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Measurement of the $ \textrm{t}\overline{\textrm{t}}\textrm{H} $ and tH production rates in the H →$ \textrm{b}\overline{\textrm{b}} $ decay channel using proton-proton collision data at $ \sqrt{s} $ = 13 TeV

1Citations signalées — pas une note de qualité
206Institutions déclarées
51Pays d’affiliation déclarés

Résumé fourni par la source

An analysis of the production of a Higgs boson (H) in association with a top quark-antiquark pair ($\mathrm{t\bar{t}}$H) or a single top quark (tH) is presented. The Higgs boson decay into a bottom quark-antiquark pair (H $\to$$\mathrm{b\bar{b}}$) is targeted, and three different final states of the top quark decays are considered, defined by the number of leptons (electrons or muons) in the event. The analysis utilises proton-proton collision data collected at the CERN LHC with the CMS experiment at $\sqrt{s}$ = 13 TeV in 2016-2018, which correspond to an integrated luminosity of 138 fb$^{-1}$. The observed $\mathrm{t\bar{t}}$H production rate relative to the standard model expectation is 0.33 $\pm$ 0.26 = 0.33 $\pm$ 0.17 (stat) $\pm$ 0.21 (syst). Additionally, the $\mathrm{t\bar{t}}$H production rate is determined in intervals of Higgs boson transverse momentum. An upper limit at 95% confidence level is set on the tH production rate of 14.6 times the standard model prediction, with an expectation of 19.3$^{+9.2}_{-6.0}$. Finally, constraints are derived on the strength and structure of the coupling between the Higgs boson and the top quark from simultaneous extraction of the $\mathrm{t\bar{t}}$H and tH production rates, and the results are combined with those obtained in other Higgs boson decay channels.

