New class of solutions to the strong CP problem with a small two-loop θ -: art. no. 051901

被引:9
|
作者
Chang, D [1 ]
Keung, WY
机构
[1] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan
[2] Univ Illinois, Dept Phys, Chicago, IL 60607 USA
来源
PHYSICAL REVIEW D | 2004年 / 70卷 / 05期
关键词
D O I
10.1103/PhysRevD.70.051901
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present a new class of models which produce zero theta(QCD) angle at the tree and one-loop level due to Hermiticity of sub-blocks in the extended quark mass matrices. The structure can be maintained typically by nonAbelian generation symmetry. Two examples are given for this class of solutions.
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页码:051901 / 1
页数:5
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