Sneutrino NLSP in the {nu}CMSSM
- Michigan Center for Theoretical Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)
- William I. Fine Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455 (United States)
- The Abdus Salam International Center for Theoretical Physics, 34014 Trieste (Italy)
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.
- OSTI ID:
- 21260112
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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