Exchange currents in octet hyperon charge radii
核理论
2008-11-26 v1 高能物理 - 唯象学
摘要
Octet hyperon charge radii are calculated in a chiral constituent quark model including electromagnetic exchange currents between quarks. In impulse approximation one observes a decrease of the hyperon charge radii with increasing strangeness. This effect is reduced by exchange currents. Due to exchange currents, the charge radius of the negatively charged hyperons are close to the proton charge radius.
引用
@article{arxiv.nucl-th/9809015,
title = {Exchange currents in octet hyperon charge radii},
author = {Georg Wagner and A. J. Buchmann and Amand Faessler},
journal= {arXiv preprint arXiv:nucl-th/9809015},
year = {2008}
}
备注
9 pages, 2 eps figures, RevTex, accepted for publication in Phys.Rev.C