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Search for top-quark decays t → Hq with 36 fb−1 of pp collision data at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

41Citations signalées, ce qui n’est pas une note de qualité
262Institutions déclarées
41Pays d’affiliation déclarés

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

Le résumé fourni par la source

Abstract A search for flavour-changing neutral current decays of a top quark into an up-type quark (q = u, c) and the Standard Model Higgs boson, t → Hq, is presented. The search is based on a dataset of pp collisions at $$ \sqrt{s} $$ s = 13 TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider and corresponding to an integrated luminosity of 36.1 fb−1. Two complementary analyses are performed to search for top-quark pair events in which one top quark decays into Wb and the other top quark decays into Hq, and target the $$ H\to b\overline{b} $$ H → b b ¯ and H → τ + τ − decay modes, respectively. The high multiplicity of b-quark jets, or the presence of hadronically decaying τ-leptons, is exploited in the two analyses respectively. Multivariate techniques are used to separate the signal from the background, which is dominated by top-quark pair production. No significant excess of events above the background expectation is found, and 95% CL upper limits on the t → Hq branching ratios are derived. The combination of these searches with ATLAS searches in diphoton and multilepton final states yields observed (expected) 95% CL upper limits on the t → Hc and t → Hu branching ratios of 1.1 × 10−3 (8.3 × 10−4) and 1.2 × 10−3 (8.3 × 10−4), respectively. The corresponding combined observed (expected) upper limits on the |λ tcH | and |λ tuH | couplings are 0.064 (0.055) and 0.066 (0.055), respectively.

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Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Search for top-quark decays t → Hq with 36 fb−1 of pp collision data at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector
Date Crossref
01/05/2019
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

