Resonance Production in Heavy Ion Collisions: Suppression of $\Lambda (1520)$ and Enhancement of $\Sigma (1385)$

Abstract

We investigate the yield of $\Lambda (1520)$ 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 $\Lambda (1520)+\pi \leftrightarrow {\Sigma }^{\ast }$ can favor ${\Sigma }^{\ast }$ production, thereby decreasing the $\Lambda (1520)$ yield. Within the same approach we thus find a yield enhancement for $\Sigma (1385)$ and a yield suppression for $\Lambda (1520)$.

arXiv comment13 pages, 9 figures, accepted to Physical Review C, right figure 9 was replaced because lines style was mixed up

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Cited by in corpus (4)

• Baryonic resonances close to the Kbar-N threshold: the case of Sigma(1385)^+ in pp collisions
• Unstable Hadrons in Hot Hadron Gas in Laboratory and in the Early Universe
• Particle Production and Deconfinement Threshold
• Particle production in matter at extreme conditions