Duality Aspects of Meson-Baryon Scattering and Urbaryon Rearrangement Amplitudes

概要

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On the basis of the urbaryon rearrangement pictures, we study phenomenologically differential cross section and polarization of forward and backward two-body scattering. It is shown in the forward region that the observed large polarization and the breaking of line reversal relation in differential cross sections are due to the existence of one of the Z-type urbaryon rearrangement amplitudes (Z_2) which has non-exotic SU(3) quantum number in all channels. In the backward region, we get a result that the Z_2 amplitude is suppressed remarkably compared with other urbaryon rearrangement amplitudes. Furthermore we obtain relative magnitude and phases among various urbaryon rearrangement amplitudes. Meanings of these results are discussed in connection with other theoretical frameworks, e. g., the absence rule, the duality, the Regge pole model and the SU(3) approaches.
理論物理学刊行会の論文
1973-08-25