Killing the cMSSM softly
Killing the cMSSM softly
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DOI：
10.1140/epjc/s10052-015-3864-0
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发表时间：
2015-08
期刊：
影响因子：
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通讯作者：
P. Bechtle;J. E. Camargo-Molina;K. Desch;H. Dreiner;M. Hamer;M. Krämer;B. O'Leary;W. Porod
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文献类型：
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作者：
P. Bechtle;J. E. Camargo-Molina;K. Desch;H. Dreiner;M. Hamer;M. Krämer;B. O'Leary;W. Porod
我们调查的约束最小超对称标准模型（cMSSM）的约束实验和观测数据的精密测量，天体物理学，直接超对称搜索在大型强子对撞机和希格斯玻色子的性质的测量，通过一个全球性的拟合使用程序Fittino。与以往的研究一样，我们发现最佳拟合点与全球数据的一致性较差。我们还研究了电弱真空在最佳拟合点附近的参数空间优选区域的稳定性。我们发现真空是亚稳态的，其寿命比宇宙的年龄长得多。对于第一次在全球配合的超对称性，我们采用了一致的方法来评估的cMSSM的拟合优度在频率论的方法derivingpvalues从大型玩具实验。我们分析和定量的影响，可观察集的选择上thepvalue，特别是它的稀释时，面对大量的几乎没有约束的测量模型。最后，对于优选的观测值集，我们获得cMSSM的p值低于10%，即我们在90%置信水平下排除cMSSM作为模型。
We investigate the constrained Minimal Supersymmetric Standard Model (cMSSM) in the light of constraining experimental and observational data from precision measurements, astrophysics, direct supersymmetry searches at the LHC and measurements of the properties of the Higgs boson, by means of a global fit using the programFittino. As in previous studies, we find rather poor agreement of the best fit point with the global data. We also investigate the stability of the electro-weak vacuum in the preferred region of parameter space around the best fit point. We find that the vacuum is metastable, with a lifetime significantly longer than the age of the Universe. For the first time in a global fit of supersymmetry, we employ a consistent methodology to evaluate the goodness-of-fit of the cMSSM in a frequentist approach by derivingpvalues from large sets of toy experiments. We analyse analytically and quantitatively the impact of the choice of the observable set on thepvalue, and in particular its dilution when confronting the model with a large number of barely constraining measurements. Finally, for the preferred sets of observables, we obtainpvalues for the cMSSM below 10 %, i.e. we exclude the cMSSM as a model at the 90 % confidence level.