The observed ${\Omega }_c^0$ resonances as pentaquark states

Abstract

In present work, we investigate the spectrum of several low-lying $sscq\bar{q}$ pentaquark configurations employing the constituent quark model, within which the hyperfine interaction between quarks is taken to be mediated by Goldstone boson exchange. Our numerical results show that four $sscq\bar{q}$ configurations with $J^P=1/2^{-}$ or $J^P=3/2^{-}$ lie at energies very close to the recently observed five ${\Omega }_c^0$ states by LHCb collaboration, this indicates that the $sscq\bar{q}$ pentaquark configurations may form sizable components of the observed ${\Omega }_c^0$ resonances.

To appear in Phys. Rev. D

References in corpus (10)

• Observation of five new narrow ${\Omega }_c^0$ states decaying to ${\Xi }_c^{+}{K}^{-}$
• Very narrow excited ${\Omega }_c$ baryons
• Decay properties of $P$-wave charmed baryons from light-cone QCD sum rules
• Understanding the newly observed ${\Omega }_c$ states through their decays
• Quantum Numbers of ${\Omega }_c$ States and Other Charmed Baryons
• Analysis of the ${\Omega }_c(3000)$, ${\Omega }_c(3050)$, ${\Omega }_c(3066)$, ${\Omega }_c(3090)$ and ${\Omega }_c(3119)$ with QCD sum rules
• Interpretation of the new ${\Omega }_c^0$ states via their mass and width
• Possibility of the existence of charmed exotica
• Hadronic decay properties of newly observed ${\Omega }_c$ baryons
• The structure of pentaquarks ${\Omega }_c^0$ in the chiral quark model

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