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This talk is on a refined investigation on light flavor meson-baryonscatterings, using a dynamical coupled-channel approach, i.e. the J\"ulich-Bonnmodel. The previous channel space of $\pi N$, $\pi \Delta$, $\sigma N$, $\rhoN$, $\eta N$, $K \Lambda$ and $K \Sigma$ is extended by adding the $\omega N$final state. The spectra of $N^*$ and $\Delta$ resonances are extracted, basedon the result of a global fit to a worldwide collection of data, in the energyregion from the $\pi N$ threshold to center-of-mass energy $z=2.3$ GeV(approximately $300$ parameters against $9000$ data points). A negative valueof the $\omega N$ elastic spin-averaged scattering length has been extracted.

The reaction $\pi N \to \omega N$ in a dynamical coupled-channel approach