介子宽度对 ρ-ω 混合矩阵元动量依赖性的影响
核理论
2009-10-28 v4 高能物理 - 唯象学
摘要
以与模型无关的方式表明，ρ 与 ω 宽度的巨大差异给 ρ-ω 混合矩阵元带来了新的动量依赖性来源。由介子宽度产生的 q^2 依赖性导致对文献中通常讨论的零宽度近似所得结果的显著改变。这一强动量依赖性的起源在于 ρ 与 ω 介子宽度之差。
引用
@article{arxiv.nucl-th/9504026,
title = {Mesonic Width Effects on the Momentum Dependence of the Rho-Omega Mixing Matrix Element},
author = {M. J. Iqbal and Xuemin Jin and Derek B. Leinweber},
journal= {arXiv preprint arXiv:nucl-th/9504026},
year = {2009}
}
备注
9 pages. An additional figure illustrating the effect of a momentum dependent rho-meson width is included. This and related papers may also be obtained from http://www.phys.washington.edu/~derek/Publications.html