Naturalness and GUT Scale Yukawa Coupling Ratios in the CMSSM
Naturalness and GUT Scale Yukawa Coupling Ratios in the CMSSM
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DOI：
10.1103/physrevd.85.035025
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发表时间：
2011-11
影响因子：
5
通讯作者：
S. Antusch;L. Calibbi;Vinzenz Maurer;Maurizio Monaco;Martin Spinrath
中科院分区：
文献类型：
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作者：
S. Antusch;L. Calibbi;Vinzenz Maurer;Maurizio Monaco;Martin Spinrath
我们分析了微调的约束最小超对称标准模型（CMSSM）在目前和预期的ATLAS和CMS超对称搜索。即使具有10/fb的数据并且没有发现SUSY有效区域，也可能保持微调小于20。此外，我们还研究了GUT尺度汤川耦合关系的微调代价。考虑到$（g-2）_\mu $的2$\sigma $约束，并微调小于30，得到允许的范围$y_\tau/y_B =[1.31，1.70]$，这指向替代的GUT预测$y_\tau/y_B = 3/2 $。将$（g-2）_\mu $约束放宽到5 $\sigma $将可能的区域扩展到[1.02，1.70]，允许近似的$B-\tau $Yukawa耦合统一。
We analyse the fine-tuning in the Constrained Minimal Supersymmetric Standard Model (CMSSM) in the light of the present and expected ATLAS and CMS SUSY searches. Even with 10/fb of data and no discovery of SUSY valid regions might remain with fine-tuning less than 20. Moreover we investigate the fine-tuning price of GUT scale Yukawa coupling relations. Considering a 2$\sigma$ constraint for $(g-2)_\mu$ and fine-tuning less than 30 yields an allowed range of $y_\tau/y_b = [1.31,1.70]$, which points towards the alternative GUT prediction $y_\tau/y_b = 3/2$. Relaxing the $(g-2)_\mu$ constraint to 5$\sigma$ extends the possible region to [1.02,1.70], allowing for approximate $b-\tau$ Yukawa coupling unification.