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Measurement of the total and differential cross-sections of tt[bar]W production in pp collisions at √s= 13 TeV with the ATLAS detector

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Measurements of inclusive and differential production cross-sections of a top-quark-top-antiquark pair in association with a W boson (tt[bar]W) are presented. They are performed by targeting final states with two same-sign or three isolated leptons (electrons or muons) and are based on √s= 13 TeV pr...

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Main Authors: Aad, Georges (Author) , Baltes, Lisa Marie (Author) , Bartels, Falk (Author) , Czurylo, Marta (Author) , Dittmeier, Sebastian (Author) , Dunford, Monica (Author) , Franchino, Silvia (Author) , Junkermann, Thomas (Author) , Klassen, Martin (Author) , Mkrtchyan, Tigran (Author) , Ott, Philipp (Author) , Rassloff, Damir Fabrice (Author) , Rodriguez Bosca, Sergi (Author) , Sauer, Christof (Author) , Schöning, André (Author) , Schultz-Coulon, Hans-Christian (Author) , Sothilingam, Varsiha (Author) , Stamen, Rainer (Author) , Starovoitov, Pavel (Author) , Vigani, Luigi (Author) , Weber, Sebastian (Author) , Wessels, Martin (Author) , Zinßer, Joachim (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 2024
In: Journal of high energy physics
Year: 2024, Issue: 5, Pages: 1-75
ISSN:1029-8479
DOI:10.1007/JHEP05(2024)131
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP05(2024)131
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Author Notes:the ATLAS collaboration*
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Summary:Measurements of inclusive and differential production cross-sections of a top-quark-top-antiquark pair in association with a W boson (tt[bar]W) are presented. They are performed by targeting final states with two same-sign or three isolated leptons (electrons or muons) and are based on √s= 13 TeV proton-proton collision data with an integrated luminosity of 140 fb−1, recorded from 2015 to 2018 with the ATLAS detector at the Large Hadron Collider. The inclusive tt[bar]W production cross-section is measured to be 880 ± 80 fb, compared to a reference theoretical prediction of 745 ± 50 (scale) ± 13 (2-loop approx.) ± 19 (PDF, αs) fb. Differential cross-section measurements characterise this process in detail for the first time. Several particle-level observables are compared with a variety of theoretical predictions, which generally agree well with the normalised differential cross-section results. Additionally, the relative charge asymmetry of tt[bar]W+ and tt[bar]W- is measured inclusively to be ACrel = 0.33 ± 0.05, in very good agreement with the theoretical prediction of 0.322 ± 0.003 (scale) ± 0.007 (PDF), as well as differentially.
Item Description:Veröffentlicht: 10. Mai 2024
*The ATLAS collaboration: G. Aad, L.M. Baltes, F. Bartels, M.M. Czurylo, M. Dunford, S.J. Dittmeier, S. Franchino, T. Junkermann, 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 sehr viele weitere Personen]
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Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP05(2024)131

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