Baryogenesis in the Zee-Babu model with arbitrary $\xi$ gauge
Abstract
We consider the baryogenesis picture in the Zee-Babu model. Our analysis shows that electroweak phase transition (EWPT) in the model is a first-order phase transition at the GeV scale, its strength ranges from 1 to 4.15 and the masses of charged Higgs boson are smaller than GeV. The EWPT is strengthened by only the new bosons and this strength is enhanced by arbitrary gauge. However, the gauge does not break the first-order EWPT or, in other words, the gauge is not the cause of the EWPT. This leads to the fact that the calculation of EWPT in Landau gauge is enough; and the latter may provide baryon-number violation (B-violation) necessary for baryogenesis in the relationship with nonequilibrium physics in the early universe.
Keywords
Cite
@article{arxiv.1511.00579,
title = {Baryogenesis in the Zee-Babu model with arbitrary $\xi$ gauge},
author = {Vo Quoc Phong and Nguyen Chi Thao and Hoang Ngoc Long},
journal= {arXiv preprint arXiv:1511.00579},
year = {2018}
}
Comments
16 pages, 2 figures; Matches published version in Phys. Rev. D