Sneutrino dark matter in low-scale seesaw scenarios
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Sneutrino dark matter in low-scale seesaw scenarios

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Sneutrino dark matter in low-scale seesaw scenarios

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dc.contributor.author De Romeri, Valentina
dc.contributor.author Hirsch, Martin
dc.date.accessioned 2014-08-26T08:51:32Z
dc.date.available 2014-08-26T08:51:32Z
dc.date.issued 2012
dc.identifier.uri http://hdl.handle.net/10550/37400
dc.description.abstract We consider supersymmetric models in which sneutrinos are viable dark matter candidates. These are either simple extensions of the Minimal Supersymmetric Standard Model with additional singlet superfields, such as the inverse or linear seesaw, or a model with an additional U(1) group. All of these models can accomodate the observed small neutrino masses and large mixings. We investigate the properties of sneutrinos as dark matter candidates in these scenarios. We check for phenomenological bounds, such as correct relic abundance, consistency with direct detection cross section limits and laboratory constraints, among others lepton flavour violating (LFV) charged lepton decays. While inverse and linear seesaw lead to different results for LFV, both models have very similar dark matter phenomenology, consistent with all experimental bounds. The extended gauge model shows some additional and peculiar features due to the presence of an extra gauge boson Z' and an additional light Higgs. Specifically, we point out that for sneutrino LSPs there is a strong constraint on the mass of the Z' due to the experimental bounds on the direct detection scattering cross section.
dc.language.iso eng
dc.relation.ispartof Journal of High Energy Physics, 2012, vol. 2012, num. 12, p. 106
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source De Romeri, Valentina Hirsch, Martin 2012 Sneutrino dark matter in low-scale seesaw scenarios Journal of High Energy Physics 2012 12 106
dc.subject Física
dc.title Sneutrino dark matter in low-scale seesaw scenarios
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-08-26T08:51:32Z
dc.identifier.doi http://dx.doi.org/10.1007/JHEP12(2012)106
dc.identifier.idgrec 084416

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