Doubly-Charm and Doubly-Bottom Pentaquark molecular States via the QCD sum rules
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866929438820663296 |
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| author | Wang, Xiu-Wu Wang, Zhi-Gang |
| author_facet | Wang, Xiu-Wu Wang, Zhi-Gang |
| contents | In the present work, the doubly-charm and doubly-bottom pentaquark molecular states $D^{(*)}Σ_c^{(*)}$ and $B^{(*)}Σ_b^{(*)}$ are studied via the QCD sum rules. Sixteen color singlet-singlet type currents with the definite isospin-spin-parity $IJ^P$ are constructed to interpolate the corresponding hadronic states with the same quantum numbers. The masses and pole residues of those doubly-heavy pentaquark molecular states are calculated, the results show that their masses are all below the corresponding meson-baryon thresholds, which means that they are possible bound states, not resonant states, moreover, the possible decay channels for the doubly-charm molecular states are given. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_00281 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Doubly-Charm and Doubly-Bottom Pentaquark molecular States via the QCD sum rules Wang, Xiu-Wu Wang, Zhi-Gang High Energy Physics - Phenomenology In the present work, the doubly-charm and doubly-bottom pentaquark molecular states $D^{(*)}Σ_c^{(*)}$ and $B^{(*)}Σ_b^{(*)}$ are studied via the QCD sum rules. Sixteen color singlet-singlet type currents with the definite isospin-spin-parity $IJ^P$ are constructed to interpolate the corresponding hadronic states with the same quantum numbers. The masses and pole residues of those doubly-heavy pentaquark molecular states are calculated, the results show that their masses are all below the corresponding meson-baryon thresholds, which means that they are possible bound states, not resonant states, moreover, the possible decay channels for the doubly-charm molecular states are given. |
| title | Doubly-Charm and Doubly-Bottom Pentaquark molecular States via the QCD sum rules |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2405.00281 |