Study of the reaction $γp\to pπ^0η$

Details Study of the reaction $γp\to pπ^0η$ Study of the reaction $γp\to pπ^0η$

2008-06-26

arxiv.org/abs/0806.4251v1

Eur.Phys.J.A38:173-186,2008

Physics

Nuclear Physics

Nuclear Experiment

13 pages, 10 figures, 7 tables

Scientific paper

10.1140/epja/i2008-10657-7

The reaction $\gamma p\to p\pi^0\eta$ has been studied with the CBELSA detector at the tagged photon beam of the Bonn electron stretcher facility. The reaction shows contributions from $\Delta^+(1232)\eta$, $N(1535)^+\pi^0$ and $pa_0(980)$ as intermediate states. A partial wave analysis suggests that the reaction 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 two nucleon resonances $N(1880)P_{11}$ and $N(2200)P_{13}$, for which pole positions and decay branching ratios are given.

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