Leptogenesis from supersymmetry breaking

Leptogenesis from supersymmetry breaking

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 scena...

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Veröffentlicht in:Physical review letters 2003-12, Vol.91 (25), p.251801-251801, Article 251801
Hauptverfasser: Grossman, Yuval, Kashti, Tamar, Nir, Yosef, Roulet, Esteban
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container_title Physical review letters
container_volume 91
creator Grossman, Yuval
Kashti, Tamar
Nir, Yosef
Roulet, Esteban
description 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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title Leptogenesis from supersymmetry breaking
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