八阶电子 g-2 的修正值
高能物理 - 唯象学
2008-11-26 v2
摘要
利用由自动代码生成器生成的新 FORTRAN 代码,重新计算了一组不含闭合轻子圈的图对电子八阶反常磁矩 (g-2) 的贡献。通过比较新旧计算中各个图的贡献,我们发现旧处理中两个图的红外减除项存在不一致。修正此错误后,得到八阶项的修正值为 -1.9144 (35) (alpha/pi)^4。这一理论变化导致精细结构常数倒数的偏移量为 -6.41180(73)x10^{-7}。
关键词
引用
@article{arxiv.0706.3496,
title = {Revised value of the eighth-order electron g-2},
author = {T. Aoyama and M. Hayakawa and T. Kinoshita and M. Nio},
journal= {arXiv preprint arXiv:0706.3496},
year = {2008}
}
评论
4 pages, 1 figure, typo is corrected
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