2-LOOP ELECTROWEAK CORRECTIONS TO THE MUON G-2 - A NEW CLASS OF HADRONIC CONTRIBUTIONS

被引：129

作者：

PERIS, S ^{[1
]}

PERROTTET, M ^{[1
]}

DERAFAEL, E ^{[1
]}

机构：

[1] CERN,DIV THEORET PHYS,CH-1211 GENEVA 23,SWITZERLAND

来源：

PHYSICS LETTERS B | 1995年 / 355卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(95)00768-G

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss, within the framework of the Standard Model, the calculation of the two-loop electroweak contributions to the anomalous magnetic moment of the muon involving triangle fermionic loops of leptons and quarks. Because of the large ratios of masses involved, these contributions are rather large. The result we obtain differs from a previous estimate reported in the literature. The discrepancy originates in the cancellation of anomalies in SU(3)(c) x SU(2)(L) x U(1)(Y), a cancellation that requires the consideration of both leptons and quarks within each generation and that had been previously overlooked.

引用

页码：523 / 530

页数：8

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