Medium Effects in Coherent Pion Photo- and Electroproduction on 4He and 12C
Nuclear Theory
2011-07-19 v1
Abstract
Coherent pi0 photo- and electroproduction on 4He and 12C nuclei is investigated in the framework of a distorted wave impulse approximation in momentum space. The elementary process is described by the recently developed unitary isobar model. Medium effects are considered by introducing a phenomenological Delta self-energy. The recent experimental data for 4He and 12C can be well described over a wide range of energies and emission angles by the assumption that the Delta-nuclear interaction saturates.
Keywords
Cite
@article{arxiv.nucl-th/9906019,
title = {Medium Effects in Coherent Pion Photo- and Electroproduction on 4He and 12C},
author = {D. Drechsel and L. Tiator and S. S. Kamalov and Shin Nan Yang},
journal= {arXiv preprint arXiv:nucl-th/9906019},
year = {2011}
}
Comments
18 pages LaTeX including 7 postscript figures