Dark matter freeze-out in a nonrelativistic sector

Duccio Pappadopulo, Joshua T. Ruderman, Gabriele Trevisan

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    Abstract

    A thermally decoupled hidden sector of particles, with a mass gap, generically enters a phase of cannibalism in the early Universe. The Standard Model sector becomes exponentially colder than the hidden sector. We propose the cannibal dark matter framework, where dark matter resides in a cannibalizing sector with a relic density set by 2-to-2 annihilations. Observable signals of cannibal dark matter include a boosted rate for indirect detection, new relativistic degrees of freedom, and warm dark matter.

    Original languageEnglish (US)
    Article number035005
    JournalPhysical Review D
    Volume94
    Issue number3
    DOIs
    StatePublished - Aug 5 2016

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    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Pappadopulo, D., Ruderman, J. T., & Trevisan, G. (2016). Dark matter freeze-out in a nonrelativistic sector. Physical Review D, 94(3), [035005]. https://doi.org/10.1103/PhysRevD.94.035005