The Ω(2012) as a Hadronic Molecule

IF 3.5 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Physics Letters Pub Date : 2024-08-01 DOI:10.1088/0256-307x/41/8/081402

Ju-Jun Xie, Li-Sheng Geng

引用次数: 0

Abstract

Recently, a new excited baryon state, Ω(2012), was observed in the invariant mass spectra of

K−Ξ0

and

KS0Ξ−

by the Belle collaboration. This state has a narrow width (∼ 6 MeV) compared to other baryon states with a similar mass. Here, we provide a mini-review on the Ω(2012) state from the molecular perspective, where it appears to be a dynamically generated state with spin-parity 3/2⁻ from the coupled-channels interactions of the

K¯Ξ(1530)

and ηΩ in s-wave and

K¯Ξ

in d-wave. Additionally, alternative explanations for the Ω(2012) resonance are also discussed.

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作为强子分子的 Ω(2012)

最近，Belle 合作小组在 K-Ξ0 和 KS0Ξ- 的不变质量谱中观测到了一个新的激发重子态 Ω(2012)。与质量相近的其他重子态相比，这个态的宽度较窄（∼ 6 MeV）。在这里，我们从分子的角度对Ω(2012)态进行了一个小综述，它似乎是由s波中的¯Ξ(1530)和ηΩ以及d波中的¯Ξ的耦合通道相互作用动态生成的自旋比为3/2-的态。此外，还讨论了Ω(2012)共振的其他解释。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chinese Physics Letters 物理-物理：综合

CiteScore

5.90

自引率

8.60%

发文量

13238

审稿时长

4 months

期刊介绍： Chinese Physics Letters provides rapid publication of short reports and important research in all fields of physics and is published by the Chinese Physical Society and hosted online by IOP Publishing.