THE ELECTROWEAK PHASE-TRANSITION WITH A SINGLET

被引：110
|
作者：
ESPINOSA, JR
QUIROS, M
机构：
[1] Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Serrano
来源：
PHYSICS LETTERS B | 1993年 / 305卷 / 1-2期
关键词：
D O I：
10.1016/0370-2693(93)91111-Y
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the electroweak phase transition in the minimal extension of the Standard Model: an extra complex singlet with zero vacuum expectation value. The first-order phase transition is strengthened by the cubic term triggered in the one-loop effective potential by the extra boson. Plasma effects are considered to leading order: they shield the cubic terms and weaken the first-order phase transition. We find a region in the parameter space where baryon asymmetry washout is avoided for Higgs masses consistent with present experimental bounds. However in that region the theory becomes non-perturbative for scales higher than 10(10) GeV.
引用
收藏
页码：98 / 105
页数：8
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