THE ELECTROWEAK PHASE-TRANSITION WITH A SINGLET

被引：114

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

页码：98 / 105

页数：8

共 51 条

[41] RATE OF ANOMALOUS ELECTROWEAK BARYON AND LEPTON NUMBER VIOLATION AT FINITE TEMPERATURE [J].