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Accès ouvert déclaré 2024 article

First Observation of a Three-Resonance Structure in e+e−→Nonopen Charm Hadrons

4Citations signalées — pas une note de qualité
91Institutions déclarées
17Pays d’affiliation déclarés

Résumé fourni par la source

We report the measurement of the inclusive cross sections for e^{+}e^{-}→nOCH (where nOCH denotes non-open charm hadrons) with improved precision at center-of-mass (c.m.) energies from 3.645 to 3.871 GeV. We observe three resonances: R(3760), R(3780), and R(3810) with significances of 8.1σ, 13.7σ, and 8.8σ, respectively. The R(3810) state is observed for the first time, while the R(3760) and R(3780) states are observed for the first time in the nOCH cross sections. Two sets of resonance parameters describe the energy-dependent line shape of the cross sections well. In set I [set II], the R(3810) state has mass (3805.7±1.1±2.7) [(3805.7±1.1±2.7)] MeV/c^{2}, total width (11.6±2.9±1.9) [(11.5±2.8±1.9)] MeV, and an electronic width multiplied by the nOCH decay branching fraction of (10.9±3.8±2.5) [(11.0±3.4±2.5)] eV. In addition, we measure the branching fractions B[R(3760)→nOCH]=(25.2±16.1±30.4)%[(6.4±4.8±7.7)%] and B[R(3780)→nOCH]=(12.3±6.6±8.3)%[(10.4±4.8±7.0)%] for the first time. The R(3760) state can be interpreted as an open-charm (OC) molecular state, but containing a simple four-quark state component. The R(3810) state can be interpreted as a hadrocharmonium state.

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Contrôle bibliographique ouvert

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

Titre Crossref
First Observation of a Three-Resonance Structure in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:mtext>Nonopen</mml:mtext></mml:mrow></mml:math> Charm Hadrons
Date Crossref
09/05/2024
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

Institute of High Energy PhysicsSiberian Branch of the Russian Academy of SciencesBudker Institute of Nuclear PhysicsUppsala UniversityZhengzhou UniversityJohannes Gutenberg University MainzUniversity of TurinLiaoning Normal UniversityUniversity of Science and Technology of ChinaSoutheast UniversityJoint Institute for Nuclear ResearchIstituto Nazionale di Fisica Nucleare, Sezione di FerraraPeking UniversityNational Centre for Nuclear ResearchInstitute of Physics and TechnologyIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiCarnegie Mellon UniversityUniversity of MünsterWuhan UniversityUniversity of Chinese Academy of SciencesIstinye UniversityXinyang Normal UniversityNankai UniversitySoochow UniversityNanjing UniversityTsinghua UniversityInstitute of Modern PhysicsJilin UniversityJilin Medical UniversityHunan UniversityChung-Ang UniversityRuhr University BochumShandong UniversityYunnan UniversityHelmholtz Institute MainzUniversity of JinanLiaoning UniversityUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro”Piedmont UniversitySun Yat-sen UniversityUniversity of OxfordUniversity of FerraraUniversity of ManchesterGSI Helmholtz Centre for Heavy Ion ResearchGuangxi UniversityHenan University of TechnologyNanjing Normal UniversityShandong Normal UniversityFudan UniversityHenan Normal UniversityUniversity of Hawaiʻi at MānoaUniversity of Hawaii SystemSuranaree University of TechnologySouth China Normal UniversityUniversity of the PunjabIndiana University BloomingtonIndiana UniversityHangzhou Normal UniversityHuangshan UniversityUniversity of TarapacáUniversity of GroningenChina University of GeosciencesJustus-Liebig-Universität GießenIndian Institute of Technology MadrasQufu Normal UniversityBeijing Institute of Petrochemical TechnologyLanzhou UniversitySichuan UniversityGuangxi Normal UniversityShanxi UniversityCentral China Normal UniversityShanxi University of Traditional Chinese MedicineHenan University of Science and TechnologyUniversity of South ChinaCentral South UniversityZhejiang UniversityIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaCOMSATS University IslamabadUniversity of PerugiaHunan Normal UniversityShanxi Normal UniversityNear East UniversityNorth China Electric Power UniversityHebei UniversityUniversity of Science and Technology LiaoningInner Mongolia UniversityYantai UniversityShanghai Jiao Tong UniversityChina Center of Advanced Science and TechnologyBeihang UniversityHenan University

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Quantum Chromodynamics and Particle InteractionsParticle physics theoretical and experimental studiesHigh-Energy Particle Collisions Research

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