Decays of fully beauty scalar tetraquarks to $B_{q}\overline{B}_{q}$ and $B_{q}^{\ast}\overline{B}_{q}^{\ast}$ mesons
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| Formato: | Preprint |
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2023
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| _version_ | 1866929196105728000 |
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| author | Agaev, S. S. Azizi, K. Barsbay, B. Sundu, H. |
| author_facet | Agaev, S. S. Azizi, K. Barsbay, B. Sundu, H. |
| contents | Decays of the fully beauty four-quark structures $X_{\mathrm{4b}}$ and $T_{ \mathrm{4b}}$ to $B$ meson pairs are investigated in the framework of QCD three-point sum rule method. We model the scalar exotic mesons $X_{\mathrm{4b }}$ and $T_{\mathrm{4b}}$ as diquark-antidiquark systems composed of the axial-vector and pseudoscalar diquarks, respectively. The masses $m=(18540 \pm 50)~\mathrm{MeV}$ and $\widetilde{m}=(18858 \pm 50)~\mathrm{MeV}$ of these compounds calculated in our previous articles, fix possible decay channels of these particles. In the present work, we consider their decays to $B_{q}\overline{B}_{q}$ and $B_{q}^{\ast }\overline{B}_{q}^{\ast } (q=u,d,s,c)$ mesons. In the case of $X_{\mathrm{4b}}$ the mass of which is below the $2η_{b}$ threshold, these channels determine essential part of its full width $Γ_{\mathrm{4b}}$. The tetraquark $T_{\mathrm{4b}}$ can decay to the pair $η_{b}η_{b}$, therefore partial widths of processes with $B (B^{\ast})$ mesons in the final state permit us to refine our estimate for the full width of this particle. The predictions $Γ_{ \mathrm{4b}}=(9.6\pm 1.1)~\mathrm{MeV}$ and $\widetilde{Γ}_{\mathrm{4b} }^{\mathrm{Full}}=(144 \pm 29)~\mathrm{MeV}$ obtained in this article can be used in future experimental investigations of four $b$-quark mesons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_10384 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Decays of fully beauty scalar tetraquarks to $B_{q}\overline{B}_{q}$ and $B_{q}^{\ast}\overline{B}_{q}^{\ast}$ mesons Agaev, S. S. Azizi, K. Barsbay, B. Sundu, H. High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice Decays of the fully beauty four-quark structures $X_{\mathrm{4b}}$ and $T_{ \mathrm{4b}}$ to $B$ meson pairs are investigated in the framework of QCD three-point sum rule method. We model the scalar exotic mesons $X_{\mathrm{4b }}$ and $T_{\mathrm{4b}}$ as diquark-antidiquark systems composed of the axial-vector and pseudoscalar diquarks, respectively. The masses $m=(18540 \pm 50)~\mathrm{MeV}$ and $\widetilde{m}=(18858 \pm 50)~\mathrm{MeV}$ of these compounds calculated in our previous articles, fix possible decay channels of these particles. In the present work, we consider their decays to $B_{q}\overline{B}_{q}$ and $B_{q}^{\ast }\overline{B}_{q}^{\ast } (q=u,d,s,c)$ mesons. In the case of $X_{\mathrm{4b}}$ the mass of which is below the $2η_{b}$ threshold, these channels determine essential part of its full width $Γ_{\mathrm{4b}}$. The tetraquark $T_{\mathrm{4b}}$ can decay to the pair $η_{b}η_{b}$, therefore partial widths of processes with $B (B^{\ast})$ mesons in the final state permit us to refine our estimate for the full width of this particle. The predictions $Γ_{ \mathrm{4b}}=(9.6\pm 1.1)~\mathrm{MeV}$ and $\widetilde{Γ}_{\mathrm{4b} }^{\mathrm{Full}}=(144 \pm 29)~\mathrm{MeV}$ obtained in this article can be used in future experimental investigations of four $b$-quark mesons. |
| title | Decays of fully beauty scalar tetraquarks to $B_{q}\overline{B}_{q}$ and $B_{q}^{\ast}\overline{B}_{q}^{\ast}$ mesons |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2310.10384 |