Reactionπ−p→π−π+π−pat 8 GeV/c

Results from a high-statistics experiment involving an exposure of the SLAC 82-in. hydrogen bubble chamber to a beam of 8-GeV/c ${\pi }^{-}$ yielding a final state of ${\pi }^{-}{\pi }^{+}{\pi }^{-}p$ are presented. Copious production of $\rho$, ${\Delta }^{++}$, and $f$ is found. Considerable quasi-two-body production in which one particle decays to one of the above resonances is also observed. Some double-resonance production involving baryon and meson resonances is also seen. The production properties of $\rho$, ${\Delta }^{++}$, and $f$ mesons are well described by a double-Regge model.