On baryogenesis from dark matter annihilation

We study in detail the conditions to generate the bar yon asymmetry of the universe from the annihilation of dark matter. This scenario requires a low energy mechanism for thermal baryogenesis, hence we first discuss some of these mechanisms together with the specific constraints due to the connecti...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2013-10, Vol.2013 (10), p.I-29
Main Authors: Bernal, Nicolas, Colucci, Stefano, Josse-Michaux, Francois-Xavier, Racker, J, Ubaldi, Lorenzo
Format: Article
Language:English
Subjects:
ANNIHILATION
Astronomical models
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
ASYMMETRY
BARYONS
Conservation
Cosmology
Dark matter
LIMITING VALUES
Low energy
NEUTRINOS
NONLUMINOUS MATTER
REST MASS
UNIVERSE
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Summary:We study in detail the conditions to generate the bar yon asymmetry of the universe from the annihilation of dark matter. This scenario requires a low energy mechanism for thermal baryogenesis, hence we first discuss some of these mechanisms together with the specific constraints due to the connection with the dark matter sector. Then we show that, contrary to what stated in previous studies, it is possible to generate the cosmological asymmetry without adding a light sterile dark sector, both in models with violation and with conservation of B - L. In addition, one of the models we propose yields some connection to neutrino masses.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2013/10/035