Sneutrino NLSP Scenarios in the NUHM with Gravitino Dark Matter

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dc.creatorEllis, John
dc.creatorOlive, Keith A.
dc.creatorSantoso, Yudi
dc.date2008-07-23
dc.date.accessioned2026-07-07T12:24:20Z
dc.date.available2026-07-07T12:24:20Z
dc.descriptionWe analyze scenarios in which some flavour of sneutrino is the next-to-lightest supersymmetric particle (NLSP), assuming that the gravitino is the lightest supersymmetric particle (LSP) and provides the cold dark matter. Such scenarios do not arise in the constrained supersymmetric extension of the Standard Model (CMSSM) with universal gaugino and scalar masses input at the GUT scale. However, models with non-universal Higgs masses (NUHM) do allow scenarios with a sneutrino NLSP, which are quite generic. We illustrate how such scenarios may arise, analyze the possible metastable sneutrino lifetime, and explore the theoretical, phenomenological, experimental and cosmological constraints on such scenarios. We also discuss the collider signatures of such scenarios, how they may be distinguished from neutralino LSP scenarios, and how different flavours of sneutrino NLSP may be distinguished.
dc.description29 pages, 13 eps figures
dc.identifierhttps://arxiv.org/abs/0807.3736
dc.identifierhttp://arxiv.org/abs/0807.3736
dc.identifierJHEP 0810:005,2008
dc.identifierdoi:10.1088/1126-6708/2008/10/005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214291
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Experiment
dc.titleSneutrino NLSP Scenarios in the NUHM with Gravitino Dark Matter
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