Production of $X_b$ via $\Upsilon(5S, 6S)$ radiative decays
| Autor: | Wang, Xiao-Yun, Cai, Zu-Xin, Li, Gang, Liu, Shi-Dong, An, Chun-Sheng, Xie, Ju-Jun |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1140/epjc/s10052-023-11333-0 |
| Popis: | We investigate the production of $X_b$ in the process $\Upsilon(5S,6S)\to \gamma X_b$, where $X_b$ is assumed to be a $B {\bar B}^*$ molecular state. Two kinds of meson loops of $B^{(*)}{\bar B}^{(*)}$ and $B_1^{\prime}{\bar B}^{(*)}$ were considered. To explore the rescattering mechanism, we calculated the relevant branching ratios using the effective Lagrangian based on the heavy quark symmetry. The branching ratios for the $\Upsilon(5S\,,6S) \to \gamma X_b$ were found to be at the orders of $10^{-7} \sim 10^{-6}$. Such sizeable branching ratios might be accessible at BelleII, which would provide important clues to the inner structures of the exotic state $X_b$. Comment: 9 pages, 2 figures, comments are welcome |
| Databáze: | arXiv |
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