0562946 - FZÚ 2023 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 2914 autorů
Measurement of the energy asymmetry in tt¯ j production at 13 TeV with the ATLAS experiment and interpretation in the SMEFT framework.
European Physical Journal C. Roč. 82, č. 4 (2022), č. článku 374. ISSN 1434-6044. E-ISSN 1434-6052
Výzkumná infrastruktura: CERN-CZ II - 90104; e-INFRA CZ - 90140
Institucionální podpora: RVO:68378271
Klíčová slova: energy: high * perturbation theory: higher-order * higher-order: 1
Obor OECD: Particles and field physics
Impakt faktor: 4.4, rok: 2022
Způsob publikování: Open access

A measurement of the energy asymmetry in jet-associated top-quark pair production is presented using 139 fb−1139fb−1 of data collected by the ATLAS detector at the Large Hadron Collider during pp collisions at s=13 TeVs ​=13TeV. The observable measures the different probability of top and antitop quarks to have the higher energy as a function of the jet scattering angle with respect to the beam axis. The energy asymmetry is measured in the semileptonic ttˉttˉ decay channel, and the hadronically decaying top quark must have transverse momentum above 350 GeV350GeV. The results are corrected for detector effects to particle level in three bins of the scattering angle of the associated jet. The measurement agrees with the SM prediction at next-to-leading-order accuracy in quantum chromodynamics in all three bins.
Trvalý link: https://hdl.handle.net/11104/0337242