New Results on Baryon Spectroscopy from MAMI

An overview of the MAMI-C electron accelerator facility (E0 = 1.6 GeV) and the experimental setups of the A1 and A2 collaborations for electro- and photoproduction reactions is given. Several experimental results and their interpretations for baryon spectroscopy are discussed. The topics presented here are the beam-helicity asymmetry I· for ππ photoproduction in the second resonance region, the photoproduction of π0η up to beam energies of ω = 1.4 GeV as a way to study the Δ(1700)D33 baryon, and polarisation observables in h electro- and photoproduction in order to investigate an unexpected s-d-wave phase shift and its possible implications for the nature of the S11(1535) resonance.