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B-ball Baryogenesis and the Baryon to Dark Matter Ratio
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B-ball Baryogenesis and the Baryon to Dark Matter Ratio
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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.
Forward citations
Cited by 2 Pith papers
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Fermion Condensate Inflation, Dynamical Waterfall Mechanism and Primordial Black Holes
Torsion-induced fermion condensate produces hybrid inflation with axial-chemical-potential waterfall, Q-ball PBH seeds, and parity-violating signatures in Chern-Simons gravity.
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Superheavy Q-Balls and Cosmology
Model for cosmological formation of superheavy Q-balls from a broken scale invariance potential that may explain dark matter or early structure formation.
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