Baryogenesis within the two-Higgs-doublet model in the electroweak scale

被引：18

作者：

Ahmadvand, M. ^{[1
]}

机构：

[1] Shahid Beheshti Univ, Dept Phys, Tehran 19839, Iran

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2014年 / 29卷 / 20期

关键词：

Baryogenesis; CP violation; two-Higgs-doublet model; baryon number violation; electroweak phase transition; PHASE-TRANSITION; CHARGE ASYMMETRY; CP-VIOLATION; DECAY;

D O I：

10.1142/S0217751X14500900

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The conventional baryogenesis mechanism is based on the one Higgs doublet within the Standard Model, at the electroweak scale T similar to 100 GeV. In this model, the strong first-order phase transition due to the spontaneous symmetry breaking imposes the following condition on the mass of the Higgs field: m(H) less than or similar to 40 GeV, which is contrary to the recently observed value m(H) similar or equal to 126 GeV. In this paper, we propose a baryogenesis mechanism within a two-Higgs-doublet model in which the phase transition occurs in one stage. This model is consistent with the observed mass of the Higgs. We obtain the true vacuum bubble wall velocity and thickness in this model. Then, we use nonlocal baryogenesis mechanism in which the interaction of fermions with the boundary of the expanding bubbles leads to CP violation and sphaleron mediated baryogenesis.

引用

页数：19

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