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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2406.03289 |
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| _version_ | 1866910473206628352 |
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| author | Britto, André L. M. Abreu, Luciano M. |
| author_facet | Britto, André L. M. Abreu, Luciano M. |
| contents | Motivated by recent theoretical predictions about the existence of a $ B \bar{B}$ bound state (also denoted as $ X(10550) $), in this work we estimate the production of the $S$-wave $ B^+ B^-$ molecule via $Υ(4S)$ radiative decays. In particular, we make use of effective Lagrangian approach and the compositeness condition to calculate the $ X(10550) $ production rate via $Υ(4S)\rightarrow γX(10550)$ decays employing triangle diagrams. Our results show that the partial decay width of this reaction is of the order of $0.5 - 192 \ \keV $ for a respective binding energy of $1 - 100 $ MeV, corresponding to a branching fraction of $ 10^{-5} - 10^{-3}$. These findings suggest that the existence of the $ X(10550) $ might be checked via the analysis of the mentioned decay in present and future experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_03289 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Production of $ B \bar{B}$ bound state via $Υ(4S)$ radiative decays Britto, André L. M. Abreu, Luciano M. High Energy Physics - Phenomenology Motivated by recent theoretical predictions about the existence of a $ B \bar{B}$ bound state (also denoted as $ X(10550) $), in this work we estimate the production of the $S$-wave $ B^+ B^-$ molecule via $Υ(4S)$ radiative decays. In particular, we make use of effective Lagrangian approach and the compositeness condition to calculate the $ X(10550) $ production rate via $Υ(4S)\rightarrow γX(10550)$ decays employing triangle diagrams. Our results show that the partial decay width of this reaction is of the order of $0.5 - 192 \ \keV $ for a respective binding energy of $1 - 100 $ MeV, corresponding to a branching fraction of $ 10^{-5} - 10^{-3}$. These findings suggest that the existence of the $ X(10550) $ might be checked via the analysis of the mentioned decay in present and future experiments. |
| title | Production of $ B \bar{B}$ bound state via $Υ(4S)$ radiative decays |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2406.03289 |