Is $$d^*(2380)$$ d ∗ ( 2380 ) a compact hexaquark state?
Abstract The most fascinating dibaryon in the non-strange quark sector is $$d^*(2380)$$ d ∗ ( 2380 ) , which was reported by WASA-at-COSY Collaboration and confirmed by A2@MAMI Collaboration. The reported mass and decay width are $$M\approx 2.37$$ M ≈ 2.37 GeV, $$\Gamma \approx 70$$ Γ ≈ 70 MeV and t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2023-07-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-11814-2 |
| _version_ | 1797689149867687936 |
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| author | Manying Pan Xinmei Zhu Jialun Ping |
| author_facet | Manying Pan Xinmei Zhu Jialun Ping |
| author_sort | Manying Pan |
| collection | DOAJ |
| description | Abstract The most fascinating dibaryon in the non-strange quark sector is $$d^*(2380)$$ d ∗ ( 2380 ) , which was reported by WASA-at-COSY Collaboration and confirmed by A2@MAMI Collaboration. The reported mass and decay width are $$M\approx 2.37$$ M ≈ 2.37 GeV, $$\Gamma \approx 70$$ Γ ≈ 70 MeV and the quantum numbers are $$IJ^P=03^+$$ I J P = 03 + . The structure of $$d^*(2380)$$ d ∗ ( 2380 ) is still in controversy. In the present calculation, the powerful method in few-body system, Gaussian expansion method (GEM) is employed to explore the structure of $$d^*(2380)$$ d ∗ ( 2380 ) in the framework of constituent quark models without assuming the presupposed structure. The results show that the radius of $$d^*(2380)$$ d ∗ ( 2380 ) is around 0.8 fm, it is a very compact object. Because of the compact structure, the color singlet-singlet component has a large overlap with the color octet-octet one, two colorless, large overlapped $$\Delta $$ Δ s dominate the state is possible. |
| first_indexed | 2024-03-12T01:41:51Z |
| format | Article |
| id | doaj.art-c406c3454b9e4bff94c335150a434835 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-03-12T01:41:51Z |
| publishDate | 2023-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-c406c3454b9e4bff94c335150a4348352023-09-10T11:23:16ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-07-018371910.1140/epjc/s10052-023-11814-2Is $$d^*(2380)$$ d ∗ ( 2380 ) a compact hexaquark state?Manying Pan0Xinmei Zhu1Jialun Ping2Department of Physics, Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal UniversityDepartment of Physics, Yangzhou UniversityDepartment of Physics, Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal UniversityAbstract The most fascinating dibaryon in the non-strange quark sector is $$d^*(2380)$$ d ∗ ( 2380 ) , which was reported by WASA-at-COSY Collaboration and confirmed by A2@MAMI Collaboration. The reported mass and decay width are $$M\approx 2.37$$ M ≈ 2.37 GeV, $$\Gamma \approx 70$$ Γ ≈ 70 MeV and the quantum numbers are $$IJ^P=03^+$$ I J P = 03 + . The structure of $$d^*(2380)$$ d ∗ ( 2380 ) is still in controversy. In the present calculation, the powerful method in few-body system, Gaussian expansion method (GEM) is employed to explore the structure of $$d^*(2380)$$ d ∗ ( 2380 ) in the framework of constituent quark models without assuming the presupposed structure. The results show that the radius of $$d^*(2380)$$ d ∗ ( 2380 ) is around 0.8 fm, it is a very compact object. Because of the compact structure, the color singlet-singlet component has a large overlap with the color octet-octet one, two colorless, large overlapped $$\Delta $$ Δ s dominate the state is possible.https://doi.org/10.1140/epjc/s10052-023-11814-2 |
| spellingShingle | Manying Pan Xinmei Zhu Jialun Ping Is $$d^*(2380)$$ d ∗ ( 2380 ) a compact hexaquark state? European Physical Journal C: Particles and Fields |
| title | Is $$d^*(2380)$$ d ∗ ( 2380 ) a compact hexaquark state? |
| title_full | Is $$d^*(2380)$$ d ∗ ( 2380 ) a compact hexaquark state? |
| title_fullStr | Is $$d^*(2380)$$ d ∗ ( 2380 ) a compact hexaquark state? |
| title_full_unstemmed | Is $$d^*(2380)$$ d ∗ ( 2380 ) a compact hexaquark state? |
| title_short | Is $$d^*(2380)$$ d ∗ ( 2380 ) a compact hexaquark state? |
| title_sort | is d 2380 d ∗ 2380 a compact hexaquark state |
| url | https://doi.org/10.1140/epjc/s10052-023-11814-2 |
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