Dark Matter candidates in a baryogenesis inspired scenario

Details Dark Matter candidates in a baryogenesis inspired scenario Dark Matter candidates in a baryogenesis inspired scenario

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jphcs..39..173p&link_type=abstract

Journal of Physics: Conference Series, Volume 39, Issue 1, pp. 173-175 (2006).

Physics

1

Scientific paper

It has recently been shown that the electroweak baryogenesis mechanism is feasible in Standard Model extensions containing extra fermions with large Yukawa couplings. We show that the lightest of these fermionic fields can naturally be a good candidate for cold dark matter. We find regions in the parameter space where the thermal relic abundance of this particle is compatible with the dark matter density of the Universe as determined by the WMAP experiment. We study direct and indirect dark matter detection for this model and compare with current experimental limits and prospects for upcoming experiments. We find, contrary to the standard lore, that indirect detection searches are more promising than direct ones, and they already exclude part of the parameter space.

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