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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/2507.01277 |
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| _version_ | 1866918079190007808 |
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| author | Chen, Cheng Yan, Bing Long, Bing-Wei Xie, Ju-Jun |
| author_facet | Chen, Cheng Yan, Bing Long, Bing-Wei Xie, Ju-Jun |
| contents | We investigate the $e^+e^-\to Σ\barΣ$ and $e^+e^-\to Λ\barΣ^0$ reactions within the extended vector meson dominance model. In addition to the ground state mesons $ρ$ and $ω$, we consider the contributions of the excited states $ρ(3D)$, $ω(3D)$, $ϕ(3D)$, and $ρ(6D)$. It is found that the current experimental data on the $Σ$ electromagnetic form factors in timelike region can be well reproduced. And the $ϕ(3D)$ resonance is essential to the near threshold enhancement of the cross section for the $e^+e^-\to Σ\barΣ$ reaction. Furthermore, in the $e^+e^-\to Λ\barΣ^0$ reaction, the $ρ(3D)$ is important to get a good fit for the experimental results. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_01277 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The electromagnetic form factors of $Σ$ and $Σ^0 \to Λ$ transition in the timelike region Chen, Cheng Yan, Bing Long, Bing-Wei Xie, Ju-Jun High Energy Physics - Phenomenology We investigate the $e^+e^-\to Σ\barΣ$ and $e^+e^-\to Λ\barΣ^0$ reactions within the extended vector meson dominance model. In addition to the ground state mesons $ρ$ and $ω$, we consider the contributions of the excited states $ρ(3D)$, $ω(3D)$, $ϕ(3D)$, and $ρ(6D)$. It is found that the current experimental data on the $Σ$ electromagnetic form factors in timelike region can be well reproduced. And the $ϕ(3D)$ resonance is essential to the near threshold enhancement of the cross section for the $e^+e^-\to Σ\barΣ$ reaction. Furthermore, in the $e^+e^-\to Λ\barΣ^0$ reaction, the $ρ(3D)$ is important to get a good fit for the experimental results. |
| title | The electromagnetic form factors of $Σ$ and $Σ^0 \to Λ$ transition in the timelike region |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2507.01277 |