Comparisons of Model Predictions of Pion Electrioproduction Amplitudes in the low $Q^2$ Region

Abstract

Pion electroproduction amplitudes predicted by three theoretical models in the $Q^2\le 0.5$ (GeV/c)${}^2$ region are compared. The objective is to facilitate the analyses of the data from new experiments on investigating the pion cloud effects on the $\gamma N\to \Delta$ transition form factors.

Comments: 16 pages, 10 figures