Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment
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 centr...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
10 August 2023
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| In: |
Physics letters
Year: 2023, Jahrgang: 843, Pages: 1-21 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2023.137848 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.physletb.2023.137848 Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S037026932300182X 
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| Verfasserangaben: | The ATLAS collaboration* |
MARC
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| 245 | 1 | 0 | |a Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment |c The ATLAS collaboration* |
| 264 | 1 | |c 10 August 2023 | |
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| 500 | |a *The ATLAS Collaboration: G. Aad, L.M. Baltes, F. Bartels, F.L. Castillo, M.M. Czurylo, M. Dunford, S. Franchino, M. Klassen, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, S. Rodriguez Bosca, C. Sauer, A. Schoening, H-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, J. Zinsser [und 2912 weitere Personen] | ||
| 520 | |a 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. | ||
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