Excited ${\Omega }_c$ baryons as 2S states

Abstract

The LHCb experiment has recently reported two excited ${\Omega }_c$ resonances decaying to ${\Xi }_c^{+}{K}^{-}$, with masses about 3185 and 3327 MeV. We discuss their assignment to $2S_{1/2}$ and $2S_{3/2}$ states, which can be compared with masses based on extrapolation from the observed 1S states. The agreement is not perfect, but weighs against an earlier alternative assignment.

arXiv comment4 pages

References in corpus (7)

• Observation of five new narrow ${\Omega }_c^0$ states decaying to ${\Xi }_c^{+}{K}^{-}$
• Quantum Numbers of Recently Discovered ${\Omega }_c^0$ Baryons from Lattice QCD
• Very narrow excited ${\Omega }_c$ baryons
• Observation of an Excited $B_c^{\pm }$ Meson State with the ATLAS Detector
• Observation of two excited B${}_{\mathrm{c}}^{+}$ states and measurement of the B${}_{\mathrm{c}}^{+}$(2S) mass in pp collisions at $\sqrt{s}=$ 13 TeV
• Observation of an excited $B_c^{+}$ state
• Observation of excited ${\Omega }_c^0$ baryons in ${\Omega }_b^{-}\to {\Xi }_c^{+}{K}^{-}{\pi }^{-}$ decays

Cited by in corpus (7)

• Masses and radiative decay widths of S- and P-wave singly-, doubly- and triply-heavy charm and bottom baryons
• The singly-charmed pentaquark molecular states via the QCD sum rules
• Molecular charmed baryons and pentaquarks from light-meson exchange saturation
• Refining radiative decay studies in singly heavy baryons
• Investigation of the mass spectra of singly heavy baryons ${\Sigma }_Q$, ${\Xi }_Q^{\prime }$ and ${\Omega }_Q$ $(Q=c,b)$ in the Regge trajectory model
• Heavy baryons in the relativized quark model with chromodynamics
• Mass spectrum and magnetic moments of singly-charmed baryons: a quark-diquark model analysis of ${\Omega }_c(3185{)}^0$ and ${\Omega }_c(3327{)}^0$