Title: ON THE DISPERSION-RELATION TREATMENT OF THE LOW ENERGY PION-NUCLEON SCATTERING
Abstract: 摘要 本文讨论了经过減除的π-核子散射色散关系和通常拉格朗日描述及其重整化处理间的关系。指出一次減除可以解释为作用常数的重整化。我们用经过減除的色散关系处理了π-核子S波散射。计算结果指出,π介子和核子间的相互作用应该是赝矢型而不是赝标型的。 Abstract The relation between the subtracted dispersion relations for the low energy pion-nucleon scattering and the usual Lagrangian formulation under the renormalization treatment is discussed in the present paper. It is shown that the subtraction actually represents the renormalization of the interaction constants. Using the subtracted dispersion relations we have treated the problem of the S-wave pion nucleon scattering. Our result shows that the interaction between the pion and the nucleon should be of the pseudo-vector type rather than the pseudo-scalar type. 作者及机构信息 胡宁 1. 北京大学物理系 Authors and contacts HU NINO 1. 北京大学物理系 参考文献 [1] 施引文献