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| Main Authors: | , , , |
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| Format: | Preprint |
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2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2605.21120 |
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| _version_ | 1866910240615694336 |
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| author | Wan, Bing-Dong Zhang, Jun-Hao Zhang, Yan Yuan, Ming-Yang |
| author_facet | Wan, Bing-Dong Zhang, Jun-Hao Zhang, Yan Yuan, Ming-Yang |
| contents | Within the framework of QCD sum rules, we investigate hidden-heavy tetraquark states with the exotic quantum number $J^{PC}=0^{--}$ in color-octet configurations, namely $[Q\bar q]_{8_c}\otimes[q\bar Q]_{8_c}$ and $[Q\bar Q]_{8_c}\otimes[\bar q q]_{8_c}$ with $Q=c,b$. Since the $0^{--}$ quantum number cannot be realized by conventional $q\bar q$ mesons, the observation of such a state would provide a particularly clean signal for exotic hadronic structures. We construct four color-octet interpolating currents for the hidden-heavy systems and carry out the operator product expansion up to dimension-eight condensates. Our numerical analysis indicates that the hidden-bottom sector exhibits the clearest sum-rule stability, with flatter Borel platforms than the corresponding hidden-charm sector. We obtain four $0^{--}$ hidden-bottom tetraquark candidates in the mass range $10.8$--$11.1~\mathrm{GeV}$, while their hidden-charm partners are predicted around $4.3$--$4.6~\mathrm{GeV}$. The extracted masses suggest a compact spectral pattern with a mild dependence on the underlying color-octet clustering structure. We also discuss possible decay patterns and emphasize that the absence of the lowest pseudoscalar--pseudoscalar heavy-meson channels is a distinctive consequence of the exotic $0^{--}$ assignment. These results provide useful theoretical guidance for future searches for hidden-heavy exotic states at Belle II and LHCb, with complementary probes of the hidden-charm partners at BESIII. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_21120 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Spectroscopy of hidden-heavy tetraquark states with $J^{PC}=0^{--}$ in a color-octet configuration Wan, Bing-Dong Zhang, Jun-Hao Zhang, Yan Yuan, Ming-Yang High Energy Physics - Phenomenology Within the framework of QCD sum rules, we investigate hidden-heavy tetraquark states with the exotic quantum number $J^{PC}=0^{--}$ in color-octet configurations, namely $[Q\bar q]_{8_c}\otimes[q\bar Q]_{8_c}$ and $[Q\bar Q]_{8_c}\otimes[\bar q q]_{8_c}$ with $Q=c,b$. Since the $0^{--}$ quantum number cannot be realized by conventional $q\bar q$ mesons, the observation of such a state would provide a particularly clean signal for exotic hadronic structures. We construct four color-octet interpolating currents for the hidden-heavy systems and carry out the operator product expansion up to dimension-eight condensates. Our numerical analysis indicates that the hidden-bottom sector exhibits the clearest sum-rule stability, with flatter Borel platforms than the corresponding hidden-charm sector. We obtain four $0^{--}$ hidden-bottom tetraquark candidates in the mass range $10.8$--$11.1~\mathrm{GeV}$, while their hidden-charm partners are predicted around $4.3$--$4.6~\mathrm{GeV}$. The extracted masses suggest a compact spectral pattern with a mild dependence on the underlying color-octet clustering structure. We also discuss possible decay patterns and emphasize that the absence of the lowest pseudoscalar--pseudoscalar heavy-meson channels is a distinctive consequence of the exotic $0^{--}$ assignment. These results provide useful theoretical guidance for future searches for hidden-heavy exotic states at Belle II and LHCb, with complementary probes of the hidden-charm partners at BESIII. |
| title | Spectroscopy of hidden-heavy tetraquark states with $J^{PC}=0^{--}$ in a color-octet configuration |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2605.21120 |