• Accepted Paper

Investigating three-body resonances in ααΩ/Ωccc clusters within the Ω/Ωccc9Be nucleus

Hao Zhou and Xiang Liu

Phys. Rev. D - Accepted 20 October, 2026

DOI: https://doi.org/10.1103/b4d3-cr4q

Abstract

We investigate the bound and resonant states of the α + α + Ω and α + α + Ω𝑐𝑐𝑐 three-body systems, corresponding to Ω9Be and Ω𝑐𝑐𝑐9Be, within the Gaussian expansion method combined with the complex scaling method. The αΩ and αΩ𝑐𝑐𝑐 interactions are constructed by folding the NΩ and NΩ𝑐𝑐𝑐 potentials obtained from lattice QCD calculations by the HAL QCD Collaboration with the nucleon density distribution of the α particle. The uncertainty associated with the α-particle matter radius is also examined. For the Ω sector, the strong NΩ attraction generates deeply bound 0+1, 2+1, and 4+1 states in 9ΩBe, accompanied by a pronounced contraction of the αα core, demonstrating a strong gluelike effect of the Ω baryon. An unconventional inversion between the 0+1 and 4+1 levels is also predicted. In contrast, the Ω𝑐𝑐𝑐 baryon produces considerably weaker attraction: the 0+1 state of Ω𝑐𝑐𝑐9Be is weakly bound, whereas the 2+1 and 4+1 states remain resonances. Their resonance energies and widths exhibit a clear dependence on the strength of the αΩ𝑐𝑐𝑐 interaction. These results reveal qualitatively different gluelike behaviors of the Ω and Ω𝑐𝑐𝑐 baryons and provide predictions for the spectroscopy of exotic multistrange and triply charmed hypernuclei.

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