15维MSSM的剖面似然图
Profile likelihood maps of a 15-dimensional MSSM
摘要：
我们提出了统计收敛的配置文件的似然映射通过全球拟合的现象学最小超对称标准模型与15个自由参数（MSSM-15），超过250 M点的基础上。我们从暗物质的直接探测极限、普朗克遗迹密度测量和加速器搜索数据中推导出模型参数的约束条件。我们提供了一个详细的分析，这个模型的丰富的现象，并确定超对称质谱和暗物质的属性，目前的实验约束的首选。我们评估的μ子（$g-2$）的异常磁矩的测量对我们的结果的影响，并提供了一个分析的情况下，最轻的中性伴子是暗物质的次优势成分。MSSM-15的参数是相对较弱的约束，目前的数据集，与暗物质现象学（$M_1$，$M_2$，$μ$），这是受限制的亚TeV制度，主要是由于遗物密度约束的参数除外。最轻的中性伴子的质量在99% C. L.时小于1.5 TeV，但是当从分析中排除$g - 2$约束时，可以扩展到3 TeV。低质量的类双星中性伴子是非常有利的，与自旋无关的散射截面延伸到非常小的值，$\sim 10^{-20}$ pb。ATLAS SUSY空搜索强烈影响这个质量范围，从而排除了任何当前或未来直接检测实验所无法达到的参数空间区域。包含所有数据后获得的最佳拟合点对应于2.3 TeV的夸克质量，2.1 TeV的胶子质量和130 GeV的中性伴子，其自旋独立截面为$2.4 \times 10^{-10}$ Pb，这是在未来的多吨级直接探测实验和即将到来的大型强子对撞机运行在增加的质心能量范围内。
英文摘要：
We present statistically convergent profile likelihood maps obtained via global fits of a phenomenological Minimal Supersymmetric Standard Model with 15 free parameters (the MSSM-15), based on over 250M points. We derive constraints on the model parameters from direct detection limits on dark matter, the Planck relic density measurement and data from accelerator searches. We provide a detailed analysis of the rich phenomenology of this model, and determine the SUSY mass spectrum and dark matter properties that are preferred by current experimental constraints. We evaluate the impact of the measurement of the anomalous magnetic moment of the muon ($g-2$) on our results, and provide an analysis of scenarios in which the lightest neutralino is a subdominant component of the dark matter. The MSSM-15 parameters are relatively weakly constrained by current data sets, with the exception of the parameters related to dark matter phenomenology ($M_1$, $M_2$, $μ$), which are restricted to the sub-TeV regime, mainly due to the relic density constraint. The mass of the lightest neutralino is found to be < 1.5 TeV at 99% C.L., but can extend up to 3 TeV when excluding the $g - 2$ constraint from the analysis. Low-mass bino-like neutralinos are strongly favoured, with spin-independent scattering cross-sections extending to very small values, $\sim 10^{-20}$ pb. ATLAS SUSY null searches strongly impact on this mass range, and thus rule out a region of parameter space that is outside the reach of any current or future direct detection experiment. The best-fit point obtained after inclusion of all data corresponds to a squark mass of 2.3 TeV, a gluino mass of 2.1 TeV and a 130 GeV neutralino with a spin-independent cross-section of $2.4 \times 10^{-10}$ pb, which is within the reach of future multi-ton scale direct detection experiments and of the upcoming LHC run at increased centre-of-mass energy.
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