In-Medium Effects in Eta Photo-Production through the S_<11> Resonance in the Relativistic Approach (Nuclear Physics)
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概要
- 論文の詳細を見る
In-medium effects in photon excitation of the S_<11> resonance from a nucleon and its decay into an η-meson are studied using the relativistic mean field approach. We examine the in-medium effects by varying the Dirac fields of the nucleon and the S_<11> resonance separately. We conclude that the Dirac fields of the nucleon, which reduce the nucleon effective mass, enlarge the width of the S_<11> resonance, and small Dirac fields of the resonance shift the peak position. These combined effects can account for the in-medium properties observed in the experimental data for ^<12>C(γ,η) reaction.
- 理論物理学刊行会の論文
- 2004-02-25
著者
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Maruyama Toshiki
Department of Physics, Kyoto University
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Chiba S
Advanced Science Research Center Japan Atomic Energy Research Institute
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MARUYAMA Tomoyuki
College of Bioresource Sciences, Nihon University
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CHIBA Satoshi
Advanced Science Research Center, Japan Atomic Energy Research Institute
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Maruyama T
Department Of Physics Kyoto University
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Maruyama T
Advanced Science Research Center Japan Atomic Energy Research Institute
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Maruyama T
Jappan Atomic Energy Res. Inst. Ibaraki
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Maruyama Tomoyuki
College Of Bioresource Sciences Nihon University
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Chiba Satoshi
Advanced Science Research Center Japan Atomic Energy Agency
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Maruyama T
College Of Bioresource Sciences Nihon University:institute Of Quantum Energy Nihon University:advanc
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Maruyama Tomoyuki
College Of Bioresouce Sciences Nihon University
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MARUYAMA Toshiki
Advanced Science Research Center Japan Atomic Energy Research Institute
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