6533b7dcfe1ef96bd1272c31
RESEARCH PRODUCT
Direct neutralino searches in the NMSSM with gravitino LSP in the degenerate scenario
Gabriela BarenboimGrigoris Panotopoulossubject
PhysicsNuclear and High Energy PhysicsParticle physicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Degenerate energy levelsDark matterFísicaFOS: Physical sciencesHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)LeptogenesisNeutralinoGravitinoAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
In the present work a two-component dark matter model is studied adopting the degenerate scenario in the R-parity conserving NMSSM. The gravitino LSP and the neutralino NLSP are extremely degenerate in mass, avoiding the BBN bounds and obtaining a high reheating temperature for thermal leptogenesis. In this model both gravitino (absolutely stable) and neutralino (quasi-stable) contribute to dark matter, and direct detection searches for neutralino are discussed. Points that survive all the constraints correspond to a singlino-like neutralino.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-01-01 | Journal of High Energy Physics |