Quark-hadron duality and γ∗p → Δ form factors

We use local quark-hadron duality to estimate the purely nonperturbative soft contribution to the γ∗p → Δ form factors. Our results are in agreement with existing experimental data. We predict that the ratio GE∗(Q2)GM∗(Q2) is small for all accessible Q2, in contrast to the pQCD expectations that GE∗(Q2) → −GM∗(Q2).