HADRONIC PART OF THE MUON ANOMALOUS MAGNETIC-MOMENT - AN IMPROVED EVALUATION

被引：31

作者：

MARTINOVIC, L ^{[1
]}

DUBNICKA, S ^{[1
]}

机构：

[1] MOSCOW JOINT INST NUCL RES, 101000 MOSCOW, USSR

来源：

PHYSICAL REVIEW D | 1990年 / 42卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.42.884

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have done a new evaluation of the lowest-order hadronic vacuum-polarization contribution avac to the anomalous magnetic moment of the muon. The result is avac=(705276)×10-11 or avac=(7048115)×10-11 depending on the way in which the experimental systematic errors of the dominant two-pion contribution to avac are taken into account. The more pessimistic error, though numerically equal to the earlier result of Casas, Loacute;pez, and Ynduroacute;in, is still an improvement over the latter since it includes also the model error omitted in the previous analysis. The increased accuracy of avac has been achieved through the use of global analytic models of the pion and kaon form factors for the two-pion and the two-kaon contributions as well as due to new experimental information mainly for the three-pion channel. © 1990 The American Physical Society.

引用

页码：884 / 892

页数：9

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