A Study Of The Reaction Pi P Pi Pi P At 310 And 377 Mev PDF Download

Proton distributions for the reaction pi /sup -/ + yields pi /sup -/ pi /sup 0/ + P are measured at incident-pion energies of 310 and 377 Mev. The protons from this reaction are identified in a scintillation counter telescope by a combination of dE/dx, range, and time-of-flight methods. At 310 Mev, selected proton energy intervals are taken at laboratory-system angles of 15 and 22.5 deg. At 377 Mev, distributions in energy from 80.5 to 163.5 Mev at angles from 10 deg to the kinematic limit are measured. The total cross sections obtained are: 0.14 plus or minus 0.07 mb at 310 Mev, and 0.37 plus or minus 0.03 mb at 377 Mev. These values are in good agreement with the theoretical predictions of a pi pi interaction model by Schnitzer in which his parameters are chosen to fit the total cross section and the pi /sup +/ angular distribution in the reaction pi / sup -/ + p yields pi /sup +/ + pi /sup -/ + n. (32 references.) (auth).