Abstract
Fixed- t dispersion relations are used in a combined analysis of single pion photoproduction in the resonance and high-energy regions. Data are fitted from threshold to a centre-of-mass energy W of 2 GeV and for W from 2.6 to 5.6 GeV. In the resonance region, a partial-wave analysis is performed and 44 resonance couplings are evaluated. In the high-energy region, the imaginary parts of the amplitudes are parametrized in terms of Regge-pole exchanges and their trajectories and couplings are evaluated.
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