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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.18569 |
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| _version_ | 1866918525456613376 |
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| author | Lu, Duo-Duo Jiang, Shao-Zhou |
| author_facet | Lu, Duo-Duo Jiang, Shao-Zhou |
| contents | Assuming $X(6900)$ is a tetraquark state, the decay width of $X(6900)\to 2J/ψ$ is calculated in a covariant quark model, with the diquark-antidiquark $[cc][\bar{c}\bar{c}]$ picture. Two possible structures, vector-vector and axial-vector--axial-vector coupling, are investigated. The result indicates that the axial-vector--axial-vector coupling is consistent with the experiments. Additionally, as another application of the covariant quark model, the decay width of $X(6900)\to 2η_c$ is predicted to be $66\sim88$ keV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_18569 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Investigating the internal structure of $X(6900)$ in the $2J/ψ$ decay channel Lu, Duo-Duo Jiang, Shao-Zhou High Energy Physics - Phenomenology Assuming $X(6900)$ is a tetraquark state, the decay width of $X(6900)\to 2J/ψ$ is calculated in a covariant quark model, with the diquark-antidiquark $[cc][\bar{c}\bar{c}]$ picture. Two possible structures, vector-vector and axial-vector--axial-vector coupling, are investigated. The result indicates that the axial-vector--axial-vector coupling is consistent with the experiments. Additionally, as another application of the covariant quark model, the decay width of $X(6900)\to 2η_c$ is predicted to be $66\sim88$ keV. |
| title | Investigating the internal structure of $X(6900)$ in the $2J/ψ$ decay channel |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2512.18569 |