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Accès ouvert déclaré 2025 article

Observation of Orbitally Excited B c + States

4Citations signalées — pas une note de qualité
100Institutions déclarées
21Pays d’affiliation déclarés

Résumé fourni par la source

The observation of a wide peaking structure in the B_{c}^{+}γ mass spectrum is reported using proton-proton collision data collected by the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb^{-1}. The statistical significance over the background-only hypothesis exceeds seven standard deviations. The width of the observed structure is larger than the expectation from a single-peak hypothesis, and is well described by an effective minimal model consisting of two narrow peaks located at 6704.8±5.5±2.8±0.3 MeV/c^{2} and 6752.4±9.5±3.1±0.3 MeV/c^{2}. The uncertainty terms are statistical, systematic, and associated to the knowledge of the B_{c}^{+} mass, respectively. The measured peak locations are in line with theoretical predictions for lowest excited P-wave B_{c}^{+} states, marking the first observation of orbitally excited beauty-charm mesons and providing important insights into the internal dynamics of hadrons containing two heavy quarks.

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Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.

Titre Crossref
Observation of Orbitally Excited <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msubsup> <mml:mi>B</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> States
Date Crossref
03/12/2025
Éditeur
American Physical Society (APS)
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

National Institute for Subatomic PhysicsUniversity of WarwickUniversity of ZurichUniversity of LiverpoolSyracuse UniversityUniversidade de Santiago de CompostelaUniversity of BristolUppsala UniversityUniversity of GlasgowUniversité Paris-SaclayUniversity of MichiganUniversité Clermont AuvergneIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiTU Dortmund UniversityEuropean Organization for Nuclear ResearchUniversity of ManchesterUniversity of CambridgeSorbonne UniversitéLaboratoire MédiationsUniversidade Federal do Rio de JaneiroPeking UniversityIstituto Nazionale di Fisica Nucleare, Sezione di FirenzeIstituto Nazionale di Fisica Nucleare, Sezione di FerraraUniversidade da CoruñaUniversitat Ramon LlullIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaUniversity of Chinese Academy of SciencesIstituto Nazionale di Fisica Nucleare, Roma Tor VergataConsejo Nacional de RectoresCentre National de la Recherche ScientifiqueAix-Marseille UniversitéCentre de physique des particules de MarseilleInstitut National de Physique Nucléaire et de Physique des ParticulesMassachusetts Institute of TechnologyÉcole PolytechniqueLaboratoire Leprince-RinguetUniversity of OxfordHeidelberg UniversityPontifícia Universidade Católica do Rio de JaneiroIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of EdinburghJagiellonian UniversityAGH University of KrakowInstitute of High Energy PhysicsIstituto Nazionale di Fisica Nucleare, Sezione di PisaCentro Brasileiro de Pesquisas FísicasIstituto Nazionale di Fisica Nucleare, Sezione di GenovaIstituto Nazionale di Fisica Nucleare, Sezione di Roma IIstituto Nazionale di Fisica Nucleare, Sezione di PadovaTaras Shevchenko National University of KyivInstitute of Nuclear Physics, Polish Academy of SciencesUniversity of BonnImperial College LondonUniversité Savoie Mont BlancLos Alamos National LaboratoryMaastricht UniversityAustralian Regenerative Medicine InstituteMonash UniversityCracow University of TechnologyThe Ohio State UniversityIstituto Nazionale di Fisica Nucleare, Sezione di CagliariWuhan UniversityTsinghua UniversityUniversitat de BarcelonaIstituto Nazionale di Fisica Nucleare, Sezione di MilanoEötvös Loránd UniversityInstitute for Nuclear ResearchHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicIstituto Nazionale di Fisica Nucleare, Sezione di BariUniversity of CincinnatiHunan UniversityCentral China Normal UniversityUniversity of GroningenUniversity College DublinSouth China Normal UniversityIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaRutherford Appleton LaboratoryUniversitat de ValènciaUniversity of Maryland, College ParkKharkiv Institute of Physics and TechnologyState Key Laboratory of Nuclear Physics and TechnologyUniversity of FreiburgNational Centre for Nuclear ResearchRWTH Aachen UniversityUniversidad Nacional de ColombiaUniversity of BirminghamCommissariat à l'Énergie Atomique et aux Énergies AlternativesInstituto de Física CorpuscularLaboratoire de Physique Nucléaire et de Hautes ÉnergiesCEA Paris-SaclayLos Alamos National Security (United States)Laboratoire de Physique des 2 Infinis Irène Joliot-CurieMax Planck Institute for Nuclear PhysicsInstitut de Recherche sur les Lois Fondamentales de l'UniversÉcole Polytechnique Fédérale de LausanneHenan Normal UniversityLanzhou UniversityRuhr University BochumVilnius University

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Sujets associés

Quantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions ResearchNuclear physics research studies

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