arXiv 1806.084512018-06-21hep-ph

电弱对称性被中性扇区破缺：小层次问题的动力学松弛

Electroweak symmetry breaking by a neutral sector: Dynamical relaxation of the little hierarchy problem

Bumseok Kyae

备注：: 7 pages, 2 figures

摘要：

基于最小超对称标准模型（MSSM）的单态扩展，提出了一种新的小层次问题的动力学松弛机制。在这种情况下，MSSM单线态的小软质量参数导致了电弱对称性破缺和非零的希格斯真空期望值，而希格斯玻色子的大软质量参数- m_{h_u} ^2的影响被MSSM单线态的平坦方向动态地补偿了。由于引力介导的超对称破缺效应和相关的汤川耦合相对较小，即使终止质量大于10或20 TeV，小单线态的软质量和Z玻色子质量也可以得到保护。单重态的软质量参数的“焦点”可以出现在停止质量标度周围，因此各种微调措施可以降低到远低于100。由于相对较大的规范介导的影响，MSSM超伴侣比实验边界重得多，并且不需要的风味变化过程被充分抑制。

英文摘要：

We propose a new dynamical relaxation mechanism of the little hierarchy problem, based on a singlet extension of the minimal supersymmetric standard model (MSSM). In this scenario, the small soft mass parameter of an MSSM singlet is responsible for the electroweak symmetry breaking and the non-zero Higgs vacuum expectation value, whereas the effect of the large soft mass parameter of the Higgs boson, -m_{h_u}^2 is dynamically compensated by a flat direction of the MSSM singlets. The small singlet's soft mass and the Z boson mass can be protected, even if the stop mass is heavier than 10 or 20 TeV, since the gravity-mediated supersymmetry breaking effects and the relevant Yukawa couplings are relatively small. A "focus point" of the singlet's soft mass parameter can emerge around the stop mass scale, and so various fine-tuning measures can reduce well below 100. Due to the relatively large gauge-mediated effects, the MSSM superpartners are much heavier than the experimental bounds, and the unwanted flavor changing processes are adequately suppressed.

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。

摘要：

英文摘要：

相关论文