Investigating hybrid mesons with $0^{+-}$ and $2^{+-}$ exotic quantum numbers
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| Format: | Preprint |
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2025
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| _version_ | 1866915405334839296 |
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| author | Chen, Bing Liu, Xiang |
| author_facet | Chen, Bing Liu, Xiang |
| contents | Hybrid mesons occupy a unique position in the hadronic spectrum, offering a valuable insight into the non-perturbative nature of the glue field. Hybrid states with exotic $J^{PC}$ quantum numbers, such as the $1^{-+}$, $0^{+-}$ and $2^{+-}$, cannot mix with conventional $q\bar{q}$ mesons, making them critical for establishing the full spectrum of hybrid mesons. In this work, we investigate the masses and the strong decays of $0^{+-}$ and $2^{+-}$ hybrid mesons, which could be regarded as the first orbitally excited states of the $π_1(1600)$ and $η_1(1855)$ mesons. We develop a constituent gluon model and apply it to study the mass spectra and decay modes of these exotic states. Our results suggest that experiment may searched for these $0^{+-}$ and $2^{+-}$ hybrid mesons in the mass region between 2.0 GeV and 2.4 GeV. Additionally, we identify some key decay channels which should be targeted in future experiments. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2503_06116 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Investigating hybrid mesons with $0^{+-}$ and $2^{+-}$ exotic quantum numbers Chen, Bing Liu, Xiang High Energy Physics - Phenomenology Hybrid mesons occupy a unique position in the hadronic spectrum, offering a valuable insight into the non-perturbative nature of the glue field. Hybrid states with exotic $J^{PC}$ quantum numbers, such as the $1^{-+}$, $0^{+-}$ and $2^{+-}$, cannot mix with conventional $q\bar{q}$ mesons, making them critical for establishing the full spectrum of hybrid mesons. In this work, we investigate the masses and the strong decays of $0^{+-}$ and $2^{+-}$ hybrid mesons, which could be regarded as the first orbitally excited states of the $π_1(1600)$ and $η_1(1855)$ mesons. We develop a constituent gluon model and apply it to study the mass spectra and decay modes of these exotic states. Our results suggest that experiment may searched for these $0^{+-}$ and $2^{+-}$ hybrid mesons in the mass region between 2.0 GeV and 2.4 GeV. Additionally, we identify some key decay channels which should be targeted in future experiments. |
| title | Investigating hybrid mesons with $0^{+-}$ and $2^{+-}$ exotic quantum numbers |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2503.06116 |