Invariant mass distributions of \pipipi triplets in the indicated \pt ranges for \piz's reconstructed with PCM (top), PCM-EMCal (middle), and EMCal (bottom) in \pp (left) and \pPb (right) collisions. Subtraction of the third-order polynomial background description (blue) from the \pipipi candidates (black) results in the signal of $\omega$ candidates (red). In \pPb collisions, this signal is scaled by a factor of three for better visibility. The vertical dashed lines denote the invariant mass region where the raw yield was obtained through bin counting, as described in \refsec{Omega}.