Testing the molecular nature of the Ω(2012) with the ψ(3770) → Ω K Ξ and ψ(3770) → Ω K Ξ^*(1530) ( Ω K πΞ) reactions

2024/10/30 by Jing Song, Wei-Hong Liang, Song, Jing +7 · 1 citation
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Atomic and Subatomic Physics Research #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2410.23204

openalex publication_date 2024/10/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report on the reactions ψ(3770)→ Ω⁺ K Ξ and ψ(3770)→ Ω⁺ KΞ^*(1530)~(Ξ^*(1530)→ πΞ), and calculate the mass distributions \frac\rm dΓ\rm dM_inv(KΞ) and \frac\rm dΓ\rm dM_inv(KΞ^*), respectively. We obtain clear peaks corresponding to the Ω(2012). From the decay of ψ(3770)→ Ω⁺ KΞ^*, we also get a second, broader, peak around 2035 \rm MeV, which comes from the Ω(2012) decay to KΞ^*. This second peak is closely tied to the molecular picture of the Ω(2012) with the KΞ^*(1530) and ηΩ components. Its observation would provide a boost to the molecular picture of the Ω(2012).

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• Structure of the Ω^-(2012) with Hamiltonian Effective Field Theory

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