Cosmology of Gravitino LSP Scenario with Right-Handed Sneutrino NLSP

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dc.creatorIshiwata, Koji
dc.creatorMatsumoto, Shigeki
dc.creatorMoroi, Takeo
dc.date2007-10-19
dc.date.accessioned2026-07-07T08:37:17Z
dc.date.available2026-07-07T08:37:17Z
dc.descriptionWe consider supersymmetric model with right-handed (s)neutrinos where the neutrino masses are purely Dirac-type. We discuss cosmology based on such a scenario, paying particular attention to the case that the gravitino is the lightest superparticles (LSP) while the right-handed sneutrino is the next-LSP. It will be shown that the cosmological constraints on the gravitino-LSP scenario (in particular, those from the big-bang nucleosynthesis) are drastically relaxed in such a case. We will also consider the implication of such scenario to the structure formation.
dc.descriptionSubmitted for the SUSY07 proceedings, 4 pages, LaTeX, 1 eps figure
dc.identifierhttps://arxiv.org/abs/0710.3624
dc.identifierhttp://arxiv.org/abs/0710.3624
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/140353
dc.subjectHigh Energy Physics - Phenomenology
dc.titleCosmology of Gravitino LSP Scenario with Right-Handed Sneutrino NLSP
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