Quark-Hadron Duality and $γ^* p \to Δ$ Form Factors

V. M. Belyaev; A. V. Radyushkin

doi:10.1016/0370-2693(95)01048-u

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arXiv · hep-ph/9507337

Quark-Hadron Duality and $γ^* p \to Δ$ Form Factors

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. 1995-07-18. Quark-Hadron Duality and $γ^* p \to Δ$ Form Factors. https://doi.org/10.1016/0370-2693(95)01048-u

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