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Search for charged-lepton flavor violation in the production and decay of top quarks using trilepton final states in proton-proton collisions at s = 13 TeV

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201Institutions déclarées
48Pays d’affiliation déclarés

Résumé fourni par la source

A search is performed for charged-lepton flavor violating processes in top quark ( t ) production and decay. The data were collected by the CMS experiment from proton-proton collisions at a center-of-mass energy of 13 TeV and correspond to an integrated luminosity of 138 fb − 1 . The selected events are required to contain one opposite-sign electron-muon pair, a third charged lepton (electron or muon), and at least one jet of which no more than one is associated with a bottom quark. Boosted decision trees are used to distinguish signal from background, exploiting differences in the kinematics of the final states particles. The data are consistent with the standard model expectation. Upper limits at 95% confidence level are placed in the context of effective field theory on the Wilson coefficients, which range between 0.024 – 0.424 TeV − 2 depending on the flavor of the associated light quark and the Lorentz structure of the interaction. These limits are converted to upper limits on branching fractions involving up (charm) quarks, t → e μ u ( t → e μ c ), of 0.032 ( 0.498 ) × 10 − 6 , 0.022 ( 0.369 ) × 10 − 6 , and 0.012 ( 0.216 ) × 10 − 6 for tensorlike, vectorlike, and scalarlike interactions, respectively.

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Titre Crossref
Search for charged-lepton flavor violation in the production and decay of top quarks using trilepton final states in proton-proton collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>13</mml:mn> <mml:mtext> </mml:mtext> <mml:mtext> </mml:mtext> <mml:mi>TeV</mml:mi> </mml:math>
Date Crossref
24/01/2025
Éditeur
American Physical Society (APS)
Type
journal-article

