SUPPRESSION OF PROTON DECAY IN THE MISSING-PARTNER MODEL FOR SUPERSYMMETRIC SU(5) GUT

被引：83

作者：

HISANO, J

MOROI, T

TOBE, K

YANAGIDA, T

机构：

[1] Department of Physics, Tohoku University, Sendai

来源：

PHYSICS LETTERS B | 1995年 / 342卷 / 1-4期

关键词：

D O I：

10.1016/0370-2693(94)01342-A

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We construct a missing-partner model for supersymmetric SU(5) GUT assuming the Peccei-Quinn symmetry, in which the SU(5) gauge coupling constant remains in the perturbative regime below the gravitational scale similar to 2.4 x 10(18) GeV. The Peccei-Quinn symmetry suppresses the dangerous dimension-five operators for the nucleon decay much below the limit from the present proton-decay experiments. We also stress that due to this suppression mechanism our model can accommodate even the large tan beta(H) (similar to 60) scenario which has been recently suggested to explain the observed value of the m(b)/m tau ratio.

引用

页码：138 / 144

页数：7

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