Status of the singlino-dominated dark matter in general Next-to-Minimal Supersymmetric Standard Model

TL;DR

This paper explores the viability of singlino-dominated dark matter within the general NMSSM, highlighting its advantages over bino-dominated models and its compatibility with current experimental constraints.

Contribution

It provides a detailed analysis of how singlino-dominated dark matter in the general NMSSM aligns with experimental data and addresses issues present in the Z3-symmetric NMSSM.

Findings

Compatible with LHC SUSY searches

Consistent with LZ dark matter detection results

Can explain muon g-2 anomaly broadly

Abstract

With the rapid progress of dark matter direct detection experiments, the attractiveness of the popular bino-dominated dark matter in economical supersymmetric theories is fading. As an alternative, the singlino-dominated dark matter in general Next-to-Minimal Supersymmetric Standard Model (NMSSM) is paying due attention. This scenario has the following distinct characteristics: free from the tadpole problem and the domain-wall problem of the NMSSM with a $Z_3$-symmetry, predicting more stable vacuum states than the $Z_3$-NMSSM, capable of forming an economical secluded dark matter sector to yield the dark matter experimental results naturally, and readily weaken the restrictions from the LHC search for SUSY. Consequently, it can explain the muon g-2 anomaly in broad parameter space that agrees with various experimental results while simultaneously breaking the electroweak symmetry naturally. In this study, we show in detail how the scenario coincides with the experiments, such as the SUSY search at the LHC, the dark matter search by the LZ experiment, and the improved measurement of the muon g-2. We provide a simple and clear picture of the physics inherent in the general NMSSM.