N * production in high-energy π-p and K-p collisions by regge-pole exchange modelproduction in high-energy π-p and K-p collisions by regge-pole exchange model

Abstract

The reactions K+p→K0N*++,π p→π0N*+┴ and π p→ωN*++ are studied using ρ Regge-pole exchange mechanism. The values of the ρ trajectory α (t) are taken from the π− -p charge exchange scattering data and thet-dependence of the residues is neglected. Then the latter are obtained in terms of the field-theoretic coupling constants using the fact that Regge-pole exchange is identical to the corresponding elementary-particle exchange at the pole point. Thus the production cross-sections are obtained in terms of these coupling constants and do not involve any other unknown parameters. The coupling constants are then determined by normalizing the total cross-section for each reaction to the experimental value at a given energy, and are shown to agree with existing estimates. Finally the energy and momentum-transfer dependence of the three production cross-sections are analysed and are found to be in broad agreement with experiment.