{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.140834.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2616326"}},{"@id":"https://doi.org/10.1016/j.physletb.2023.137848","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2024","description":"CERN-LHC-ATLAS.  A measurement of the charge asymmetry in top-quark pair ($t\\bar{t}$) production in association with a photon is presented. The measurement is performed in the single-lepton $t\\bar{t}$ 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 $A_{C} = -0.003 \\pm 0.029$ in agreement with the Standard Model expectation.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.140834.v1/t1","@type":"Dataset","description":"The measured asymmetry of top quark pairs in $t\\bar{t}\\gamma$ production in a fiducial region at particle level.","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.140834.v1/t2","@type":"Dataset","description":"Normalised differential cross section as a function of $|y(t)| - |y(\\bar{t})|$. The observed data is compared with the SM expectation...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.140834.v1/t3","@type":"Dataset","description":"Definition of the fiducial phase space at particle level. where, $\\gamma$: photon $\\ell$: lepton j: jet","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.140834.v1/t4","@type":"Dataset","description":"Correlation matrix of all the parameters including nuisance parameters used in the profile likelihood unfolding fit on $A_{C}$.","name":"Table 4"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2616326?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/140834"}],"inLanguage":"en","name":"Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins2616326?version=1","version":1}