STRONG AND WEAK CP IN A MODEL WITH A NEW GAUGED U(1) SYMMETRY

被引：30

作者：

FRAMPTON, PH

NG, D

机构：

[1] Institute of Field Physics, Department of Physics and Astronomy, University of North Carolina, Chapel Hill

来源：

PHYSICAL REVIEW D | 1991年 / 43卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.43.3034

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss a natural solution to the strong CP problem with spontaneous CP breaking in the context of SU(c)(3) x SU(L)(2) x U(Y)(1) x U(new)(1) with two vectorlike quarks. The gauged U(new)(1) symmetry is imposed such that theta-BAR remains zero at the tree level when CP and U(new)(1) are broken by singlet Higgs scalars. Flavor-changing neutral currents at the tree level are naturally suppressed because only singlet Higgs scalars are introduced. In order to agree with the experimental measurement of epsilon and epsilon'/epsilon, we find that the CP-breaking scale and the masses of the new quarks are less than 2.0 TeV and 530 GeV, respectively.

引用

页码：3034 / 3039

页数：6

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