Leptogenesis in Supersymmetric Standard Model with Right-handed Neutrino

Details Leptogenesis in Supersymmetric Standard Model with Right-handed Neutrino Leptogenesis in Supersymmetric Standard Model with Right-handed Neutrino

1993-10-17

arxiv.org/abs/hep-ph/9310297v1

Phys.Lett.B322:349-354,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, LaTeX file, LBL-34744

Scientific paper

10.1016/0370-2693(94)91164-9

We show that the leptogenesis is automatic within the supersymmetric standard model if there exist right-handed neutrinos with mass less than $H_{\it inf}$, the expansion rate during the inflation. Its scalar component grows during the inflation due to the quantum fluctuation, oscillates coherently after the inflation, and its decay generates lepton asymmetry. The scenario is naturally embedded into $SO(10)$ GUT without any modifications. We also discuss the case with heavier right-handed neutrino.

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