Finding a clean process $B^- \to K^- D^0 K^0$ to probe absolutely exotic four-quark states
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866916040118632448 |
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| author | Duan, Man-Yu Wang, Guan-Ying Liang, Yun Wang, En Liu, Xiang Chen, Dian-Yong |
| author_facet | Duan, Man-Yu Wang, Guan-Ying Liang, Yun Wang, En Liu, Xiang Chen, Dian-Yong |
| contents | Motivated by the observations of $T_{c\bar{s}0}(2900)^0$ and $T_{c\bar{s}0}(2900)^{++}$, we propose to search for $\tcsbar^0$ in the cleaner process $B^- \to K^- D^0 K^0$. In the $D^*K^*$ molecular picture, our estimates suggest that $T_{c\bar{s}0}(2900)^0$ should contribute significantly to the $D^0 K^0$ invariant mass distribution in $B^- \to K^- D^0 K^0$, as reported by the Belle II Collaboration. The corresponding fit fraction is estimated to be $(9.72\pm 3.92)\%$ or $(7.09\pm 5.88)\%$ in different fitting schemes. Further precise measurements of this process at Belle II and LHCb could be helpful for clarifying the nature of $T_{c\bar{s}0}(2900)$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_01382 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Finding a clean process $B^- \to K^- D^0 K^0$ to probe absolutely exotic four-quark states Duan, Man-Yu Wang, Guan-Ying Liang, Yun Wang, En Liu, Xiang Chen, Dian-Yong High Energy Physics - Phenomenology Motivated by the observations of $T_{c\bar{s}0}(2900)^0$ and $T_{c\bar{s}0}(2900)^{++}$, we propose to search for $\tcsbar^0$ in the cleaner process $B^- \to K^- D^0 K^0$. In the $D^*K^*$ molecular picture, our estimates suggest that $T_{c\bar{s}0}(2900)^0$ should contribute significantly to the $D^0 K^0$ invariant mass distribution in $B^- \to K^- D^0 K^0$, as reported by the Belle II Collaboration. The corresponding fit fraction is estimated to be $(9.72\pm 3.92)\%$ or $(7.09\pm 5.88)\%$ in different fitting schemes. Further precise measurements of this process at Belle II and LHCb could be helpful for clarifying the nature of $T_{c\bar{s}0}(2900)$. |
| title | Finding a clean process $B^- \to K^- D^0 K^0$ to probe absolutely exotic four-quark states |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2601.01382 |