Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1995-05-30
Nucl.Phys. A594 (1995) 325-345
Physics
Nuclear Physics
Nuclear Theory
20 pages, 10 postscript figures, uses revtex, e-mail addresses: Norbert.Kaiser@physik.tu-muenchen.de, Peter.Siegel@physik.tu-m
Scientific paper
10.1016/0375-9474(95)00362-5
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 amplitude is the same as that given by the effective chiral Lagrangian, up to order $q^2$. 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.
Kaiser Nicholas
Siegel Peter B.
Weise Wolfram
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