Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/132382
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Measurements of the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson at √s = 13 TeV with the ATLAS detector
Other Titles: Measurements of the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson at root s = 13 TeV with the ATLAS detector
Author: Aad, G.
Abbott, B.
Abbott, D.C.
Abud, A.A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Achkar, B.
Adam, L.
Bourdarios, C.A.
Adamczyk, L.
Adamek, L.
Adelman, J.
Adiguzel, A.
et al.
Citation: European Physical Journal C: Particles and Fields, 2021; 81(8):737-1-737-43
Publisher: Springer Nature
Issue Date: 2021
ISSN: 1434-6044
1434-6052
Statement of
Responsibility: 
G. Aad … D. Duvnjak … P. Jackson … A.X.Y. Kong … J.L. Oliver … H. Potti … A.S. Sharma … M.J. White … et al. [The ATLAS Collaboration]
Abstract: Measurements of both the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson (tt¯Z) are presented. The measurements are performed by targeting final states with three or four isolated leptons (electrons or muons) and are based on s√=13 TeV proton–proton collision data with an integrated luminosity of 139 fb⁻¹, recorded from 2015 to 2018 with the ATLAS detector at the CERN Large Hadron Collider. The inclusive cross section is measured to be σtt¯Z=0.99±0.05 (stat.) ±0.08 (syst.) pb, in agreement with the most precise theoretical predictions. The differential measurements are presented as a function of a number of kinematic variables which probe the kinematics of the tt¯Z system. Both absolute and normalised differential cross-section measurements are performed at particle and parton levels for specific fiducial volumes and are compared with theoretical predictions at different levels of precision, based on a χ2/ndf and p value computation. Overall, good agreement is observed between the unfolded data and the predictions.
Rights: © CERN for the benefit of ATLAS Collaboration 2021. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. Funded by SCOAP³.
DOI: 10.1140/epjc/s10052-021-09439-4
Grant ID: ARC
Published version: http://dx.doi.org/10.1140/epjc/s10052-021-09439-4
Appears in Collections:Physics publications

Files in This Item:
File Description SizeFormat 
hdl_132382.pdfPublished Version4.73 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.