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Meson production on the proton is described in a coupled channels K-matrixapproach. Both hadronic and photonic scenarios are taken into account on thesame theoretical footing. At tree-level the Born amplitudes are obtained froman effective Lagrangian with phenomenologically adjustable coupling constants.The spectral distributions, resonances and their width and the backgroundcontributions are obtained within the same approach, thus accounting properlyfor interference effects. Applications to omega- and associated strangenessproduction on the proton are discussed.Comment: 11 pages, 6 Figures, Proc. Int. Workshop NSTAR 2005 at Tallahassee,  Fl., Oct. 200

MESON PRODUCTION ON THE NUCLEON IN THE GIESSEN K-MATRIX APPROACH