1
The third uncertainty is due to the uncertainty in the ${{\mathit \Xi}_{{{c}}}^{+}}$ mass, taken to be the PDG 2022 fit result $2467.71$ $\pm0.23$ MeV.
References:
AAIJ
2023AS
PRL 131 131902
Observation of new $\Omega_c^{0}$ states decaying to the $\Xi_c^+K^-$ final state