4D constructions of supersymmetric extra dimensions and gaugino mediation
4D constructions of supersymmetric extra dimensions and gaugino mediation
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超对称额外维度和高吉诺中介的 4D 结构
DOI：
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发表时间：
2001
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通讯作者：
G. Kribs
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作者：
C. Csáki;J. Erlich;C. Grojean;C. Grojean;G. Kribs
我们提出了四维规范理论，在低能量符合高维超对称（SUSY）规范理论的横向晶格。我们表明，在最简单的情况下，纯5D超对称杨米尔斯理论有一个增强的超对称性在连续极限没有微调。这一结果在物质场的存在下不再成立，在这种情况下，微调是必要的，以确保更高维的洛伦兹不变性和超对称性。我们使用这种结构来生成4D模型，模仿超对称性断裂的高吉诺调解。在这些模型中，超对称破缺被介导到MSSM的方式是假设物理高吉诺是许多规范本征态高吉诺的混合：其中一个耦合到超对称破缺扇区，而另一个耦合到MSSM物质场。晶格可以粗到只有两个规范群，同时仍然获得特征的高吉诺介导的软破缺项。
We present 4D gauge theories which at low energies coincide with higher dimensional supersymmetric (SUSY) gauge theories on a transverse lattice. We show that in the simplest case of pure 5D SUSY Yang-Mills theory there is an enhancement of SUSY in the continuum limit without fine tuning. This result no longer holds in the presence of matter fields, in which case fine tuning is necessary to ensure higher dimensional Lorentz invariance and supersymmetry. We use this construction to generate 4D models which mimic gaugino mediation of SUSY breaking. The way supersymmetry breaking is mediated in these models to the MSSM is by assuming that the physical gauginos are a mixture of a number of gauge eigenstate gauginos: one of these couples to the SUSY breaking sector, while another couples to the MSSM matter fields. The lattice can be as coarse as just two gauge groups while still obtaining the characteristic gaugino-mediated soft breaking terms.