Electric dipole moments from Yukawa phases in supersymmetric theories

被引：28

作者：

Romanino, A

Strumia, A

机构：

[1] IST NAZL FIS NUCL,I-56126 PISA,ITALY

[2] UNIV AUTONOMA MADRID,DEPT FIS TEOR,E-28049 MADRID,SPAIN

来源：

NUCLEAR PHYSICS B | 1997年 / 490卷 / 1-2期

关键词：

electric dipole moment; supersymmetry; unification; gauge mediated supersymmetry breaking;

D O I：

10.1016/S0550-3213(97)00060-6

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study quark and electron EDMs generated by Yukawa couplings in supersymmetric models with different gauge groups, using the EDM properties under flavour transformations. In the MSSM (or if soft terms are mediated below the unification scale) the one-loop contributions to the neutron EDM are smaller than in previous computations based on numerical methods, although increasing as tan(3) beta. A neutron EDM close to the experimental limits can be generated in SU(5), if tan beta is large, through the u-quark EDM d(u), proportional to tan(4) beta. This effect has to be taken into account also in SO(10) with large tan beta, where d(u) is comparable to the d quark EDM, proportional to tan beta. (C) 1997 Elsevier Science B.V.

引用

页码：3 / 18

页数：16

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