Abstract
Consideratlon is given to a general case of mesonnucleon dispersion where a pair of mesons with different masses are strongly coupled to the nucleon field. Following the procedure of Symanzik it is straight forward to see that the conventional dispersion relations for a single mass meson continue to hold for the meson of lower mass; however for the meson of higher mass they still have to be proved. It follows that, due to the difference between the mass of the charged smd uncharged mesons, the scattering dispersion relations are rigorously proved only for ( pi /sup 0/,N) scattering. (auth)
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