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Accès ouvert déclaré 2024 article

A search for top-squark pair production, in final states containing a top quark, a charm quark and missing transverse momentum, using the 139 fb−1 of pp collision data collected by the ATLAS detector

1Citations signalées — pas une note de qualité
263Institutions déclarées
44Pays d’affiliation déclarés

Résumé fourni par la source

A bstract This paper presents a search for top-squark pair production in final states with a top quark, a charm quark and missing transverse momentum. The data were collected with the ATLAS detector during LHC Run 2 and correspond to an integrated luminosity of 139 fb − 1 of proton-proton collisions at a centre-of-mass energy of $$ \sqrt{s} $$ s = 13 TeV. The analysis is motivated by an extended Minimal Supersymmetric Standard Model featuring a non-minimal flavour violation in the second- and third-generation squark sector. The top squark in this model has two possible decay modes, either $$ {\tilde{t}}_1\to c{\overset{\sim }{\chi}}_1^0 $$ t ~ 1 → c χ ~ 1 0 or $$ {\tilde{t}}_1\to t{\overset{\sim }{\chi}}_1^0 $$ t ~ 1 → t χ ~ 1 0 , where the $$ {\overset{\sim }{\chi}}_1^0 $$ χ ~ 1 0 is undetected. The analysis is optimised assuming that both of the decay modes are equally probable, leading to the most likely final state of $$ tc+{E}_T^{\textrm{miss}} $$ tc + E T miss . Good agreement is found between the Standard Model expectation and the data in the search regions. Exclusion limits at 95% CL are obtained in the $$ m\left({\tilde{t}}_1\right) $$ m t ~ 1 vs. $$ m\left({\overset{\sim }{\chi}}_1^0\right) $$ m χ ~ 1 0 plane and, in addition, limits on the branching ratio of the $$ {\tilde{t}}_1\to t{\overset{\sim }{\chi}}_1^0 $$ t ~ 1 → t χ ~ 1 0 decay as a function of m ( $$ {\tilde{t}}_1 $$ t ~ 1 ) are also produced. Top-squark masses of up to 800 GeV are excluded for scenarios with light neutralinos, and top-squark masses up to 600 GeV are excluded in scenarios where the neutralino and the top squark are almost mass degenerate.

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Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
A search for top-squark pair production, in final states containing a top quark, a charm quark and missing transverse momentum, using the 139 fb−1 of pp collision data collected by the ATLAS detector
Date Crossref
26/07/2024
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

