On the Extraction of Cross Sections for pi0 and eta Photoproduction off Neutrons from Deuteron Data

Abstract

We discuss the procedure of extracting the photoproduction cross section for neutral pseudoscalar mesons off neutrons from deuteron data. The main statement is that the final-state interaction (FSI) corrections for the proton and neutron target are in general not equal, but for pi0 production there are special cases were they have to be identical and there are large regions in the parameter space of incident photon energy and pion polar angle, θ^*, where they happen to be quite similar. The corrections for both target nucleons are practically identical for ${\pi }_0$ production in the energy range of the Delta(1232)3/2+ resonance due to the specific isospin structure of this excitation. Also above the $\Delta$-isobar range large differences between proton and neutron correction factors are only predicted for extreme forward angles (${\theta }^{\ast }$ < 20 deg), but the results are similar for larger angles. Numerical results for the gp-->pi0p and gn-->pi0n correction factors are discussed. Also the model description for the available data on the differential gd-->pi0pn cross sections are given.

16 pages, 5 figures; v2 fixed several minor typos

References in corpus (5)

• Quasifree photoproduction of $\eta$ mesons off protons and neutrons
• A narrow structure in the excitation function of eta-photoproduction off the neutron
• Incoherent pion photoproduction on the deuteron in the first resonance region
• Photoproduction of pi0-mesons off neutrons in the nucleon resonance region
• The role of pion exchange in $\eta$ meson photo production on the deuteron

Cited by in corpus (10)

• Photoproduction Reactions and Non-Strange Baryon Spectroscopy
• Cross Section for $\gamma n\to {\pi }^{0}n$ measured at Mainz/A2
• First measurement of the polarization observable $E$ and helicity-dependent cross sections in single ${\pi }^0$ photoproduction from quasi-free nucleons
• On the Photoproduction Reactions $\gamma d\to \pi NN$
• A three-body calculation of incoherent ${\pi }^0$ photoproduction on a deuteron
• Photoproduction of {\boldmath{${\pi }^0$}} Mesons off Protons and Neutrons in the Second and Third Nucleon Resonance Region
• Extraction of $\gamma n\to \pi N$ observables from deuteron-target data
• First measurement of helicity-dependent cross sections in pi0-eta photoproduction from quasi-free nucleons
• Single ${\pi }^0$ Production Off Neutrons Bound in Deuteron with Linearly Polarized Photons
• Photo- and Electro-excitation of Bound Neutrons and Protons