A model for low-energy meson-baryon scattering within the framework of $U(6,6)$ symmetry is studied. The effective $U(6,6)$-symmetric terms are treated as background terms representing distant singularities. These are supplemented by the appropriate one-particle exchange contributions. The model is used to calculate the real parts of the S, P, and D partial-wave amplitudes in the low-energy region of πN and KN elastic scattering. It is found that the results are in reasonably good agreement with the experimental information in T=3/2 and T=1/2 πN and in T=1 KN scattering. However, the model predicts large S-wave scattering in the T=0 KN channel.
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Goldstein et al. (1967) studied this question.
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