Abstract
Odorico has shown that measurements of certain meson-baryon scattering amplitudes support the postulate that the zeros in the spin-independent amplitudes are approximately linear in the Mandelstam plane. He has shown further that if the postulate is extended to all meson-baryon amplitudes, a violation of SU(3) interaction symmetry is implied. We investigate the possibility of determining from experimental data which of the two principles, the linear-zero postulate or SU(3) interaction symmetry, is better satisfied. The reactions $\overline{K}N\ensuremath{\rightarrow}\ensuremath{\pi}\ensuremath{\Sigma}$ and $\ensuremath{\pi}N\ensuremath{\rightarrow}K\ensuremath{\Sigma}$ are crucial in this determination. We show that the existing data involving these processes are not in perfect accord with either of the two principles, but favor the linear-zero postulate.
Published Version
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