Electroweak Baryogenesis in Non-minimal Composite Higgs Models
By J. Espinosa, B. Gripaios, T. Konstandin, F. Riva. 2011
151 citations recorded by the source corpus.
We address electroweak baryogenesis in the context of composite Higgs models, pointing out that modifications to the Higgs and top quark sectors can play an important role in generating the baryon asymmetry. Our main observation is that composite Higgs models that include a light, gauge singlet scalar in the spectrum [as in the model based on the symmetry breaking pattern SO(6) → SO(5)], provide all necessary ingredients for viable baryogenesis. In particular, the singlet leads to a strongly first-order electroweak phase transition and introduces new sources of CP violation in dimension-five operators involving the top quark. We discuss the amount of baryon asymmetry produced and the experimental constraints on the model.
Subfields: Artificial Intelligence, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/2241a74b102049298bdc7947defcbdd889ca429c
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Citations in the corpus
- Composite scalar dark matter (2012, background): “It has been pointed out [51, 52] that a real singlet with the parity of eq.”
- Baryogenesis from the weak scale to the grand unification scale (2020, background): “The analysis of Espinosa et al. (2012) was carried out while assuming the upper bound (Hudson et al.”
- Electroweak phase transition and baryogenesis in composite Higgs models (2018, background): “This option was proposed in [7] but will not be considered further in this work as the nature of the electroweak phase transition in this case differs significantly from what we focus on.”