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Probing the flavour structure of dimension-6 EFT operators in multilepton final states in proton-proton collisions at s=13 TeV

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Özet

An analysis of the flavour structure of dimension-6 effective field theory (EFT) operators in multilepton final states is presented, focusing on the interactions of quarks with Z bosons. For the first time, the flavour structure of these operators is disentangled by simultaneously probing the interactions with different quark generations. The analysis targets the associated production of a top quark pair and a Z boson, as well as diboson processes in final states with at least three leptons, which can be electrons or muons. The data were recorded by the CMS experiment in the years 2016–2018 in proton-proton collisions at a centre-of-mass energy of 13 TeV and correspond to an integrated luminosity of 138 fb−1. Consistency with the standard model of particle physics is observed and limits are set on the selected Wilson coefficients, split into couplings to light- and heavy-quark generations. © The Author(s) 2026.

Anahtar Kelimeler

Flavour PhysicsHadron-Hadron ScatteringTop Physics
RDL Kalıcı Bağlantı (PID)
https://rdlopen.rawdatalibrary.net/r/ebyu/10452Resmi atıflarda kullanılan kalıcı adres
DOI
https://doi.org/10.1007/jhep03(2026)140Yayıncı resmi DOI adresi
Tam Kayıt
AlanDeğerDil
dc.contributor.authorHayrapetyan, A.
dc.contributor.authorMakarenko, V.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAndrejkovic, J.W.
dc.contributor.authorBenato, L.
dc.contributor.authorBergauer, T.
dc.contributor.authorDragicevic, M.
dc.contributor.authorGiordano, C.
dc.contributor.authorHussain, P.S.
dc.contributor.authorJeitler, M.
dc.contributor.authorKrammer, N.
dc.contributor.authorLi, A.
dc.contributor.authorLiko, D.
dc.contributor.authorMatthewman, M.
dc.contributor.authorMikulec, I.
dc.contributor.authorSchieck, J.
dc.contributor.authorSchwarz, D.
dc.contributor.authorSchöfbeck, R.
dc.contributor.authorShooshtari, M.
dc.contributor.authorSonawane, M.
dc.contributor.authorWaltenberger, W.
dc.contributor.authorWulz, C.-E.
dc.contributor.authorJanssen, T.
dc.contributor.authorKwon, H.
dc.contributor.authorOcampo Henao, D.
dc.contributor.authorVan Laer, T.
dc.contributor.authorVan Mechelen, P.
dc.contributor.authorBierkens, J.
dc.contributor.authorBreugelmans, N.
dc.contributor.authorD’Hondt, J.
dc.contributor.authorDansana, S.
dc.contributor.authorDe Moor, A.
dc.contributor.authorDelcourt, M.
dc.contributor.authorHeyen, F.
dc.contributor.authorHong, Y.
dc.contributor.authorKashko, P.
dc.contributor.authorLowette, S.
dc.contributor.authorMakarenko, I.
dc.contributor.authorMüller, D.
dc.contributor.authorSong, J.
dc.contributor.authorTavernier, S.
dc.contributor.authorTytgat, M.
dc.contributor.authorVan Onsem, G.P.
dc.contributor.authorVan Putte, S.
dc.contributor.authorVannerom, D.
dc.contributor.authorBilin, B.
dc.contributor.authorClerbaux, B.
dc.contributor.authorDas, A.K.
dc.contributor.authorDe Bruyn, I.
dc.date.accessioned2026-10-18T20:25:40.042826858Z
dc.date.available2026-10-18T20:25:40.042826858Z
dc.date.issued2026
dc.description.abstractAn analysis of the flavour structure of dimension-6 effective field theory (EFT) operators in multilepton final states is presented, focusing on the interactions of quarks with Z bosons. For the first time, the flavour structure of these operators is disentangled by simultaneously probing the interactions with different quark generations. The analysis targets the associated production of a top quark pair and a Z boson, as well as diboson processes in final states with at least three leptons, which can be electrons or muons. The data were recorded by the CMS experiment in the years 2016–2018 in proton-proton collisions at a centre-of-mass energy of 13 TeV and correspond to an integrated luminosity of 138 fb−1. Consistency with the standard model of particle physics is observed and limits are set on the selected Wilson coefficients, split into couplings to light- and heavy-quark generations. © The Author(s) 2026.
