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.

arXiv comment4 pages, 4 figures, 1 tables; completely revised version

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Cited by in corpus (32)

• Baryon spectroscopy
• Properties of baryon resonances from a multichannel partial wave analysis
• Progress Toward Understanding Baryon Resonances
• High statistics study of the reaction $\gamma p\to p{\pi }^0\eta$
• Photoproduction of pi^0 eta on protons and the Delta(1700)D_{33} resonance
• Light Baryon Spectroscopy
• Further evidence for N(1900)P_{13} from photoproduction of hyperons
• Photoproduction Reactions and Non-Strange Baryon Spectroscopy
• Photoproduction of pions and properties of baryon resonances from a Bonn-Gatchina partial wave analysis
• Photoproduction of mesons off nuclei
• Observation of two new $N^{\ast }$ resonances in $\psi (3686)\to p\bar{p}{\pi }^0$
• P-wave excited baryons from pion- and photo-induced hyperon production
• Photoproduction of meson pairs: First measurement of the polarization observable I^s
• Photoproduction of ${\eta }^{\prime }$-mesons off the deuteron
• Effects of a spin-flavour dependent interaction on the baryon mass spectrum
• Role of a triangle singularity in the $\pi N(1535)$ contribution to $\gamma p\to p{\pi }^0\eta$
• 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
• Partial wave analysis of $\psi (2S)\to p\bar{p}\eta$
• Coherent π0η photoproduction on s-shell nuclei
• Searching for the quark--diquark systematics of baryons composed by light quarks $q=u,d$
• 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
• First measurement of helicity-dependent cross sections in pi0-eta photoproduction from quasi-free nucleons
• Coherent photoproduction of the neutral pion and eta meson on the deuteron at incident energies below 1.15 GeV
• Theory of two-pion photo- and electroproduction off the nucleon
• Partial wave expansion for photoproduction of two pseudoscalars on a nucleon
• Theoretical study of the $\gamma d\to {\pi }^0\eta d$ reaction
• Quasi-free photoproduction of pion-pairs off protons and neutrons
• Target and beam-target asymmetry measurements at MAMI