A Sneutrino NLSP in the $\nu$CMSSM

Abstract

We extend the constrained minimal supersymmetric model (CMSSM) by adding a right-handed neutrino superfield ($\nu$CMSSM) which decouples close to the GUT scale. We study the effects of a right-handed neutrino on the low energy spectrum and focus on the predictions for dark matter properties. We pay particular attention to the realization of the light (left-handed) sneutrino which can be the next-to-lightest supersymmetric particle (NLSP) with either the neutralino or gravitino as the lightest supersymmetric particle (LSP). Notably, for the case of a neutralino LSP with a sneutrino NLSP, there are new `sneutrino coannihilation regions' which yield the desired thermal neutralino relic density determined by WMAP.

16 pages, 5 figures

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Cited by in corpus (11)

• What if Supersymmetry Breaking Unifies beyond the GUT Scale?
• Constrained Supersymmetric Flipped SU(5) GUT Phenomenology
• Dark matter in minimal supergravity with type-II seesaw
• A Heavy Higgs and a Light Sneutrino NLSP in the MSSM with Enhanced SU(2) D-terms
• Heavy Right-Handed Neutrinos and Dark Matter in the $\nu$CMSSM
• Leptophilic Signals of a Sneutrino (N)LSP and Flavor Biases from Flavor-Blind SUSY
• Supersymmetric mass spectra and the seesaw scale
• Revisiting Flavor and CP Violation in Supersymmetric SU(5) with Right-Handed Neutrinos
• Enhanced Tau Lepton Signatures at LHC in Constrained Supersymmetric Seesaw
• Threshold corrections to the radiative breaking of electroweak symmetry and neutralino dark matter in supersymmetric seesaw model
• Stop Decay with LSP Gravitino in the final state: ${\tilde{t}}_1\to \tilde{G}Wb$