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arXiv · hep-ph/9803380

B-ball Baryogenesis and the Baryon to Dark Matter Ratio

Kari Enqvist·John McDonald
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Abstract

We demonstrate that B-ball decay in the MSSM can naturally solve the puzzle of why the densities of baryons and dark matter in the Universe are similar. This requires that the B-balls survive thermalization and decay below the freeze-out temperature of the neutralino LSP, typically 1-10GeV. It is shown that this can happen if the baryon asymmetry originates from a squark condensate along the d=6 u^{c}d^{c}d^{c} D-flat direction of the MSSM scalar potential. For this to work the reheating temperature after inflation must be no greater than 10^3-10^5 GeV.

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Kari Enqvist, John McDonald. 1998-10-19. B-ball Baryogenesis and the Baryon to Dark Matter Ratio. https://doi.org/10.1016/s0550-3213(98)00695-6

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