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Relativistic Spin-Isospin Dependent Response Function of Nucleus |
LIU Liang-Gang;CHEN Wei;AI Bao-Quan;ZHENG Xiao-Ping;Masahiro Nakano* |
Department of Physics, Zhongshan University, Guangzhou 510275
*University of Occupational and Environmental Health Kitakyusyu 807, Japan
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Cite this article: |
LIU Liang-Gang, CHEN Wei, AI Bao-Quan et al 2000 Chin. Phys. Lett. 17 652-654 |
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Abstract A full relativistic formalism is employed to derive the relativistic particle-hole and delta-hole excitation polarization insertion of pion propagator in nuclear matter. The spin-isospin-dependent response function of nucleus at high energy-momentum transfer is calculated with the nuclear matter approximation. The short range correlation effect, two-nucleon absorption and nucleus form factor effects are included in the calculation. The position and width of the resonance peak of the spin-isospin mode are reproduced and found to be coincident with experiment data. The position of the peak and its width is sensitive to Landau-Migdal parameter g’ which is about 0.6.
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Keywords:
21.65.+f
24.10.Jv
25.55.Kr
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Published: 01 September 2000
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