Investigation of p exp + , p exp - and P exp 0 Production in pi exp + p Interactions at 16 GeV/C and Pp Interactions at 24 GeV/C and Quark Model Predictions

摘要

Quasi- and total inclusive rho exp + , rho exp - and rho exp 0 cross sections have been studied, using data of a pi exp + p and a pp bubble chamber experiment at 16 and 24 GeV/c, respectively. In pp collisions it is found that the total inclusive cross sections for rho exp + , rho exp - and rho exp - production are about equal. This equality also holds for the differential cross sections dsigma/dy*, all showing the characteristics of dominantly central production. In the pi exp + p reactions the rho exp - are mainly produced centrally, whereas there are strong additional contributions in the beam fragmentation region for rho exp + and rho exp 0 mesons. In the central region, however, the cross sections for rho exp + , rho exp - and rho exp 0 production are almost equal within errors. All our findings agree with what is expected from quark model predictions. (Atomindex citation 09:393815)