| Published Articles | |
| Report number | CERN-TH-2017-096 ; arXiv:1704.08911 |
| Title | Is electroweak baryogenesis dead? |
| Related title | Is electroweak baryogenesis dead? |
| Author(s) | Cline, James M. (CERN ; McGill U.) |
| Collaboration | LHCb Collaboration |
| Publication | 2018-03-06 |
| Imprint | 2017-04-28 |
| Number of pages | 10 |
| Note | 10 pages, 7 figures. Talk presented at Moriond Electroweak (24 Mar. 2017) and Higgs Cosmology workshop, Kavli Royal Society Centre, Chichley Hall, UK (28 Mar. 2017); v2: added discussion of bubble wall shape and velocity and references; published version |
| In: | Philos. Trans. R. Soc. Lond. 376, 2114 (2018) pp.20170116 |
| In: | 52nd Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 18 - 25 Mar 2017, pp.339 |
| DOI | 10.1098/rsta.2017.0116 |
| Subject category | hep-ph ; Particle Physics - Phenomenology |
| Abstract | Electroweak baryogenesis is severely challenged in its traditional settings: the Minimal Supersymmetric Standard Model, and in more general two Higgs doublet models. Fine tuning of parameters is required, or large couplings leading to a Landau pole at scales just above the new physics introduced. The situation is somewhat better in models with a singlet scalar coupling to the Higgs so as to give a strongly first order phase transition due to a tree-level barrier, but even in this case no UV complete models had been demonstrated to give successful baryogenesis. Here we point out some directions that overcome this limitation, by introducing a new source of CP violation in the couplings of the singlet field. A model of electroweak baryogenesis requiring no fine tuning and consistent to scales far above 1 TeV is demonstrated, in which dark matter plays the leading role in creating a CP asymmetry that is the source of the baryon asymmetry. |
| Copyright/License | arXiv nonexclusive-distrib. 1.0 |
Corresponding record in: Inspire
Record creato 2017-05-02, modificato l'ultima volta il 2021-09-16
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