Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-09-18
Phys.Rev.D78:123528,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages, 8 figures; some comments added, published version
Scientific paper
10.1103/PhysRevD.78.123528
We discuss some cosmological implications of extensions of the Standard Model with hidden sector scalars coupled to the Higgs boson. We put special emphasis on the conformal case, in which the electroweak symmetry is broken radiatively with a Higgs mass above the experimental limit. Our refined analysis of the electroweak phase transition in this kind of models strengthens the prediction of a strongly first-order phase transition as required by electroweak baryogenesis. We further study gravitational wave production and the possibility of low-scale inflation as well as a viable dark matter candidate.
Espinosa Jose Ramon
Konstandin Thomas
No Jose M.
Quiros Mariano
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