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The reaction $\gamma p\to p\pi^0\eta$ has been studied with the CBELSAdetector at the tagged photon beam of the Bonn electron stretcher facility. Thereaction shows contributions from $\Delta^+(1232)\eta$, $N(1535)^+\pi^0$ and$pa_0(980)$ as intermediate states. A partial wave analysis suggests that thereaction proceeds via formation of six $\Delta$ resonances,$\Delta(1600)P_{33}$, $\Delta(1920)P_{33}$, $\Delta(1700)D_{33}$,$\Delta(1940)D_{33}$, $\Delta(1905)F_{35}$, $\Delta(2360)D_{33}$, and twonucleon resonances $N(1880)P_{11}$ and $N(2200)P_{13}$, for which polepositions and decay branching ratios are given.

Study of the reaction $\gamma p\to p\pi^0\eta$