2018/06/30 by Maxim V. Polyakov, Hyeon-Dong Son, Bao-Dong Sun +2
Physics and Astronomy · #Flavour #High-Energy Particle Collisions Research #Mathematical physics #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #nucl-ex
paper · pdf · doi:10.1016/j.physletb.2019.03.054
6 pages, discussion of the Omega(2012) width in the molecular picture is added
openalex created_date 2018/06/21 · arxiv created 2018/07/11 · openalex publication_date 2019/04/02 · arxiv updated 2019/04/10 · openalex updated_date 2026/08/05
We perform the flavour SU(3) analysis of the recently discovered Ω(2012) hyperon. We find that well known (four star) Δ(1700) resonance with quantum numbers of JP=3/2− is a good candidate for the decuplet partner of Ω(2012) if the branching for the three-body decays of the latter is not too large ≤70%. That implies that the quantum numbers of Ω(2012) are I(JP)=0(3/2−). The predictions for the properties of still missing Σ and Ξ decuplet members are made. We also discuss the implications of the K‾Ξ(1530) molecular picture of Ω(2012). In the molecular picture, Ω(2012) state can have quantum numbers of either I(JP)=0(3/2−) or I(JP)=1(3/2−). Crucial experimental tests to distinguish various pictures of Ω(2012) are suggested.