Measurements of the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson at √s=13 TeV with the ATLAS detector

0551965 - FZÚ 2022 RIV DE eng J - Článek v odborném periodiku
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 … celkem 2939 autorů
Measurements of the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson at √s=13 TeV with the ATLAS detector.
European Physical Journal C. Roč. 81, č. 8 (2021), č. článku 737. ISSN 1434-6044. E-ISSN 1434-6052
Grant CEP: GA MŠMT(CZ) LTT17018
Výzkumná infrastruktura: CERN-CZ II - 90104
Institucionální podpora: RVO:68378271
Klíčová slova: ATLAS * CERN LHC Coll * differential cross section: measured
Obor OECD: Particles and field physics
Impakt faktor: 4.994, rok: 2021
Způsob publikování: Open access

Measurements of both the inclusive and differential production cross sections of a top-quark-antiquark pair in association with a ZZZ boson (ttˉZt ar{t}ZttˉZ) are presented. The measurements are performed by targeting final states with three or four isolated leptons (electrons or muons) and are based on s=13sqrt{s} = 13s ​=13 TeV proton-proton collision data with an integrated luminosity of 139 fb−1^{-1}−1, recorded from 2015 to 2018 with the ATLAS detector at the CERN Large Hadron Collider. The inclusive cross section is measured to be σttˉZ=0.99±0.05sigma_{t ar{t}Z} = 0.99 pm 0.05σttˉZ​=0.99±0.05 (stat.) ±0.08pm 0.08±0.08 (syst.) pb, in agreement with the most precise theoretical predictions. The differential measurements are presented as a function of a number of kinematic variables which probe the kinematics of the ttˉZt system.
Trvalý link: http://hdl.handle.net/11104/0327168