Interpretation of the new $$\Omega _c^{0}$$ Ω c 0 states via their mass and width

Abstract

Abstract The masses and pole residues of the ground and first radially excited $$ \Omega _c^{0}$$ Ω c 0 states with spin–parities $$J^{P}=1/2^{+},\,3/2^{+}$$ J P = 1 / 2 + , 3 / 2 + , as well as P-wave $$\Omega _c^{0}$$ Ω c 0 with $$J^{P}=1/2^{-},\,3/2^{-}$$ J P = 1 / 2 - , 3 / 2 - are calculated by means of the two-point QCD sum rules. The strong decays of $$\Omega _c^{0}$$ Ω c 0 baryons are also studied and the widths of these decay channels are computed. The relevant computations are performed in the context of the full QCD sum rules on the light cone. The results obtained for the masses and widths are confronted with recent experimental data of the LHCb Collaboration, which allow us to interpret $$\Omega _c(3000)^{0}$$ Ω c ( 3000 ) 0 , $$\Omega _c(3050)^{0}$$ Ω c ( 3050 ) 0 , and $$ \Omega _c(3119)^{0} $$ Ω c ( 3119 ) 0 as the excited css baryons with the quantum numbers $$ (1P,\,1/2^{-})$$ ( 1 P , 1 / 2 - ) , $$(1P,\,3/2^{-})$$ ( 1 P , 3 / 2 - ) , and $$(2S,\,3/2^{+})$$ ( 2 S , 3 / 2 + ) , respectively. The $$ (2S,\,1/2^{+})$$ ( 2 S , 1 / 2 + ) state can be assigned either to the $$\Omega _c(3066)^{0}$$ Ω c ( 3066 ) 0 state or the $$\Omega _c(3090)^{0}$$ Ω c ( 3090 ) 0 excited baryon.