Amplitude analysis and geometrical picture for Δ production processes

In this paper, a complete amplitude analysis is performed to obtain the double flip ? and A₂ contributions. As suggested by the geometrical picture the non-flip and the flip amplitudes are assumed to be identical to the ones already determined from πN and KN reactions up to t-independent real constants. Evidence for the validity of this assumption is given; SU(3) prediction works quite well with the experimental data on KN→KΔ processes.