Figure 2

Reconstruction of the \omm and \omp signals. Sketch of the weak decay of \omm into a Λ and a K−,and measured invariant mass distribution (blue points) of ΛK− and Λ⎯⎯⎯⎯K+ combinations The dotted red line represents the fit to the data including signal and background,and the black dotted line the background alone The contamination from misidentification is ≤ \fakeOmega\si{\percent}.