Is electroweak baryogenesis dead?

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.

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

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Cited by in corpus (15)

• Baryogenesis from the weak scale to the grand unification scale
• GUT Baryogenesis With Primordial Black Holes
• Exploring dynamical CP violation induced baryogenesis by gravitational waves and colliders
• The role of leptons in electroweak baryogenesis
• Quantisation Across Bubble Walls and Friction
• Gravitational wave and electroweak baryogenesis with two Higgs doublet models
• The Higgs field and early universe cosmology: a (brief) review
• Beyond the Standard Model Effective Field Theory: The Singlet Extended Standard Model
• Kaon oscillations and baryon asymmetry of the universe
• Electroweak phase transitions in multi-Higgs models: the case of Trinification-inspired THDSM
• The hydrodynamics of inverse phase transitions
• Electroweak Phase Transition in an Inert Complex Triplet Model
• Inverse bubbles from broken supersymmetry
• Thermodynamics of the Primordial Universe
• Gravitational waves from the sound shell model: direct and inverse phase transitions in the early Universe