Resonances Do Not Equilibrate

Details Resonances Do Not Equilibrate Resonances Do Not Equilibrate

2009-02-15

arxiv.org/abs/0902.2550v1

Acta Phys.Polon.B40:1013-1024,2009

Physics

Nuclear Physics

Nuclear Theory

12 pages, in Fourth Workshop on Particle Correlations and Femtoscopy (WPCF2008), Krakow, September 11-14, 2008

Scientific paper

We discuss, in qualitative and quantitative fashion, the yields of hadron resonances. We show that these yields, in general, are not in chemical equilibrium. We evaluate the non-equilibrium abundances in a dynamic model implementing the $1+2\leftrightarrow 3$ resonance formation reactions. Due to the strength of these reactions, we show the $\Sigma(1385)$ enhancement, and the $\Lambda(1520)$ suppression explicitly.

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