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arXiv 0709.2945hep-ph
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亚稳超对称破缺直接规范介导的一个简单模型

A Simple Model of Direct Gauge Mediation of Metastable Supersymmetry Breaking

Naoyuki Haba, Nobuhito Maru

摘要:

通过简单地将Intriligator、Seiberg和Shih模型用双介子超势质量项变形,构建了亚稳态超对称性破缺的直接规范介导模型。没有引入额外的物质场。变形明确地破坏了U(1)_R对称性,并且伪模在一个环处具有非零VEV。我们的亚稳态超对称性破缺真空被证明是足够长的寿命。通过测量味对称性的一个子群,我们的模型可以直接耦合到标准模型,这导致了非零的gaugino质量产生。它也表明,我们的模型可以避免朗道极点问题。我们发现超对称性破缺扇区中的参数受到唯象的约束。

英文摘要:

We construct a model of direct gauge mediation of metastable SUSY breaking by simply deforming the Intriligator, Seiberg and Shih model in terms of a dual meson superpotential mass term. No extra matter field is introduced. The deformation explicitly breaks a U(1)_R symmetry and a pseudo moduli have a nonzero VEV at one-loop. Our metastable SUSY breaking vacuum turns out to be sufficiently long-lived. By gauging a subgroup of flavor symmetry, our model can directly couple to the standard model, which leads to nonvanishing gaugino mass generation. It is also shown that our model can evade the Landau pole problem. We show the parameters in the SUSY breaking sector are phenomenologically constrained.

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