Chinese Physics C > 2001, Vol. 25 > Issue(6): 521-525

C(γ,η)X Reactions and Properties of N^*(1535) in Nuclei

Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100039, China2 Center of Nuclear Theory, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China3 Institute of Theoretical Physics, The Chinese Academy of Sciences, Beijing 100080, China

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Abstract：
The η photon production reaction on nuclei is studied by employing N ^*(1535) resonance model. The parameters of the model are extracted by using experimental data of N ^*decay channels and fitting γp→ηp reaction cross section. The result shows that the theoretical values are in good agreement with experimental data if M _N*=1550MeV. The total cross section of the η photoproduction on ¹²C is calculated. We find that the width of N ^*(1535) in nuclei increases because of corrections of many-body effects, and the interaction between N ^*and nuclei has the feature of repulsion.

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PING Rong-Gang and JIANG Huan-Qing. C(γ,η)X Reactions and Properties of N ^*(1535) in Nuclei[J]. Chinese Physics C, 2001, 25(6): 521-525.

PING Rong-Gang and JIANG Huan-Qing. C(γ,η)X Reactions and Properties of N ^*(1535) in Nuclei[J]. Chinese Physics C, 2001, 25(6): 521-525. shu

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Received: 2000-06-28
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

C(γ,η)X Reactions and Properties of N^*(1535) in Nuclei

PING Rong-Gang^,
JIANG Huan-Qing

Corresponding author:PING Rong-Gang,

Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100039, China2 Center of Nuclear Theory, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China3 Institute of Theoretical Physics, The Chinese Academy of Sciences, Beijing 100080, China

Received Date:2000-06-28
Accepted Date:1900-01-01
Available Online:2001-06-05

Abstract:The η photon production reaction on nuclei is studied by employing N^*(1535) resonance model. The parameters of the model are extracted by using experimental data of N^*decay channels and fitting γp→ηp reaction cross section. The result shows that the theoretical values are in good agreement with experimental data if M_N*=1550MeV. The total cross section of the η photoproduction on¹²C is calculated. We find that the width of N^*(1535) in nuclei increases because of corrections of many-body effects, and the interaction between N^*and nuclei has the feature of repulsion.