The dark side of the electroweak phase transition

Subinoy Das, Patrick J. Fox, Abhishek Kumar, Neal Weiner

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Recent data from cosmic ray experiments may be explained by a new GeV scale of physics. In addition the fine-tuning of supersymmetric models may be alleviated by new O(GeV) states into which the Higgs boson could decay. The presence of these new, light states can affect early universe cosmology. We explore the consequences of a light (∼ GeV) scalar on the electroweak phase transition. We find that trilinear interactions between the light state and the Higgs can allow a first order electroweak phase transition and a Higgs mass consistent with experimental bounds, which may allow electroweak baryogenesis to explain the cosmological baryon asymmetry. We show, within the context of a specific supersymmetric model, how the physics responsible for the first order phase transition may also be responsible for the recent cosmic ray excesses of PAMELA, FERMI etc. We consider the production of gravity waves from this transition and the possible detectability at LISA and BBO.

    Original languageEnglish (US)
    Article number108
    JournalJournal of High Energy Physics
    Volume2010
    Issue number11
    DOIs
    StatePublished - 2010

    Keywords

    • Cosmology of theories beyond the SM
    • Higgs physics

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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