We present the ground and excited state spectra of ${\mathrm{\Omega }}_c^0$ baryons with spin up to $7/2$ from lattice quantum chromodynamics with dynamical quark fields. Based on our lattice results, we predict the quantum numbers of five ${\mathrm{\Omega }}_c^0$ baryons, which have recently been observed by the LHCb Collaboration. Our results strongly indicate that the observed states ${\mathrm{\Omega }}_c(3000{)}^0$ and ${\mathrm{\Omega }}_c(3050{)}^0$ have spin-parity $J^P=1/2^{-}$, the states ${\mathrm{\Omega }}_c(3066{)}^0$ and ${\mathrm{\Omega }}_c(3090{)}^0$ have $J^P=3/2^{-}$, whereas ${\mathrm{\Omega }}_c(3119{)}^0$ is possibly a $5/2^{-}$ state.

• Received 6 April 2017

DOI:https://doi.org/10.1103/PhysRevLett.119.042001