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arXiv 1105.3172hep-thhep-ph
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F项超对称破缺的真空统计和参数调谐

Vacuum statistics and parameter tuning for F-term supersymmetry breaking

Zheng Sun

摘要:

本文利用EFT方法研究了一般F项超对称破缺模型的真空统计性质。在拉格朗日参数光滑分布的情况下,在正则Kähler势下的整体超对称模型中,超对称破缺真空是罕见的,在一般Kähler势下的整体超对称模型和SUGRA模型中,超对称破缺真空在超对称破缺标度的截断点附近都有一个峰值分布.在拉格朗日量中加入不同的质量标度后,我们比较了超对称真空和非超对称真空的总数,并定量地估计了超对称破缺的稀有性。的EFT方法提供了一个一般的视图的亚稳态超对称性打破真空所需的参数调整量。调谐也表明了R对称性在超对称性破缺中的重要性,甚至对于亚稳超对称性破缺。

英文摘要:

We carry out a model-independent EFT method study on the vacuum statistics of general F-term SUSY breaking models. Assuming a smooth distribution of Lagrangian parameters, SUSY breaking vacua are rare in global SUSY models with a canonical Kähler potential, and have a peaked distribution near the cut-off of the SUSY breaking scale in both global SUSY and SUGRA models with a general Kähler potential. After including different mass scales in the Lagrangian, we compare the total number of SUSY and non-SUSY vacua and estimate quantitatively the rareness of SUSY breaking. The EFT method provides a general view to the amount of parameter tuning needed for a metastable SUSY breaking vacuum. The tuning also indicates the importance of R-symmetries in SUSY breaking even for metastable SUSY breaking.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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