Revisit assignments of the new excited ${\Omega }_c$ states with QCD sum rules

Zhi-Gang Wang, Xing-Ning Wei, Ze-Hui Yan

In this article, we distinguish the contributions of the positive parity and negative parity ${\Omega }_c$ states, study the masses and pole residues of the 1S, 1P, 2S and 2P ${\Omega }_c$ states…