论文标题
SCNMSSM的暗物质约束和中性群领域
Dark matter constraints and the neutralino sector of the scNMSSM
论文作者
论文摘要
在最近的实验限制下，探索了半约束超对称标准模型的中inino部门，并特别注意暗物质（DM）极限。深度分析了暗物质遗物密度的上和下限的影响，以及最近的直接检测约束对自旋非依赖性和依赖性横截面的影响。特别是，由于不同的暗物质约束和相应的模型特定参数，我们表明了哪些参数空间的区域被排除在外：$λ，κ，a_λ$和$a_κ$。我们分析了有助于暗物质遗物密度的所有an灭和共灭液过程（具有较重的中性和charginos）。研究了暗物质候选者的质量成分，最轻的中性诺里诺$ \tildeχ_1^0 $，并且检查了最轻质的中性中性的中产值$ \tildeχ_2^0 $和$ \tildeχ_2^0 $和$ \tildeχ_2^+$的衰减。我们在大统一理论量表上施加了半通的边界条件，需要$ \tanβ\ lyssim 10 $。我们发现，允许的参数空间通常与较重的质谱相关，最轻的中性诺主要是希格西诺，其质量范围大部分位于1000至1500 GEV之间。但是，如果DM候选者类似Bino或单利诺，则可以实现较小的质量值。
The neutralino sector of the semi-constrained next-to-minimal supersymmetric standard model is explored under recent experimental constraints, with special attention to dark matter (DM) limits. The effects of the upper and lower bounds of dark matter relic density and recent direct detection constraints on spin-independent and -dependent cross-sections are thoroughly analyzed. Particularly, we show which regions of the parameter space are ruled out due to the different dark matter constraints and the corresponding model-specific parameters: $λ, κ, A_λ$, and $A_κ$. We analyze all annihilation and co-annihilation processes (with heavier neutralinos and charginos) that contribute to the dark matter relic density. The mass components of the dark matter candidate, the lightest neutralino $\tildeχ_1^0$, are studied, and the decays of heavy neutralinos and charginos, especially $\tildeχ_2^0$ and $\tildeχ_1^+$, into the lightest neutralino are examined. We impose semi-universal boundary conditions at the Grand Unified Theory scale and require a moderate range of $\tanβ \lesssim 10$. We find that the allowed parameter space is associated with a heavy mass spectrum in general and that the lightest neutralino is mostly Higgsino with a mass range that resides mostly between 1000 and 1500 GeV. However, smaller mass values can be achieved if the DM candidate is bino-like or singlino-like.
