Best values for the CP-odd meson-nucleon couplings from supersymmetry

被引：75
|
作者：
Pospelov, M
机构：
[1] Univ Minnesota, Sch Phys & Astron, Inst Theoret Phys, Minneapolis, MN 55455 USA
[2] Univ Sussex, Ctr Theoret Phys, CPES, Brighton BN1 9QJ, E Sussex, England
来源：
PHYSICS LETTERS B | 2002年 / 530卷 / 1-4期
关键词：
D O I：
10.1016/S0370-2693(02)01263-7
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In the supersymmetric models, the dominant sources of the hadronic flavor-diagonal CP violation at low energy are the theta term and the chromoelectric dipole moments of quarks. Using QCD sum rules, we estimate the preferred range and the best values for the CP-odd meson-nucleon coupling constants induced by these operators. When the theta term is removed by the axion mechanism, the size of the most important isospin triplet pion-nucleon coupling is estimated to be (g) over bar ((1))(piNN) = 2 x 10(-12)((d) over tilde (u) - (d) over tilde (d)), where chromoelectric dipole moments are given in units of 10(-26) cm. (C) 2002 Published by Elsevier Science B.V.
引用
收藏
页码：123 / 128
页数：6
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