SU(3) Chiral Dynamics with Coupled Channels: Eta and Kaon Photoproduction

Details SU(3) Chiral Dynamics with Coupled Channels: Eta and Kaon Photoproduction SU(3) Chiral Dynamics with Coupled Channels: Eta and Kaon Photoproduction

1996-07-29

arxiv.org/abs/hep-ph/9607459v1

Nucl.Phys. A612 (1997) 297-320

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, TeX type, 21 figures in ps, submitted to Nucl. Phys. A

Scientific paper

10.1016/S0375-9474(96)00321-1

We identify the leading s-wave amplitudes of the SU(3) chiral meson-baryon Lagrangian with an effective coupled-channel potential which is iterated in a Lippmann-Schwinger equation. The strangeness $S=-1$ resonance $\Lambda(1405)$ and the $S_{11}(1535)$ nucleon resonance emerge as quasi-bound states of anti-kaon/nucleon and kaon/$\Sigma$-hyperon. Our approach to meson photoproduction introduces no new parameters. By adjusting a few finite range parameters we are able to simultaneously describe a large amount of low energy data. These include the cross sections of $K^-p$ elastic and inelastic scattering, the cross sections of eta meson and kaon photoproduction from nucleons as well as those of pion induced production of etas and kaons (16 different reaction channels altogether).

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