Invisible Charm Exotica

Abstract

One possible interpretation of two narrow ${\Omega }_c^0$ states reported by the LHCb Collaboration at CERN in 2017 is that they are pentaquarks belonging to a $\overline{15}$ exotic SU(3) representation, as predicted by the Chiral Quark--Soliton Model. If so, there must exist a number of other exotic states since the model predicts three different $\overline{15}$ multiplets of heavy baryons. We show, that depending on the soliton spin $J$, these states are either very narrow or very broad. This explains why they might have escaped experimental observation. Furthermore, we show that the lightest members of these multiplets are stable against two body strong decays.

arXiv comment11 pages, 3 figures, v2 accepted in Phys. Rev. D

References in corpus (30)

• Exotic Anti-Decuplet of Baryons: Prediction from Chiral Solitons
• Baryons as non-topological chiral solitons
• Observation of five new narrow ${\Omega }_c^0$ states decaying to ${\Xi }_c^{+}{K}^{-}$
• Baryons as Chiral Solitons in the Nambu--Jona-Lasinio Model
• Strong Decays of Charmed Baryons in Heavy Hadron Chiral Perturbation Theory
• Quantum Numbers of Recently Discovered ${\Omega }_c^0$ Baryons from Lattice QCD
• Very narrow excited ${\Omega }_c$ baryons
• Charmed Baryon Physics Circa 2021
• Strong Decays of Charmed Baryons in Heavy Hadron Chiral Perturbation Theory: An Update
• Observation of Excited ${\Omega }_c$ Charmed Baryons in $e^{+}{e}^{-}$ Collisions
• Pentaquark in the Skyrme Model
• Chiral-Soliton Predictions for Exotic Baryons
• Interpretation of the newly observed ${\Omega }_c^0$ resonances
• Analysis of the ${\Omega }_c(3000)$, ${\Omega }_c(3050)$, ${\Omega }_c(3066)$, ${\Omega }_c(3090)$ and ${\Omega }_c(3119)$ with QCD sum rules
• New ${\Omega }_c^0$ baryons discovered by LHCb as the members of $1P$ and $2S$ states
• Possibility of the existence of charmed exotica
• The observed ${\Omega }_c^0$ resonances as pentaquark states
• Strong decays of exotic and non-exotic heavy baryons in the chiral quark-soliton model
• Observation of excited ${\Omega }_c^0$ baryons in ${\Omega }_b^{-}\to {\Xi }_c^{+}{K}^{-}{\pi }^{-}$ decays
• Pion mean fields and heavy baryons
• Hyperon Semileptonic decay constants with flavor SU(3) symmetry breaking
• Possible pentaquark candidates: new excited ${\Omega }_c$ states
• Possible open-charmed pentaquark molecule ${\Omega }_c(3188)$ --- the $D\Xi$ bound state --- in the Bethe-Salpeter formalism
• Doubly Heavy Tetraquarks in the Chiral Quark Soliton Model
• Program for Generating Tables of SU(3) Coupling Coefficients
• A Mixing Coupling Scheme for Spectra of Singly Heavy Baryons with Spin-1 Diquarks in P-waves
• A theory of baryon resonances at large N_c
• Improved pion mean fields and masses of singly heavy baryons
• Heavy baryon decay widths in the large $N_c$ limit in chiral theory
• Landscape of heavy baryons from the perspective of the chiral quark-soliton model

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