LOW ALPHA(STRONG)(M(Z)), INTERMEDIATE SCALE SUSY SO(10) AND ITS IMPLICATIONS

被引:26
作者
BRAHMACHARI, B [1 ]
MOHAPATRA, RN [1 ]
机构
[1] UNIV MARYLAND,DEPT PHYS,COLLEGE PK,MD 20742
基金
美国国家科学基金会;
关键词
D O I
10.1016/0370-2693(95)00968-Q
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We show that one of the ways of obtaining consistency between the idea of supersymmetric grand unification and an apparent low value of alpha(strong)(M(z)) similar or equal to .11 indicated by several low energy experiments is to have an intermediate scale corresponding to a local B - L symmetry breaking around the mass scale of 10(10) to 10(12) GeV. We discuss the realization of this idea within the framework of supersymmetric SO(10) grand unified theories with spectra of particles derivable from simple superstring-inspired versions of this model. We then study the b - tau mass unification within this class of models and show that due to the influence of new gauge and Yukawa interactions beyond the intermediate scale, the prediction of the b-quark mass comes out well within the presently accepted values. We also discuss an unorthodox class of SUSY models, inspired by some theoretical considerations, having two pairs of Higgs doublets at low energy and show that they also can lead to unification with intermediate scales and low alpha(s)(M(z)) as desired.
引用
收藏
页码:566 / 572
页数:7
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