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

The LHCb experiment has recently reported two excited ${\mathrm{\Omega }}_c$ resonances decaying to ${\mathrm{\Xi }}_c^{+}{K}^{-}$, with masses about 3185 and 3327 MeV. We discuss their assignment to $2S_{1\mathrm{/}2}$ and $2S_{3\mathrm{/}2}$ 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.