Further study of cccc system within a chiral quark model

2024/03/15 by Yuheng Wu, Wu, Yuheng, Xuejie Liu +7 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2403.10375

openalex publication_date 2024/03/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Inspired by the recent Altas and CMS experiments on the invariant mass spectrum of J/ψJ/ψ, we systematically study the cccc system of J^P=0⁺. In the framework of chiral quark model, we have carried out bound-state calculation and resonance-state calculation respectively by using Real-scaling method. The results of bound-state calculation show that there are no bound states in the cccc with 0⁺ system. The resonance-state calculation shows that there are four possible stable resonances: R(6920), R(7000), R(7080) and R(7160). R(6920) and R(7160) are experimental candidates for X(6900) and X(7200), whose main decay channel is J/ψJ/ψ. It is important to note that the another major decay channel of R(7160) is χ_c0 χ_c0 , and the χ_c0 χ_c0 is also the main decay channel of R(7000), R(7080). Therefore, we propose to search experimentally for these two predicted resonances in the χ_c0 χ_c0 invariant mass spectrum.

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• QCD sum rule predictions on gluonic tetraquark states with J^PC=0^+-,0^-- and 1^{± ±}

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