COMMENTS ON THE NEUTRON ELECTRIC-DIPOLE MOMENT IN THE WEINBERG MODEL OF CP-VIOLATION

被引：16

作者：

CHENG, TP ^{[1
]}

LI, LF ^{[1
]}

机构：

[1] CARNEGIE MELLON UNIV,DEPT PHYS,PITTSBURGH,PA 15213

来源：

PHYSICS LETTERS B | 1990年 / 234卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(90)92022-B

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The calculation of neutron EDM due to the exchange of neutral Higgs bosons is reconsidered. We find that, contrary to previous claims, both the scalar and the pseudoscalar Higgs nucleon couplings are not dominated by the heavy-quark contributions. The relevant pseudoscalar coupling is calculated by using the recent EMC data on the nucleon matrix element of the axial vector current; the scalar coupling incorporates the information contained in the πN sigma-term. The need for a proper treatment of the strange quark operators between the nucleon states is emphasized. © 1990.

引用

页码：165 / 169

页数：5

共 21 条

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