IMPROVED DETERMINATION OF THE FINE-STRUCTURE CONSTANT BASED ON THE ELECTRON G-2 AND MUONIUM HYPERFINE-STRUCTURE

被引：22

作者：

KINOSHITA, T

机构：

[1] Newman Laboratory, Cornell University, Ithaca

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1995年 / 44卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1109/19.377891

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Preliminary results of two accurate determinations of the fine struture constant alpha based on quantum electrodynamics are reported. One is obtained from an improved evaluation of the sixth-order and eighth-order radiative corrections to the electron anomalous magnetic moment a(e). This leads to the most accurate value of alpha obtained thus far, with an uncertainty of about 0.005 part per million (ppm). The other is the outcome of an evaluation of the complete alpha(2)(Z alpha) contribution and the leading alpha(4) and alpha(3)(m(e)/m(mu)) contributions to the hyperfine structure of the muonium ground state. This gives a value of alpha with an uncertainty of 0.134 ppm. These results also lead to the most accurate determination of the muon mass.

引用

页码：498 / 500

页数：3

共 24 条

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