Year: 2005
Type: article
Abstract: We develop a Lorentz- and gauge-invariant dynamical model for pion electroproduction in the resonance region. The model is based on solving the Salpeter (instantaneous) equation for the pion-nucleon interaction with a hadron-exchange potential. We find that the one-particle-exchange kernel of the Salpeter equation for pion electroproduction develops an unphysical singularity for a finite value of ${Q}^{2}$. We analyze two methods of dealing with this problem. Results of our model are compared with recent single-polarization data for pion electroproduction.
Source: Physical Review C
Authors: George L. Caia, Louis E. Wright, Vladimir Pascalutsa
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2013278080