对散布阶段的 0 部分波浪π K 转移的 J = 的背景贡献的不确定性小心地被学习。我们第一指出圆形的切割在 S 1/2 和 S 3/2 波浪展出不同人物。当前者否定地作出贡献到散布长度参数时，后者断然作出贡献，即，有一个错误的符号。这个事...对散布阶段的 0 部分波浪π K 转移的 J = 的背景贡献的不确定性小心地被学习。我们第一指出圆形的切割在 S 1/2 和 S 3/2 波浪展出不同人物。当前者否定地作出贡献到散布长度参数时，后者断然作出贡献，即，有一个错误的符号。这个事实显示对阶段移动的短范围力量贡献在异国情调的隧道是非可以忽略的。不过，κ杆将在估计左手切了贡献关于理论不确定性仅仅稍微被影响，这被验证。展开更多
The low-energy S-wave πN and KN scatterings are studied by using the K-matrix approach within the meson exchange framework. The t-channel meson exchanges, especially ρ and σ exchanges, are found to play a very impo...The low-energy S-wave πN and KN scatterings are studied by using the K-matrix approach within the meson exchange framework. The t-channel meson exchanges, especially ρ and σ exchanges, are found to play a very important role in these two processes. The t-channel p exchange determines the isospin structure of the scattering amplitudes, it gives attractive force in the low isospin state but repulsive force in the high isospin state. The t-channel σ exchange gives a very large contribution in these two processes, while it is negligible in meson-meson S-wave scatterings.展开更多
基金The project supported in part by National Natural Science Foundations of China under Grant Nos. 10575002, 10421503, and 10491306.Acknowledgments It is a pleasure to thank Prof. Han-Qing Zheng for valuable discussions and a careful reading of the manuscript.
文摘对散布阶段的 0 部分波浪π K 转移的 J = 的背景贡献的不确定性小心地被学习。我们第一指出圆形的切割在 S 1/2 和 S 3/2 波浪展出不同人物。当前者否定地作出贡献到散布长度参数时，后者断然作出贡献，即，有一个错误的符号。这个事实显示对阶段移动的短范围力量贡献在异国情调的隧道是非可以忽略的。不过，κ杆将在估计左手切了贡献关于理论不确定性仅仅稍微被影响，这被验证。
基金National Natural Science Foundation of China (10435080, 10521003)Chinese Academy of Sciences (KJCX3-SYW-N2)
文摘The low-energy S-wave πN and KN scatterings are studied by using the K-matrix approach within the meson exchange framework. The t-channel meson exchanges, especially ρ and σ exchanges, are found to play a very important role in these two processes. The t-channel p exchange determines the isospin structure of the scattering amplitudes, it gives attractive force in the low isospin state but repulsive force in the high isospin state. The t-channel σ exchange gives a very large contribution in these two processes, while it is negligible in meson-meson S-wave scatterings.