dc.description.sponsorshipFunding text 1: We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centres and personnel of the Worldwide LHC Computing Grid and other centres for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC, the CMS detector, and the supporting computing infrastructure provided by the following funding agencies: SC (Armenia), BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES and BNSF (Bulgaria); CERN; CAS, MoST, and NSFC (China); MINCIENCIAS (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); ERC PRG, RVTT3 and MoER TK202 (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); SRNSF (Georgia); BMBF, DFG, and HGF (Germany); GSRI (Greece); NKFIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIT and NRF (Republic of Korea); MES (Latvia); LMTLT (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MES and NSC (Poland); FCT (Portugal); MESTD (Serbia); MICIU/AEI and PCTI (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); MHESI and NSTDA (Thailand); TUBITAK and TENMAK (T\u00FCrkiye); NASU (Ukraine); STFC (U.K.); DOE and NSF (U.S.A.). ; Funding text 2: Individuals have received support from the Marie-Curie programme and the European Research Council and Horizon 2020 Grant, contract Nos. 675440, 724704, 752730, 758316, 765710, 824093, 101115353, 101002207, 101001205, and COST Action CA16108 (European Union); the Leventis Foundation; the Alfred P. Sloan Foundation; the Alexander von Humboldt Foundation; the Science Committee, project no. 22rl-037 (Armenia); the Fonds pour la Formation \u00E0 la Recherche dans l\u2019Industrie et dans l\u2019Agriculture (FRIA-Belgium); the Beijing Municipal Science & Technology Commission, No. Z191100007219010, the Fundamental Research Funds for the Central Universities, the Ministry of Science and Technology of China under Grant No. 2023YFA1605804, and the Natural Science Foundation of China under Grant No. 12061141002 (China); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Shota Rustaveli National Science Foundation, grant FR-22-985 (Georgia); the Deutsche Forschungsgemeinschaft (DFG), among others, under Germany\u2019s Excellence Strategy \u2013 EXC 2121 \u201CQuantum Universe\u201D \u2013 390833306, and under project number 400140256 \u2013 GRK2497; the Hellenic Foundation for Research and Innovation (HFRI), Project Number 2288 (Greece); the Hungarian Academy of Sciences, the New National Excellence Program \u2013 \u00DANKP, the NKFIH research grants K 131991, K 133046, K 138136, K 143460, K 143477, K 146913, K 146914, K 147048, 2020-2.2.1-ED-2021-00181, TKP2021-NKTA-64, and 2021-4.1.2-NEMZ_KI-2024-00036 (Hungary); the Council of Science and Industrial Research, India; ICSC \u2013 National Research Centre for High Performance Computing, Big Data and Quantum Computing, FAIR \u2013 Future Artificial Intelligence Research, and CUP I53D23001070006 (Mission 4 Component 1), funded by the NextGenerationEU program (Italy); the Latvian Council of Science; the Ministry of Education and Science, project no. 2022/WK/14, and the National Science Center, contracts Opus 2021/41/B/ST2/01369 and 2021/43/B/ST2/01552 (Poland); the Funda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia, grant CEECIND/01334/2018 (Portugal); the National Priorities Research Program by Qatar National Research Fund; MICIU/AEI/10.13039/501100011033, ERDF/EU, \u201CEuropean Union NextGenerationEU/PRTR\u201D, and Programa Severo Ochoa del Principado de Asturias (Spain); the Chulalongkorn Academic into Its 2nd Century Project Advancement Project, and the National Science, Research and Innovation Fund via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation, grant B39G680009 (Thailand); the Kavli Foundation; the Nvidia Corporation; the SuperMicro Corporation; the Welch Foundation, contract C-1845; and the Weston Havens Foundation (U.S.A.).
dc.identifier.doi10.1007/jhep03(2026)140
dc.identifier.issn1029-8479
dc.identifier.issue3
dc.identifier.scopus2-s2.0-105035289959
dc.identifier.startpage140
dc.identifier.urihttps://rdlopen.rawdatalibrary.net/r/ebyu/10452
dc.identifier.volume2026
dc.language.isoen
dc.publisherSpringer Science and Business Media Deutschland GmbH
dc.relation.ispartofJournal of High Energy Physics
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectFlavour Physics
dc.subjectHadron-Hadron Scattering
dc.subjectTop Physics
dc.titleProbing the flavour structure of dimension-6 EFT operators in multilepton final states in proton-proton collisions at s=13 TeV
dc.typeArticle
dspace.entity.typePublication
rdl.citation.scopus0
rdl.oa.statusgold
rdl.source.indexSCOPUS