Evidence for a parity doublet Delta(1920)P_{33} and Delta(1940)D_{33}$ from γp\to pπ^0η

Details Evidence for a parity doublet Delta(1920)P_{33} and Delta(1940)D_{33}$ from γp\to pπ^0η Evidence for a parity doublet Delta(1920)P_{33} and Delta(1940)D_{33}$ from γp\to pπ^0η

2007-11-07

arxiv.org/abs/0711.1138v2

Phys.Rev.Lett.101:202002,2008

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 4 figures, 1 tables; completely revised version

Scientific paper

10.1103/PhysRevLett.101.202002

Evidence is reported for the existence of a parity doublet of Delta resonances with total angular momentum J=3/2 from photoproduction of the p pi^0 eta final state. The two parity partners Delta(1920)P_{33} and Delta(1940)D_{33} make significant contributions to the reaction. Cascades of resonances into Delta(1232) eta, N(1535) pi, and N a_0(980) are clearly observed.

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