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

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

1995-07-18

arxiv.org/abs/hep-ph/9507337v1

Phys.Lett. B359 (1995) 194-200

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, LaTeX + 4 PS-figures enclosed in one uuencoded, compressed file

Scientific paper

10.1016/0370-2693(95)01048-U

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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