Can ε′/ε be supersymmetric?

被引：127

作者：

Masiero, A

Murayama, H

机构：

[1] SISSA, I-34014 Trieste, Italy

[2] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy

[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.83.907

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Supersymmetric contributions to epsilon(I)/epsilon have been generally regarded as small. We point out, however, that this is based on specific assumptions, such as universal scalar mass, and in general need not be true. Based on (1) hierarchical quark Yukawa matrices protected by flavor symmetry, (2) generic dependence of Yukawa matrices on Polonyi/moduli fields as expected in many supergravity/superstring theories, (3) Cabibbo rotation originating from the down-sector, and (4) phases of order unity, we find the typical supersymmetric contribution to epsilon(I)/epsilon to be of order 3 x 10(-3) for m((q) over bar) = 500 GeV, possibly dominating the reported KTeV Collaboration value epsilon(I)/epsilon = (28 +/- 4.1) X 10(-4). If so, the neutron electric dipole moment is likely to be within the reach of the currently planned experiments.

引用

页码：907 / 910

页数：4

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