Mohamed I UniversityCentre National de la Recherche ScientifiqueAix-Marseille UniversitéCentre de physique des particules de MarseilleInstitut National de Physique Nucléaire et de Physique des ParticulesUniversity of Massachusetts AmherstAzerbaijan National Academy of SciencesUniversité Paris-SudUniversité Paris-SaclayRoyal Holloway University of LondonUniversity of TorontoUniversity of CopenhagenUniversity of SussexTel Aviv UniversityTechnion – Israel Institute of TechnologyArgonne National LaboratoryIstituto Nazionale di Fisica Nucleare, Sezione di TriesteIstituto Nazionale di Fisica Nucleare, Gruppo Collegato di UdineThe University of TokyoBrookhaven National LaboratoryAGH University of KrakowNorthern Illinois UniversityLudwig-Maximilians-Universität MünchenBoğaziçi UniversityRutherford Appleton LaboratoryUniversity of California, Santa CruzAlexandru Ioan Cuza UniversityLIP - Laboratory of Instrumentation and Experimental Particle PhysicsIstituto Nazionale di Fisica Nucleare, Roma Tor VergataKyoto UniversityLund UniversityUniversity of GenevaP.N. Lebedev Physical Institute of the Russian Academy of SciencesOsservatorio astronomico di BolognaUniversity of BolognaUniversity of VictoriaIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiConsejo Nacional de Investigaciones Científicas y TécnicasInstituto de Física La PlataUniversidad Nacional de La PlataRadboud University NijmegenNational Institute for Subatomic PhysicsEuropean Organization for Nuclear ResearchJoint Institute for Nuclear ResearchHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringHumboldt-Universität zu BerlinNational Technical University of AthensUniversity of OklahomaIstituto Nazionale di Fisica Nucleare, Sezione di MilanoFermi National Accelerator LaboratoryUniversity of ChicagoUniversity of WashingtonUniversity of OregonUniversity of BirminghamIstituto Nazionale di Fisica Nucleare, Sezione di NapoliUniversity of GlasgowUniversitat de ValènciaInstituto de Física CorpuscularLawrence Berkeley National LaboratoryUniversity of California, BerkeleyUniversidade Federal do Rio de JaneiroMcGill UniversityUniversity of OxfordBrandeis UniversityUniversity of MichiganDeutsches Elektronen-Synchrotron DESYThe University of Texas at ArlingtonUniversity of SheffieldCommissariat à l'Énergie Atomique et aux Énergies AlternativesCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversThe University of Texas at AustinHeidelberg UniversityUniversity of BernUniversité Clermont AuvergneLaboratoire de Physique de Clermont AuvergneUniversity of AmsterdamColumbia UniversitySiberian Branch of the Russian Academy of SciencesBudker Institute of Nuclear PhysicsIstituto Nazionale di Fisica Nucleare, Sezione di PisaUniversity of California, IrvineIstituto Nazionale di Fisica Nucleare, Sezione di Roma IHigh Energy Accelerator Research OrganizationMichigan State UniversityDuke UniversityInstitute of Particle PhysicsUniversité de MontréalUniversity of IowaQueen Mary University of LondonUniversity of CambridgeUniversity of BonnInstitute for Theoretical and Experimental PhysicsJohannes Gutenberg University MainzHarvard UniversityUppsala UniversityComenius University BratislavaUniversity of Cape TownUniversity of Illinois Urbana-ChampaignUniversity of SiegenCzech Technical University in PragueUniversity of Science and Technology of ChinaChinese Academy of SciencesInstitute of High Energy PhysicsYork UniversityIstituto Nazionale di Fisica Nucleare, Sezione di LecceInstitute of Nuclear Physics, Polish Academy of SciencesSimon Fraser UniversityYale UniversityThe University of SydneyWeizmann Institute of ScienceUniversity of PennsylvaniaUniversity of Wisconsin–MadisonUniversity of WuppertalThe University of MelbourneUniversity of GenoaMax Planck Institute for PhysicsSLAC National Accelerator LaboratoryShanghai Jiao Tong UniversityIstituto Nazionale di Fisica Nucleare, Sezione di Roma TreUniversidad Autónoma de MadridLancaster UniversityKurchatov InstitutePetersburg Nuclear Physics InstituteMohammed V UniversityThe Ohio State UniversityDélégation Paris 7Université Paris CitéSorbonne UniversitéSorbonne Paris CitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesTufts UniversityUniversity of GöttingenUniversity of FreiburgGaziantep UniversityBahçeşehir UniversityStony Brook UniversityUniversität InnsbruckNational and Kapodistrian University of AthensIstituto Nazionale di Fisica Nucleare, Sezione di BolognaCarleton UniversityNational Research Nuclear University MEPhIUniversity of Hassan II CasablancaUniversité Savoie Mont BlancUniversité Grenoble AlpesUniversity of ArizonaStockholm UniversityUniversity of ManchesterUniversity of PittsburghTechnische Universität DresdenBoston UniversityPontificia Universidad Católica de ChileLomonosov Moscow State UniversityUniversity of LiverpoolInstitute for High Energy PhysicsInstitute for High Energy PhysicsUniversidad de Buenos AiresUniversity of JohannesburgTokyo Metropolitan UniversityFederico Santa María Technical UniversitySlovak Academy of SciencesInstitute of Experimental Physics of the Slovak Academy of SciencesUniversity of BergenUniversity of OsloTU Dortmund UniversityUniversity College LondonInstitute of Physics, Academia SinicaUniversity at Albany, State University of New YorkAnkara UniversityIndiana University BloomingtonOklahoma State UniversityUniversity of CalabriaChinese University of Hong KongIstanbul Bilgi UniversityUniversidade Federal de Juiz de ForaTbilisi State UniversityTRIUMFIowa State UniversityNanjing UniversityTsinghua UniversityUniversity of Chinese Academy of SciencesNational Tsing Hua UniversityAristotle University of ThessalonikiCzech Academy of SciencesFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicPalacký University OlomoucUniversity of LjubljanaJožef Stefan InstituteJožef Stefan International Postgraduate SchoolUniversity of EdinburghInstitut polytechnique de GrenobleUniversity of British ColumbiaNew York UniversityShandong UniversityCadi Ayyad UniversityIstituto Nazionale di Fisica Nucleare, Sezione di GenovaCharles UniversityUniversity of AlbertaFederal University of São João del-ReiUniversidade de São PauloJustus-Liebig-Universität GießenThe University of AdelaideUniversity of WarwickIstituto Nazionale di Fisica Nucleare, Sezione di PaviaSouthern Methodist UniversityIstituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And ApplicationsNagasaki Institute of Applied ScienceWest University of TimişoaraLouisiana Tech UniversityUniversity of New MexicoUniversity of TsukubaUniversity of WürzburgNational Academy of Sciences of BelarusB.I. Stepanov Institute of PhysicsShinshu UniversityUniversity of the WitwatersrandThe University of OsakaObayashi (Japan)Nagoya UniversityBelarusian State UniversityTokyo Institute of TechnologyThe University of Texas at DallasWaseda UniversityKobe UniversityKyushu UniversityNational Research Tomsk State UniversityUniversity of UdineUniversity of BelgradeIstanbul Aydın UniversityUniversity of MilanSapienza University of RomeUniversity of TrentoHong Kong University of Science and TechnologyUniversity of PaviaUniversity of Hong KongUniversity of SalentoUniversidad Antonio NariñoKTH Royal Institute of TechnologyUniversity of Rome Tor VergataA. Alikhanyan National LaboratoryHiroshima Institute of TechnologyOkayama University of ScienceRoma Tre UniversityJagiellonian UniversityInstitute of PhysicsUniversity of the AegeanNational Institute for Research and Development of Isotopic and Molecular TechnologiesCentre de Calcul de l’Institut National de Physique Nucléaire et de Physique des ParticulesUniversity of PisaThe Abdus Salam International Centre for Theoretical Physics (ICTP)University of SharjahNovosibirsk State UniversityTOBB University of Economics and TechnologyUniversität HamburgKyoto University of EducationUniversity of LisbonInstitute for Particle and Nuclear PhysicsHUN-REN Wigner Research Centre for PhysicsTransylvania University of BrașovGiresun UniversityUniversity of CoimbraMoscow Institute of Physics and Technology

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Les sujets associés

Particle physics theoretical and experimental studiesHigh-Energy Particle Collisions ResearchQuantum Chromodynamics and Particle Interactions

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