Exploring the role of higher $ω$ meson states in the $e^+ e^-\rightarrow b_1(1235) π$ process
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866917070393835520 |
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| author | Wu, Zhao-Yang Bai, Zi-Yue Wang, Li-Ming |
| author_facet | Wu, Zhao-Yang Bai, Zi-Yue Wang, Li-Ming |
| contents | The properties of light vector mesons near 2.2 GeV remain poorly understood, impeding progress in mapping the higher-lying hadronic spectrum. Utilizing the newly released BESIII data on the Born cross sections for the process of $e^+ e^- \rightarrow b_1(1235) π$, we conduct a combined analysis incorporating theoretical predictions for the mass spectrum and decay properties of $ω$-meson family. Our fit demonstrates that the enhancement structure near 2.2 GeV originates not from a single resonance, but from the significant interference between the $ω(4S)$ and $ω(3D)$ states, which have comparable contributions. This interpretation resolves the apparent discrepancy in the resonance parameters and yields values consistent with theoretical expectations. Our work provides a key interpretation of the vector enhancement structure and establishes a vital framework for identifying higher radial and orbital excitations in the $ω$ meson family, thereby advancing the mapping of the light-hadron spectrum. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_06664 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Exploring the role of higher $ω$ meson states in the $e^+ e^-\rightarrow b_1(1235) π$ process Wu, Zhao-Yang Bai, Zi-Yue Wang, Li-Ming High Energy Physics - Phenomenology The properties of light vector mesons near 2.2 GeV remain poorly understood, impeding progress in mapping the higher-lying hadronic spectrum. Utilizing the newly released BESIII data on the Born cross sections for the process of $e^+ e^- \rightarrow b_1(1235) π$, we conduct a combined analysis incorporating theoretical predictions for the mass spectrum and decay properties of $ω$-meson family. Our fit demonstrates that the enhancement structure near 2.2 GeV originates not from a single resonance, but from the significant interference between the $ω(4S)$ and $ω(3D)$ states, which have comparable contributions. This interpretation resolves the apparent discrepancy in the resonance parameters and yields values consistent with theoretical expectations. Our work provides a key interpretation of the vector enhancement structure and establishes a vital framework for identifying higher radial and orbital excitations in the $ω$ meson family, thereby advancing the mapping of the light-hadron spectrum. |
| title | Exploring the role of higher $ω$ meson states in the $e^+ e^-\rightarrow b_1(1235) π$ process |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2511.06664 |