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Overpopulation of $\bar Ω$ in pp collisions: a way to distinguish statistical hadronization from string dynamics

M. Bleicher·F. M. Liu·A. Keränen·J. Aichelin·S. A. Bass·F. Becattini·K. Redlich·K. Werner
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Abstract

The $\barΩ/Ω$ ratio originating from string decays is predicted to be larger than unity in proton proton interactions at SPS energies ($E_{\rm lab}$=160 GeV). 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.

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M. Bleicher, F. M. Liu, A. Keränen, J. Aichelin, S. A. Bass, F. Becattini, K. Redlich, K. Werner. 2001-11-15. Overpopulation of $\bar Ω$ in pp collisions: a way to distinguish statistical hadronization from string dynamics. https://doi.org/10.1103/physrevlett.88.202501

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