Strong Decays of the Light Exotic $0^{+-}$ and $2^{+-}$ Hybrid Mesons
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arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866915822738341888 |
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| author | Farina, Christian Swanson, Eric S. |
| author_facet | Farina, Christian Swanson, Eric S. |
| contents | A model of hybrid meson structure based on the QCD Hamiltonian in Coulomb gauge and the use of a single constituent quasigluon is applied compute hadronic decays of mesons with exotic quantum numbers, $0^{+-}$ and $2^{+-}$. These correspond to hybrid mesons in which the gluon couples to a $q\bar{q}$ pair in an $P$-wave and can therefore be identified as orbital excitations of the exotic $1^{-+}$ state. Interestingly, we find $0^{+-}$ states to be narrow, contrary to what was found by previous calculations. This is primarily due to the suppression of the decay mode $0^{+-}\rightarrow 2^1S_0+1^1S_0$, which is unique to our model. The $2^{+-}$ states are found to be narrow, as expected. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_00459 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Strong Decays of the Light Exotic $0^{+-}$ and $2^{+-}$ Hybrid Mesons Farina, Christian Swanson, Eric S. High Energy Physics - Phenomenology A model of hybrid meson structure based on the QCD Hamiltonian in Coulomb gauge and the use of a single constituent quasigluon is applied compute hadronic decays of mesons with exotic quantum numbers, $0^{+-}$ and $2^{+-}$. These correspond to hybrid mesons in which the gluon couples to a $q\bar{q}$ pair in an $P$-wave and can therefore be identified as orbital excitations of the exotic $1^{-+}$ state. Interestingly, we find $0^{+-}$ states to be narrow, contrary to what was found by previous calculations. This is primarily due to the suppression of the decay mode $0^{+-}\rightarrow 2^1S_0+1^1S_0$, which is unique to our model. The $2^{+-}$ states are found to be narrow, as expected. |
| title | Strong Decays of the Light Exotic $0^{+-}$ and $2^{+-}$ Hybrid Mesons |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2512.00459 |