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 root s=13 TeV

dc.authoridAndrew John Beddall / 0000-0002-8451-9672en_US
dc.authoridSerkant Ali Çetin / 0000-0001-5050-8441en_US
dc.authoridSertaç Öztürk / 0000-0001-6533-6144en_US
dc.authoridSinem Şimşek / 0000-0002-9650-3846en_US
dc.authorscopusidAndrew John Beddall / 57215802986
dc.authorscopusidSerkant Ali Çetin / 34567544400
dc.authorscopusidSertaç Öztürk / 56421488400
dc.authorwosidAndrew John Beddall / AAE-5820-2022en_US
dc.authorwosidSerkant Ali Çetin / AGF-0147-2022en_US
dc.authorwosidSertaç Öztürk / AGO-2476-2022en_US
dc.authorwosidSinem Şimşek / AGG-2640-2022en_US
dc.contributor.authorAad, G.
dc.contributor.authorBeddall, Andrew John
dc.contributor.authorÇetin, Serkant Ali
dc.contributor.authorÖztürk, Sertaç
dc.contributor.authorŞimşek, Sinem
dc.date.accessioned2022-07-07T13:32:38Z
dc.date.available2022-07-07T13:32:38Z
dc.date.issued2022en_US
dc.departmentİstinye Üniversitesien_US
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 l nu b 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 root s = 13 TeV is measured to be sigma = 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 t (t) over bar 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 O-tG and O-tq((8)), where the limits on the latter are the most stringent to date.en_US
dc.identifier.citationAad, G., Beddall, A. J., Cetin, S. A., Ozturk, S., Simsek, S. (2022). 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 root s=13 TeV. Journal of High Energy Physics, (6).en_US
dc.identifier.doi10.1007/JHEP06(2022)063en_US
dc.identifier.issn1029-8479en_US
dc.identifier.issue6en_US
dc.identifier.scopus2-s2.0-85134054236en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1007/JHEP06(2022)063
dc.identifier.urihttps://hdl.handle.net/20.500.12713/2999
dc.identifier.wosWOS:000811749600001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorBeddall, Andrew John
dc.institutionauthorÇetin, Serkant Ali
dc.institutionauthorÖztürk, Sertaç
dc.institutionauthorŞimşek, Sinem
dc.language.isoenen_US
dc.publisherSPRINGERen_US
dc.relation.ispartofJOURNAL OF HIGH ENERGY PHYSICSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectTop Physicsen_US
dc.subjectBeyond Standard Modelen_US
dc.subjectHadron-Hadron Scatteringen_US
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 root s=13 TeVen_US
dc.typeArticleen_US

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