Reaction π−p→π−π+n at 8 GeVc

Abstract

Approximately 26 500 two-prong events were measured and analyzed by the Notre Dame and Pennsylvania groups, independently. From these analyses, 2421 events of the reaction ${\pi }^{-}p\to {\pi }^{-}{\pi }^{+}n$ were obtained. The predictions of one-particle-exchange models with and without absorptive effects are compared with our data for the production and decay of the ${\rho }^0$ and the $f^0$. We have also observed the recently discovered $g^0$ meson. The cross sections for ${\rho }^0$, $f^0$, and $g^0$ production are also given.