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Alikhanyan National LaboratoryInstitute of High Energy PhysicsUniversity of AntwerpVrije Universiteit BrusselUniversité Libre de BruxellesGhent University HospitalUCLouvainRutherford Appleton LaboratoryCentro Brasileiro de Pesquisas FísicasUniversidade do Estado do Rio de JaneiroInstituto de Estudios AvanzadosInstituto Politécnico NacionalUniversidade Estadual Paulista (Unesp)Bulgarian Academy of SciencesSofia University "St. Kliment Ohridski"University of TarapacáBeihang UniversityTsinghua UniversityCalifornia Institute of TechnologyUniversity of FloridaMassachusetts Institute of TechnologyPeking UniversityUniversity of Science and Technology of ChinaFudan UniversityInstitute of Modern PhysicsRice UniversityZhejiang UniversityUniversidad de AntioquiaUniversity of SplitRuđer Bošković InstituteUniversity of CyprusCharles UniversityNational Polytechnic SchoolUniversidad San Francisco de QuitoAcademy of Scientific Research and TechnologyFayoum UniversityNational Institute of Chemical Physics and BiophysicsUniversity of HelsinkiHelsinki Institute of PhysicsSungkyunkwan UniversityLappeenranta-Lahti University of TechnologyCommissariat à l'Énergie Atomique et aux Énergies AlternativesUniversité Paris-SaclayCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversIbero American UniversityLaboratoire Leprince-RinguetInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgInstitute of Nuclear Physics of LyonInstitut de Physique des 2 Infinis de LyonSeoul National UniversityGeorgian Technical UniversityRWTH Aachen UniversityPurdue University West LafayetteDeutsches Elektronen-Synchrotron DESYTata Institute of Fundamental ResearchEuropean Organization for Nuclear ResearchSaha Institute of Nuclear PhysicsUniversity of KansasKyungpook National UniversityUniversität HamburgInstitute of Nuclear and Particle PhysicsNational and Kapodistrian University of AthensNational Technical University of AthensUniversity of IoanninaHUN-REN Wigner Research Centre for PhysicsEötvös Loránd UniversityUniversity of DebrecenHUN-REN Institute for Nuclear ResearchPanjab UniversityUniversity of DelhiUniversity of Wisconsin–MadisonNational Institute of Science Education and ResearchUniversity of Notre DameIndian Institute of Science Education and Research KolkataIndian Institute of Science Education and Research MohaliIndian Institute of Science Education and Research, BhopalIndian Institute of Science Education and Research BerhampurIndian Institute of Science Education and Research, TirupatiIsfahan University of TechnologyInstitute for Research in Fundamental SciencesUniversity College DublinIstituto Nazionale di Fisica Nucleare, Sezione di BariUniversity of Bari Aldo MoroPolytechnic University of BariIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of BolognaUniversity of PerugiaIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaUniversity of CataniaIstituto Nazionale di Fisica Nucleare, Sezione di CataniaIstituto Nazionale di Fisica Nucleare, Sezione di FirenzeUniversity of FlorenceIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIstituto Nazionale di Fisica Nucleare, Sezione di GenovaUniversity of GenoaIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaUniversity of Milano-BicoccaIstituto Nazionale di Fisica Nucleare, Sezione di NapoliUniversity of Naples Federico IIUniversity of BasilicataIstituto Nazionale di Fisica Nucleare, Sezione di PadovaUniversity of PaduaIstituto Nazionale di Fisica Nucleare, Sezione di PaviaUniversity of PaviaIstituto Nazionale di Fisica Nucleare, Sezione di PisaUniversity of PisaScuola Normale SuperioreUniversity of SienaIstituto Nazionale di Fisica Nucleare, Sezione di Roma ISapienza University of RomeIstituto Nazionale di Fisica Nucleare, Sezione di TorinoUniversity of TurinUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro”Istituto Nazionale di Fisica Nucleare, Sezione di TriesteUniversity of TriesteKansas State UniversityHanyang UniversityUniversity of California, Santa BarbaraTexas Tech UniversitySejong UniversityChonnam National University HospitalMitchell InstituteTexas A&M UniversityUniversity of Illinois ChicagoKyung Hee UniversityUniversity of SeoulFlorida State UniversityYonsei UniversityAmerican University of the Middle EastRiga Technical UniversityUniversity of LatviaVilnius UniversityUniversity of MalayaUniversidad de SonoraCatholic University of AmericaBenemérita Universidad Autónoma de PueblaUniversity of MontenegroUniversity of CanterburyQuaid-i-Azam UniversityJagiellonian UniversityAGH University of KrakowNational Centre for Nuclear ResearchUniversity of WarsawWarsaw University of TechnologyLIP - Laboratory of Instrumentation and Experimental Particle PhysicsUniversity of BelgradeCentro de Investigaciones Energéticas, Medioambientales y TecnológicasUniversity of AlabamaETH ZurichInstitute of Particle PhysicsUniversidad Autónoma de MadridUniversidad de CantabriaUniversity of ColomboUniversity of RuhunaPaul Scherrer InstituteUniversity of ZurichNational Central UniversityLaboratoire d’Annecy de Physique des ParticulesNational Taiwan UniversityChulalongkorn UniversityCukurova UniversityMiddle East Technical UniversityBoğaziçi UniversityIstanbul Technical UniversityIstanbul UniversityInstitute for Scintillation MaterialsKharkiv Institute of Physics and TechnologyUniversity of BristolImperial Valley CollegeUniversity of Puerto Rico SystemBrunel University of LondonBaylor UniversityBrown UniversityUniversity of California SystemUniversity of VirginiaCarnegie Mellon UniversityUniversity of Colorado BoulderUniversity of Colorado SystemCornell UniversityFermi National Accelerator LaboratoryFlorida Institute of TechnologyUniversity of IowaJohns Hopkins UniversityLawrence Livermore National LaboratoryUniversity of Maryland, College ParkUniversity of Minnesota SystemUniversity of MississippiUniversity of Nebraska–LincolnUniversity at Buffalo, State University of New YorkUniversidad del NoresteThe Ohio State UniversityPrinceton UniversityPurdue University NorthwestUniversity of RochesterRockefeller UniversityRutgers, The State University of New JerseyUniversity of Tennessee at KnoxvilleVanderbilt UniversityWayne State University

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