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Simulations of cold electroweak baryogenesis: dependence on the source of CP-violation

Mou, Zong-Gang; Saffin, Paul M.; Tranberg, Anders

Authors

Zong-Gang Mou

Anders Tranberg



Abstract

We compute the baryon asymmetry created in a tachyonic electroweak symmetry breaking transition, focusing on the dependence on the source of effective CP-violation. Earlier simulations of Cold Electroweak Baryogenesis have almost exclusively considered a very specific CP-violating term explicitly biasing Chern-Simons number. We compare four different dimension six, scalar-gauge CP-violating terms, involving both the Higgs field and another dynamical scalar coupled to SU(2) or U(1) gauge fields. We find that for sensible values of parameters, all implementations can generate a baryon asymmetry consistent with observations, showing that baryogenesis is a generic outcome of a fast tachyonic electroweak transition.

Citation

Mou, Z., Saffin, P. M., & Tranberg, A. (2018). Simulations of cold electroweak baryogenesis: dependence on the source of CP-violation. Journal of High Energy Physics, 2018(5), Article 197. https://doi.org/10.1007/JHEP05%282018%29197

Journal Article Type Article
Acceptance Date May 26, 2018
Publication Date May 30, 2018
Deposit Date Jun 14, 2018
Publicly Available Date Jun 14, 2018
Journal Journal of High Energy Physics
Electronic ISSN 1029-8479
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 2018
Issue 5
Article Number 197
DOI https://doi.org/10.1007/JHEP05%282018%29197
Keywords CP violation; Cosmology of Theories beyond the SM; Lattice Quantum Field Theory; Nonperturbative Effects
Public URL https://nottingham-repository.worktribe.com/output/934685
Publisher URL https://link.springer.com/article/10.1007%2FJHEP05%282018%29197

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0


JHEP05(2018)197.pdf (1.7 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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