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A Solution to the Coincidence Puzzle of \Omega_{B} and \Omega_{DM}

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arxiv hep-ph/0206066 v1 pith:KZUKVZX5 submitted 2002-06-06 hep-ph

Masaaki Fujii , T. Yanagida This is my paper · ORCID
classification hep-ph
keywords omegadarkdensitymassmatterparametersscenarioaffleck--dine
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We show that a class of Affleck--Dine baryogenesis directly relates the observed mass density of baryons, \Omega_{B}, to that of dark matter, \Omega_{DM}. In this scenario, the ratio of baryon to dark matter mass density is solely determined by the low energy parameters, except for an O(0.1) effective CP-violating phase. We find that \Omega_{B}/\Omega_{DM}=O(0.1) with reasonable parameters, which lies surprisingly just in the range of observation. This scenario is totally free from the cosmological gravitino problem, and independent of the detailed history of the Universe as long as it satisfies quite weak constraints.

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Cited by 2 Pith papers

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    hep-ph 2026-02 conditional novelty 5.0 of 10

    Cosmological and direct-detection data already exclude most sub-GeV dark-matter parameter space for dark-photon magnetic dipole interactions, with semiconductor detectors needed to probe the remaining electric-dipole ...

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