Interpretation of recently discovered single bottom baryons in the relativistic flux tube model
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arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913413500764160 |
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| author | Jakhad, Pooja Oudichhya, Juhi Rai, Ajay Kumar |
| author_facet | Jakhad, Pooja Oudichhya, Juhi Rai, Ajay Kumar |
| contents | Following recent experimental progress in the study of bottom baryons, we systematically calculate the mass spectra of $Λ_{b}$, $Ξ_{b}$, $Σ_{b}$, $Ξ_{b}^{'}$, and $Ω_{b}$ baryons with a quark-diquark picture in the framework of a relativistic flux tube model with spin-dependent interactions in the j-j coupling scheme. Furthermore, we calculate the strong decay width of bottom baryons decaying into a bottom baryon and a light pseudoscalar meson. A good agreement is found between the calculated masses and the experimentally available masses of singly bottom baryons. %We interpret $Σ_{b}(6097)$ as a $1P(3/2^{-})$ state, $Ξ_{b}(6100)$ as $1P(1/2^{-})$ state of $Ξ_{b}$ baryon, $Ξ_{b}(6227)$ as a $1P(1/2^{-})$ or $1P(3/2^{-})$ state of $Ξ_{b}'$ baryon, $Ξ_{b}(6327)$ as a $1P(3/2^{-})$ state of $Ξ_{b}'$ baryon, and $Ξ_{b}(6333)$ as a $1P(3/2^{-})$ state of $Ξ_{b}'$ baryon. By analysing both mass spectra and strong decay widths, we interpret $Σ_{b}(6097)$ as a $1P(3/2^{-})$ state and $Ξ_{b}(6100)$ as a $1P(1/2^{-})$ state of $Ξ_{b}$ baryon. The $Ξ_{b}(6227)$ is identified to be an orbital excitation $1P$ of the $Ξ_{b}^{'}$ baryon with $J^{P}=3/2^{-}$. Further, we determine $Ξ_{b}(6327)$ and $Ξ_{b}(6333)$ as a $1P(3/2^{-})$ state and $1P(5/2^{-})$ state, respectively, of $Ξ_{b}^{'}$ baryon. From the obtained mass spectra, we construct the Regge trajectories in the $(J,M^{2})$ plane, which are found to be essentially linear, parallel, and equidistant. Our predictions for higher orbital and radial excited states can help experimentalists identify missing excited states of singly bottom baryons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_01655 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Interpretation of recently discovered single bottom baryons in the relativistic flux tube model Jakhad, Pooja Oudichhya, Juhi Rai, Ajay Kumar High Energy Physics - Phenomenology Following recent experimental progress in the study of bottom baryons, we systematically calculate the mass spectra of $Λ_{b}$, $Ξ_{b}$, $Σ_{b}$, $Ξ_{b}^{'}$, and $Ω_{b}$ baryons with a quark-diquark picture in the framework of a relativistic flux tube model with spin-dependent interactions in the j-j coupling scheme. Furthermore, we calculate the strong decay width of bottom baryons decaying into a bottom baryon and a light pseudoscalar meson. A good agreement is found between the calculated masses and the experimentally available masses of singly bottom baryons. %We interpret $Σ_{b}(6097)$ as a $1P(3/2^{-})$ state, $Ξ_{b}(6100)$ as $1P(1/2^{-})$ state of $Ξ_{b}$ baryon, $Ξ_{b}(6227)$ as a $1P(1/2^{-})$ or $1P(3/2^{-})$ state of $Ξ_{b}'$ baryon, $Ξ_{b}(6327)$ as a $1P(3/2^{-})$ state of $Ξ_{b}'$ baryon, and $Ξ_{b}(6333)$ as a $1P(3/2^{-})$ state of $Ξ_{b}'$ baryon. By analysing both mass spectra and strong decay widths, we interpret $Σ_{b}(6097)$ as a $1P(3/2^{-})$ state and $Ξ_{b}(6100)$ as a $1P(1/2^{-})$ state of $Ξ_{b}$ baryon. The $Ξ_{b}(6227)$ is identified to be an orbital excitation $1P$ of the $Ξ_{b}^{'}$ baryon with $J^{P}=3/2^{-}$. Further, we determine $Ξ_{b}(6327)$ and $Ξ_{b}(6333)$ as a $1P(3/2^{-})$ state and $1P(5/2^{-})$ state, respectively, of $Ξ_{b}^{'}$ baryon. From the obtained mass spectra, we construct the Regge trajectories in the $(J,M^{2})$ plane, which are found to be essentially linear, parallel, and equidistant. Our predictions for higher orbital and radial excited states can help experimentalists identify missing excited states of singly bottom baryons. |
| title | Interpretation of recently discovered single bottom baryons in the relativistic flux tube model |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2407.01655 |