Experimental Analyses of the SU(3) Symmetry in High Energy Two-Body and Quasi-Two-Body Scattering

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概要

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• Validity of the SU(3) symmetry of the high energy two-body and quasi-two-body reaction is investigated in a small momentum transfer region by analyzing the experimental data. The scattering amplitudes are represented in terms of the t-channel amplitudes which are specified by the SU(3) multiplet, the hypercharge and the isotopic spin in the t-channel. Furthermore the octet and singlet dominance is assumed, because the assumption seems to be consistent with the experimental data presently available. It is shown that the SU(3) symmetry is not seriously broken in the reactions for the type of P_8B_8→P_8B_8, P_8 and B_8 being the octet pseudoscalar meson and the octet baryon, respectively. In contrast, the symmetry is shown to be broken in the decuplet baryon (B_<10>^*) production P_8B_8→P_8B_<10>^*. The breaking of the symmetry becomes larger with increasing energy Angular distributions for several reactions and the real to imaginary ratios of the forward scattering amplitude for the reactions π^-p→π^0n, π^-p→η_8n, K^-p→K^^-^0n and K^+n→K^0p are predicted.

• 理論物理学刊行会の論文
• 1968-06-25

著者

• Kobayashi Tsunehiro

  Department Of Physics Tokyo University Of Education

• Ohba Ichiro

  Department Of Physics And Science And Engineering Research Laboratory Waseda University

• Fujimura Kimio

  Department Of Applied Physics Waseda University

• Ohba Ichiro

  Department Of Applied Physics Waseda University

• Kobayashi Tsunehiro

  Department Of Physics Tokyo University

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