Abstract
Meson-nucleon scatterings are investigated in an SU(3) × SU(3) σ model with scalar, vector, pseudoscalar and pseudovector couplings between mesons and baryons. From the calculation of effective coupling constants, sigma terms and s-wave scattering lengths for πN and K+N scatterings in the tree approximation, we find that the pseudoscalar coupling dominates s- and u-channel baryon Born terms, and the cancellation between the scalar and vector interactions leads to reasonable meson-nucleon scattering properties.
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