Photoproduction of pi^0 eta on protons and the Delta(1700)D_{33} resonance

Abstract

Total and differential cross sections for the reaction gamma p -> pi^o eta p have been measured with the Crystal Ball/TAPS detector using the tagged photon facility at the MAMI C accelerator in Mainz. In the energy range E_gamma=0.95-1.4 GeV the reaction is dominated by the excitation and sequential decay of the Delta(1700)D33 resonance. Angular distributions measured with high statistics allow us to determine the ratio of hadronic decay widths Γ_{ηΔ}/Γ_{πS11} and the ratio of the helicity amplitudes A_{3/2}/A_{1/2} for this resonance.

9 pages, 11 figures

References in corpus (8)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Baryonic Resonances from Baryon Decuplet-Meson Octet Interaction
• Upgrade of the Glasgow photon tagging spectrometer for Mainz MAMI-C
• Double pion photoproduction on nucleon and deuteron
• Chiral dynamics in the gamma p --> pi^0 eta p and gamma p --> pi^0 K^0 Sigma^+ reactions
• Nucleon resonance decay by the $K^0{\Sigma }^{+}$ channel
• Evidence for a parity doublet Delta(1920)P_{33} and Delta(1940)D_{33}$ from γp\to pπ^0η
• Analysis of angular distributions in gamma N \to pi0 eta N

Cited by in corpus (37)

• Baryon spectroscopy
• Threshold cusps and triangle singularities in hadronic reactions
• High statistics study of the reaction $\gamma p\to p{\pi }^0\eta$
• Dilepton production in proton-induced reactions at SIS energies with the GiBUU transport model
• Light Baryon Spectroscopy
• 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
• Study of the gamma p --> pi0 pi0 p reaction with the Crystal Ball/TAPS at the Mainz
• Measurement of the transverse target and beam-target asymmetries in $\eta$ meson photoproduction at MAMI
• Photoproduction of meson pairs: First measurement of the polarization observable I^s
• Photoproduction of ${\eta }^{\prime }$-mesons off the deuteron
• First measurement of the circular beam asymmetry in the gamma p --> pi0 eta p reaction
• Role of a triangle singularity in the $\pi N(1535)$ contribution to $\gamma p\to p{\pi }^0\eta$
• Isobar model analysis of pi0-eta photoproduction on protons
• 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
• Study of the $\gamma p\to {\pi }^0\eta p$ reaction with the A2 setup at MAMI
• Photoproduction ofeta-pi pairs off nucleons and deuterons
• Polarization observables in ${\pi }^0\eta$-photoproduction on the proton
• Coherent π0η photoproduction on s-shell nuclei
• First measurement of direct photoproduction of the $a_2(1320{)}^0$ meson on the proton
• Observation of a structure in the M${}_{p\eta }$ invariant mass distribution near 1700 MeV/$c^2$ in the $\gamma \mathbf{p}\to \mathbf{p}{\pi }^0\eta$ reaction
• 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
• Study of the partial wave structure of ${\pi }^0\eta$ photoproduction on protons
• Coherent photoproduction of the neutral pion and eta meson on the deuteron at incident energies below 1.15 GeV
• Partial wave expansion for photoproduction of two pseudoscalars on a nucleon
• Theoretical study of the $\gamma d\to {\pi }^0\eta d$ reaction
• Measurement of the beam-helicity asymmetry in photoproduction of ${\pi }^0\eta$ pairs on carbon, aluminum, and lead
• Search for the $N$(1685) in $\eta \pi$-Photoproduction
• The pd --> ^3He eta pi0 reaction at T_p = 1450 MeV
• Scalar isovector resonance photoproduction through the final state meson-meson interactions
• Chiral, parity-doublet, effective-Lagrangian mean-field theories for nuclear and astrophysical phenomenology
• Quasi-free photoproduction of pion-pairs off protons and neutrons
• Target and beam-target asymmetry measurements at MAMI