Towards a model-independent partial wave analysis for pseudoscalar meson photoproduction

Abstract

Amplitude and partial wave analyses for pion, eta or kaon photoproduction are discussed in the context of `complete experiments'. It is shown that the model-independent helicity amplitudes obtained from at least 8 polarization observables including beam, target and recoil polarization can not be used to determine underlying resonance parameters. However, a truncated partial wave analysis, which theoretically requires only 5 observables will be possible with minimal model input.

Proc. of NSTAR2011, 6 pages, 1 figure

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• Amplitude- and truncated partial-wave analyses combined: A novel, almost theory-independent single-channel method for extracting photoproduction multipoles directly from measured data
• A Truncated partial wave analysis of a complete experiment for photoproduction of two pseudoscalar mesons on a nucleon
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