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dc.contributor.authorATLAS Collaboration
dc.date.accessioned2022-08-25T00:52:12Z
dc.date.available2022-08-25T00:52:12Z
dc.date.issued2022
dc.identifier.citationAad, G., Abbott, B., Abbott, D. C., Abed Abud, A., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Abusleme Hoffman, A. C., Acharya, B. S., Achkar, B., Adam, L., Adam Bourdarios, C., Adamczyk, L., Adamek, L., Addepalli, S. V., … The ATLAS collaboration. (2022b). Measurements of differential cross-sections in top-quark pair events with a high transverse momentum top quark and limits on beyond the Standard Model contributions to top-quark pair production with the ATLAS detector at √s = 13 TeV. Journal of High Energy Physics, 2022(6).
dc.identifier.issn1029-8479
dc.identifier.doi10.1007/JHEP06(2022)063
dc.identifier.urihttp://hdl.handle.net/10150/665950
dc.description.abstractCross-section measurements of top-quark pair production where the hadronically decaying top quark has transverse momentum greater than 355 GeV and the other top quark decays into ℓνb are presented using 139 fb−1 of data collected by the ATLAS experiment during proton-proton collisions at the LHC. The fiducial cross-section at s = 13 TeV is measured to be σ = 1.267 ± 0.005 ± 0.053 pb, where the uncertainties reflect the limited number of data events and the systematic uncertainties, giving a total uncertainty of 4.2%. The cross-section is measured differentially as a function of variables characterising the tt¯ system and additional radiation in the events. The results are compared with various Monte Carlo generators, including comparisons where the generators are reweighted to match a parton-level calculation at next-to-next-to-leading order. The reweighting improves the agreement between data and theory. The measured distribution of the top-quark transverse momentum is used to search for new physics in the context of the effective field theory framework. No significant deviation from the Standard Model is observed and limits are set on the Wilson coefficients of the dimension-six operators OtG and Otq(8), where the limits on the latter are the most stringent to date. [Figure not available: see fulltext.]. © 2022, The Author(s).
dc.language.isoen
dc.publisherSpringer Science and Business Media Deutschland GmbH
dc.rightsCopyright © CERN, for the benefit of the ATLAS Collaboration. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0).
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectBeyond Standard Model
dc.subjectHadron-Hadron Scattering
dc.subjectTop Physics
dc.titleMeasurements of differential cross-sections in top-quark pair events with a high transverse momentum top quark and limits on beyond the Standard Model contributions to top-quark pair production with the ATLAS detector at √s = 13 TeV
dc.typeArticle
dc.typetext
dc.contributor.departmentDepartment of Physics, University of Arizona
dc.identifier.journalJournal of High Energy Physics
dc.description.noteOpen access journal
dc.description.collectioninformationThis 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.
dc.eprint.versionFinal published version
dc.source.journaltitleJournal of High Energy Physics
refterms.dateFOA2022-08-25T00:52:12Z


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Copyright © CERN, for the benefit of the ATLAS Collaboration. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0).
Except where otherwise noted, this item's license is described as Copyright © CERN, for the benefit of the ATLAS Collaboration. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0).