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Leptogenesis from Supersymmetry Breaking

Yuval Grossman·Tamar Kashti·Yosef Nir·Esteban Roulet
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Abstract

We show that soft supersymmetry breaking terms involving the heavy sneutrinos can lead to sneutrino-antisneutrino mixing and to new sources of CP violation, which are present even if a single generation is considered. These terms are naturally present in supersymmetric versions of leptogenesis scenarios, and they induce indirect CP violation in the decays of the heavy sneutrinos, eventually generating a baryon asymmetry. This new contribution can be comparable to or even dominate over the asymmetry produced in traditional leptogenesis scenarios.

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Yuval Grossman, Tamar Kashti, Yosef Nir, Esteban Roulet. 2003-08-17. Leptogenesis from Supersymmetry Breaking. https://doi.org/10.1103/physrevlett.91.251801

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