Recent developments in meson production analyses within a dynamical coupled-channels approach of J\"ulich-Athens-Washington model

The recent developments in the excited-baryon-analysis program by the J\"ulich-Athens/GA-Washington/DC Collaboration will be presented. The program's analysis is based on a dynamical coupled-channels approach developed by the Collaboration [1,2], where the basic symmetries, such as the two-body unitarity, analyticity, and gauge invariance are respected. In the hadronic reactions sector, the $\pi N$, $\eta N$, $K\Lambda$, and $K\Sigma$ channels are included, in addition to the effective $\pi\pi N$ channels $\sigma N$, $\rho N$, and $\pi\Delta$. Energies up to $\sqrt{s} = 2.2$ GeV are considered in the newest version. In the photon-induced reactions sector, the neutral and charged pion photoproduction processes are considered so far [2]. These are currently being extended to higher energies including the $\eta N$, $K\Lambda$, and $K\Sigma$ channels. Here, in particular, gauge invariance is enforced as dictated by the generalized Ward-Takahashi identity.\\[4pt] [1] D. R\"onchen \textit{et al.}, Eur.\ Phys.\ J.\ A \textbf{49}, 44 (2013).\\[0pt] [2] F. Huang \textit{et al.}, Phys.\ Rev.\ C \textbf{85}, 054003 (2012).