Further study of cccc system within a chiral quark model

被引：0

作者：

Wu, Yuheng ^{[1
,2
]}

Liu, Xuejie ^{[3
]}

Ping, Jialun ^{[2
]}

Huang, Hongxia ^{[2
]}

Tan, Yue ^{[1
]}

机构：

[1] Yancheng Inst Technol, Dept Phys, Yancheng 224000, Peoples R China

[2] Nanjing Normal Univ, Dept Phys, Nanjing 210023, Peoples R China

[3] Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL C | 2025年 / 85卷 / 02期

基金：

中国国家自然科学基金;

关键词：

TETRAQUARK STATES; DIQUARK;

D O I：

10.1140/epjc/s10052-025-13822-w

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Inspired by the recent ATLAS and CMS experiments on the invariant mass spectrum of J/psi J/psi, we systematically study the cccc system of JP = 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 resonances: R(6923), R(6996), R(7060) and R(7159). R(6923) and R(7159) are experimental candidates for X(6900) and X(7200), whose main decay channel is J/psi J/psi. It is important to note that the another major decay channel of R(7159) is chi c0 chi c0, and the chi c0 chi c0 is also the main decay channel of R(6996), R(7060). Therefore, we propose to search experimentally for these two predicted resonances in the chi c0 chi c0 invariant mass spectrum.

引用

页数：12