CHIRAL ESTIMATE OF THE ELECTRIC-DIPOLE MOMENT OF THE NEUTRON IN QUANTUM CHROMODYNAMICS

被引：583

作者：

CREWTHER, RJ ^{[1
]}

DIVECCHIA, P ^{[1
]}

VENEZIANO, G ^{[1
]}

WITTEN, E ^{[1
]}

机构：

[1] HARVARD UNIV,LYMAN LAB PHYS,CAMBRIDGE,MA 02138

来源：

PHYSICS LETTERS B | 1979年 / 88卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(79)90128-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Current algebra for CP violating strong interactions is investigated. In particular, the neutron electric dipole moment Dn is shown to behave as θmπ21nmπ2 for small pion mass mπ and CP violating parameter θ. This logarithm is explicitly calculable: it contributes 5.2×10-16θ cm to Dn. This result is somewhat larger than a previous O(mπ2) estimate based on the bag model. © 1979.

引用

页码：123 / 127

页数：5

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