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Accès ouvert déclaré 2024 article

Search for long-lived heavy neutral leptons with lepton flavour conserving or violating decays to a jet and a charged lepton

9Citations signalées — pas une note de qualité
279Institutions déclarées
52Pays d’affiliation déclarés

Résumé fourni par la source

A bstract A search for long-lived heavy neutral leptons (HNLs) is presented, which considers the hadronic final state and coupling scenarios involving all three lepton generations in the 2–20 GeV HNL mass range for the first time. Events comprising two leptons (electrons or muons) and jets are analyzed in a data sample of proton-proton collisions, recorded with the CMS experiment at the CERN LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb − 1 . A novel jet tagger, based on a deep neural network, has been developed to identify jets from an HNL decay using various features of the jet and its constituent particles. The network output can be used as a powerful discriminating tool to probe a broad range of HNL lifetimes and masses. Contributions from background processes are determined from data. No excess of events in data over the expected background is observed. Upper limits on the HNL production cross section are derived as functions of the HNL mass and the three coupling strengths V ℓ N to each lepton generation ℓ and presented as exclusion limits in the coupling-mass plane, as lower limits on the HNL lifetime, and on the HNL mass. In this search, the most stringent limit on the coupling strength is obtained for pure muon coupling scenarios; values of | $$ {V}_{\mu \textrm{N}}^2 $$ V μ N 2 | > 5 (4) × 10 −7 are excluded for Dirac (Majorana) HNLs with a mass of 10 GeV at a confidence level of 95% that correspond to proper decay lengths of 17 (10) mm.

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DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Search for long-lived heavy neutral leptons with lepton flavour conserving or violating decays to a jet and a charged lepton
Date Crossref
19/03/2024
Éditeur
Springer Science and Business Media LLC
Type
journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude et ne compte pas comme une seconde source scientifique indépendante.

