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Chemical equilibration of $π$, $ρ$ and $ω$ mesons in ultra--relativistic nuclear collisions

David Seibert
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Abstract

I estimate the degree of local chemical equilibration for $π$, $ρ$ and $ω$ mesons in ultra--relativistic nuclear collisions. The $π$ and $ρ$ mesons remain near chemical equilibrium in all cases, while the $ω$ meson density is typically 30--50\% higher than the equilibrium value for O+Ag collisions at $\sqrt{s}=20$ GeV. If chemical reactions are turned off, the $ω$ meson density is much larger, 2.5--3 times its equilibrium value. Thus, $ω$ mesons may provide the most sensitive tests for the degree of chemical equilibration in nuclear collisions.

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David Seibert. 1993-02-02. Chemical equilibration of $π$, $ρ$ and $ω$ mesons in ultra--relativistic nuclear collisions. https://arxiv.org/abs/nucl-th/9301009

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