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Статья

Aad, G.
Measurement of the Charge Asymmetry in Top-Quark Pair Production in Association with a Photon with the ATLAS Experiment / G.Aad, F.Ahmadov, I.N.Aleksandrov, V.A.Bednyakov, I.R.Boyko, I.A.Budagov, G.A.Chelkov, A.Cheplakov, M.V.Chizhov, D.V.Dedovich, M.Demichev, A.Gongadze, M.I.Gostkin, N.Huseynov, S.N.Karpov, Z.M.Karpova, U.Kruchonak, V.Kukhtin, Y.Kulchitsky, E.Ladygin, V.Lyubushkin, T.Lyubushkina, S.Malyukov, M.Mineev, E.Plotnikova, I.N.Potrap, N.A.Rusakovich, M.Shiyakova, A.Soloshenko, T.Turtuvshin, S.Turchikhin, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, [ATLAS Collab.] // Physics Letters B [Electronic resource]. – 2023. – Vol.843. – P.137848. – URL: https://doi.org/10.1016/j.physletb.2023.137848. – Bibliogr.:92.

A measurement of the charge asymmetry in top-quark pair ( ) production in association with a photon is presented. The measurement is performed in the single-lepton 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 in agreement with the Standard Model expectation



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 346.6д1 - Чармоний, боттомоний, топ-кварк. Очарованные частицы и др. резонансы из тяжелых кварков