
Even if a `complete set' of experimental observables were measured for the elastic scattering or photo/electroproduction of pseudoscalar mesons, ambiguities would remain in the extracted partial-wave and isospin decomposed amplitudes. As these problems are not widely understood, the present work outlines the way model-dependence enters into analyses of data from both hadronic and electromagnetic facilities.
6 pages of text. Talk given at `N* physics and non-perturbative QCD', May 18 - 29, 1998, ECT*, Trento
Nuclear Theory (nucl-th), Nuclear Theory, FOS: Physical sciences
Nuclear Theory (nucl-th), Nuclear Theory, FOS: Physical sciences
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