Chiral SU(3) dynamics with coupled channels: inclusion of p-wave multipoles

We extend our recent non-perturbative chiral SU(3) coupled channel approach to pion- and photon-induced eta- and K-meson production off protons by inc luding all strong and electromagnetic p-wave multipoles, We identify the p- wave amplitudes of the next-to-leading order SU(3) chiral meson-baryon Lagr angian with a coupled channel potential which is iterated to infinite order s in a separable Lippmann-Schwinger equation. Our approach to eta- and R-ph otoproduction introduces no additional free parameters. By adjusting a few finite range parameters and the unknown parameters in the Lagan,oian, we ar e able to simultaneously describe a very large amount of low-energy data. T hese include the total and differential cross sections of the pi-induced re actions pi(-) p --> eta n, K-0 Lambda, K-0 Sigma(0), K+ Sigma(-) and pi(+) p --> K+ Sigma(+) as well as those of photoproduction gamma p --> eta p, K Lambda, K+ Sigma(0), K-0 Sigma(+) The polarization observables measured in eta- and K-photoproduction are particularly sensitive to interference term s between the s- and p-wave multipoles. The total cross section data are re markably well reproduced in all channels. There remain, however, some open questions concerning details of angular distributions and polarization obse rvables. (C) 2000 Elsevier Science B.V. All rights reserved.