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arXiv · 1008.2399

Hylogenesis: A Unified Origin for Baryonic Visible Matter and Antibaryonic Dark Matter

Hooman Davoudiasl·David E. Morrissey·Kris Sigurdson·Sean Tulin
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Abstract

We present a novel mechanism for generating both the baryon and dark matter densities of the Universe. A new Dirac fermion X carrying a conserved baryon number charge couples to the Standard Model quarks as well as a GeV-scale hidden sector. CP-violating decays of X, produced non-thermally in low-temperature reheating, sequester antibaryon number in the hidden sector, thereby leaving a baryon excess in the visible sector. The antibaryonic hidden states are stable dark matter. A spectacular signature of this mechanism is the baryon-destroying inelastic scattering of dark matter that can annihilate baryons at appreciable rates relevant for nucleon decay searches.

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Hooman Davoudiasl, David E. Morrissey, Kris Sigurdson, Sean Tulin. 2010-08-30. Hylogenesis: A Unified Origin for Baryonic Visible Matter and Antibaryonic Dark Matter. https://doi.org/10.1103/physrevlett.105.211304

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