核子电磁散射因子：从空虚态到时空态
高能物理 - 唯象学
2009-10-30 v1 核理论
摘要
I discuss how dispersion relations can be used to analyse the nucleon electromagnetic form factors, with particular emphasis on the constraints from unitarity and pQCD. Results for nucleon radii, vector-meson couplings, the onset of pQCD and bounds on the strangeness form factors are presented. The em form factors in the time-like region reveal some interesting physics which is not yet understood in full detail. The need for a better data basis at low, intermediate and large momentum transfer and also in the time-like region is stressed.
引用
@article{arxiv.hep-ph/9611424,
title = {Nucleon form factors: From the space-like to the time-like region},
author = {Ulf-G. Meißner},
journal= {arXiv preprint arXiv:hep-ph/9611424},
year = {2009}
}
备注
11 pp, LaTeX, uses epsf and espcrc1.sty, 6 figures, invited talk, DAPHCE 96, Frascati, November 1996, to appear in the proceedings (Nucl. Phys. A)