Partial Wave Amplitudes of the Reaction π^-+p→η+n

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概要

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• Energy dependent partial wave anlyses for the reaction π^-+p→η+n are carried out with respect to S, P, D and F waves in the energy range 561-1300 MeV. Two different types of the solutions are obtained. In the first solution, the η-production peak is dominated by the S_<11> resonance with mass M=1570 MeV, total width Γ^T=140 MeV, branching ratios (S_<11> res. →_<π>N)/(S_<11> res. →all)=40% and (S_<11> res. →_<η>N)/(S_<11> res. →all)=50%. In the second solution, it is dominated by the P_<11> resonance with M=1580 MeV, Γ^T=130 MeV, (P_<11> res. →_<π>N)/(P_<11> res.→all)=35%, and (P_<11> res. →_<η>N)/(P_<11> res.→all)=30%. This P_<11> resonance is a new one which is different from Roper's resonance. In this analysis the second solution is better fitting experimental data than the first solution.

• 理論物理学刊行会の論文
• 1967-12-25

著者

• Ozaki Kazuhiko

  Department Of Chemistry Faculty Of Science And Technology Keio University

• Sasaki Shosuke

  Department Of Physics College Of General Education Osaka University

• Takahashi Junji

  Department Of Physics Osaka University

• SASAKI Shosuke

  Department of Physics, Osaka University

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