Computing techniques for two-loop corrections to anomalous magnetic moments of leptons

被引：3
|
作者：
Czarnecki, A
Krause, B
机构：
[1] Inst. für Theor. Teilchenphysik, Universität Karlsruhe
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1997年 / 389卷 / 1-2期
关键词：
standard model; Feynman diagram; anomalous magnetic moment;
D O I：
10.1016/S0168-9002(97)00113-7
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Two-loop electroweak corrections to the electron, muon, and tau lepton anomalous magnetic moments have been computed recently. Effects of hadronic contributions to the photon propagator in two-loop QED corrections have also been reanalysed. The common technique used in both calculations was asymptotic expansion of Feynman diagrams in the ratio of lepton mass to some heavy mass scale. In this talk we present some details of this method paying particular attention to the expansion of multi-scale diagrams.
引用
收藏
页码：314 / 317
页数：4
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