Baryon Asymmetry in a Heavy Moduli Scenario - High Energy Physics - PhenomenologyReport as inadecuate




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Abstract: In some models of supersymmetry breaking, modulus fields are heavy enough todecay before BBN. But the large entropy produced via moduli decay significantlydilutes the preexisting baryon asymmetry of the universe. We study whetherAffleck-Dine mechanism can provide enough baryon asymmetry which survives thedilution, and find several situations in which desirable amount of baryonnumber remains after the dilution. The possibility of non-thermal dark matteris also discussed. This provides the realistic cosmological scenario with heavymoduli.



Author: Masahiro Kawasaki, Kazunori Nakayama

Source: https://arxiv.org/



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