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Accès ouvert déclaré 2023 article

Search for $$ t\overline{t}H/A\to t\overline{t}t\overline{t} $$ production in the multilepton final state in proton–proton collisions at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

10Citations signalées, ce qui n’est pas une note de qualité
277Institutions déclarées
41Pays d’affiliation déclarés

Rattachement africain : fr, us, de, Maroc, il, cl, gb, it, pl, ca, tr, ch, es, ro, az, se, ar, cz, gr, nl, tw, br, pt, no, jp, bd, sk, Afrique du Sud, cn, rs, au, ps, ae, ec, dk, ge, hk, si, ph, at, co. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

A bstract A search for a new heavy scalar or pseudo-scalar Higgs boson ( H/A ) produced in association with a pair of top quarks, with the Higgs boson decaying into a pair of top quarks ( H/A → $$ t\overline{t} $$ t t ¯ ) is reported. The search targets a final state with exactly two leptons with same-sign electric charges or at least three leptons. The analysed dataset corresponds to an integrated luminosity of 139 fb − 1 of proton–proton collisions collected at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC. Two multivariate classifiers are used to separate the signal from the background. No significant excess of events over the Standard Model expectation is observed. The results are interpreted in the context of a type-II two-Higgs-doublet model. The observed (expected) upper limits at 95% confidence level on the $$ t\overline{t}H/A $$ t t ¯ H / A production cross-section times the branching ratio of H/A → $$ t\overline{t} $$ t t ¯ range between 14 (10) fb and 6 (5) fb for a heavy Higgs boson with mass between 400 GeV and 1000 GeV, respectively. Assuming that only one particle, either the scalar H or the pseudo-scalar A , contributes to the $$ t\overline{t}t\overline{t} $$ t t ¯ t t ¯ final state, values of tan β below 1.2 or 0.5 are excluded for a mass of 400 GeV or 1000 GeV, respectively. These exclusion ranges increase to tan β below 1.6 or 0.6 when both particles are considered.

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Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Search for $$ t\overline{t}H/A\to t\overline{t}t\overline{t} $$ production in the multilepton final state in proton–proton collisions at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector
Date Crossref
26/07/2023
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 il ne compte pas comme une seconde source scientifique indépendante.

