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Accès ouvert déclaré 2022 article

Study of the doubly charmed tetraquark $${{{{{{\rm{T}}}}}}}_{{{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}}^{+}$$

325Citations signalées, ce qui n’est pas une note de qualité
117Institutions déclarées
20Pays d’affiliation déclarés

Rattachement africain : nl, gb, ch, es, fr, us, it, de, ru, br, pl, cn, ro, hu, ua, ie, au, se, ph, co. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

Abstract Quantum chromodynamics, the theory of the strong force, describes interactions of coloured quarks and gluons and the formation of hadronic matter. Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. Particles with an alternative quark content are known as exotic states. Here a study is reported of an exotic narrow state in the D 0 D 0 π + mass spectrum just below the D *+ D 0 mass threshold produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. The state is consistent with the ground isoscalar $${{{{{{\rm{T}}}}}}}_{{{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}}^{+}$$ T c c + tetraquark with a quark content of $${{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}\overline{{{{{{\rm{u}}}}}}}\overline{{{{{{\rm{d}}}}}}}$$ c c u ¯ d ¯ and spin-parity quantum numbers J P = 1 + . Study of the DD mass spectra disfavours interpretation of the resonance as the isovector state. The decay structure via intermediate off-shell D *+ mesons is consistent with the observed D 0 π + mass distribution. To analyse the mass of the resonance and its coupling to the D * D system, a dedicated model is developed under the assumption of an isoscalar axial-vector $${{{{{{\rm{T}}}}}}}_{{{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}}^{+}$$ T c c + state decaying to the D * D channel. Using this model, resonance parameters including the pole position, scattering length, effective range and compositeness are determined to reveal important information about the nature of the $${{{{{{\rm{T}}}}}}}_{{{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}}^{+}$$ T c c + state. In addition, an unexpected dependence of the production rate on track multiplicity is observed.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.

Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Study of the doubly charmed tetraquark $${{{{{{\rm{T}}}}}}}_{{{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}}^{+}$$
Date Crossref
16/06/2022
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

National Institute for Subatomic PhysicsUniversity of WarwickUniversity of ZurichUniversity of LiverpoolUniversidade de Santiago de CompostelaUniversity of BristolCentre National de la Recherche ScientifiqueUniversité Clermont AuvergneInstitut National de Physique Nucléaire et de Physique des ParticulesDélégation Paris 7Université Paris CitéSorbonne UniversitéSorbonne Paris CitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesUniversity of MichiganIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversity of CincinnatiTU Dortmund UniversityEuropean Organization for Nuclear ResearchUniversity of GlasgowUniversitat de BarcelonaUniversity of ManchesterPetersburg Nuclear Physics InstituteUniversity of CambridgeUniversidade Federal do Rio de JaneiroUniversité Paris-SaclayLaboratoire de Physique des 2 Infinis Irène Joliot-CurieIstituto Nazionale di Fisica Nucleare, Sezione di FirenzeIstituto Nazionale di Fisica Nucleare, Sezione di FerraraHeidelberg UniversityKurchatov InstituteInstitute for High Energy PhysicsSyracuse UniversityYandex School of Data AnalysisAix-Marseille UniversitéCentre de physique des particules de MarseilleÉcole PolytechniqueLaboratoire Leprince-RinguetÉcole Polytechnique Fédérale de LausanneCentro Brasileiro de Pesquisas FísicasUniversity of FlorenceImperial College LondonIstituto Nazionale di Fisica Nucleare, Sezione di GenovaUniversity of GenoaNational University of Science and TechnologyRWTH Aachen UniversityAGH University of KrakowIstituto Nazionale di Fisica Nucleare, Sezione di PisaIstituto Nazionale di Fisica Nucleare, Sezione di CagliariLomonosov Moscow State UniversityIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiUniversity of PaduaInstitute of Nuclear Physics, Polish Academy of SciencesWuhan UniversityUniversity of BirminghamUniversity of Modena and Reggio EmiliaUniversity of OxfordNational Research University Higher School of EconomicsSiberian Branch of the Russian Academy of SciencesBudker Institute of Nuclear PhysicsUniversity of Maryland, College ParkSouth China Normal UniversityInstitute for Nuclear ResearchUniversity of FerraraIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaUniversity of Milano-BicoccaUniversitat Ramon LlullUniversity of Chinese Academy of SciencesIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of BolognaIstituto Nazionale di Fisica Nucleare, Roma Tor VergataInstitute of High Energy PhysicsUniversité Savoie Mont BlancTsinghua UniversityUniversity of EdinburghHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringIstituto Nazionale di Fisica Nucleare, Sezione di BariUniversity of Bari Aldo MoroMassachusetts Institute of TechnologyLos Alamos National LaboratoryHunan UniversityUniversity of GroningenMaastricht UniversityUniversity of CagliariEötvös Loránd UniversityInstitute for Nuclear ResearchUniversity College DublinKharkiv Institute of Physics and TechnologyIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaRutherford Appleton LaboratoryMonash UniversityNovosibirsk State UniversityUppsala UniversityPeking UniversityState Key Laboratory of Nuclear Physics and TechnologyNational Centre for Nuclear ResearchUniversity of Rome Tor VergataPontifícia Universidade Católica do Rio de JaneiroUniversidade Federal do Triângulo MineiroCentral China Normal UniversityUniversitat de ValènciaInstituto de Física CorpuscularNational Research Tomsk State UniversityTomsk Polytechnic UniversityUniversity of SienaScuola Normale SuperioreUniversity of MilanMindanao State University – Iligan Institute of TechnologyIstituto Nazionale di Fisica Nucleare, Sezione di Roma IUniversity of RostockUniversidad Nacional de ColombiaUniversity of BonnP.N. Lebedev Physical Institute of the Russian Academy of SciencesUniversity of PisaUniversity of BasilicataMax Planck Institute for Nuclear PhysicsUniversity of Urbino

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

Les sujets associés

Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research

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