Figure 1

(Left panel): invariant-mass distribution of $\rm \Omega_c^0\rightarrow\Omega^-\pi^+$ candidates and their charge conjugates integrated over the whole \pt interval 2--12 GeV$/c$. The blue line shows the total fit function and the red line represents the combinatorial background fit. (Right panel): acceptance-times-efficiency for prompt, feed-down, and inclusive $\rm \Omega_c^0$ baryons decaying into $\rm \Omega^-\pi^+$ as a function of $p_{\rm T}$ in pp collisions at $\sqrt{s}=13$ TeV.