Inelastic and Finite Width Effects on ρ-Meson Propagator and Correction to Radiative Decay of Mesons

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概要

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• Inelastic and finite-width effects to the ρ-meson propagator are studied in the framework of the Gounaris-Sakurai and Renard approxination of many channel N/D method. For the ρ-meson, the finite-width factor is substantially modified by the A_1π closed channel essentially due to the large Γ_<ρ→2π>, the large ρA_1π coupling and the S-wave behaviour of ρ→A_1π process. By using the recently reported experimental data on the process ρ^-→π^-γ, it is pointed out that the experimental ratios Γ_<ω→πγ>/Γ_<ρ→πγ> and Γ_<η'→ργ>/Γ_<η'→ωγ> are well reproduced by the vector-meson dominance model if we take account of the finite-width factor.

• 理論物理学刊行会の論文
• 1980-08-25

著者

• OKUBO Seiji

  Department of Physics, Hokkaido University

• Okubo Seiji

  Department Of Physics Hokkaido University

• Okubo Seiji

  Department of Neurology, Nippon Medical School Main Hospital, Japan

関連論文

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