Affiliation:
1. Department of Physics, Shahid Beheshti University G.C., Evin, Tehran 19839, Iran
Abstract
The conventional baryogenesis mechanism is based on the one Higgs doublet within the Standard Model, at the electroweak scale T ~ 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: mH ≲ 40 GeV , which is contrary to the recently observed value mH ≃ 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.
Publisher
World Scientific Pub Co Pte Lt
Subject
Astronomy and Astrophysics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics
Cited by
11 articles.
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