The structure of pentaquarks ${\Omega }_c^0$ in the chiral quark model

Abstract

Recently, the experimental results of LHCb Collaboration suggested the existence of five new excited states of ${\Omega }_c^0$, ${\Omega }_c(3000{)}^0$, ${\Omega }_c(3050{)}^0$, ${\Omega }_c(3066{)}^0$, ${\Omega }_c(3090{)}^0$ and ${\Omega }_c(3119{)}^0$, the quantum numbers of these new particles are not determined now. To understand the nature of the states, a dynamical calculation of 5-quark systems with quantum numbers $I{J}^P=0(\frac{1}{2}{)}^{-}$, $0(\frac{3}{2}{)}^{-}$ and $0(\frac{5}{2}{)}^{-}$ is performed in the framework of chiral quark model with the help of gaussian expansion method. The results show the $\Xi -\bar{D}$, ${\Xi }_c\bar{K}$ and ${\Xi }_c^{\ast }\bar{K}$ are possible the candidates of these new particles. The distances between quark pairs suggest that the nature of pentaquark states.

8 pages, 11 tables

Cited by in corpus (14)

• Very narrow excited ${\Omega }_c$ baryons
• Understanding the newly observed ${\Omega }_c$ states through their decays
• Interpretation of the newly observed ${\Omega }_c^0$ resonances
• Quantum Numbers of ${\Omega }_c$ States and Other Charmed Baryons
• The observed ${\Omega }_c^0$ resonances as pentaquark states
• Strong decays of exotic and non-exotic heavy baryons in the chiral quark-soliton model
• Investigating the excited ${\Omega }_c^0$ states through ${\Xi }_{c}K$ and ${\Xi }_c^{{}^{\prime }}K$ decay channels
• Surveying exotic pentaquarks with the typical $QQqq\bar{q}$ configuration
• Strong and radiative decays of DΞmolecular state and newly observed ${\Omega }_c$ states
• Strong Decay of $P_c(4380)$ Pentaquark in a Molecular Picture
• Heavy Holographic Exotics: Tetraquarks as Efimov States
• Interpretation of excited ${\Omega }_b$ signals
• ${\mathbf{\Omega }}_{\mathbf{b}}^{-}\to ({\mathbf{\Xi }}_{\mathbf{c}}^{+}{\mathbf{K}}^{-}){\mathbf{\pi }}^{-}$ and the ${\mathbf{\Omega }}_{\mathbf{c}}$ states
• Properties of ${\Sigma }_Q^{\ast }$, ${\Xi }_Q^{\ast }$ and ${\Omega }_Q^{\ast }$ heavy baryons in cold nuclear matter