标题： 通量MSSM的唯象学 显示英文标题

标题： Phenomenology of a Fluxed MSSM

摘要： 我们分析了一组由IIB型弦orientifold中的通量诱导超对称(SUSY)破缺所启发的最小超对称标准模型(MSSM)软项的物理事象。 该方案极为受限，基本上只有两个自由质量参数：一个参数M，它设定了软项的尺度，以及mu参数。 在施加一致的辐射电弱对称破缺(EWSB)之后，该模型仅依赖于一个质量参数（例如，M）。 尽管如此，发现与EWSB条件一致。 我们证明这些条件对于mu<0有两个解，而对于mu>0则没有解。 参数tan beta作为预测结果出现，对于一个解约为3-5，对于另一个解约为25-40，这取决于M和顶夸克质量。 我们进一步考察了来自b->s gamma、μ子g-2、希格斯质量限制和WMAP对暗物质的约束对模型的进一步限制。 MSSM谱由单一自由参数M来预测。低tan beta分支与相对较轻的谱一致，尽管如果最轻中性微子不稳定，则它仅与标准宇宙学相容。 高tan beta分支与所有现象学约束相容，但具有相当重的谱。 我们认为，如果在基础理论中存在额外的关系式mu=-2M，那么与此重谱相关的精细调节将得到显著改善。 显示英文摘要

摘要： We analyze the phenomenology of a set of minimal supersymmetric standard model (MSSM) soft terms inspired by flux-induced supersymmetry (SUSY)-breaking in Type IIB string orientifolds. The scheme is extremely constrained with essentially only two free mass parameters: a parameter M, which sets the scale of soft terms, and the mu parameter. After imposing consistent radiative electro-weak symmetry breaking (EWSB) the model depends upon one mass parameter (say, M). In spite of being so constrained one finds consistency with EWSB conditions. We demonstrate that those conditions have two solutions for mu<0, and none for mu>0. The parameter tan beta results as a prediction and is approximately 3-5 for one solution, and 25-40 for the other, depending upon M and the top mass. We examine further constraints on the model coming from b->s gamma, the muon g-2, Higgs mass limits and WMAP constraints on dark matter. The MSSM spectrum is predicted in terms of the single free parameter M. The low tan beta branch is consistent with a relatively light spectrum although it is compatible with standard cosmology only if the lightest neutralino is unstable. The high tan beta branch is compatible with all phenomenological constraints, but has quite a heavy spectrum. We argue that the fine-tuning associated to this heavy spectrum would be substantially ameliorated if an additional relationship mu=-2M were present in the underlying theory.