S_<11>(1535) Resonance in Nuclei Studied via (γ,η) Reactions

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概要

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• The properties of the A_<11>(1535) resonance in nuclei were studied through the C(γ,η) reaction for 600 < E_γ < 1100 MeV. The excitation function of the cross section shows a broad resonance structure peaked around 900 MeV with a width of more than 300 MeV, which is originated from the S_<11>(1535) resonance. The QMD model calculation with the standard parameter of the S_<11>(1535) resonance underestimates the yields for E_γ larger than 850 MeV. In order to reproduce the shape of the broad resonance structure, an artificial modification of the resonance parameter of the S_<11>(1535) is necessary; the helicity amplitude should be increased by 6 % or the resonance width should be increased by 70 MeV.

• 理論物理学刊行会の論文
• 2003-07-18

著者

• Kasagi Jirohta

  Laboratory Of Nuclear Science Tohoku University

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