有利于新领域的受约束的MSSM：新的LHC限制和125 GeV希格斯玻色子玻色子的影响
Constrained MSSM favoring new territories: The impact of new LHC limits and a 125 GeV Higgs boson
摘要：
我们提出了一个更新和扩展的全球分析的约束MSSM（CMSSM）考虑到新的限制超对称性从5/FB数据集在大型强子对撞机。特别是，在由CMS协作获得的剃刀限制的情况下，我们模拟检测器效率的实验分析，并推导出近似但准确的似然函数。我们讨论了最近的数据所暗示的一个可能的质量接近125 GeV的希格斯玻色子对全局拟合的影响，以及对BR（B_s->μμ）的一个新的改进的限制。我们确定了高后验概率区域的CMSSM参数的stau-coannihilation和A-漏斗区域，后者的重要性现在是更大的，由于上述三个LHC结果和暗物质遗迹密度的综合影响。我们还发现焦点区域现在不受欢迎。随后对超伴体质量的影响倾向于比以前更大的值，甚至更低的暗物质自旋无关截面范围，σ^{SI}_p<10^{-9} pb。我们还发现，相对较小的变化，在应用实验的限制，可以引起一个大的转变，在最佳拟合点的位置。这就对将通常的卡方方法应用于CMSSM的鲁棒性提出了质疑。我们讨论了拟合优度，发现虽然很难计算p值，但g-2约束使得CMSSM的整体拟合较差。我们考虑没有这个约束的扫描，我们允许μ为正或负。我们发现，对于μ的两个符号，全局拟合都有了很大的改善，由于BR（b->sγ）和BR（B_s->μμ）的拟合更好，所以对μ<0略有偏好。
英文摘要：
We present an updated and extended global analysis of the Constrained MSSM (CMSSM) taking into account new limits on supersymmetry from ~5/fb data sets at the LHC. In particular, in the case of the razor limit obtained by the CMS Collaboration we simulate detector efficiency for the experimental analysis and derive an approximate but accurate likelihood function. We discuss the impact on the global fit of a possible Higgs boson with mass near 125 GeV, as implied by recent data, and of a new improved limit on BR(B_s->μμ). We identify high posterior probability regions of the CMSSM parameters as the stau-coannihilation and the A-funnel region, with the importance of the latter now being much larger due to the combined effect of the above three LHC results and of dark matter relic density. We also find that the focus point region is now disfavored. Ensuing implications for superpartner masses favor even larger values than before, and even lower ranges for dark matter spin-independent cross section, σ^{SI}_p<10^{-9} pb. We also find that relatively minor variations in applying experimental constraints can induce a large shift in the location of the best-fit point. This puts into question the robustness of applying the usual chisquare approach to the CMSSM. We discuss the goodness-of-fit and find that, while it is difficult to calculate a p-value, the g-2 constraint makes, nevertheless, the overall fit of the CMSSM poor. We consider a scan without this constraint, and we allow μ to be either positive or negative. We find that the global fit improves enormously for both signs of μ, with a slight preference for μ<0 caused by a better fit to BR(b->sγ) and BR(B_s->μμ).
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