Abstract:
We have updated our multipole analyses to incorporate new data from the low-energy and delta resonance regions. We note a slight decrease in our estimate of the delta photo-decay amplitudes. This agrees with results found in Compton scattering. Our values are also in good agreement with a previous RPI determination. We have reexamined our determinations of the E2/M1 ratio at the resonance energy and at the pole. We find an E2/M1 ratio (at the pole) which is in good agreement with recent the Mainz value.
  • photon p: exclusive reaction
  • pi0: photoproduction
  • pi+: photoproduction
  • partial wave analysis: multipole
  • Delta(1232): radiative decay
  • Compton scattering
  • numerical calculations: interpretation of experiments
  • photon p --> p pi0
  • photon p --> n pi+
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