Investigation of rho+, rho- and rho0 Production in pi+ p Interactions at 16-GeV/c and p p Interactions at 24-GeV/c and Quark Model Predictions

The Bonn-Hamburg-Munich & Aachen-Bonn-CERN-Cracow-Warsaw collaborations Bockmann, K. ; Heilmann, H.G. ; von Holt, K. ; et al.
Nucl.Phys.B 140 (1978) 235, 1978.
Inspire Record 122675 DOI 10.17182/hepdata.35023

Quasi-inclusive and total inclusive ϱ + , ϱ − and ϱ 0 cross sections have been studied, using data of a π + 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 ϱ 0 , ϱ + and ϱ − production are about equal. This equality also holds for the differential cross sections d σ/ d y ∗ , all showing the characteristics of dominantly central production. In the π + p reactions the ϱ − are mainly produced centrally, whereas there are strong additional contributions in the beam fragmentation region for ϱ + and ϱ 0 mesons. In the central region, however, the cross sections for ϱ + , ϱ − and ϱ 0 production are almost equal within errors. All our findings agree with what is expected from quark model predictions.

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