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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

Paul M. Saffin paul.saffin@nottingham.ac.uk

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.

Journal Article Type Article
Publication Date May 30, 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
APA6 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), https://doi.org/10.1007/JHEP05%282018%29197
DOI https://doi.org/10.1007/JHEP05%282018%29197
Keywords CP violation; Cosmology of Theories beyond the SM; Lattice Quantum Field Theory; Nonperturbative Effects
Publisher URL https://link.springer.com/article/10.1007%2FJHEP05%282018%29197
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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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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