Measurement of the tt¯ cross section and its ratio to the Z production cross section using pp collisions at s=13.6 TeV with the ATLAS detector

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dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D.C.
dc.contributor.authorAbdinov, O.
dc.contributor.authorAbud, A. Abed
dc.contributor.authorAbeling, K.
dc.contributor.authorQuiles, A. Irles
dc.date.accessioned2026-04-04T18:48:32Z
dc.date.available2026-04-04T18:48:32Z
dc.date.issued2024
dc.description.abstractThe inclusive top-quark-pair production cross section ?tt¯ and its ratio to the Z-boson production cross section have been measured in proton–proton collisions at s=13.6 TeV, using 29 fb?1 of data collected in 2022 with the ATLAS experiment at the Large Hadron Collider. Using events with an opposite-charge electron-muon pair and b-tagged jets, and assuming Standard Model decays, the top-quark-pair production cross section is measured to be ?tt¯=850±3(stat.)±18(syst.)±20(lumi.) pb. The ratio of the tt¯ and the Z-boson production cross sections is also measured, where the Z-boson contribution is determined for inclusive e+e? and ?+?? events in a fiducial phase space. The relative uncertainty on the ratio is reduced compared to the tt¯ cross section, thanks to the cancellation of several systematic uncertainties. The result for the ratio, Rtt¯/Z=1.145±0.003(stat.)±0.021(syst.)±0.002(lumi.) is consistent with the Standard Model prediction using the PDF4LHC21 PDF set. © 2023 The Author(s)
dc.description.sponsorshipBSF-NSF; Agence Nationale de la Recherche, ANR; Australian Research Council, ARC; La Caixa Banking Foundation; Centre National pour la Recherche Scientifique et Technique, CNRST; Fundação para a Ciência e a Tecnologia, FCT; National Stroke Foundation, NSF; Narodowe Centrum Nauki, NCN; CEA-DRF; Horizon 2020, ICSC-NextGenerationEU; ; H2020 Marie Sk?odowska-Curie Actions, MSCA; Japan Society for the Promotion of Science, JSPS; INFN-CNAF; Nederlandse Organisatie voor Wetenschappelijk Onderzoek, NWO; Ministerio de Ciencia e Innovación, MICINN; Israel Science Foundation, ISF; Wallenberg Foundation; Leverhulme Trust; PROMETEO; Staatssekretariat für Bildung, Forschung und Innovation, SBFI; Javna Agencija za Raziskovalno Dejavnost RS, ARRS; Generalitat de Catalunya; Instituto Nazionale di Fisica Nucleare, INFN; Bundesministerium für Wissenschaft, Forschung und Wirtschaft, BMWFW; Austrian Science Fund, FWF; Narodowa Agencja Wymiany Akademickiej, NAWA; Alabama Space Grant Consortium, ASGC; GenT Programmes Generalitat Valenciana , Spain; Agencia Nacional de Investigación y Desarrollo, ANID; Bundesministerium für Bildung und Forschung, BMBF; Canada Foundation for Innovation, CFI; Helmholtz-Gemeinschaft, HGF; Danmarks Grundforskningsfond, DNRF; Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq; Karlsruhe Institute of Technology, KIT; GridKA; Göran Gustafssons Stiftelser; MIZŠ; Deutsche Forschungsgemeinschaft, DFG; Neurosurgical Research Foundation, NRF; Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja, MPNTR; U.S. Department of Energy, USDOE; European Cooperation in Science and Technology, COST; EU-ESF; Horizon 2020 , ICSC-NextGenerationEU; RGC; Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP; Institutul de Fizic? Atomic?, IFA; Ministry of Science and Technology of the People's Republic of China, MOST; Natural Sciences and Engineering Research Council of Canada, NSERC; Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science; GenT Programmes Generalitat Valenciana, Spain; Irish Rugby Football Union, IRFU; Cantons of Bern and Geneva; Chinese Academy of Sciences, CAS; Defence Science Institute, DSI; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, SNF; MNE; Agencia Nacional de Promoción Científica y Tecnológica, ANPCyT; Minerva Foundation; European Research Council, ERC; Royal Society of South Australia, RSSA; European Regional Development Fund, ERDF; CERN; Ministerstvo Školství, Mláde?e a T?lov?chovy, MŠMT; National Research Council Canada, NRC; Brookhaven National Laboratory, BNL; Alexander von Humboldt-Stiftung, AvH; Multiple Sclerosis Scientific Research Foundation, MSSRF; Ministry of Education, Culture, Sports, Science and Technology, MEXT; National Natural Science Foundation of China, NSFC; British Columbia Knowledge Development Fund, BCKDF, (21/SCI/017); British Columbia Knowledge Development Fund, BCKDF; Science and Technology Facilities Council, STFC, (ST/X005984/1); Science and Technology Facilities Council, STFC; Horizon 2020 Framework Programme, H2020, (754510, 754558); Horizon 2020 Framework Programme, H2020; UNCE, (SCI/013); NDGF, (CC-IN2P3); DNSRC, (IN2P3-CNRS); Norwegian Financial Mechanism, (2014-2021)
dc.identifier.doi10.1016/j.physletb.2023.138376
dc.identifier.issn0370-2693
dc.identifier.scopus2-s2.0-85183680739
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2023.138376
dc.identifier.urihttps://hdl.handle.net/11411/10202
dc.identifier.volume848
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier B.V.
dc.relation.ispartofPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_Scopus_20260402
dc.subject[Keyword Not Available]
dc.titleMeasurement of the tt¯ cross section and its ratio to the Z production cross section using pp collisions at s=13.6 TeV with the ATLAS detector
dc.typeArticle

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