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Measurements of inclusive and differential fiducial cross-sections of tt production with additional heavy-flavour jets in proton-proton collisions at vs =13 TeV with the ATLAS detector

This paper presents measurements of tt¯tt¯ t\overline{t} production in association with additional b-jets in pp collisions at the LHC at a centre-of-mass energy of 13 TeV. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 36.1 fb−1. Fiducial cross-section m...

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Hauptverfasser: Aaboud, Morad (Verfasst von) , Anders, Christoph (Verfasst von) , Antel, Claire (Verfasst von) , Baas, Alessandra Edda (Verfasst von) , Andrei, George Victor (Verfasst von) , Bolz, Arthur (Verfasst von) , Brandt, Oleg (Verfasst von) , Dunford, Monica (Verfasst von) , Franchino, Silvia (Verfasst von) , Geisler, Manuel Patrice (Verfasst von) , Hanke, Paul (Verfasst von) , Jongmanns, Jan (Verfasst von) , Kolb, Mathis (Verfasst von) , Kugel, Andreas (Verfasst von) , Lisovyi, Mykhailo (Verfasst von) , Napolitano, Fabrizio (Verfasst von) , Narrias Villar, Daniel Isaac (Verfasst von) , Schöning, André (Verfasst von) , Schultz-Coulon, Hans-Christian (Verfasst von) , Stamen, Rainer (Verfasst von) , Starovoitov, Pavel (Verfasst von) , Suchek, Stanislav (Verfasst von) , Wang, Jike (Verfasst von) , Weber, Sebastian (Verfasst von) , Wessels, Martin (Verfasst von) , Yue, Xiaoguang (Verfasst von)
Körperschaft: ATLAS Collaboration (Verfasst von)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: April 4, 2019
In: Journal of high energy physics
Year: 2019, Heft: 4, Pages: 1-66
ISSN:1029-8479
DOI:10.1007/JHEP04(2019)046
Online-Zugang:Verlag, Volltext: https://doi.org/10.1007/JHEP04(2019)046
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Verfasserangaben:the ATLAS collaboration
Beschreibung
Zusammenfassung:This paper presents measurements of tt¯tt¯ t\overline{t} production in association with additional b-jets in pp collisions at the LHC at a centre-of-mass energy of 13 TeV. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 36.1 fb−1. Fiducial cross-section measurements are performed in the dilepton and lepton-plus-jets tt¯tt¯ t\overline{t} decay channels. Results are presented at particle level in the form of inclusive cross-sections of tt¯tt¯ t\overline{t} final states with three and four b-jets as well as differential cross-sections as a function of global event properties and properties of b-jet pairs. The measured inclusive fiducial cross-sections generally exceed the tt¯bb¯¯tt¯bb¯ t\overline{t}b\overline{b} predictions from various next-to-leading-order matrix element calculations matched to a parton shower but are compatible within the total uncertainties. The experimental uncertainties are smaller than the uncertainties in the predictions. Comparisons of state-of-the-art theoretical predictions with the differential measurements are shown and good agreement with data is found for most of them. Open image in new window
Beschreibung:The ATLAS collaboration: M. Aaboud, C.F. Anders, V. Andrei, C. Antel, A.E. Baas, A.E. Bolz, O. Brandt, M. Dunford, S. Franchino, M.P. Geisler, P. Hanke, J. Jongmanns, M. Kolb, A. Kugel, M. Lisovyi, H. F. Napolitano, D.I. Narrias Villar, A. Schoening, R. Stamen, P. Starovoitov, S. Suchek, J. Wang, S.M. Weber, M. Wessels, X. Yue [und weitere]
Gesehen am 26.06.2019
Beschreibung:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP04(2019)046

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