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arXiv 2301.00630hep-phhep-exhep-latnucl-exnucl-th
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Tribaryons 与格点QCD及单玻色子交换势

Tribaryons with lattice QCD and one-boson exchange potentials

Tian-Wei Wu, Si-Qiang Luo, Ming-Zhu Liu, Li-Sheng Geng, Xiang Liu

AI总结:

本研究使用高斯展开法探讨格点QCD相互作用下三体$Ω$系统的束缚性,发现格点QCD两体$^1S_0$相互作用无法形成束缚态,但单玻色子交换势可使$ΩΩΩ$形成束缚态,且较重系统中$^5S_2$相互作用受抑制导致无束缚态。

摘要:

受格点QCD模拟预测的由$ΩΩ$、$Ω_{ccc}Ω_{ccc}$和$Ω_{bbb}Ω_{bbb}$组成的两体强子分子存在的启发,我们使用高斯展开法研究由$ΩΩΩ$、$Ω_{ccc}Ω_{ccc}Ω_{ccc}$和$Ω_{bbb}Ω_{bbb}Ω_{bbb}$组成的三体系统是否能在格点QCD提供的两体$^1S_0$相互作用下结合。结果表明,这些三体系统均未形成束缚态。另一方面,我们发现采用单玻色子交换势时,$ΩΩΩ$系统出现了束缚态,其中$^5S_2$相互作用起关键作用。我们的研究支持$\ rac{3}{2}^+$ $ΩΩΩ$束缚态的存在,以及$\ rac{3}{2}^+$ $Ω_{ccc}Ω_{ccc}Ω_{ccc}$和$Ω_{bbb}Ω_{bbb}Ω_{bbb}$束缚态的不存在,这归因于较重系统中$^5S_2$相互作用受到抑制。

英文摘要:

Motivated by the existence of two-body hadronic molecules composed of $ΩΩ$, $Ω_{ccc}Ω_{ccc}$ and $Ω_{bbb}Ω_{bbb}$ predicted by lattice QCD simulations, we use the Gaussian expansion method to investigate whether three-body systems composed of $ΩΩΩ$, $Ω_{ccc}Ω_{ccc}Ω_{ccc}$ and $Ω_{bbb}Ω_{bbb}Ω_{bbb}$ can bind with the two-body $^1S_0$ interactions provided by lattice QCD. Our results show that none of the three-body systems bind. On the other hand, we find that with the one-boson exchange potentials the $ΩΩΩ$ system develops a bound state, for which the $^5S_2$ interaction plays an important role. Our studies support the existence of the $\frac{3}{2}^+$ $ΩΩΩ$ bound state and the nonexistence of the $\frac{3}{2}^+$ $Ω_{ccc}Ω_{ccc}Ω_{ccc}$ and $Ω_{bbb}Ω_{bbb}Ω_{bbb}$ bound states, due to the suppressed $^5S_2$ interactions in heavier systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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