Realistic quark and lepton masses through SO(10) symmetry

被引:26
作者
Babu, KS [1 ]
Barr, SM [1 ]
机构
[1] UNIV DELAWARE,BARTOL RES INST,NEWARK,DE 19716
来源
PHYSICAL REVIEW D | 1997年 / 56卷 / 05期
关键词
D O I
10.1103/PhysRevD.56.2614
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In a recent paper a model of quark and lepton masses was proposed. Without any family symmetries almost all the qualitative and quantitative features of the quark and lepton masses and Kobayashi-Maskawa mixing angles are explained, primarily as consequences of various aspects of SO(10) symmetry. Here the model is discussed in much greater detail. The threefold mass hierarchy as well as the relations m(tau)(0) similar or equal to m(b)(0), m(mu)(0) similar or equal to 3m(s)(0), m(e)(0) similar or equal to 1/3 m(d)(0), m(u)(0)/m(t)(0) much less than m(d)(0)/m(b)(0), tan theta(C) similar or equal to root m(d)(0)/m(s)(0), V(cb)much less than root m(s)(0)/m(b)(0), and V-ub similar to VusVcb follow from a simple Yukawa structure at the unification scale. The model also gives definite predictions for tan beta, the neutrino mixing angles, and proton decay branching ratios. The (nu(mu)-nu(tau)) mixing angle is typically large, tan beta is close to either m(t)(0)/m(b)(0) or m(c)(0)/m(s)(0), and proton decay is in the observable range, but there is a group-theoretical suppression factor in the rate.
引用
收藏
页码:2614 / 2631
页数:18
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