An s-channel amplitude analysis of the reaction π+p→Δ++π0 using the dual absorptive model

The dual absorptive model proposed by Harari and extended by Loos and Matthews is shown to give a reasonable parameterisation of the available data on π⁺p→Δ⁺⁺π⁰ over the momentum range 4 – 13 GeV/c. The differential cross sections are well fitted using only the Δλ = 0 and Δλ = 1 amplitudes. Density matrix elements are compared with the model at 5.5 GeV/c.