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Search for low-mass hidden-valley dark showers with non-prompt muon pairs in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

1Citations signalées — pas une note de qualité
277Institutions déclarées
54Pays d’affiliation déclarés

Résumé fourni par la source

A bstract A search for signatures of a dark analog to quantum chromodynamics is performed. The analysis targets long-lived dark mesons that decay into standard-model particles, with a high branching fraction of the dark mesons decaying into muons. The dark mesons are formed by the hadronisation of dark partons, which are produced by a decay of the Higgs boson. The search is performed using a data set corresponding to an integrated luminosity of 41.6 fb − 1 , which was collected in proton-proton collisions at $$ \sqrt{s}=13 $$ s = 13 TeV by the CMS experiment at the CERN LHC in 2018 using non-prompt muon triggers. The search is based on resonant muon pair signatures. Machine-learning techniques are employed in the analysis, utilising boosted decision trees to discriminate between signal and background. No significant excess is observed above the standard model expectation. Upper limits on the branching fraction of the Higgs boson decaying to dark partons are determined to be as low as 10 − 4 at 95% confidence level, surpassing and extending the existing limits on models with dark $$ \overset{\sim }{\upomega} $$ ω ~ mesons for mean proper decay lengths of less than 500 mm and for $$ \overset{\sim }{\upomega} $$ ω ~ masses down to 0.3 GeV. First limits are set for extended dark-shower models with two dark flavours that contain dark photons, probing their masses down to 0.33 GeV.

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DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Search for low-mass hidden-valley dark showers with non-prompt muon pairs in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV
Date Crossref
19/03/2026
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

