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CHIRAL DYNAMICS AND THE LOW-ENERGY KAON-NUCLEON INTERACTION
被引：647
|作者：
KAISER, N
SIEGEL, PB
WEISE, W
机构：
[1] Physik Department, Technische Universität München, Institut für Theoretische Physik
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.
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页码：325 / 345
页数：21
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