arXiv 0709.40602007-09hep-phhep-th

一个简单实用的超对称破缺模型

A Simple and Realistic Model of Supersymmetry Breaking

Yasunori Nomura, Michele Papucci

备注：: 19 pages, version to appear in Phys. Lett. B
发表信息：: Phys.Lett.B661:145-153,2008
DOI：: 10.1016/j.physletb.2008.01.052

摘要：

我们提出了一个简单而现实的超对称破缺模型。除了最小超对称标准模型外，我们只引入了一个隐扇形规范群SU（5）和三个场X，F和\bar{F}。超对称性在势能的局部极小值处破缺，其效应通过标准模型规范环和被截断尺度（统一尺度）抑制的局部算符传递到超对称标准模型扇区。局部算子的形式由U（1）对称性控制。所产生的超对称性破缺和μ参数的大小相当，没有味道或CP违反条款的出现。前两代超粒子的谱是最小规范介导的谱，信使数N_mess = 5，信使标度10^11 GeV <M_mess <10^13 GeV。然而，希格斯玻色子玻色子和第三代超粒子的光谱可以偏离它。最轻的超对称粒子是质量为（1 - 10）GeV的引力子。

英文摘要：

We present a simple and realistic model of supersymmetry breaking. In addition to the minimal supersymmetric standard model, we only introduce a hidden sector gauge group SU(5) and three fields X, F and \bar{F}. Supersymmetry is broken at a local minimum of the potential, and its effects are transmitted to the supersymmetric standard model sector through both standard model gauge loops and local operators suppressed by the cutoff scale, which is taken to be the unification scale. The form of the local operators is controlled by a U(1) symmetry. The generated supersymmetry breaking and mu parameters are comparable in size, and no flavor or CP violating terms arise. The spectrum of the first two generation superparticles is that of minimal gauge mediation with the number of messengers N_mess = 5 and the messenger scale 10^11 GeV < M_mess < 10^13 GeV. The spectrum of the Higgs bosons and third generation superparticles, however, can deviate from it. The lightest supersymmetric particle is the gravitino with a mass of order (1-10) GeV.

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摘要：

英文摘要：

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