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
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.
. [J]. 中国物理快报, 2021, 38(10): 101201-.
Ming-Zhu Liu and Li-Sheng Geng. Prediction of an $\varOmega_{bbb}\varOmega_{bbb}$ Dibaryon in the Extended One-Boson Exchange Model. Chin. Phys. Lett., 2021, 38(10): 101201-.
2021, Vol. 38 
