Perspectives of direct Detection of supersymmetric Dark Matter in the NMSSM

Abstract

In the Next-to-Minimal-Supersymmetric-Standard-Model (NMSSM) the lightest supersymmetric particle (LSP) is a candidate for the dark matter (DM) in the universe. It is a mixture from the various gauginos and Higgsinos and can be bino-, Higgsino- or singlino-dominated. Singlino-dominated LSPs can have very low cross sections below the neutrino background from coherent neutrino scattering which is limiting the sensitivity of future direct DM search experiments. However, previous studies suggested that the combination of both, the spin-dependent (SD) and spin-independent (SI) searches are sensitive in complementary regions of parameter space, so considering both searches will allow to explore practically the whole parameter space of the NMSSM. In this letter, the different scenarios are investigated with a new scanning technique, which reveals that significant regions of the NMSSM parameter space cannot be explored, even if one considers both, SI and SD, searches.

22 pages, 3 figures, this version is accepted by PLB after minor modifications

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• Spin-dependent constraints on blind spots for thermal singlino-higgsino dark matter with(out) light singlets
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• An effective scanning method of the NMSSM parameter space
• Dark matter constraints and the neutralino sector of the scNMSSM
• Status of ${\mathbb{Z}}_3$-NMSSM featuring a light bino-dominated LSP and a light singlet-like scalar under the LZ Experiment
• Genuine NMSSM deviations in the 125 GeV Higgs boson decays