Revised α4 term of lepton g-2 from the Feynman diagrams containing an internal light-by-light scattering subdiagram -: art. no. 021803

被引：64

作者：

Kinoshita, T ^{[1
]}

Nio, M

机构：

[1] Cornell Univ, Lab Elementary Particle Phys, Ithaca, NY 14853 USA

[2] RIKEN, Theoret Phys Lab, Wako, Saitama 3510198, Japan

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.90.021803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The alpha(4) contribution to the lepton g-2 from a gauge-invariant set of 18 Feynman diagrams containing a light-by-light scattering subdiagram internally has been reevaluated by a method independent of the previous approach. Comparison of two methods revealed a program error in the first version. Correcting this error, the contributions of these 18 diagrams become -0.990 72(10)(alpha/pi)(4) and -4.432 43(58)(alpha/pi)(4) for the electron and muon g-2, respectively. The correction is not large enough to affect the comparison between theory and experiment for the muon g-2, but it does alter the inferred value for the fine structure constant alpha(-1) by 6 ppb.

引用

页数：4

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