Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.18569 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of 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.