@Article{ATLASCollaborationAad_etal2023, author="ATLAS Collaboration (Aad, G. et al and Amos, K. R. and Aparisi Pozo, J. A. and Bailey, A. J. and Bouchhar, N. and Cabrera Urban, S. and Cantero, J. and Cardillo, F. and Castillo Gimenez, V. and Chitishvili, M. and Costa, M. J. and Didenko, M. and Escobar, C. and Fiorini, L. and Fullana Torregrosa, E. and Fuster, J. and Garcia, C. and Garcia Navarro, J. E. and Gomez Delegido, A. J. and Gonzalez de la Hoz, S. and Gonzalvo Rodriguez, G. R. and Guerrero Rojas, J. G. R. and Higon-Rodriguez, E. and Lacasta, C. and Lozano Bahilo, J. J. and Marti-Garcia, S. and Martinez Agullo, P. and Miralles Lopez, M. and Mitsou, V. A. and Monsonis Romero, L. and Moreno Llacer, M. and Munoz Perez, D. and Navarro-Gonzalez, J. and Poveda, J. and Prades Iba{\~{n}}ez, A. and Rubio Jimenez, A. and Ruiz-Martinez, A. and Sabatini, P. and Salt, J. and Sanchez Sebastian, V. and Sayago Galvan, I. and Senthilkumar, V. and Soldevila, U. and Sanchez, J. and Torro Pastor, E. and Valero, A. and Valls Ferrer, J. A. and Varriale, L. and Villaplana Perez, M. and Vos, M.", title="Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment", journal="Physics Letters B", year="2023", volume="843", pages="137848--21pp", abstract="A measurement of the charge asymmetry in top-quark pair (tt{\textasciimacron}) production in association with a photon is presented. The measurement is performed in the single-lepton tt{\textasciimacron} 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{\textpm}0.029 in agreement with the Standard Model expectation.", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=6099), last updated on Tue, 30 Apr 2024 07:25:25 +0000", doi="10.1016/j.physletb.2023.137848", opturl="https://arxiv.org/abs/2212.10552", opturl="https://doi.org/10.1016/j.physletb.2023.137848" }