New Ways to Soft Leptogenesis

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dc.creatorGrossman, Yuval
dc.creatorKashti, Tamar
dc.creatorNir, Yosef
dc.creatorRoulet, Esteban
dc.date2004-07-06
dc.date.accessioned2026-07-07T10:49:09Z
dc.date.available2026-07-07T10:49:09Z
dc.descriptionSoft supersymmetry breaking terms involving heavy singlet sneutrinos provide new sources of lepton number violation and of CP violation. In addition to the CP violation in mixing, investigated previously, we find that `soft leptogenesis' can be generated by CP violation in decay and in the interference of mixing and decay. These additional ways to leptogenesis can be significant for a singlet neutrino Majorana mass that is not much larger than the supersymmetry breaking scale, $M < 100 m_{SUSY}$. In contrast to CP violation in mixing, for some of these new contributions the sneutrino oscillation rate can be much faster than the decay rate, so that the bilinear scalar term need not be smaller than its natural scale.
dc.description18 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0407063
dc.identifierhttp://arxiv.org/abs/hep-ph/0407063
dc.identifierJHEP0411:080,2004
dc.identifierdoi:10.1088/1126-6708/2004/11/080
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184125
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNew Ways to Soft Leptogenesis
dc.typetext

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