Probing Hadronization with Strangeness
  The Omega-bar/Omega ratio originating from string decays is predicted to be larger than unity in proton-proton interaction at SPS energies. The anti-omega dominance increases with decreasing beam energy. This surprising behavior is caused by the combinatorics of quark-antiquark production in small and low-mass strings. Since this behavior is not found in a statistical description of hadron production in proton-proton collisions, it may serve as a key observable to probe the hadronization mechanism in such collisions. 
S.A. Bass, M. Bleicher, J. Aichelin, F. Becattini, A. Keranen, F.M.   Liu, K. Redlich, K. Werner