Aix-Marseille UniversitéCentre de physique des particules de MarseilleInstitut National de Physique Nucléaire et de Physique des ParticulesUniversity of OklahomaUniversity of GöttingenTU Dortmund UniversityBrookhaven National LaboratoryMohammed V UniversityTel Aviv UniversityTechnion – Israel Institute of TechnologyNew York UniversityKing's College LondonIstituto Nazionale di Fisica Nucleare, Sezione di TriesteIstituto Nazionale di Fisica Nucleare, Gruppo Collegato di UdineLaboratoire d’Annecy de Physique des ParticulesUniversité Savoie Mont BlancJagiellonian UniversityAGH University of KrakowBrandeis UniversityUniversity of ManchesterNorthern Illinois UniversityIstanbul UniversityRutherford 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 PaviaJohannes Gutenberg University MainzAlexandru Ioan Cuza UniversityAzerbaijan National Academy of SciencesMcGill UniversityRoyal Holloway University of LondonUniversity of Science and Technology of ChinaUniversity of Rome Tor VergataIstituto Nazionale di Fisica Nucleare, Roma Tor VergataUniversitat de ValènciaInstituto de Física CorpuscularWeizmann Institute of ScienceLund UniversityWaseda UniversityUniversity of BonnBoğaziçi UniversityColumbia UniversityIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of VictoriaIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiInstitut polytechnique de GrenobleCentre National de la Recherche ScientifiqueLaboratoire de Physique Subatomique et de CosmologieUniversité Grenoble AlpesUniversity of EdinburghOklahoma State University Oklahoma CityHoria 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 AthensUniversity of GenevaCzech Technical University in PragueLancaster UniversityAcademia SinicaUniversity of LiverpoolStony Brook UniversityIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversité Paris-SaclayLaboratoire de Physique des 2 Infinis Irène Joliot-CurieUniversity of SussexUniversidad Técnica Federico Santa MaríaUniversity of BirminghamIstituto Nazionale di Fisica Nucleare, Sezione di NapoliConsejo Nacional de Investigaciones Científicas y TécnicasInstituto de Física La PlataUniversidad Nacional de La PlataUniversity of WashingtonUniversidad Autónoma de MadridUniversidade Federal do Rio de JaneiroLudwig-Maximilians-Universität MünchenUniversity of MichiganLIP - Laboratory of Instrumentation and Experimental Particle PhysicsUniversity of OsloUniversity of SheffieldThe University of Texas at AustinStockholm UniversityUniversity of MilanNational and Kapodistrian University of AthensLawrence Livermore National LaboratoryIstituto Nazionale di Fisica Nucleare, Sezione di PisaIstituto Nazionale di Fisica Nucleare, Sezione di Roma IHigh Energy Accelerator Research OrganizationThe University of TokyoDeutsches Elektronen-Synchrotron DESYHumboldt-Universität zu BerlinInstitute of Nuclear Physics, Polish Academy of SciencesDuke UniversityUniversité de MontréalUniversity of FreiburgNational Institute for Subatomic PhysicsSapienza University of RomeNagoya UniversityOchanomizu UniversityHarvard University PressComenius University BratislavaUniversity of California, IrvineUniversity of Cape TownUniversity of Illinois SystemThe Polytechnic University of JapanUniversité Mohammed VI PolytechniqueCalifornia University of PennsylvaniaSlovak Academy of SciencesInstitute of Experimental Physics of the Slovak Academy of SciencesCommissariat à l'Énergie Atomique et aux Énergies AlternativesCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversUniversity of ThessalyAristotle University of ThessalonikiCarleton UniversityQueen Mary University of LondonYale UniversityUniversity of BelgradeThe University of Texas at ArlingtonUniversity of BolognaHeidelberg UniversityUniversity of CambridgeUniversity of PittsburghThe University of MelbourneIstituto Nazionale di Fisica Nucleare, Sezione di GenovaUniversity of GenoaMax Planck Institute for PhysicsSLAC National Accelerator LaboratoryPalacký University OlomoucUniversity of OxfordUniversity College LondonChinese Academy of SciencesAn-Najah National UniversityUniversity of GlasgowUniversity of SiegenUniversidad de Buenos AiresInstituto de Física de Buenos AiresFundación Ciencias Exactas y NaturalesUniversité Paris CitéSorbonne UniversitéSorbonne Paris CitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesTufts UniversityUniversity of BernUniversity of FribourgUniversity of WarwickIstinye UniversityUniversidade do Estado do Rio de JaneiroUnited Arab Emirates UniversityUppsala UniversityLawrence Berkeley National LaboratoryLaboratoire AstroParticule et CosmologieCharles UniversityTechnische Universität DresdenUniversity of JohannesburgUniversity of WürzburgUniversity of Colorado BoulderIstituto Nazionale di Fisica Nucleare, Sezione di Roma TreGaziantep UniversityUniversity of CalabriaUniversité Clermont AuvergneThe Ohio State UniversityUniversity of WuppertalUniversity of BergenSimon Fraser UniversityMichigan State UniversityJustus-Liebig-Universität GießenUniversity of Chinese Academy of SciencesNanjing UniversityAnkara UniversityIndiana UniversityUniversity of PisaUniversity of CopenhagenWestmont CollegeRadboud University NijmegenUniversity of the WitwatersrandUniversity of TorontoUniversitat Autònoma de BarcelonaUniversity of MinhoUniversity of SalentoIstituto Nazionale di Fisica Nucleare, Sezione di LecceUniversidade Federal de Juiz de ForaTbilisi State UniversityArgonne National LaboratoryShanghai Jiao Tong UniversityInstitute of Particle PhysicsCollaborative Innovation Center of Quantum MatterTsinghua UniversityChinese University of Hong KongUniversity of ArizonaNational Tsing Hua UniversityUniversity of LjubljanaBen-Gurion University of the NegevUniversity of UdineUniversity of LisbonParthenope University of NaplesUniversity of TrentoIstituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And ApplicationsYork UniversitySouthern Methodist UniversityRoma Tre UniversityPontificia Universidad Católica de ChileMillennium InstituteUniversity of ChicagoUniversidade de São PauloUniversité Ibn-TofailLouisiana Tech UniversityShandong UniversityThe University of AdelaideCity University of New YorkUniversity of CoimbraUniversity of the Philippines DilimanUniversity of the AegeanUniversity of IowaStanford UniversityUniversity of British ColumbiaNational Centre of Scientific Research "Demokritos"University of AlbertaCentro Ricerche Enrico FermiWest University of TimişoaraCalifornia State University SystemInstitució Catalana de Recerca i Estudis AvançatsUniversity of TsukubaŌtani UniversityTokyo Institute of TechnologyIowa State UniversityTechnical University of MunichKobe UniversityThe University of OsakaNational University of Science and TechnologyUniversity of Hong KongYeditepe UniversityIlia State UniversityUniversity of TarapacáKyoto UniversityUniversität InnsbruckUniversidad Andrés BelloHellenic Open UniversityKTH Royal Institute of TechnologyPeking UniversityHong Kong University of Science and TechnologySun Yat-sen UniversityCentro Nacional de MicroelectrónicaInstitut de Microelectrònica de BarcelonaUniversité Toulouse III - Paul SabatierUniversité Fédérale de Toulouse Midi-PyrénéesUniversidad Antonio NariñoThe University of SydneyUniversität HamburgKyushu UniversityPremier UniversityTransylvania University of BrașovNational Institute for Research and Development of Isotopic and Molecular TechnologiesUniversidad Nacional de ColombiaUniversity of SharjahBulgarian Academy of SciencesInstitute for Nuclear Research and Nuclear EnergyWashington CollegeUniversity of La SerenaTOBB University of Economics and TechnologyMongolian Academy of SciencesUniversity of California System

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

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