Observation of a Narrow Pentaquark State, P c ( 4312 ) + , and of the Two-Peak Structure of the P c ( 4450 ) +
National Institute for Subatomic Physics · University of Zurich · +88 more institutions
Abstract
A narrow pentaquark state, P_{c}(4312)^{+}, decaying to J/ψp, is discovered with a statistical significance of 7.3σ in a data sample of Λ_{b}^{0}→J/ψpK^{-} decays, which is an order of magnitude larger than that previously analyzed by the LHCb Collaboration. The P_{c}(4450)^{+} pentaquark structure formerly reported by LHCb is confirmed and observed to consist of two narrow overlapping peaks, P_{c}(4440)^{+} and P_{c}(4457)^{+}, where the statistical significance of this two-peak interpretation is 5.4σ. The proximity of the Σ_{c}^{+}D[over ¯]^{0} and Σ_{c}^{+}D[over ¯]^{*0} thresholds to the observed narrow peaks suggests that they play an important role in the dynamics of these states.
Citation impact
- FWCI
- 158.05
- Percentile
- 100%
- References
- 52
Authors
871Topics & keywords
- Physics
- Computer science
Funding
- NSNational Science FoundationAward: CNRS/IN2P3
- AVAlexander von Humboldt-Stiftung
- KIKarlsruhe Institute of Technology
- CCERN
- INInstitutul National de Cercetare-Dezvoltare pentru Fizica si Inginerie Nucleara 'Horia Hulubei'
- LTLeverhulme Trust
- RSRoyal Society
- ECEuropean Commission
- DFDeutsche Forschungsgemeinschaft
- ANAgence Nationale de la Recherche
- SNSchweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- NNNational Natural Science Foundation of ChinaAward: IN2P3
- RFRussian Foundation for Basic Research
- CDCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
- BFBundesministerium für Bildung und Forschung
- CAChinese Academy of Sciences
- GDGeneralitat de Catalunya
- MOMinistry of Science and Technology of the People's Republic of China
- CNConsejo Nacional de Ciencia y TecnologíaAward: 222001
- NONederlandse Organisatie voor Wetenschappelijk Onderzoek
- MDMinisterio de Economía y Competitividad
- GVGeneralitat Valenciana
- MOMinistry of Education and Science of the Russian Federation
- CNConselho Nacional de Desenvolvimento Científico e Tecnológico
- MMax-Planck-Gesellschaft
- NCNarodowe Centrum Nauki
- MEMinisterstwo Edukacji i Nauki
- FCFundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- NANational Academy of Sciences of Ukraine
- CNCentre National de la Recherche ScientifiqueAward: CNRS/IN2P3
- FDFinanciadora de Estudos e Projetos
- MOMinistry of Education and Research, Romania
- RSRussian Science Foundation
- CDConsellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia
- RARégion Auvergne-Rhône-Alpes
- RPRecruitment Program of Global Experts
- SAScience and Technology Facilities CouncilAwards: ST/S000879/1, ST/N000234/1, 1796908, ST/S000909/1, LHCb, ST/N000331/1, ST/S000801/1, ST/N000250/1, ST/S000712/1, IN2P3, 2021483, ST/J004332/1, GRIDPP, ST/K003410/1, ST/N000447/1, ST/L003163/1, ST/N000242/1
- DEDeutsches Elektronen-Synchrotron
- INInstituto Nazionale di Fisica Nucleare
- SFStaatssekretariat für Bildung, Forschung und Innovation
- INInstitut National de Physique Nucléaire et de Physique des ParticulesAward: CNRS/IN2P3
- LDLaboratory Directed Research and Development
- LALos Alamos National Laboratory
- HEH2020 European Research Council
- HMH2020 Marie Skłodowska-Curie Actions