Neutrino masses, leptogenesis and dark matter in hybrid seesaw

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dc.creatorGu, Pei-Hong
dc.creatorHirsch, M.
dc.creatorSarkar, Utpal
dc.creatorValle, J. W. F.
dc.date2008-11-06
dc.date.accessioned2026-07-07T13:09:13Z
dc.date.available2026-07-07T13:09:13Z
dc.descriptionWe suggest a hybrid seesaw model where relatively ``light''right-handed neutrinos give no contribution to the neutrino mass matrix due to a special symmetry. This allows their Yukawa couplings to the standard model particles to be relatively strong, so that the standard model Higgs boson can decay dominantly to a left and a right-handed neutrino, leaving another stable right-handed neutrino as cold dark matter. In our model neutrino masses arise via the type-II seesaw mechanism, the Higgs triplet scalars being also responsible for the generation of the matter-antimatter asymmetry via the leptogenesis mechanism.
dc.description4 pages
dc.identifierhttps://arxiv.org/abs/0811.0953
dc.identifierhttp://arxiv.org/abs/0811.0953
dc.identifierPhys.Rev.D79:033010,2009
dc.identifierdoi:10.1103/PhysRevD.79.033010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/228663
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNeutrino masses, leptogenesis and dark matter in hybrid seesaw
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