Data on the reactions (K+/π+)p→(K+/π+)pπ+π- and (K+/π+)p→(K+/π+)p2π+2π-, obtained with the European Hybrid Spectrometer, are presented and compared with data at lower energies. The contribution of beam and target diffractive dissociation and double Pomeron exchange, and porperties of these reactions are discussed.
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The production of φ mesions is studied in the reaction π+p→π+p K+K− and π+→π+p K0K¯0 at 3.75 GeV/c. A large isotropic component is seen in the production angular distribution for the reaction π+p→π+pφ. The cross sections for the φπ+p and φΔ++ final states are compared with the cross sections for ωπ+p and ωΔ++ at the same momentum.
NORMALIZED TO THE CROSS SECTION FOR PI+ P --> PI+ P PI+ PI-.
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