Problems for supersymmetry breaking by the dilaton in strings from charge and color breaking

被引：68

作者：

Casas, JA ^{[1
]}

Lleyda, A ^{[1
]}

Munoz, C ^{[1
]}

机构：

[1] UNIV AUTONOMA MADRID,DEPT FIS TEOR 111,E-28049 MADRID,SPAIN

来源：

PHYSICS LETTERS B | 1996年 / 380卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(96)00489-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The general constraints on the parameter space of soft-breaking terms, in order to avoid dangerous charge and color breaking minima, are applied to the four-dimensional string scenario where the dilaton is the source of supersymmetry breaking (dilaton-dominated limit). The results indicate that the whole parameter space is essentially excluded on these grounds after imposing the present experimental data on the top mass. The inclusion of a non-vanishing cosmological constant does not improve substantially the prospects. Possible way-outs to this situation are briefly discussed.

引用

页码：59 / 67

页数：9

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