$γ^*p\toΔ$ Form Factors in QCD
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We use local quark-hadron duality to estimate the purely nonperturbative soft contribution to the $γ^* p \to Δ$ form factors. Our results are in agreement with existing experimental data. We predict that the ratio $G_E^*(Q^2)/G_M^*(Q^2)$ is small for all accessible $Q^2$, in contrast to the pQCD expectations that $G_E^*(Q^2) \to -G_M^*(Q^2)$.
7 pages, uuencoded compressed .ps-file. (Contribution to the International Symposium and Workshop on Particle Theory and Phenomenology at Iowa State University, Ames, May 22-24)
7 pages, uuencoded compressed .ps-file. (Contribution to the International Symposium and Workshop on Particle Theory and Phenomenology at Iowa State University, Ames, May 22-24)