E2 and C2 amplitudes for electroproduction of Δ
Abstract
We compute the amplitudes for the electromagnetic
γ
v
N→Δ
transition in the framework of soliton models with quarks and mesons. The ratios E2/M1 and C2/M1 as functions of the photon four-momentum squared are dominated by the contribution of the pion cloud and are in reasonable agreement with the available experimental data.