Elsevier

Physics Letters B

Volume 246, Issues 3–4, 30 August 1990, Pages 513-519
Physics Letters B

Kinetics of an expanding pion gas

https://doi.org/10.1016/0370-2693(90)90640-RGet rights and content

Abstract

We analyze the mean free path for the multipion states produced in heavy ion collisions. The observed momentum distributions imply that the gas is far out of chemical equilibrium and rapidly expands both in longitudinal and transverse direction.

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Work supported in part by Schweizerischer Nationalfonds

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