Leptogenesis with supersymmetric Higgs triplets in TeV region
Masato Senami, Katsuji Yamamoto
Abstract
The leptogenesis with supersymmetric Higgs triplets is studied in the light of experimental verification in the TeV region. The lepton number asymmetry appears just after the inflation via multiscalar coherent evolution of Higgs triplets and antislepton on a flat manifold. If the Higgs triplet mass terms dominate over the negative thermal-log term for the Hubble parameter H comparable to the Higgs triplet mass MΔ, the asymmetry is fixed readily to some significant value by the redshift and rotation of these scalar fields, providing the sufficient lepton-to-entropy ratio nL / s 10-10. This can be the case even with MΔ 1 TeV for the reheating temperature TR 106 GeV and the mass parameter M / λ 1022 GeV of the nonrenormalizable superpotential terms relevant for leptogenesis.
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