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

Abstract

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.

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

References in corpus (6)

• Extended Partial-Wave Analysis of piN Scattering Data
• Restoration of chiral and $U(1{)}_A$ symmetries in excited hadrons
• Highly Excited Mesons, Linear Regge Trajectories and the Pattern of the Chiral Symmetry Realization
• Baryon resonances and polarization transfer in hyperon photoproduction
• Parity Doubling Among the Baryons
• Delta resonances, quark models, chiral symmetry and AdS/QCD

Cited by in corpus (12)

• Light Baryon Spectroscopy
• Further evidence for N(1900)P_{13} from photoproduction of hyperons
• P-wave excited baryons from pion- and photo-induced hyperon production
• Evaluation of the polarization observables I^S and I^C in the reaction gamma p --> pi^0 eta p
• Measurement of the beam-helicity asymmetry $I^{\odot }$ in the photoproduction of ${\pi }^0{\pi }^{\pm }$-pairs off protons and off neutrons
• Photoproduction ofeta-pi pairs off nucleons and deuterons
• First measurement of direct photoproduction of the $a_2(1320{)}^0$ meson on the proton
• First measurement of target and beam-target asymmetries in the $\gamma p\to {\pi }^0\eta p$ reaction
• Minimal complete sets for two pseudoscalar meson photoproduction
• Coherent photoproduction of the neutral pion and eta meson on the deuteron at incident energies below 1.15 GeV
• Theoretical study of the $\gamma d\to {\pi }^0\eta d$ reaction
• Target and beam-target asymmetry measurements at MAMI