Charmful two-body $Ω_b$ decays in the light-front quark model
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909606184222720 |
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| author | Wang, Yan-Li Hsiao, Yu-Kuo Wang, Kai-Lei Lih, Chong-Chung |
| author_facet | Wang, Yan-Li Hsiao, Yu-Kuo Wang, Kai-Lei Lih, Chong-Chung |
| contents | We investigate the singly and doubly charmful two-body $Ω_b^-$ decays using the light-front quark model. Our findings reveal that most branching fractions calculated in this study, such as ${\cal B}(Ω_b^-\toΞ^- D^0,Ξ^{-}D^{*0})$, can be ten to one hundred times larger than those reported in previous calculations. Additionally, we interpret the ratio ${\cal B}(Ω_b^-\toΩ^- J/ψ)/{\cal B}(Ω_b^-\toΩ^- η_c)\simeq 3.4$ within the helicity framework. While the decay involving external $W$-boson emission appears to be suppressed by the $b\to u \bar c s$ weak transition, it still yields a significant branching fraction. For instance, ${\cal B}(Ω_b^-\toΞ^0 D_s^{*-})=(5.9-14.2)\times 10^{-5}$, ${\cal B}(Ω_b^-\toΞ^{*0}D_s^{-})=(6.7-12.1)\times10^{-5}$, and ${\cal B}(Ω_b^-\toΞ^{*0}D_s^{*-})=(12.8-26.7)\times10^{-5}$, with values reaching as large as $10^{-4}$. These predictions are well within the experimental reach of LHCb. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2412_11584 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Charmful two-body $Ω_b$ decays in the light-front quark model Wang, Yan-Li Hsiao, Yu-Kuo Wang, Kai-Lei Lih, Chong-Chung High Energy Physics - Phenomenology High Energy Physics - Experiment We investigate the singly and doubly charmful two-body $Ω_b^-$ decays using the light-front quark model. Our findings reveal that most branching fractions calculated in this study, such as ${\cal B}(Ω_b^-\toΞ^- D^0,Ξ^{-}D^{*0})$, can be ten to one hundred times larger than those reported in previous calculations. Additionally, we interpret the ratio ${\cal B}(Ω_b^-\toΩ^- J/ψ)/{\cal B}(Ω_b^-\toΩ^- η_c)\simeq 3.4$ within the helicity framework. While the decay involving external $W$-boson emission appears to be suppressed by the $b\to u \bar c s$ weak transition, it still yields a significant branching fraction. For instance, ${\cal B}(Ω_b^-\toΞ^0 D_s^{*-})=(5.9-14.2)\times 10^{-5}$, ${\cal B}(Ω_b^-\toΞ^{*0}D_s^{-})=(6.7-12.1)\times10^{-5}$, and ${\cal B}(Ω_b^-\toΞ^{*0}D_s^{*-})=(12.8-26.7)\times10^{-5}$, with values reaching as large as $10^{-4}$. These predictions are well within the experimental reach of LHCb. |
| title | Charmful two-body $Ω_b$ decays in the light-front quark model |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2412.11584 |