Revisiting hidden-charm pentaquarks from QCD sum rules

2017/11/30 by Jia-Bing Xiang, Hua-Xing Chen, Wei Chen +5 · 1 citation
Physics and Astronomy · #Charm (quantum number) #High-Energy Particle Collisions Research #Mixing (physics) #Parametrization (atmospheric modeling) #Particle physics #Particle physics theoretical and experimental studies #Pentaquark #Physics #QCD sum rules #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quark #hep-ex #hep-ph

paper · pdf · doi:10.1088/1674-1137/43/3/034104

published as Chin.Phys. C43 (2019) no.3, 034104 · 11 pages, 5 figures, published in CPC

openalex publication_date 2019/03/01 · arxiv created 2019/03/18 · arxiv updated 2019/03/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We revisit hidden-charm pentaquark states and using the method of QCD sum rules by requiring the pole contribution to be greater than or equal to 30% in order to better that the one-pole parametrization is valid. We find two mixing currents, and our results suggest that and can be identified as hidden-charm pentaquark states having and , respectively. However, there still exist other possible spin-parity assignments, such as and , which must be clarified in further theoretical and experimental studies.

Citations

• ΣcD¯andΛcD¯states in a chiral quark model
• Masses, decays and mixings of gluonia in QCD
• Observation of J/ψp resonances consistent with pentaquark states in Λ_b⁰→ J/ψK^-p decays
• Coupled QCD sum rules for positive and negative-parity nucleons
• Negative-parity nucleon resonance in the QCD sum rule
• The hidden-charm pentaquark and tetraquark states
• Pentaquark states in a diquark–triquark model
• A review of the open charm and open bottom systems
• Exotics: Heavy Pentaquarks and Tetraquarks
• Hadronic molecules
• Review of Multibody Charm Analyses

Cited by

• Unveiling the electromagnetic structure and intrinsic dynamics of spin-(3)/(2) hidden-charm pentaquarks: A comprehensive QCD analysis