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arXiv · 1106.4319

Asymmetric Dark Matter via Spontaneous Co-Genesis

John March-Russell·Matthew McCullough
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Abstract

We investigate, in the context of asymmetric dark matter (DM), a new mechanism of spontaneous co-genesis of linked DM and baryon asymmetries, explaining the observed relation between the baryon and DM densities, Omega_DM/Omega_B ~ 5. The co-genesis mechanism requires a light scalar field, phi, with mass below 5 eV which couples derivatively to DM, much like a `dark axion'. The field phi can itself provide a final state into which the residual symmetric DM component can annihilate away.

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John March-Russell, Matthew McCullough. 2011-09-07. Asymmetric Dark Matter via Spontaneous Co-Genesis. https://doi.org/10.1088/1475-7516%2F2012%2F03%2F019

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