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arXiv · hep-ph/9310268

Cosmological Baryon Asymmetry in Supersymmetric Standard Models and Heavy Particle Effects

T. Inui·T. Ichihara·Y. Mimura·N. Sakai
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Abstract

Cosmological baryon asymmetry B is studied in supersymmetric standard models, assuming the electroweak reprocessing of B and L. Only when the soft supersymmetry breaking is taken into account, B is proportional to the primordial B-L in the supersymmetric standard models. The ratio $B/(B-L)$ is found to be about one percent less than the nonsupersymmetric case. Even if the primordial B-L vanishes, scalar-leptons can be more efficient than leptons to generate B provided that mixing angles $þ$ among scalar leptons satisfy $|þ| < 10^{-8} (T/{GeV})^{1/2}$.

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T. Inui, T. Ichihara, Y. Mimura, N. Sakai. 1994-01-24. Cosmological Baryon Asymmetry in Supersymmetric Standard Models and Heavy Particle Effects. https://doi.org/10.1016/0370-2693(94)90031-0

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