New two-loop contribution to electric dipole moments in supersymmetric theories

被引：270

作者：

Chang, D ^{[1
]}

Keung, WY

Pilaftsis, A

机构：

[1] Natl Tsing Hua Univ, NCTS, Hsinchu 30043, Taiwan

[2] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30043, Taiwan

[3] Fermi Natl Accelerator Lab, Batavia, IL 60510 USA

[4] Univ Illinois, Dept Phys, Chicago, IL 60607 USA

[5] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.82.900

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate a new type of two-loop contribution to the electric dipole moments of the electron and neutron in supersymmetric theories. The new contributions are originated from the potential CP violation in the trilinear couplings of the Higgs bosons to the scalar-top or the scalar-bottom quarks. These couplings did not receive stringent constraints directly. The electric dipole moments are induced through a mechanism analogous to that due to Barr and Zee [Phys. Rev. Lett. 65, 21 (1990)]. We find observable effects for a sizable portion of the parameter space related to the third generation scalar quarks in the minimal supersymmetric standard model which cannot be excluded by earlier considerations.

引用

页码：900 / 903

页数：4

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