CHIRAL DYNAMICS AND THE LOW-ENERGY KAON-NUCLEON INTERACTION

被引：656

作者：

KAISER, N

SIEGEL, PB

WEISE, W

机构：

[1] Physik Department, Technische Universität München, Institut für Theoretische Physik

来源：

NUCLEAR PHYSICS A | 1995年 / 594卷 / 03期

关键词：

D O I：

10.1016/0375-9474(95)00362-5

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We examine the meson-baryon interaction in the strangeness S = -1 sector using an effective chiral Lagrangian, Potentials are derived from this Lagrangian and used in a coupled-channel calculation of the low-energy observables. The potentials are constructed such that in the Born approximation the s-wave scattering length is the same as that given by the effective chiral Lagrangian, up to order q(2). A comparison is made with the available low-energy hadronic data of the coupled K(-)p, Sigma pi, Lambda pi system, which includes the Lambda(1405) resonance, K(-)p elastic and inelastic scattering, and the threshold branching ratios of the K(-)p decay. Good fits to the experimental data and estimates of previously unknown Lagrangian parameters are obtained.

引用

页码：325 / 345

页数：21

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