Les institutions déclarées

Aix-Marseille UniversitéCentre de physique des particules de MarseilleInstitut National de Physique Nucléaire et de Physique des ParticulesUniversity of Massachusetts AmherstUniversity of OklahomaUniversity of GöttingenBrookhaven National LaboratoryMohammed V UniversityTel Aviv UniversityTechnion – Israel Institute of TechnologyNew York UniversityPontificia Universidad Católica de ChileKing's College LondonIstituto Nazionale di Fisica Nucleare, Sezione di TriesteIstituto Nazionale di Fisica Nucleare, Gruppo Collegato di UdineJohannes Gutenberg University MainzCentre National de la Recherche ScientifiqueUniversité Savoie Mont BlancAGH University of KrakowUniversity of TorontoBrandeis UniversityNorthern Illinois UniversityIstanbul UniversityUniversity of GenevaRutherford Appleton LaboratoryUniversity of California, Santa CruzEuropean Organization for Nuclear ResearchBarcelona Institute of Science and TechnologyInstitute of Science and TechnologyUniversity of PaviaIstituto Nazionale di Fisica Nucleare, Sezione di PaviaAlexandru Ioan Cuza UniversityUniversidad de GranadaAzerbaijan National Academy of SciencesMcGill UniversityDeutsches Elektronen-Synchrotron DESYUniversity of Rome Tor VergataIstituto Nazionale di Fisica Nucleare, Roma Tor VergataWeizmann Institute of ScienceLund UniversityArgonne National LaboratoryColumbia UniversityIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of VictoriaIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiConsejo Nacional de Investigaciones Científicas y TécnicasInstituto de Física La PlataUniversidad Nacional de La PlataUniversity of EdinburghHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicNational Technical University of AthensNational Institute for Subatomic PhysicsCzech Technical University in PragueAcademia SinicaUniversity of ArizonaIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversity of SussexUniversity of BirminghamIstituto Nazionale di Fisica Nucleare, Sezione di NapoliUniversity of WashingtonUniversidad Autónoma de MadridUniversidade Federal do Rio de JaneiroLudwig-Maximilians-Universität MünchenUniversity of MichiganLIP - Laboratory of Instrumentation and Experimental Particle PhysicsUniversitat de ValènciaInstituto de Física CorpuscularUniversity of OsloUniversity of SheffieldCommissariat à l'Énergie Atomique et aux Énergies AlternativesUniversité Paris-SaclayCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversThe University of Texas at AustinUniversity of BernStockholm UniversityUniversity of MilanNational and Kapodistrian University of AthensLawrence Livermore National LaboratoryIstituto Nazionale di Fisica Nucleare, Sezione di PisaOklahoma State UniversityOklahoma State University Oklahoma CityLawrence Berkeley National LaboratoryIstituto Nazionale di Fisica Nucleare, Sezione di Roma IHigh Energy Accelerator Research OrganizationHumboldt-Universität zu BerlinUniversidade Federal de Juiz de ForaDuke UniversityUniversity of LiverpoolInstitute of Particle PhysicsUniversité de MontréalUniversity of FreiburgUniversity of AmsterdamSapienza University of RomeObayashi (Japan)Nagoya UniversityOtsuka (Japan)Ochanomizu UniversityThe University of TokyoHarvard UniversityHarvard University PressUppsala UniversityPremier UniversityComenius University BratislavaUniversity of Cape TownUniversity of Illinois Urbana-ChampaignUniversity of Illinois SystemShandong UniversityUniversity of WuppertalNanjing UniversityUniversity of ThessalyAristotle University of ThessalonikiCarleton UniversityYale UniversityUniversity of BelgradeThe University of Texas at ArlingtonThe University of SydneyCharles UniversityHeidelberg UniversityUniversity of CambridgeInstitute of Nuclear Physics, Polish Academy of SciencesUniversity of PittsburghUniversity of BonnThe University of MelbourneIstituto Nazionale di Fisica Nucleare, Sezione di GenovaUniversity of GenoaUniversity College LondonMax Planck Institute for PhysicsUniversity of OregonSLAC National Accelerator LaboratoryPalacký University OlomoucUniversity of ManchesterUniversity of Science and Technology of ChinaChinese Academy of SciencesUniversity of OxfordInstitute of High Energy PhysicsLancaster UniversityTU Dortmund UniversityRoma Tre UniversityIstituto Nazionale di Fisica Nucleare, Sezione di Roma TreAn-Najah National UniversityLaboratoire de Physique des 2 Infinis Irène Joliot-CurieUniversity of GlasgowUniversity of SiegenBoğaziçi UniversityUniversité Paris CitéSorbonne UniversitéSorbonne Paris CitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesTufts UniversityUniversity of FribourgUniversity of WarwickIstinye UniversityUniversity of BergenStony Brook UniversityUniversidade do Estado do Rio de JaneiroUnited Arab Emirates UniversityLaboratoire AstroParticule et CosmologieRoyal Holloway University of LondonTechnische Universität DresdenSouthern Methodist UniversityQueen Mary University of LondonUniversity of JohannesburgUniversity of WürzburgUniversity of Colorado BoulderUniversity of PisaGaziantep UniversityUniversity of BolognaUniversity of Wisconsin–MadisonUniversity of Louisville HospitalUniversité Clermont AuvergneThe Ohio State UniversityShanghai Jiao Tong UniversityUniversidad Técnica Federico Santa MaríaSlovak Academy of SciencesInstitute of Experimental Physics of the Slovak Academy of SciencesSimon Fraser UniversityBoston UniversityMichigan State UniversityJustus-Liebig-Universität GießenUniversity of Chinese Academy of SciencesAnkara UniversityIndiana University BloomingtonIndiana UniversityUniversity of CopenhagenUniversity of IowaUniversity of CalabriaWestmont CollegeTRIUMFRadboud University NijmegenUniversity of the WitwatersrandUniversitat Autònoma de BarcelonaUniversity of MinhoUniversity of SalentoIstituto Nazionale di Fisica Nucleare, Sezione di LecceTbilisi State UniversityCollaborative Innovation Center of Quantum MatterTsinghua UniversityChinese University of Hong KongNational Tsing Hua UniversityUniversity of LjubljanaBen-Gurion University of the NegevUniversity of UdineInstitut polytechnique de GrenobleUniversité Grenoble AlpesUniversity of LisbonParthenope University of NaplesUniversity of British ColumbiaUniversity of TrentoFondazione Bruno KesslerKessler FoundationIstituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And ApplicationsUniversity of California, IrvineCalifornia University of PennsylvaniaUniversity of PennsylvaniaUniversidad de Buenos AiresInstituto de Física de Buenos AiresFundación Ciencias Exactas y NaturalesYork UniversityUniversité Ibn-TofailMillennium InstituteUniversidade de São PauloNational Centre of Scientific Research "Demokritos"Fermi National Accelerator LaboratoryUniversity of ChicagoLaboratoire de Physique de Clermont AuvergneThe University of Texas at DallasThe University of AdelaideCity University of New YorkUniversity of CoimbraUniversity of the Philippines DilimanUniversity of the Philippines SystemJagiellonian UniversityInstitute of PhysicsUniversity of AlbertaUniversity of the AegeanCentro Ricerche Enrico FermiWest University of TimişoaraCalifornia State University SystemCalifornia State University, FresnoInstitució Catalana de Recerca i Estudis AvançatsUniversity of New MexicoUniversity of TsukubaShinshu UniversityŌtani UniversityTokyo Institute of TechnologyIowa State UniversityKobe UniversityThe University of OsakaUniversitatea Națională de Știință și Tehnologie Politehnica BucureștiInstitute of Physics, Academia SinicaUniversity of Hong KongYeditepe UniversityWaseda UniversityIlia State UniversityUniversity of TarapacáKyushu UniversityUniversität InnsbruckKyoto UniversityUniversidad Andrés BelloHellenic Open UniversityKTH Royal Institute of TechnologyPeking UniversityHong Kong University of Science and TechnologyCity College of New YorkUniversidad Antonio NariñoTransylvania University of BrașovNational Institute for Research and Development of Isotopic and Molecular TechnologiesUniversidad Nacional de ColombiaLouisiana Tech UniversityUniversity of SharjahTOBB University of Economics and TechnologyUniversität HamburgKyoto University of EducationFederico Santa María Technical UniversityUniversity of La Serena

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Les sujets associés

Particle physics theoretical and experimental studiesCosmology and Gravitation TheoriesHigh-Energy Particle Collisions Research

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