$γ^*p\toΔ$ Form Factors in QCD

Physics – High Energy Physics – High Energy Physics - Phenomenology

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7 pages, uuencoded compressed .ps-file. (Contribution to the International Symposium and Workshop on Particle Theory and Pheno

Scientific paper

We use local quark-hadron duality to estimate the purely nonperturbative soft
contribution to the $\gamma^* p \to \Delta$ 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 $G_E^*(Q^2) \to -G_M^*(Q^2)$.

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