Quasi Yukawa fixed point due to decoupling of SUSY particles

被引：10

作者：

Kobayashi, T ^{[1
]}

Yamagishi, Y ^{[1
]}

机构：

[1] KANAZAWA UNIV,DEPT PHYS,KANAZAWA,ISHIKAWA 92011,JAPAN

来源：

PHYSICS LETTERS B | 1996年 / 381卷 / 1-3期

关键词：

D O I：

10.1016/0370-2693(96)00598-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study effects of SUSY particle decouplings on a quasi fixed point (QFP) of Yukawa coupling. From renormalization group analysis it is shown that if the SUSY breaking scale M(S) is large (greater than or similar to 1 TeV), effects of decoupling of Higgsinos and squarks raise the top Yukawa QFP. Tnis tendency is enhanced in most cases of non-universal SUSY breaking. For the case of M(S) less than or similar to 1 TeV, the decoupling of gluinos lowers m(t)(QFP). We checked some parameter dependencies for the top Yukawa QFP. The bottom-top Yukawa unified case is also studied. When top quark mass is measured more precisely, some patterns of soft mass spectra could be excluded if a rather large initial top Yukawa coupling is realized by the underlying theory.

引用

页码：169 / 176

页数：8

共 48 条

[21] ASPECTS OF GRAND UNIFIED MODELS WITH SOFTLY BROKEN SUPERSYMMETRY [J].