| K^＋ Scattering with the Nuclear Pion from Chiral Effective Lagrangian |
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| 引用本文： | TANYu－Hong ZHANGXiao－Bing 等. K^＋ Scattering with the Nuclear Pion from Chiral Effective Lagrangian[J]. 理论物理通讯, 2002, 37(2): 215-220 |
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| 作者姓名： | TANYu－Hong ZHANGXiao－Bing 等 |
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| 作者单位： | DepartmentofPhysics,Nankaiuniversity,Tianjin300071,China |
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| 基金项目： | 国家自然科学基金，教育部博士基金 |
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| 摘 要： | The K^ scattering cross section with the in-medium virtual pion is evaluated in the lowest-order chiral perturbation theory with the density-dependent pion decay constant and mass.The contribution of nuclear pions to the total K^ -nucleus cross section is found to be about 5% and 12% when the excess pion numbers per nucleon nπ=0.057 and 0.13 are used.The inclusion of the off-mass-shell behavior of the K^ π amplitude produced a significant improvement in the K^ -nucleus cross section.
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| 关 键 词： | K^＋π散射 手征微扰理论 总截面 |
K+ Scattering with the Nuclear Pion from Chiral Effective Lagrangian |
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| TAN Yu-Hong,ZHANG Xiao-Bing,LI Lei,NING Ping-Zhi. K+ Scattering with the Nuclear Pion from Chiral Effective Lagrangian[J]. Communications in Theoretical Physics, 2002, 37(2): 215-220 |
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| Authors: | TAN Yu-Hong ZHANG Xiao-Bing LI Lei NING Ping-Zhi |
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| Abstract: | Thc K+ scattering cross section with the in-medium virtual pion is evaluated in the lowest-order chiralperturbation theory with the density-dependent pion decay constant and mass. The contribution of nuclear pions to thctotal K+-nucleus cross section is found to be about 5% and 12% when the excess pion numbers per nucleon nπ＝ 0.057and 0.13 are used. The inclusion of the off-mass-shell behavior of the K+π amplitude produced a significant improvementin the K+-nucleus cross section. |
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| Keywords: | medium effect total cross section |
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