Inclusive and differential cross-sections for dilepton tt¯ production measured in √s = 13 TeV pp collisions with the ATLAS detector
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ATLAS CollaborationAffiliation
Department of Physics, University of ArizonaIssue Date
2023-07-17
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The ATLAS collaboration., Aad, G., Abbott, B. et al. Inclusive and differential cross-sections for dilepton tt¯ production measured in √s = 13 TeV pp collisions with the ATLAS detector. J. High Energ. Phys. 2023, 141 (2023). https://doi.org/10.1007/JHEP07(2023)141.Journal
Journal of High Energy PhysicsRights
Copyright CERN, for the benefit of the ATLAS Collaboration. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0).Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Differential and double-differential distributions of kinematic variables of leptons from decays of top-quark pairs (tt¯) 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 p T distributions is obtained by reweighting the tt¯ sample so as to reproduce the top-quark p T 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 σtt¯=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. [Figure not available: see fulltext.] © 2023, The Author(s).Note
Open access journalISSN
1029-8479Version
Final Published Versionae974a485f413a2113503eed53cd6c53
10.1007/JHEP07(2023)141
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Except where otherwise noted, this item's license is described as Copyright CERN, for the benefit of the ATLAS Collaboration. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0).