@misc{10481/84239,
year = {2023},
month = {8},
url = {https://hdl.handle.net/10481/84239},
abstract = {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.},
organization = {CERN},
organization = {MICINN, Spain},
organization = {COST},
organization = {ERC},
organization = {ERDF},
organization = {Horizon 2020, Marie Skłodowska-Curie Actions},
organization = {European Union},
organization = {EU-ESF},
organization = {La Caixa Banking Foundation, CERCA Programme Generalitat de Catalunya},
organization = {PROMETEO},
organization = {GenT Programmes Generalitat Valenciana, Spain},
organization = {PIC, Spain},
publisher = {Elsevier},
title = {Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment},
doi = {10.1016/j.physletb.2023.137848},
author = {Atlas Collaboration and Aad, G. and Rodríguez Chala, Mikael and Aguilar Saavedra, Juan Antonio},
}