${\Omega }_c$ excited states within a ${\mathrm{SU}(6)}_{\mathrm{lsf}}\times$HQSS model

Abstract

We have reviewed the renormalization procedure used in the unitarized coupled-channel model of Phys. Rev. D85 114032 (2012), and its impact in the $C=1$, $S=-2$, and $I=0$ sector, where five ${\Omega }_c^{(\ast )}$ states have been recently observed by the LHCb Collaboration. The meson-baryon interactions used in the model are consistent with both chiral and heavy-quark spin symmetries and lead to a successful description of the observed lowest-lying odd parity resonances ${\Lambda }_c(2595)$ and ${\Lambda }_c(2625)$, and ${\Lambda }_b(5912)$ and ${\Lambda }_b(5920)$ resonances. We show that some (probably at least three) of the states observed by LHCb will also have odd parity and spins $J=1/2$ and $J=3/2$, belonging two of them to the same ${\mathrm{SU}(6)}_{\mathrm{light}-\mathrm{spin}-\mathrm{flavor}}\times$HQSS multiplets that the latter strangenessless heavy$-\Lambda$ baryons.

11 pages, 3 figures, 6 tables, published in The European Physical Journal C

References in corpus (17)

• Heavy Baryons in a Quark Model
• Spectroscopy and Regge trajectories of heavy baryons in the relativistic quark-diquark picture
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Towards an understanding of heavy baryon spectroscopy
• Faddeev study of heavy baryon spectroscopy
• The s-wave charmed baryon resonances from a coupled-channel approach with heavy quark symmetry
• Charmed baryons in a relativistic quark model
• P-wave charmed baryons from QCD sum rules
• Mass spectra and Regge trajectories of ${\Lambda }_c^{+}$, ${\Sigma }_c^0$, ${\Xi }_c^0$ and ${\Omega }_c^0$ Baryons
• Hidden charm N and Delta resonances with heavy-quark symmetry
• Odd parity bottom-flavored baryon resonances
• D-wave charmed and bottomed baryons from QCD sum rules
• Exotic dynamically generated baryons with negative charm quantum number
• Interpretation of the new ${\Omega }_c^0$ states via their mass and width
• Low-lying even parity meson resonances and spin-flavor symmetry
• $D$-wave heavy baryons of the $SU(3)$ flavor $6_F$
• Narrow pentaquarks as diquark-diquark-antiquark systems

Cited by in corpus (20)

• An updated review of the new hadron states
• Description of the ${\Xi }_c$ and ${\Xi }_b$ states as molecular states
• Surveying exotic pentaquarks with the typical $QQqq\bar{q}$ configuration
• Compositeness of S-wave weakly-bound states from next-to-leading order Weinberg's relations
• ${\Xi }_c$ and ${\Xi }_b$ excited states within a ${\mathrm{SU}(6)}_{\mathrm{lsf}}\times$HQSS model
• Strong and radiative decays of DΞmolecular state and newly observed ${\Omega }_c$ states
• $D\Xi$ and $D^{\ast }\Xi$ Molecular States from One Boson Exchange
• Spectrum of the molecular pentaquarks
• Doubly charmed ${\Xi }_{cc}$ molecular states from meson-baryon interaction
• Possible pentaquark candidates: new excited ${\Omega }_c$ states
• Observed ${\Omega }_b$ spectrum and meson-baryon molecular states
• Excited ${\Omega }_b$ baryons and fine structure of strong interaction
• ${\mathbf{\Omega }}_{\mathbf{b}}^{-}\to ({\mathbf{\Xi }}_{\mathbf{c}}^{+}{\mathbf{K}}^{-}){\mathbf{\pi }}^{-}$ and the ${\mathbf{\Omega }}_{\mathbf{c}}$ states
• ${\Xi }_{bb}$ and ${\Omega }_{bbb}$ molecular states
• Heavy ${\Omega }_c$ and ${\Omega }_b$ baryons in the quark model
• Systematical study of ${\Omega }_c$-like molecular states from interactions ${\Xi }_c^{{(}^{\prime },\ast )}{\bar{K}}^{(\ast )}$ and ${\Xi }^{(\ast )}{D}^{(\ast )}$
• The molecular nature of some exotic hadrons
• Identifying the ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ as $D$-wave bottom baryons
• Exotic ${\Omega }_c^0$ baryons from meson-baryon scattering
• ${\Omega }_c$ excited states: a molecular approach with heavy-quark spin symmetry