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arXiv · 1102.0189

Direct neutralino searches in the NMSSM with gravitino LSP in the degenerate scenario

Gabriela Barenboim·Grigoris Panotopoulos
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Abstract

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.

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Gabriela Barenboim, Grigoris Panotopoulos. 2011-02-01. Direct neutralino searches in the NMSSM with gravitino LSP in the degenerate scenario. https://doi.org/10.1007/jhep08(2011)027

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