Relativistic pionic effects in quasielastic electron scattering
摘要
The impact of relativistic pionic correlations and meson-exchange currents on the response functions for electromagnetic quasielastic electron scattering from nuclei is studied in detail. Results in first-order perturbation theory are obtained for one-particle emission electronuclear reactions within the context of the relativistic Fermi gas model. Improving upon previous analyses where non-relativistic reductions of the currents were performed, here a fully relativistic analysis in which both forces and currents are treated consistently is presented. Lorentz covariance is shown to play a crucial role in enforcing the gauge invariance of the theory. Effects stemming uniquely from relativity in the pionic correlations are identified and, in particular, a comprehensive study of the self-energy contributions and of the currents associated with the pion is presented. First- and second-kind scaling for high momentum transfer is investigated.
引用
@article{arxiv.nucl-th/0106035,
title = {Relativistic pionic effects in quasielastic electron scattering},
author = {J. E. Amaro and M. B. Barbaro and J. A. Caballero and T. W. Donnelly and A. Molinari},
journal= {arXiv preprint arXiv:nucl-th/0106035},
year = {2008}
}
备注
43 pages, 21 figures