Radiative decay and axial-vector decay behaviors of octet pentaquark states
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866910605050380288 |
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| author | Lei, Ya-Ding Li, Hao-Song |
| author_facet | Lei, Ya-Ding Li, Hao-Song |
| contents | In this work, we systematically calculate transition magnetic moments, radiative decay widths, and axial-vector coupling constants of octet hidden-charm molecular pentaquark states with different flavor representations in constituent quark model. We discuss the relations between transition magnetic moments and decay widths for pentaquark states. For octet pentaquark states with the $8_{1f}$ and $8_{2f}$ flavor representations, decay widths of the processes $P_ψ|\frac{3}{2}^-\rangle_{(\frac{1}{2}^+\otimes1^-)}\to P_ψ|\frac{1}{2}^-\rangle_{(\frac{1}{2}^+\otimes0^-)}γ$ and $P_ψ|\frac{1}{2}^-\rangle_{(\frac{1}{2}^+\otimes1^-)}\to P_ψ|\frac{1}{2}^-\rangle_{(\frac{1}{2}^+\otimes0^-)}γ$ are quite close, decay widths of the $P_ψ|\frac{3}{2}^-\rangle_{(\frac{1}{2}^+\otimes1^-)}\to P_ψ|\frac{1}{2}^-\rangle_{(\frac{1}{2}^+\otimes1^-)}γ$ process are close to zero, and we notice that the axial-vector coupling constants of the pentaquark states are generally smaller than that of the nucleon. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2406_18857 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Radiative decay and axial-vector decay behaviors of octet pentaquark states Lei, Ya-Ding Li, Hao-Song High Energy Physics - Phenomenology In this work, we systematically calculate transition magnetic moments, radiative decay widths, and axial-vector coupling constants of octet hidden-charm molecular pentaquark states with different flavor representations in constituent quark model. We discuss the relations between transition magnetic moments and decay widths for pentaquark states. For octet pentaquark states with the $8_{1f}$ and $8_{2f}$ flavor representations, decay widths of the processes $P_ψ|\frac{3}{2}^-\rangle_{(\frac{1}{2}^+\otimes1^-)}\to P_ψ|\frac{1}{2}^-\rangle_{(\frac{1}{2}^+\otimes0^-)}γ$ and $P_ψ|\frac{1}{2}^-\rangle_{(\frac{1}{2}^+\otimes1^-)}\to P_ψ|\frac{1}{2}^-\rangle_{(\frac{1}{2}^+\otimes0^-)}γ$ are quite close, decay widths of the $P_ψ|\frac{3}{2}^-\rangle_{(\frac{1}{2}^+\otimes1^-)}\to P_ψ|\frac{1}{2}^-\rangle_{(\frac{1}{2}^+\otimes1^-)}γ$ process are close to zero, and we notice that the axial-vector coupling constants of the pentaquark states are generally smaller than that of the nucleon. |
| title | Radiative decay and axial-vector decay behaviors of octet pentaquark states |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2406.18857 |