Phenomenological viability of string and M-theory scenarios

被引：20

作者：

Casas, JA

Ibarra, A

Muñoz, C

机构：

[1] CSIC, Inst Estructura Mat, E-28006 Madrid, Spain

[2] Univ Autonoma Madrid, Dept Fis Teor C11, E-28049 Madrid, Spain

[3] Univ Autonoma Madrid, Inst Fis Teor, E-28049 Madrid, Spain

来源：

NUCLEAR PHYSICS B | 1999年 / 554卷 / 1-2期

关键词：

charge and color breaking; string models; M-theory models;

D O I：

10.1016/S0550-3213(99)00065-6

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We analyze the constraints that a correct phenomenology and the absence of dangerous charge and colour breaking (CCB) minima or unbounded from below (UFB) directions impose on the parameter space of different superstring and M-theory scenarios. Namely,we analyze in detail the case where supersymmetry (SUSY) breaking is driven by non-vanishing dilaton and/or moduli F-terms in weakly and strongly coupled strings, and the specific case where the mechanism of SUSY breaking is gaugino condensation with or without the participation of non-perturbative contributions to the Kahler potential. The results indicate that, only in some small windows of the parameter space all the previous tests are successfully passed. We also discuss the impact of non-universality of the soft breaking terms on CCB/UFB bounds. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：67 / 85

页数：19

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[1] The MSSM at the low tanβ fixed point is meta-stable [J].