Resonance Production in Heavy Ion Collisions: Suppression of $Λ(1520)$ and Enhancement of $Σ(1385)$
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We investigate the yield of $Λ(1520)$ resonance in heavy ion collisions within the framework of a kinetic master equation without the assumption of chemical equilibrium. We show that reactions such as $Λ(1520)+π\leftrightarrow Σ^*$ can favor $Σ^*$ production, thereby decreasing the $Λ(1520)$ yield. Within the same approach we thus find a yield enhancement for $Σ(1385)$ and a yield suppression for $Λ(1520)$.
13 pages, 9 figures, accepted to Physical Review C, right figure 9 was replaced because lines style was mixed up
13 pages, 9 figures, accepted to Physical Review C, right figure 9 was replaced because lines style was mixed up