Photocouplings at the pole from pion photoproduction

The reactions gamma p -> pi(0)p and gamma p -> pi(+)n are analyzed in a semi-phenomenological approach up to E similar to 2.3 GeV. Fits to differential cross section and single- and double-polarization observables are performed. A good overall reproduction of the available photoproduction data is achieved. The Julich2012 dynamical coupled-channel model -which describes elastic pi N scattering and the world data base of the reactions pi N -> eta N, K Lambda, and K Sigma at the same time- is employed as the hadronic interaction in the final state. The framework guarantees analyticity and, thus, allows for a reliable extraction of resonance parameters in terms of poles and residues. In particular, the photocouplings at the pole can be extracted and are presented.