$γ^*p\toΔ$ Form Factors in QCD

V. M. Belyaev; A. V. Radyushkin

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arXiv · hep-ph/9508207

$γ^*p\toΔ$ Form Factors in QCD

V. M. Belyaev·A. V. Radyushkin

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Abstract

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 $G_E^*(Q^2) \to -G_M^*(Q^2)$.

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V. M. Belyaev, A. V. Radyushkin. 1995-08-01. $γ^*p\toΔ$ Form Factors in QCD. https://arxiv.org/abs/hep-ph/9508207

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