IMPLICATIONS OF A LIGHT STOP FOR THE SPONTANOUS CP BREAKING AT FINITE-TEMPERATURE IN A NONMINIMAL SUPERSYMMETRIC MODEL

被引：15

作者：

COMELLI, D

PIETRONI, M

RIOTTO, A

机构：

[1] DESY,THEORY GRP,D-22603 HAMBURG,GERMANY

[2] IST NAZL FIS NUCL,SEZ TRIESTE,I-34014 TRIESTE,ITALY

[3] IST NAZL FIS NUCL,SEZ PADUA,I-35100 PADUA,ITALY

[4] CSIC,INST ESTRUCTURA MAT,E-28006 MADRID,SPAIN

来源：

PHYSICS LETTERS B | 1995年 / 343卷 / 1-4期

关键词：

D O I：

10.1016/0370-2693(94)01427-E

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the implications of a light stop for the spontaneous CP breaking at finite temperature in the Higgs sector of the Minimal Supersymmetric Standard Model with a gauge singlet. Assuming CP conservation at zero temperature, we show that the presence of a large mixing between the left- and the right-handed stops can trigger easily the spontaneous breaking of CP inside the bubbles nucleated during the electroweak phase transition. This allows to avoid the fine-tuning among the vacuum expectation values in the region of interest for the generation of the baryon asymmetry, namely the bubble walls, which has been recently analized.

引用

页码：207 / 213

页数：7

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[11] SUPERSYMMETRIC BARYOGENESIS [J].