Electroweak baryogenesis: concrete in a SUSY model with a gauge singlet

被引：140

作者：

Huber, SJ

Schmidt, MG

机构：

[1] Inst Theoret Phys, D-69120 Heidelberg, Germany

[2] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA

来源：

NUCLEAR PHYSICS B | 2001年 / 606卷 / 1-2期

关键词：

D O I：

10.1016/S0550-3213(01)00250-4

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：

SUSY models with a gauge singlet easily allow for a strong first order electroweak phase transition (EWPT) if the vevs of the singlet and Higgs fields are of comparable size. We discuss the profile of the stationary expanding bubble wall and CP-violation in the effective potential, in particular transitional CP-violation inside the bubble wall during the EWPT. The dispersion relations for charginos contain CP-violating terms in the WKB approximation. These enter as source terms in the Boltzmann equations for the (particle-antiparticle) chemical potentials and fuel the creation of a baryon asymmetry through the weak sphaleron in the hot phase. This is worked out for concrete parameters. (C) 2001 Published by Elsevier Science B.V.

引用

页码：183 / 230

页数：48

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