Chromopolarizability of charm-beauty quarkonium from $B_c(2S) \rightarrow B_cππ$ transition
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866916665437978624 |
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| author | Chen, Yun-Hua Li, Zi-Wei |
| author_facet | Chen, Yun-Hua Li, Zi-Wei |
| contents | The chromopolarizability of a charm-beauty quarkonium characterizes its interaction with soft gluonic fields and can be probed through heavy quarkonium decays. Using the dispersion theory which considers the $ππ$ final state interaction model-independently, we analyze the transition $B_c(2S) \rightarrow B_cπ^+π^-$ and determine the chromopolarizability $α_{B_c(2S) B_c}=(0.66\pm 0.25)$ GeV$^{-3}$ and the parameter $κ=-0.02\pm 0.13$. Our results indicate that the transitional chromopolarizability of the $c\bar{b}$ state lies between the transitional chromopolarizabilities of the $c\bar{c}$ and $b\bar{b}$ states. These findings provide valuable insights into the interactions of charm-beauty quarkonium with light hadrons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_15415 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Chromopolarizability of charm-beauty quarkonium from $B_c(2S) \rightarrow B_cππ$ transition Chen, Yun-Hua Li, Zi-Wei High Energy Physics - Phenomenology The chromopolarizability of a charm-beauty quarkonium characterizes its interaction with soft gluonic fields and can be probed through heavy quarkonium decays. Using the dispersion theory which considers the $ππ$ final state interaction model-independently, we analyze the transition $B_c(2S) \rightarrow B_cπ^+π^-$ and determine the chromopolarizability $α_{B_c(2S) B_c}=(0.66\pm 0.25)$ GeV$^{-3}$ and the parameter $κ=-0.02\pm 0.13$. Our results indicate that the transitional chromopolarizability of the $c\bar{b}$ state lies between the transitional chromopolarizabilities of the $c\bar{c}$ and $b\bar{b}$ states. These findings provide valuable insights into the interactions of charm-beauty quarkonium with light hadrons. |
| title | Chromopolarizability of charm-beauty quarkonium from $B_c(2S) \rightarrow B_cππ$ transition |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2410.15415 |