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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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Main Authors: Aaboud, Morad (Author) , Anders, Christoph (Author) , Antel, Claire (Author) , Baas, Alessandra Edda (Author) , Andrei, George Victor (Author) , Bolz, Arthur (Author) , Brandt, Oleg (Author) , Dunford, Monica (Author) , Franchino, Silvia (Author) , Geisler, Manuel Patrice (Author) , Hanke, Paul (Author) , Jongmanns, Jan (Author) , Kolb, Mathis (Author) , Kugel, Andreas (Author) , Lisovyi, Mykhailo (Author) , Napolitano, Fabrizio (Author) , Narrias Villar, Daniel Isaac (Author) , Schöning, André (Author) , Schultz-Coulon, Hans-Christian (Author) , Stamen, Rainer (Author) , Starovoitov, Pavel (Author) , Suchek, Stanislav (Author) , Wang, Jike (Author) , Weber, Sebastian (Author) , Wessels, Martin (Author) , Yue, Xiaoguang (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: April 4, 2019
In: Journal of high energy physics
Year: 2019, Issue: 4, Pages: 1-66
ISSN:1029-8479
DOI:10.1007/JHEP04(2019)046
Online Access:Verlag, Volltext: https://doi.org/10.1007/JHEP04(2019)046
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Author Notes:the ATLAS collaboration
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Summary: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
Item Description: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
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP04(2019)046

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