ON THE ELECTROWEAK PHASE-TRANSITION IN THE MINIMAL SUPERSYMMETRIC STANDARD MODEL

被引：123

作者：

ESPINOSA, JR ^{[1
]}

QUIROS, M ^{[1
]}

ZWIRNER, F ^{[1
]}

机构：

[1] CERN,DIV THEORY,CH-1211 GENEVA 23,SWITZERLAND

来源：

PHYSICS LETTERS B | 1993年 / 307卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(93)90199-R

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the finite-temperature effective potential of the Minimal Supersymmetric Standard Model, in the limit of only one light Higgs boson. Because of the large top Yukawa coupling, there can be significant differences with respect to the Standard Model case: for given values of the Higgs and top masses, little supersymmetry breaking in the stop sector can make the phase transition more strongly first-order. After including the full structure of the stop mass matrix, the most important experimental constraints and the leading plasma effects, we find that the present limits on Higgs and squark masses are still compatible with the scenario of electroweak baryogenesis, in a small region of parameter space corresponding to m(h) less than or similar too 70 GeV and m(b1)approximately less than or similar to 105 GeV.

引用

页码：106 / 115

页数：10

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