Institutions déclarées

A. Alikhanyan National LaboratoryYerevan State UniversityInstitute of High Energy PhysicsIndian Institute of Technology MadrasTU WienUniversity of AntwerpInstitut de Physique des 2 Infinis de LyonUniversity of California, Santa BarbaraArab Academy for Science, Technology, and Maritime TransportVrije Universiteit BrusselGhent University HospitalUniversité Libre de BruxellesUniversity of Notre DameUCLouvainTata Institute of Fundamental ResearchCentro Brasileiro de Pesquisas FísicasUniversidade do Estado do Rio de JaneiroUniversidade Estadual de Campinas (UNICAMP)Universidade Federal do Rio Grande do SulInstituto de Estudios AvanzadosInstituto Politécnico NacionalUniversidade Federal do ABCBulgarian Academy of SciencesSofia University "St. Kliment Ohridski"University of TarapacáBeihang UniversityTsinghua UniversityUniversity of IowaNanjing Normal UniversityUniversity of Chinese Academy of SciencesChina Center of Advanced Science and TechnologyChina Spallation Neutron SourceCalifornia Institute of TechnologyUniversity of FloridaEuropean Organization for Nuclear ResearchMassachusetts Institute of TechnologyPeking UniversityUniversity of Science and Technology of ChinaHenan Normal UniversityFudan UniversityInstitute of Modern PhysicsZhejiang UniversityUniversidad de AntioquiaUniversity of SplitRuđer Bošković InstituteRWTH Aachen UniversityUniversity of CyprusCharles UniversityNational Polytechnic SchoolUniversidad San Francisco de QuitoCairo UniversityAcademy of Scientific Research and TechnologySuez UniversityBritish University in EgyptFayoum UniversityNational Institute of Chemical Physics and BiophysicsUniversity of HelsinkiHelsinki Institute of PhysicsLappeenranta-Lahti University of TechnologyCommissariat à l'Énergie Atomique et aux Énergies AlternativesUniversité Paris-SaclayCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversPurdue University West LafayetteCentre National de la Recherche ScientifiqueÉcole PolytechniqueIbero American UniversityInstitut National de Physique Nucléaire et de Physique des ParticulesLaboratoire Leprince-RinguetUniversité de Haute-AlsaceInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgInstitute of Nuclear Physics of LyonSeoul National UniversityGeorgian Technical UniversityIlia State UniversityDeutsches Elektronen-Synchrotron DESYUniversity of California San DiegoUniversidade do Estado do AmazonasErzincan Binali Yıldırım UniversitySaha Institute of Nuclear PhysicsUniversität HamburgIsfahan University of TechnologyUniversity of WuppertalBrandenburg University of Technology Cottbus-SenftenbergForschungszentrum JülichUniversity of KansasKyungpook National UniversityNational Centre of Scientific Research "Demokritos"Institute of Nuclear and Particle PhysicsNational and Kapodistrian University of AthensNational Technical University of AthensUniversity of IoanninaUniversity of DebrecenHUN-REN Wigner Research Centre for PhysicsHUN-REN Institute for Nuclear ResearchBabeș-Bolyai UniversityEötvös Loránd UniversityAssiut UniversityKároly Róbert University CollegePanjab UniversityPunjab Agricultural UniversityUniversity of DelhiVisva-Bharati UniversityUniversity of Wisconsin–MadisonBirla Institute of Technology, MesraNational Institute of Science Education and ResearchHomi Bhabha National InstituteIndian Institute of Technology BhubaneswarIndian Institute of Science Education and Research KolkataIndian Institute of Science Education and Research MohaliIndian Institute of Science Education and Research, BhopalUniversity of HyderabadIndian Institute of Science Education and Research BerhampurIndian Institute of Science Education and Research, TirupatiSharif University of TechnologyUniversity of Science and Technology of MazandaranInstitute for Research in Fundamental SciencesUniversity College DublinIstituto Nazionale di Fisica Nucleare, Sezione di BariUniversity of Bari Aldo MoroPolytechnic University of BariHelwan UniversityIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of BolognaNational Agency for New Technologies, Energy and Sustainable Economic DevelopmentUniversity of PerugiaIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaUniversity of CataniaIstituto Nazionale di Fisica Nucleare, Sezione di CataniaCentro Siciliano di Fisica Nucleare e di Struttura della MateriaIstituto Nazionale di Fisica Nucleare, Sezione di FirenzeUniversity of FlorenceIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiMarconi UniversityIstituto 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 BasilicataScuola Superiore MeridionaleIstituto Nazionale di Fisica Nucleare, Sezione di PadovaFermi National Accelerator LaboratoryUniversity of PaduaAin Shams UniversityIstituto Nazionale di Fisica Nucleare, Sezione di PaviaUniversity of PaviaIstituto Officina dei MaterialiUniversity of PisaIstituto Nazionale di Fisica Nucleare, Sezione di 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 UniversitySungkyunkwan UniversityTexas Tech UniversitySejong UniversityChonnam National UniversityMitchell 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 MalayaNational University of MalaysiaUniversidad de SonoraCatholic University of AmericaBenemérita Universidad Autónoma de PueblaUniversity of MontenegroUniversity of CanterburyQuaid-i-Azam 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 OviedoUniversidad de CantabriaInstituto de Física de CantabriaUniversity of ColomboEastern University, Sri LankaTrincomalee HospitalUniversity of RuhunaÉcole Polytechnique Fédérale de LausanneUniversity of ZurichPaul Scherrer InstituteStefan Meyer Institute for Subatomic PhysicsNational Central UniversityLaboratoire d’Annecy de Physique des ParticulesNational Taiwan UniversityChulalongkorn UniversityCukurova UniversityNear East UniversityKonya Technical UniversityIzmir UniversityBakırçay ÜniversitesiAdıyaman UniversityMiddle East Technical UniversityYozgat Bozok ÜniversitesiBoğaziçi UniversityMarmara UniversityMilli Savunma ÜniversitesiKafkas UniversityIstanbul Technical UniversityOkan UniversityHacettepe UniversityIstanbul UniversityIstanbul University-CerrahpaşaYıldız Technical UniversityInstitute for Scintillation MaterialsKharkiv Institute of Physics and TechnologyUniversity of BristolRutherford Appleton LaboratoryUniversity of SouthamptonImperial Valley CollegeDurham UniversityUniversity of Puerto Rico SystemMonash UniversityBrunel University of LondonBaylor UniversityBrown UniversityShorter CollegeKaramanoğlu Mehmetbey UniversityUniversity of California, DavisUniversity of California SystemUniversity of California, RiversideCarnegie Mellon UniversityUniversity of Colorado BoulderUniversity of Colorado SystemCornell UniversityUnited States Naval AcademyFlorida Institute of TechnologyBingöl UniversitySinop UniversityErciyes UniversityJohns Hopkins UniversityHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicLawrence Livermore National LaboratoryUniversity of Maryland, College ParkVanderbilt UniversityUniversity of Minnesota SystemUniversity of MississippiUniversity of Nebraska–LincolnUniversity at Buffalo, State University of New YorkUniversidad del NoresteThe Ohio State UniversityPrinceton UniversityPurdue University NorthwestRice UniversityUniversity of RochesterRockefeller UniversityRutgers, The State University of New JerseyUniversity of Tennessee at KnoxvilleTexas A&M University at QatarUniversity of VirginiaWayne State UniversityAcademy of Sciences Republic of Uzbekistan

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