Complete Experiments for Pion Photoproduction
Lothar Tiator
TL;DR
This paper discusses the potential and limitations of model-independent partial wave analysis in meson photoproduction, emphasizing the minimal observables needed for effective analysis of nucleon resonances.
Contribution
It demonstrates that a truncated partial wave analysis with only five observables is feasible, reducing the complexity compared to full helicity amplitude analysis.
Findings
Helicity amplitudes require at least 8 polarization observables.
A truncated partial wave analysis can be performed with only 5 observables.
Minimal model assumptions suffice for effective analysis.
Abstract
The possibilities of a model-independent partial wave analysis for pion, eta or kaon photoproduction are discussed in the context of complete experiments. It is shown that the helicity amplitudes obtained from at least 8 polarization observables including beam, target and recoil polarization can not be used to analyze nucleon resonances. However, a truncated partial wave analysis, which requires only 5 observables will be possible with minimal model assumptions.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Nuclear physics research studies · Superconducting Materials and Applications