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Alikhanyan National LaboratoryYerevan State UniversityInstitute of High Energy PhysicsTU WienUniversity of California, Santa BarbaraUniversity of AntwerpVrije Universiteit BrusselUniversity of Chinese Academy of SciencesGhent University HospitalUniversité Libre de BruxellesUniversity of Notre DameUCLouvainCentro Brasileiro de Pesquisas FísicasUniversidade do Estado do Rio de JaneiroUniversidade Estadual de Campinas (UNICAMP)Universidade Federal do Rio Grande do SulUniversidade do Estado do AmazonasUniversidade Federal do ABCBulgarian Academy of SciencesSofia University "St. Kliment Ohridski"University of TarapacáUniversidad Técnica Federico Santa MaríaBeihang UniversityTsinghua UniversityVanderbilt UniversityMassachusetts Institute of TechnologyPeking UniversityChina Center of Advanced Science and TechnologyFermi National Accelerator LaboratoryUniversity of FloridaDeutsches Elektronen-Synchrotron DESYSouth China Normal UniversityKyung Hee UniversityUniversity of Science and Technology of ChinaNanjing Normal UniversityZhengzhou UniversityHenan Normal UniversityUniversity of Shanghai for Science and TechnologyUniversity of IowaNational Taiwan UniversityFudan UniversityInstitute of Modern PhysicsZhejiang UniversityUniversidad de AntioquiaUniversity of SplitRuđer Bošković InstituteUniversity of CyprusCharles UniversityNational Polytechnic SchoolUniversidad San Francisco de QuitoBritish University in EgyptAcademy of Scientific Research and TechnologyCairo UniversityFayoum 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 LafayetteInstitut Polytechnique de ParisLaboratoire Leprince-RinguetIndian Institute of Technology HyderabadCentre National de la Recherche ScientifiqueUniversité de Haute-AlsaceInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgCentre de Calcul de l’Institut National de Physique Nucléaire et de Physique des ParticulesInstitute of Nuclear Physics of LyonInstitut de Physique des 2 Infinis de LyonGeorgian Technical UniversityRWTH Aachen UniversityEuropean Organization for Nuclear ResearchUniversität HamburgIndian Institute of Technology MadrasUniversity of WuppertalBrandenburg University of Technology Cottbus-SenftenbergForschungszentrum JülichKyungpook National UniversityNational Central UniversityNational Centre of Scientific Research "Demokritos"Institute of Nuclear and Particle PhysicsNational and Kapodistrian University of AthensNational Technical University of AthensUniversity of IoanninaHUN-REN Wigner Research Centre for PhysicsHUN-REN Institute for Nuclear ResearchBabeș-Bolyai UniversityEötvös Loránd UniversityAssiut UniversityUniversity of DebrecenUniversity of KansasPanjab UniversityPunjab Agricultural UniversityTata Institute of Fundamental ResearchUniversity of DelhiIndian Institute of Technology MandiUniversity of HyderabadUniversity of California San DiegoIndian Institute of Technology KanpurCalifornia Institute of TechnologySaha Institute of Nuclear PhysicsWayne State UniversityIndian Institute of Science Education and Research MohaliUniversity of Wisconsin–MadisonVisva-Bharati UniversityHomi Bhabha National InstituteIndian Institute of Technology BhubaneswarIndian Institute of Science Education and Research KolkataIndian Institute of Science Education and Research, BhopalIndian Institute of Science Education and Research BerhampurIndian Institute of Science Education and Research, TirupatiUniversity of Puerto Rico SystemIsfahan University of TechnologySharif University of TechnologyInstitute for Research in Fundamental SciencesUniversity of Science and Technology of MazandaranArak UniversityUniversity 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 PadovaUniversity of CagliariUniversity of PaduaLuleå University of TechnologyIstituto Nazionale di Fisica Nucleare, Sezione di PaviaUniversity of PaviaIstituto Officina dei MaterialiUniversity of PisaIstituto Nazionale di Fisica Nucleare, Sezione di PisaScuola Normale SuperioreUniversity of SienaUniversity of Petroleum and Energy StudiesIstituto 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”University of TriesteIstituto Nazionale di Fisica Nucleare, Sezione di TriesteSeoul National UniversityHanyang UniversityUniversity of SeoulUniversity of Illinois ChicagoTexas Tech UniversitySejong UniversityKavli Institute for the Physics and Mathematics of the UniverseYonsei UniversitySungkyunkwan UniversityAmerican University of the Middle EastKuwait UniversityRiga Technical UniversityUniversity of LatviaVilnius UniversityUniversity of MalayaNational University of MalaysiaUniversidad de SonoraInstituto de Estudios AvanzadosInstituto Politécnico NacionalUniversidad de OviedoIbero American UniversityBenemérita 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 AlabamaUniversidad Autónoma de MadridUniversidad de CantabriaUniversity of ColomboEastern University, Sri LankaUniversity of RuhunaÉcole Polytechnique Fédérale de LausanneUniversity of ZurichETH ZurichInstitute of Particle PhysicsStefan Meyer Institute for Subatomic PhysicsChulalongkorn UniversityTunis El Manar UniversityCukurova UniversityNear East UniversityKonya Technical UniversityIzmir UniversityBakırçay ÜniversitesiAdıyaman UniversityHacettepe UniversityMiddle East Technical UniversityYozgat Bozok ÜniversitesiBoğaziçi Universityİstanbul Sabahattin Zaim ÜniversitesiMarmara UniversityMilli Savunma ÜniversitesiInstitute of Information SecurityKafkas UniversityIstanbul Technical UniversityOkan UniversityIstanbul UniversityIstanbul University-CerrahpaşaYıldız Technical UniversityIstinye UniversityInstitute for Scintillation MaterialsKharkiv Institute of Physics and TechnologyUniversity of BristolRutherford Appleton LaboratoryUniversity of SouthamptonImperial Valley CollegeMonash UniversityBrunel University of LondonBaylor UniversityShorter CollegeCatholic University of AmericaBrown UniversityKaramanoğlu Mehmetbey UniversityUniversity of California SystemCalifornia Lutheran UniversityCarnegie Mellon UniversityUniversity of Colorado BoulderUniversity of Colorado SystemCornell UniversityUnited States Naval AcademyFlorida State UniversityFlorida 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 RepublicKansas State UniversityUniversity of Maryland, College ParkUniversity of Minnesota SystemUniversity of Nebraska–LincolnUniversity at Buffalo, State University of New YorkUniversidad del NoresteThe Ohio State UniversityPrinceton UniversityPurdue University NorthwestRice UniversityUniversity of RochesterRutgers, The State University of New JerseyUniversity of Tennessee at KnoxvilleMitchell InstituteTexas A&M UniversityHamad bin Khalifa UniversityUniversity of Virginia

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