| THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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Prediction of an $\varOmega_{bbb}\varOmega_{bbb}$ Dibaryon in the Extended One-Boson Exchange Model |
| Ming-Zhu Liu1,2 and Li-Sheng Geng2,3,4* |
1School of Space and Environment, Beihang University, Beijing 102206, China
2School of Physics, Beihang University, Beijing 102206, China
3Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang University, Beijing 102206, China
4School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
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| Cite this article: |
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Ming-Zhu Liu and Li-Sheng Geng 2021 Chin. Phys. Lett. 38 101201 |
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Abstract Since Yukawa proposed that the pion is responsible for mediating the nucleon-nucleon interaction, meson exchanges have been widely used in understanding hadron-hadron interactions. The most studied mesons are the $\sigma$, $\pi$, $\rho$, and $\omega$, while other heavier mesons are often argued to be less relevant because they lead to short range interactions. However, whether the range of interactions is short or long should be judged with respect to the size of the system studied. We propose that one charmonium exchange is responsible for the formation of the $\varOmega_{ccc}\varOmega_{ccc}$ dibaryon, recently predicted by lattice QCD simulations. The same approach can be extended to the strangeness and bottom sectors, leading to the prediction on the existence of $\varOmega\varOmega$ and $\varOmega_{bbb}\varOmega_{bbb}$ dibaryons, while the former is consistent with the existing lattice QCD results, the latter remains to checked. In addition, we show that the Coulomb interaction may break up the $\varOmega_{ccc}\varOmega_{ccc}$ pair but not the $\varOmega_{bbb}\varOmega_{bbb}$ and $\varOmega\varOmega$ dibaryons.
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Received: 07 August 2021
Editors Suggestion
Published: 17 September 2021
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| Fund: Supported by the National Natural Science Foundation of China (Grant Nos. 1210050997, 11975041, 11735003, and 11961141004). |
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