A second Higgs doublet in the early universe: baryogenesis and gravitational waves

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Published 30 May 2017 © 2017 IOP Publishing Ltd and Sissa Medialab srl
, , Citation G.C. Dorsch et al JCAP05(2017)052 DOI 10.1088/1475-7516/2017/05/052

1475-7516/2017/05/052

Abstract

We show that simple Two Higgs Doublet models might still provide a viable explanation for the matter-antimatter asymmetry of the Universe via electroweak baryogenesis, even after taking into account the recent order-of-magnitude improvement on the electron-EDM experimental bound by the ACME Collaboration. Moreover we show that, in the region of parameter space where baryogenesis may be possible, the gravitational wave spectrum generated at the end of the electroweak phase transition is within the sensitivity reach of the future space-based interferometer LISA.

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