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Institutions déclarées

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Alikhanyan National LaboratoryTU WienUniversity of AntwerpVrije Universiteit BrusselGene Therapy LaboratoryEuropean Union of Medical SpecialistsUCLouvainUniversidade do Estado do Rio de JaneiroSofie Biosciences (United States)SurgOne Foregut InstituteUniversity of TarapacáBeihang UniversityTsinghua UniversityNanjing Normal UniversityInstitute of High Energy PhysicsSouth China Normal UniversityFudan UniversityEIA UniversityUniversidad de AntioquiaUniversity of SplitRuđer Bošković InstituteUniversity of CyprusCharles UniversitySt. Charles HospitalUniversidad San Francisco de QuitoSuez Canal UniversityBritish University in EgyptModern AcademyFayoum UniversityNational Institute of Chemical Physics and BiophysicsHelsinki Institute of PhysicsLappeenranta-Lahti University of TechnologyInstitut de Recherche sur les Lois Fondamentales de l'UniversPurdue University West LafayetteÉcole PolytechniqueUniversité de Haute-AlsaceInstitut Pluridisciplinaire Hubert CurienInstitute of Nuclear Physics of LyonInstitut de Physique des 2 Infinis de LyonIstinye UniversityGeorgian Technical UniversityTbilisi State UniversityFH AachenBrandenburg University of Applied SciencesForschungszentrum JülichKarlsruhe Institute of TechnologyDemocritus University of ThraceAthens State UniversityNTL Institute for Applied Behavioral ScienceAbiola Ajimobi Technical University IbadanUniversity of IoanninaInstitute for Particle and Nuclear PhysicsEötvös Loránd UniversityUniversity of DebrecenPanjab UniversityUniversity of DelhiVisva-Bharati UniversityIndian Institute of Technology MadrasIndian Institute of Management BangaloreIndian Institute of Science BangaloreTata Institute of Fundamental ResearchNational Institute of Science Education and ResearchIndian Institute of Technology BhubaneswarInstitute of Physics, BhubaneshwarIndian Institute of Science Education and Research PuneIsfahan University of TechnologySharif University of TechnologyUniversity of Science and Technology of MazandaranUniversity College DublinIstituto Nazionale di Fisica Nucleare, Sezione di BariUniversity of Bari Aldo MoroHelwan UniversityIstituto Nazionale di Fisica Nucleare, Sezione di BolognaIstituto Nazionale di Fisica Nucleare, Sezione di CataniaFlorence (Netherlands)Frascati ScienzaMarconi UniversityLaboratori Guglielmo Marconi (Italy)Genoa (Brazil)Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaNaples Anesthesia & Physician AssociatesFermi National Accelerator LaboratoryIstituto Nazionale di Fisica Nucleare, Sezione di PaviaIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaIstituto Nazionale di Fisica Nucleare, Sezione di PisaScuola Normale SuperioreIstituto Nazionale di Fisica Nucleare, Sezione di Roma IIstituto Nazionale di Fisica Nucleare, Sezione di TorinoUniversity of TurinIstituto Nazionale di Fisica Nucleare, Sezione di TriesteGangneung–Wonju National UniversityChonnam National UniversityChonnam National University HospitalHanyang UniversityKyung Hee UniversitySejong UniversityUniversity of SeoulYonsei UniversitySungkyunkwan UniversityKuwait UniversityRiga High Tech UniversityVilnius UniversityVilnius University of Applied SciencesMalayan Colleges LagunaUniversity of MalayaUniversitas MalahayatiUniversidad de SonoraCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalSecretaría de Ciencia, Humanidades, Tecnología e InnovaciónIbero American UniversityUniversidad IberoamericanaUniversidad de PueblaUniversity of MontenegroCanterbury CollegeQuaid-i-Azam UniversityAGH University of KrakowNational Centre for Nuclear ResearchUniversity of WarsawWarsaw University of TechnologyTechin (Poland)LIP - Laboratory of Instrumentation and Experimental Particle PhysicsUniversity of BelgradeGrade Medical (Czechia)Ipca Laboratories (India)Vienna Institute for Nature Conservation & AnalysesUnidades Centrales Científico-TécnicasCentro de Investigaciones Energéticas, Medioambientales y TecnológicasUniversidad Autónoma de MadridUniversidad de OviedoInstituto de Física de CantabriaUniversity of ColomboUniversity of RuhunaETH ZurichStefan Meyer Institute for Subatomic PhysicsNational Central UniversityLaboratoire d’Annecy de Physique des ParticulesNational Taiwan UniversityChulalongkorn UniversityCukurova UniversityAdıyaman UniversityMiddle East Technical UniversityBoğaziçi UniversityMarmara UniversityKafkas UniversityIstanbul Technical UniversityHacettepe UniversityErzincan Binali Yıldırım UniversityYıldız Technical UniversityInstitute for Scintillation MaterialsAt BristolUniversity of BristolBristol HospitalSaint Thomas - Rutherford HospitalUniversity of SouthamptonBrunel University of LondonUniversidad de AméricaUniversity of AlabamaUniversity of West AlabamaBoston UniversityBrown UniversityBethel CollegeBethel UniversityShorter CollegeBethel UniversityKaramanoğlu Mehmetbey UniversityUniversity of California, DavisUniversity of California, RiversideUniversity of California San DiegoUniversity of California, Santa BarbaraCalifornia Institute of TechnologyCarnegie Mellon UniversityUniversity of Colorado SystemCornell UniversityUnited States Naval AcademyFlorida Department of StateFlorida Institute of TechnologyAin Shams UniversityUniversity of ChicagoBingöl UniversitySinop UniversityJohns Hopkins UniversityJohns Hopkins University School of Advanced International StudiesUniversity of KansasHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringUniversity of Minnesota SystemUniversity of Nebraska–LincolnUniversity of Nebraska SystemBuffalo State UniversityUniversity at Buffalo, State University of New YorkNorthwestern UniversityNotre Dame of Dadiangas UniversityState Library of OhioUniversity of Puerto Rico-MayaguezPurdue University NorthwestRice UniversityUniversity of RochesterRutgers, The State University of New JerseyRutgers Sexual and Reproductive Health and RightsUniversity of Tennessee SystemTexas A&M University at QatarTexas Tech UniversityVanderbilt HealthUrology of VirginiaWayne State CollegeUniversity of Wisconsin System

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Sujets associés

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