Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA.
Phys Rev Lett. 2010 Aug 27;105(9):091802. doi: 10.1103/PhysRevLett.105.091802. Epub 2010 Aug 25.
We present a generalization of the next-to-minimal supersymmetric standard model, with an explicit μ term and a supersymmetric mass for the singlet superfield, as a route to alleviating the little hierarchy problem of the minimal supersymmetric standard model (MSSM). Though this model does not address the μ problem of the MSSM, we are able to generate masses for the lightest neutral Higgs boson up to 140 GeV with top squarks below the TeV scale, all couplings perturbative to the gauge unification scale, and with no need to fine-tune parameters in the scalar potential. This model more closely resembles the MSSM phenomenologically than the canonical next-to-minimal supersymmetric standard model.
我们提出了一种次最小 supersymmetric 标准模型的推广，其中包含一个显式的 μ 项和一个 singlet 超场的 supersymmetric 质量，作为缓解最小 supersymmetric 标准模型 (MSSM) 中微小层次问题的一种途径。虽然这个模型并没有解决 MSSM 的 μ 问题，但我们能够在顶夸克低于 TeV 尺度的情况下，通过在规范统一尺度上的微扰耦合，生成轻子中性 Higgs 玻色子的质量高达 140GeV，而无需微调标量势中的参数。与规范的次最小 supersymmetric 标准模型相比，这个模型在现象学上更类似于 MSSM。
