0577657 - FZÚ 2024 RIV NL eng J - Článek v odborném periodiku
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 … celkem 2934 autorů
Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment.
Physics Letters. B. Roč. 843, Aug (2023), č. článku 137848. ISSN 0370-2693. E-ISSN 1873-2445
Výzkumná infrastruktura: CERN-CZ III - 90240
Institucionální podpora: RVO:68378271
Klíčová slova: ATLAS * CERN Lab * photon: associated production * final state: ((n)jet lepton)
Obor OECD: Particles and field physics
Impakt faktor: 4.3, rok: 2023 ; AIS: 1.232, rok: 2023
Způsob publikování: Open access
DOI: https://doi.org/10.1016/j.physletb.2023.137848

A measurement of the charge asymmetry in top-quark pair (tt¯) production in association with a photon is presented. The measurement is performed in the single-lepton tt¯ decay channel using proton–proton collision data collected with the ATLAS detector at the Large Hadron Collider at CERN at a centre-of-mass-energy of 13 TeV during the years 2015–2018, corresponding to an integrated luminosity of 139 fb−1. The charge asymmetry is obtained from the distribution of the difference of the absolute rapidities of the top quark and antiquark using a profile likelihood unfolding approach. It is measured to be AC=−0.003±0.029 in agreement with the Standard Model expectation.
Trvalý link: https://hdl.handle.net/11104/0346790