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arXiv · hep-ex/9808024

Electroproduction of the Delta Resonance at High Momentum Transfer

V. V. Frolov et al
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Abstract

We studied the electroproduction of the Delta(1232) resonance via the reaction p(e,e'p)\pi0 at four-momentum transfers Qsq = 2.8 and 4.0 GeV^2. This is the highest Qsq for which exclusive resonance electroproduction has ever been observed. Decay angular distributions for Delta to p-pi0$ were measured over a wide range of barycentric energies covering the resonance. The $N-Δ$ transition form factor G*_M and ratios of resonant multipoles E{1+}/M{1+} and S{1+}/M{1+} were extracted from the decay angular distributions. These ratios remain small, indicating that perturbative QCD is not applicable for this reaction at these momentum transfers.

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V. V. Frolov et al. 1998-08-21. Electroproduction of the Delta Resonance at High Momentum Transfer. https://doi.org/10.1103/physrevlett.82.45

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