Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/133705
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dc.contributor.author | Aad, G. | - |
dc.contributor.author | Abbott, B. | - |
dc.contributor.author | Abbott, D.C. | - |
dc.contributor.author | Abed Abud, A. | - |
dc.contributor.author | Abeling, K. | - |
dc.contributor.author | Abhayasinghe, D.K. | - |
dc.contributor.author | Abidi, S.H. | - |
dc.contributor.author | Abramowicz, H. | - |
dc.contributor.author | Abreu, H. | - |
dc.contributor.author | Abulaiti, Y. | - |
dc.contributor.author | Abusleme Hoffman, A.C. | - |
dc.contributor.author | Acharya, B.S. | - |
dc.contributor.author | Achkar, B. | - |
dc.contributor.author | Adam, L. | - |
dc.contributor.author | Adam Bourdarios, C. | - |
dc.contributor.author | Adamczyk, L. | - |
dc.contributor.author | Adamek, L. | - |
dc.contributor.author | Adelman, J. | - |
dc.contributor.author | Adiguzel, A. | - |
dc.contributor.author | Adorni, S. | - |
dc.contributor.author | et al. | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | The Journal of High Energy Physics, 2021; 2021(11):118-1-118-53 | - |
dc.identifier.issn | 1029-8479 | - |
dc.identifier.issn | 1029-8479 | - |
dc.identifier.uri | https://hdl.handle.net/2440/133705 | - |
dc.description.abstract | A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the Large Hadron Collider corresponding to an integrated luminosity of 139 fb−1 is presented. Events are selected if they contain a single lepton (electron or muon) or an opposite-sign lepton pair, in association with multiple jets. The events are categorised according to the number of jets and how likely these are to contain b-hadrons. A multivariate technique is then used to discriminate between signal and background events. The measured four-top-quark production cross section is found to be 26+17 −15 fb, with a corresponding observed (expected) significance of 1.9 (1.0) standard deviations over the background-only hypothesis. The result is combined with the previous measurement performed by the ATLAS Collaboration in the multilepton final state. The combined four-top-quark production cross section is measured to be 24+7 −6 fb, with a corresponding observed (expected) signal significance of 4.7 (2.6) standard deviations over the background-only predictions. It is consistent within 2.0 standard deviations with the Standard Model expectation of 12.0 ± 2.4 fb. | - |
dc.description.statementofresponsibility | The Atlas Collaboration ... Paul D. Jackson ... Albert X. Kong ... Harish Potti ... Tristan A. Ruggeri ... Martin White ... et al. | - |
dc.language.iso | en | - |
dc.publisher | Springer Nature | - |
dc.rights | © 2021, The Author(s) This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. | - |
dc.source.uri | http://dx.doi.org/10.1007/jhep11(2021)118 | - |
dc.subject | Hadron-Hadron scattering (experiments); Top physics | - |
dc.title | Measurement of the t t¯ t t¯ production cross section in pp collisions at √s = 13 TeV with the ATLAS detector | - |
dc.title.alternative | Measurement of the t t -bar t t -bar production cross section in pp collisions at root s = 13 TeV with the ATLAS detector | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1007/JHEP11(2021)118 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Jackson, P. [0000-0002-0847-402X] | - |
dc.identifier.orcid | Kong, A. [0000-0001-8063-8765] | - |
dc.identifier.orcid | Potti, H. [0000-0002-0800-9902] | - |
dc.identifier.orcid | Ruggeri, T. [0000-0001-9941-1966] | - |
dc.identifier.orcid | White, M. [0000-0001-5474-4580] | - |
Appears in Collections: | Physics publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_133705.pdf | Published version | 2.28 MB | Adobe PDF | View/Open |
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