Status of the lepton g-2 and effects of hadronic corrections

被引：24

作者：

Dorokhov, A. E. ^{[1
,2
]}

Radzhabov, A. E. ^{[3
]}

Zhevlakov, A. S. ^{[3
]}

机构：

[1] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Moscow Region, Russia

[2] Moscow MV Lomonosov State Univ, Bogoliubov Inst Theoret Problems Microworld, Moscow 119991, Russia

[3] Russian Acad Sci, Inst Syst Dynam & Control Theory, Siberian Branch, Irkutsk 664033, Russia

来源：

JETP LETTERS | 2014年 / 100卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

ANOMALOUS MAGNETIC-MOMENT; LIGHT SCATTERING CONTRIBUTION; MUON G-2; VA(V)OVER-TILDE CORRELATOR; VACUUM POLARIZATION; POLE TERMS; PSEUDOSCALAR; COUPLINGS; SCALAR;

D O I：

10.1134/S0021364014140045

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electron and muon anomalous magnetic moments (AMM) are measured in experiments and studied in the Standard Model (SM) with the highest precision accessible in particle physics. The comparison of the measured quantity with the SM prediction for the electron AMM provides the best determination of the fine structure constant. The muon AMM is more sensitive to the appearance of New Physics effects and, at present, there appears to be a three- to four-standard deviation between the SM and experiment. The lepton AMMs are pure relativistic quantum correction effects and therefore test the foundations of relativistic quantum field theory in general, and of quantum electrodynamics (QED) and SM in particular, with highest sensitivity. Special attention is paid to the studies of the hadronic contributions to the muon AMM which constitute the main source of theoretical uncertainties of the SM.

引用

页码：133 / 143

页数：11

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