Phenomenology of WIMPy baryogenesis models

A possible connection between the abundances of baryonic and dark matter (DM) has been explored so far mostly in the context of the so-called asymmetric DM. Recently, a very different mechanism, dubbed "WIMPy baryogenesis", has been proposed to relate the baryon asymmetry to DM annihilatio...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2013-01, Vol.2013 (1), p.i-27
Main Authors: Bernal, Nicolas, Josse-Michaux, Francois-Xavier, Ubaldi, Lorenzo
Format: Article
Language:English
Subjects:
ANNIHILATION
ASTROPHYSICS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
ASYMMETRY
BARYONS
CERN LHC
COSMOLOGY
Dark matter
FIELD THEORIES
Field theory
GEV RANGE
Joints
Mathematical models
NONLUMINOUS MATTER
PARTICLE PRODUCTION
Phenomenology
SPACE
Weakly interacting massive particles
WIMPS
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Summary:A possible connection between the abundances of baryonic and dark matter (DM) has been explored so far mostly in the context of the so-called asymmetric DM. Recently, a very different mechanism, dubbed "WIMPy baryogenesis", has been proposed to relate the baryon asymmetry to DM annihilation. The DM candidate is a weakly interacting massive particle (WIMP), and the usual WIMP scenario is slightly extended to accommodate baryogenesis, which is accomplished around the time of DM freeze-out. We construct an effective field theory that encompasses a quite general class of models which implement the WIMPy baryogenesis. Under some reasonable, simplifying assumptions, we show that a good portion of the parameter space is allowed for these models, after experimental constraints are taken into account. Bounds from the LHC require that the WIMP be heavier than 400 GeV.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2013/01/034