Simulations of cold electroweak baryogenesis: dependence on the source of CP-violation
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 bi...
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| Format: | Article |
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Springer
2018
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| Online Access: | https://eprints.nottingham.ac.uk/52402/ |
| _version_ | 1848798717773086720 |
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| author | Mou, Zong-Gang Saffin, Paul M. Tranberg, Anders |
| author_facet | Mou, Zong-Gang Saffin, Paul M. Tranberg, Anders |
| author_sort | Mou, Zong-Gang |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T20:24:13Z |
| format | Article |
| id | nottingham-52402 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:24:13Z |
| publishDate | 2018 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-524022020-05-04T19:38:07Z https://eprints.nottingham.ac.uk/52402/ Simulations of cold electroweak baryogenesis: dependence on the source of CP-violation Mou, Zong-Gang Saffin, Paul M. Tranberg, Anders 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. Springer 2018-05-30 Article PeerReviewed Mou, Zong-Gang, Saffin, Paul M. and Tranberg, Anders (2018) Simulations of cold electroweak baryogenesis: dependence on the source of CP-violation. Journal of High Energy Physics, 2018 (5). 197/1-197/16. ISSN 1029-8479 CP violation; Cosmology of Theories beyond the SM; Lattice Quantum Field Theory; Nonperturbative Effects https://link.springer.com/article/10.1007%2FJHEP05%282018%29197 doi:10.1007/JHEP05(2018)197 doi:10.1007/JHEP05(2018)197 |
| spellingShingle | CP violation; Cosmology of Theories beyond the SM; Lattice Quantum Field Theory; Nonperturbative Effects Mou, Zong-Gang Saffin, Paul M. Tranberg, Anders Simulations of cold electroweak baryogenesis: dependence on the source of CP-violation |
| title | Simulations of cold electroweak baryogenesis: dependence on the source of CP-violation |
| title_full | Simulations of cold electroweak baryogenesis: dependence on the source of CP-violation |
| title_fullStr | Simulations of cold electroweak baryogenesis: dependence on the source of CP-violation |
| title_full_unstemmed | Simulations of cold electroweak baryogenesis: dependence on the source of CP-violation |
| title_short | Simulations of cold electroweak baryogenesis: dependence on the source of CP-violation |
| title_sort | simulations of cold electroweak baryogenesis: dependence on the source of cp-violation |
| topic | CP violation; Cosmology of Theories beyond the SM; Lattice Quantum Field Theory; Nonperturbative Effects |
| url | https://eprints.nottingham.ac.uk/52402/ https://eprints.nottingham.ac.uk/52402/ https://eprints.nottingham.ac.uk/52402/ |