English

Hadronic molecular assignment for the newly observed $\Omega^*$ state

High Energy Physics - Phenomenology 2018-09-26 v1

Abstract

Very recently, a new Ω\Omega^{*} state was reported by the Belle Collaboration, with its mass of 2012.4±0.7 (stat)±0.6 (syst) MeV2012.4 \pm 0.7\ \text{(stat)}\pm 0.6\ \text{(syst)}\ \mathrm{MeV}, which locates just below the KΞK\Xi^* threshold and hence hints to be a possible KΞK\Xi^* hadronic molecule. Using the effective Lagrangian approach as the same as our previous works for other possible hadronic molecular states, we investigate the decay behavior of this new Ω\Omega^* state within the hadronic molecular picture. The results show that the measured decay width can be reproduced well and its dominant decay channel is predicted to be the KπΞK\pi\Xi three-body decay. This suggests that the newly observed Ω\Omega^* may be ascribed as the JP=3/2J^P={3/2}^- KΞK\Xi^* hadronic molecular state and can be further checked through its KπΞK\pi\Xi decay channel.

Keywords

Cite

@article{arxiv.1807.00997,
  title  = {Hadronic molecular assignment for the newly observed $\Omega^*$ state},
  author = {Yong-Hui Lin and Bing-Song Zou},
  journal= {arXiv preprint arXiv:1807.00997},
  year   = {2018}
}

Comments

7pages, 6 figures

R2 v1 2026-06-23T02:48:59.164Z