Photoproduction of Baryons Decaying into N pi and N eta
Abstract
A combined analysis of photoproduction data on γ p to π N, eta N was performed including the data on K Lambda and K Sigma. The data are interpreted in an isobar model with s--channel baryon resonances and pi, rho,(omega), K, and K* exchange in the t--channel. Three baryon resonances have a substantial coupling to eta N, the well known N(1535)S11, N(1720)P13, and N(2070)D15. The inclusion of data with open strangeness reveals the presence of further new resonances, N(1840)P11, N(1875)D13 and N(2170)D13.
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