A possible interpretation of the newly observed $\Omega (2012)$ state

Abstract

Inspired by the newly observed $\Omega (2012)$ state at Belle II, we investigate the two-body strong decays of $\Omega$ baryons up to $N=2$ shell within the chiral quark model. Our results indicate that: (i) the newly observed $\Omega (2012)$ state could be assigned to the spin-parity $J^P=3/2^{-}$ state $|70{,}^{2}10,1,1,{\frac{3}{2}}^{-}⟩$ and the experimental data can be reasonably described. However, the spin-parity $J^P=1/2^{-}$ state $|70{,}^{2}10,1,1,{\frac{1}{2}}^{-}⟩$ and spin-parity $J^P=3/2^{+}$ state $|56{,}^{4}10,2,0,{\frac{3}{2}}^{+}⟩$ can't be completely excluded. (ii) The $D$-wave states in the $N=2$ shell are most likely to be narrow states with a width of dozens of MeV and have a good potential to be observed in the $\Xi K$ and/or $\Xi (1530)K$ channels in future experiments. The $\Omega (2250)$ resonance listed in PDG may be a good candidate of the $J^P=5/2^{+}$ $1D$ wave state $|56{,}^{4}10,2,2,5/2^{+}⟩$.

6 pages, 2 figures

References in corpus (15)

• Spectroscopy and Regge trajectories of heavy baryons in the relativistic quark-diquark picture
• Strong and radiative decays of the low-lying $S$- and $P$-wave singly heavy baryons
• Charmed baryon strong decays in a chiral quark model
• Strong decays of heavy-light mesons in a chiral quark model
• Global Analysis of Nucleon Strange Form Factors at Low $Q^2$
• Strong and radiative decays of the doubly charmed baryons
• Structure of charmed baryons studied by pionic decays
• Xi and Omega baryons in the Skyrme model
• Strangeness -2 and -3 Baryons in a Constituent Quark Model
• Quark-Model Identification of Baryon Ground and Resonant States
• Strong decays of the newly observed $D(2550)$, $D(2600)$, $D(2750)$, and $D(2760)$
• Strong decays of higher excited heavy-light mesons in a chiral quark model
• Masses of $[70,{\ell }^{+}]$ Baryons in the $1/N_c$ Expansion
• Study of π^{-}p \to ηn at low energies in a chiral constituent quark model
• Low-lying $\Omega$ states with negative parity in an extended quark model with Nambu-Jona-Lasinio interaction

Cited by in corpus (27)

• $\Omega$ baryon spectrum and their decays in a constituent quark model
• The $\Omega (2012)$ as a hadronic molecule
• Coupled channels dynamics in the generation of the $\Omega (2012)$ resonance
• Hadronic molecular assignment for the newly observed ${\Omega }^{\ast }$ state
• Search for $\Omega (2012)\to K\Xi (1530)\to K\pi \Xi$ at Belle
• Strong decay modes $\bar{K}\Xi$ and $\bar{K}\Xi \pi$ of the $\Omega (2012)$ in the $\bar{K}\Xi (1530)$ and $\eta \Omega$ molecular scenario
• Mass spectra and strong decays of charmed and charmed-strange mesons
• Revisiting the $\Omega (2012)$ as a hadronic molecule and its strong decays
• $\Omega (2012)$ through the looking glass of flavour SU(3)
• Theoretical study of the $\Omega (2012)$ state in the ${\Omega }_c^0\to {\pi }^{+}\Omega (2012{)}^{-}\to {\pi }^{+}(\bar{K}\Xi {)}^{-}$ and ${\pi }^{+}(\bar{K}\Xi \pi {)}^{-}$ decays
• Possible interpretation of the newly observed ${\Omega }_b$ states
• Toward discovering the excited $\Omega$ baryons through nonleptonic weak decays of ${\Omega }_c$
• Spectroscopic Study of Strangeness=-3 ${\Omega }^{-}$ Baryon
• Newly observed $\Omega (2012)$ state and strong decays of the low-lying $\Omega$ excitations
• Interpretation of the ${\Omega }_c\to {\pi }^{+}\Omega (2012)\to {\pi }^{+}(\bar{K}\Xi )$ relative to ${\Omega }_c\to {\pi }^{+}\bar{K}\Xi$ from the $\Omega (2012)$ molecular perspective
• Can $\Omega (2012)$ be explained as a molecular state?
• Strong decays of the hadronic molecule ${\Omega }^{\ast }(2012)$
• Interpretation of excited ${\Omega }_b$ signals
• Reanalysis of the newly observed ${\Omega }^{\ast }$ state in hadronic molecule model
• Understanding the nature of $\Omega (2012)$ in a coupled-channel approach
• Further understanding the nature of $\Omega (2012)$ within a chiral quark model
• Analysis of $\Omega (2012)$ as a molecule in the chiral quark model
• Identifying triple-strangeness $\Omega$ hyperons in light of recent experimental results
• Toward establishing the low-lying $P$-wave excited ${\Sigma }_c$ baryon states
• Structure of the ${\Omega }^{-}(2012)$ with Hamiltonian Effective Field Theory
• Observation of the $\Omega$(2012) baryon at the LHC
• The CPT-violating effects on neutrons' gravitational bound state