 108, Aug (2023), č. článku 032014. ISSN 2470-0010. E-ISSN 2470-0029
Výzkumná infrastruktura: CERN-CZ III - 90240
Institucionální podpora: RVO:68378271
Klíčová slova: p p: scattering * final state: ((n)jet lepton) * ATLAS * TeV
Obor OECD: Particles and field physics
Impakt faktor: 5, rok: 2022
Způsob publikování: Open access

A measurement of the top quark pair-production cross section in the lepton+jets decay channel is presented. It is based on 4.6  fb-1 of s=7  TeV pp collision data collected during 2011 by the ATLAS experiment at the CERN Large Hadron Collider. A three-class, multidimensional event classifier based on support vector machines is used to differentiate tt¯ events from backgrounds. The tt¯ production cross section is found to be σtt¯=168.5±0.7(stat) -5.9+6.2(syst) -3.2+3.4(lumi)  pb. The result is consistent with the Standard Model prediction based on QCD calculations at next-to-next-to-leading order.
Trvalý link: https://hdl.handle.net/11104/0345975