Are the new excited $\Omega_c$ baryons negative parity states?

We calculate the mass and residue of the newly observed $\Omega_c(3000)$ and $\Omega_c(3066)$ states with quantum numbers $J^P = \frac{1}{2}^{-}$ and $\frac{3}{2}^{-}$ within QCD sum rules. Our predictions on masses are in good agreement with the experimental results.
Comment: 12 pages, 7 figures; typos corrected, appendix is added