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Asymmetric Dark Matter via Spontaneous Co-Genesis

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.
Publication status:
Published

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Journal:
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume:
2012
Issue:
3
Pages:
019-019
Publication date:
2011-06-21
DOI:
EISSN:
1475-7516
ISSN:
1475-7516
URN:
uuid:f9b98cc4-b487-4769-ac42-af1a66928a73
Source identifiers:
159419
Local pid:
pubs:159419
Language:
English
Keywords:

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