Electroweak Baryogenesis with Vector-like Leptons and Scalar Singlets
High Energy Physics - Phenomenology
2019-10-08 v2
Abstract
We investigate the viability of electroweak baryogenesis in a model with a first order electroweak phase transition induced by the addition of two gauge singlet scalars. A vector-like lepton doublet is introduced in order to provide CP violating interactions with the singlets and Standard Model leptons, and the asymmetry generation dynamics are examined using the vacuum expectation value insertion approximation. We find that such a model is readily capable of generating sufficient baryon asymmetry while satisfying electron electric dipole moment and collider phenomenology constraints.
Cite
@article{arxiv.1903.11255,
title = {Electroweak Baryogenesis with Vector-like Leptons and Scalar Singlets},
author = {Nicole F. Bell and Matthew J. Dolan and Leon S. Friedrich and Michael J. Ramsey-Musolf and Raymond R. Volkas},
journal= {arXiv preprint arXiv:1903.11255},
year = {2019}
}
Comments
38 pages, 8 figures. Citations added. Benchmarks, figures and tables updated, error fixed in calculations. Matches version published in JHEP