The double regge pole model for the reaction π−p → pπ+π−π− at 13 and 20 GeV/c

Data from the reaction π−p → pπ+π−π− at 13 and 20 GeV/c are used in a comparison of the channel π−p → pϱ0π− with a Double-Regge-Pole Model (DRPM) which includes both π- and ϱ-trajectory exchanges. A similar comparison is made for the channel π−p → pf0π−. Excellent agreement between the model and the data is obtained.