Confirming the molecule explain for the Ξ(2030)

Since its discovery in 1977, the spin-parity of Ξ(2030) has not been fully determined experimentally. The latest Particle Data Group (PDG) listing suggests it may be a baryon with $J=5/2$. Therefore, studying the mass spectrum and decay properties of Ξ(2030) has become a current hot topic to definitively establish its spin-parity. As the three-quark model fails to explain Ξ(2030), we previously proposed it may be a molecule primarily composed of K̄^Σ with JP=5/2⁺, based on its mass spectrum study. To verify its molecular state interpretation, this work proposes studying the strong decays of Ξ(2030) assuming it is a P-wave JP=5/2⁺ meson-baryon molecule predominantly composed of K̄^Σ. We calculated all experimentally measured two-body and three-body final state decay widths of Ξ(2030), including Ξ(2030) → K̄Λ, K̄Σ, πΞ, πΞ*, and Ξ(2030) → ππΞ, ̄Σ, ̄Λ. The results indicate that both the total decay width and partial decay widths agree well with experimental values within the error margins. This supports that Ξ(2030) is a molecule with spin-parity JP = 5/2⁺, predominantly composed of K̄*Σ. Compared to the experimental central values, our results are slightly smaller, which suggests that Ξ(2030) may contain additional components besides meson-baryon molecular components, such as three quark structures.