Heavy axial-vector structures $bb\overline{c}\overline{c}$
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| Formato: | Preprint |
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2024
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| author | Agaev, S. S. Azizi, K. Sundu, H. |
| author_facet | Agaev, S. S. Azizi, K. Sundu, H. |
| contents | The fully heavy axial-vector diquark-antidiquark structures $bb\overline{c} \overline{c}$ are explored by means of the QCD sum rule method. They are modeled as four-quark mesons $T_{\mathrm{1}}$ and $T_{\mathrm{2}}$ composed of $b^{T}Cσ_{μν}γ_{5}b$, $\overline{c}γ^{ν}C \overline{c}^{T}$ and $b^{T}Cγ_{μ}γ_{5}b$, $\overline{c}C \overline{c}^{T}$ diquarks, respectively. The spectroscopic parameters of the tetraquarks $T_{\mathrm{1}}$ and $T_{\mathrm{2}}$ are determined in the context of the QCD two-point sum rule method. Results obtained for masses of these states $m_{1} =(12715\pm 86)~\mathrm{MeV}$ and $m_{2}=(13383\pm 92)~ \mathrm{MeV}$ are used to fix their strong decay channels. The full width $ Γ(T_{\mathrm{1}})$ of the diquark-antidiquark state $T_{\mathrm{1}}$ is estimated by considering the processes $T_{\mathrm{1}} \to B_{c}^{-}B_{c}^{\ast -}$ and $T_{\mathrm{1}} \to B_{c}^{\ast -}B_{c}^{\ast -} $. The decays to mesons $B_{c}^{-}B_{c}^{\ast -}$, $B_{c}^{-}(2S)B_{c}^{ \ast -}$ and $B_{c}^{\ast -}B_{c}^{\ast -}$ are employed to evaluate $Γ(T_{\mathrm{2}})$. Results obtained for the widths $Γ(T_{\mathrm{1} })=(44.3\pm 8.8)~\mathrm{MeV}$ and $Γ(T_{\mathrm{2}})=(82.5\pm 13.7)~ \mathrm{MeV}$ of these tetraquarks in conjunction with their masses are useful for future experimental studies of fully heavy resonances. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_05162 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Heavy axial-vector structures $bb\overline{c}\overline{c}$ Agaev, S. S. Azizi, K. Sundu, H. High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice The fully heavy axial-vector diquark-antidiquark structures $bb\overline{c} \overline{c}$ are explored by means of the QCD sum rule method. They are modeled as four-quark mesons $T_{\mathrm{1}}$ and $T_{\mathrm{2}}$ composed of $b^{T}Cσ_{μν}γ_{5}b$, $\overline{c}γ^{ν}C \overline{c}^{T}$ and $b^{T}Cγ_{μ}γ_{5}b$, $\overline{c}C \overline{c}^{T}$ diquarks, respectively. The spectroscopic parameters of the tetraquarks $T_{\mathrm{1}}$ and $T_{\mathrm{2}}$ are determined in the context of the QCD two-point sum rule method. Results obtained for masses of these states $m_{1} =(12715\pm 86)~\mathrm{MeV}$ and $m_{2}=(13383\pm 92)~ \mathrm{MeV}$ are used to fix their strong decay channels. The full width $ Γ(T_{\mathrm{1}})$ of the diquark-antidiquark state $T_{\mathrm{1}}$ is estimated by considering the processes $T_{\mathrm{1}} \to B_{c}^{-}B_{c}^{\ast -}$ and $T_{\mathrm{1}} \to B_{c}^{\ast -}B_{c}^{\ast -} $. The decays to mesons $B_{c}^{-}B_{c}^{\ast -}$, $B_{c}^{-}(2S)B_{c}^{ \ast -}$ and $B_{c}^{\ast -}B_{c}^{\ast -}$ are employed to evaluate $Γ(T_{\mathrm{2}})$. Results obtained for the widths $Γ(T_{\mathrm{1} })=(44.3\pm 8.8)~\mathrm{MeV}$ and $Γ(T_{\mathrm{2}})=(82.5\pm 13.7)~ \mathrm{MeV}$ of these tetraquarks in conjunction with their masses are useful for future experimental studies of fully heavy resonances. |
| title | Heavy axial-vector structures $bb\overline{c}\overline{c}$ |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2401.05162 |