# Investigating the excited $\Omega^{0}_{c}$ states through $\Xi_{c}K$ and $\Xi^{'}_{c}K$ decay channels

## TL;DR

This study models newly observed $ ext{Omega}_c^0$ states as molecular pentaquarks using the chiral quark model, successfully explaining some states as $ ext{Xi} D$ resonances and predicting others, including higher mass states.

## Contribution

It introduces a molecular pentaquark model for $ ext{Omega}_c^0$ states and provides explanations for specific observed states within this framework.

## Key findings

- $ ext{Omega}_c(3119)^0$ explained as $ ext{Xi} D$ resonance with $J^P=1/2^-$
- Predicted a higher mass $ ext{Omega}_c^0$ state at 3533 MeV with $J^P=5/2^-$
- Extended analysis to $ ext{Omega}_b^0$ states with similar results.

## Abstract

Inspired by the five newly observed $\Omega^{0}_{c}$ states by the LHCb detector, we study the $\Omega_{c}^{0}$ states as the $S-$wave molecular pentaquarks with $I=0$, $J^{P}=\frac{1}{2}^{-}$, $\frac{3}{2}^{-}$, and $\frac{5}{2}^{-}$ by solving the RGM equation in the framework of chiral quark model. Both the energies and the decay widths are obtained in this work. Our results suggest that $\Omega_{c}(3119)^{0}$ can be explained as an $S-$wave resonance state of $\Xi D$ with $J^{P}=\frac{1}{2}^{-}$, and the decay channels are the $S-$wave $\Xi_{c} K$ and $\Xi^{'}_{c}K$ . Other reported $\Omega^{0}_{c}$ states cannot be obtained in our present calculation. Another $\Omega_{c}^{0}$ state with much higher mass 3533 MeV with $J^{P}=\frac{5}{2}^{-}$ is also obtained. In addition, the calculation is extended to the $\Omega_{b}^{0}$ states, similar results as that of $\Omega^{0}_{c}$ are obtained.