Cover Image

Inclusive and differential cross-sections for dilepton tt[bar] production measured in √s = 13 TeV pp collisions with the ATLAS detector

Show other versions (433)

Differential and double-differential distributions of kinematic variables of leptons from decays of top-quark pairs (tt[bar]) are measured using the full LHC Run 2 data sample collected with the ATLAS detector. The data were collected at a pp collision energy of √s = 13 TeV and correspond to an inte...

Full description

Saved in:
Bibliographic Details
Main Authors: Aad, Georges (Author) , Baltes, Lisa Marie (Author) , Bartels, Falk (Author) , Castillo, Florencia Luciana (Author) , Rio, Fernando del (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) , Stamen, Rainer (Author) , Sothilingam, Varsiha (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: 17 July 2023
In: Journal of high energy physics
Year: 2023, Issue: 7, Pages: 1-78
ISSN:1029-8479
DOI:10.1007/JHEP07(2023)141
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP07(2023)141
Get full text
Author Notes:The ATLAS collaboration*
Description
Summary:Differential and double-differential distributions of kinematic variables of leptons from decays of top-quark pairs (tt[bar]) are measured using the full LHC Run 2 data sample collected with the ATLAS detector. The data were collected at a pp collision energy of √s = 13 TeV and correspond to an integrated luminosity of 140 fb−1. The measurements use events containing an oppositely charged eμ pair and b-tagged jets. The results are compared with predictions from several Monte Carlo generators. While no prediction is found to be consistent with all distributions, a better agreement with measurements of the lepton pT distributions is obtained by reweighting the tt[bar] sample so as to reproduce the top-quark pT distribution from an NNLO calculation. The inclusive top-quark pair production cross-section is measured as well, both in a fiducial region and in the full phase-space. The total inclusive cross-section is found to be σ tt[bar] = 829 +- 1 (stat) +- 13 (syst) +- 8 (lumi) +- 2 (beam) pb, where the uncertainties are due to statistics, systematic effects, the integrated luminosity and the beam energy. This is in excellent agreement with the theoretical expectation.
Item Description:Veröffentlicht: 17. Juli 2023
*The ATLAS collaboration: G. Aad, L.M. Baltes, F. Bartels, F.L. Castillo, M.M. Czurylo, F. Del Rio, S.J. Dittmeier, M. Dunford, 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, S.M. Weber, M. Wessels, L. Vigani, J. Zinsser [und sehr viele weitere Personen]
Im Titel steht der Buchstabe "s" unter dem Wurzelsymbol
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP07(2023)141

Similar Items