Baryogenesis via relativistic bubble walls

Aleksandr Azatov, Miguel Vanvlasselaer, Wen Yin

Research output: Contribution to journalArticlepeer-review

Abstract

We present a novel mechanism which leads to the baryon asymmetry generation during the strong first order phase transition. If the bubble wall propagates with ultra-relativistic velocity, it has been shown [1] that it can produce states much heavier than the scale of the transition and that those states are then out of equilibrium. In this paper, we show that this production mechanism can also induce CP-violation at one-loop level. We calculate those CP violating effects during the heavy particle production and show, that combined with baryon number violating interactions, those can lead to successful baryogenesis. Two models based on this mechanism are constructed and their phenomenology is discussed. Stochastic gravitational wave signals turn out to be generic signatures of this type of models.

Original languageEnglish
Article number43
JournalJournal of High Energy Physics
Volume2021
Issue number10
DOIs
Publication statusPublished - 2021 Oct

Keywords

  • Beyond Standard Model
  • Cosmology of Theories beyond the SM
  • Higgs Physics
  • Spontaneous Symmetry Breaking

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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