On baryogenesis from dark matter annihilation

Journal Article · Tue Oct 01 00:00:00 EDT 2013 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2013/10/035· OSTI ID:22282616

Bernal, Nicolás ^[1]; Colucci, Stefano; Ubaldi, Lorenzo ^[2]; Josse-Michaux, François-Xavier ^[3]

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1. ICTP South American Institute for Fundamental Research and Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, SP 01140-070 (Brazil)
2. Bethe Center for Theoretical Physics and Physikalisches Institut, Universität Bonn, Nußallee 12, D-53115 Bonn (Germany)
3. Centro de Física Teórica de Partículas CFTP, Instituto Superior Técnico, Technical University of Lisbon, 1049-001 Lisbon (Portugal)

We study in detail the conditions to generate the baryon 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.

• OSTI ID: 22282616
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2013, Issue 10; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ANNIHILATION
ASYMMETRY
BARYONS
LIMITING VALUES
NEUTRINOS
NONLUMINOUS MATTER
REST MASS
UNIVERSE