The $\Omega_{cc}$ resonances with negative parity in the chiral constituent quark model

TL;DR

This paper investigates the spectrum of negative parity $ ext{ extOmega}_{cc}$ resonances as pentaquark states using a chiral constituent quark model, predicting their energies and decay channels for future experimental observation.

Contribution

It introduces a detailed analysis of negative parity $ ext{ extOmega}_{cc}$ resonances within a chiral constituent quark model considering pentaquark configurations, providing predictions for their masses and decay modes.

Findings

Lowest $ ext{ extOmega}_{cc}$ resonances with negative parity are around 4050 MeV.

Resonance transitions to pseudoscalar mesons and ground baryons are studied.

Predicted resonances could be observed in the $ar{D} ext{ extOmega}_c$ channel.

Abstract

Spectrum of the low-lying $\Omega_{cc}$ resonances with negative parity, which are assumed to be dominated by $sccq\bar{q}$ pentaquark components, is investigated using the chiral constituent quark model. Energies of the $\Omega_{cc}$ resonances are obtained by considering the hyperfine interaction between quarks by exchanging Goldstone boson. Possible $sccq\bar{q}$ configurations with spin-parity $1/2^{-}$, $3/2^{-}$ and $5/2^{-}$ are taken into account. Numerical results show that the lowest $\Omega_{cc}$ resonances with negative parity may lie at $4050 \pm 100$ MeV. In addition, the transitions of the $\Omega_{cc}$ resonance to a pseudoscalar meson and a ground baryon state are also investigated within the chiral Lagrangian approach. We expect that these $\Omega_{cc}$ resonances could be observed in the $\bar{D}\Xi_{c}$ channel by future experiments.