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arXiv 1003.1276hep-ph
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5d超对称性的唯象研究

A phenomenological study of 5d supersymmetry

Gautam Bhattacharyya, Tirtha Sankar Ray

摘要:

超对称性和额外维度不一定是TeV尺度及更高尺度的物理学中相互排斥的选项。在本文中,我们设想了一个唯象的情况下,嵌入在一个平坦的5d $S_1 /Z_2$ orbifold的四维约束最小超对称标准模型,与反半径的紧化在TeV的规模。规范,希格斯和第三代物质多重态被放置在块中。从4d的角度来看,大块具有N=2的超对称性,这需要一个特殊的非重整化定理,从而对各种参数的重整化群运行产生重大的数值影响。膜超对称对应于N=1,我们假设它以一种未指明但唯象上可接受的方式破缺。在此基础上,我们研究了规范耦合、汤川耦合和N=1膜超对称破缺软质量如何贯穿激发Kaluza-Klein态的能量标度。我们提出了我们的结果,通过显示允许/不允许区的平面上的共同标量质量($m_0$)和共同的Gaugino质量($M_{1/2}$)。我们的图是经常显示的4d $m_0$ - $M_{1/2}$图的第一个5d版本,我们提供了4d和5d图之间差异的原因。

英文摘要:

Supersymmetry and extra dimension need not be mutually exclusive options of physics for the TeV scale and beyond. In this paper, we envisage a phenomenological scenario by embedding the 4d constrained minimal supersymmetric standard model in a flat 5d $S_1 /Z_2$ orbifold, with the inverse radius of compactification at the TeV scale. The gauge, Higgs and the third generation matter multiplets are placed in the bulk. From a 4d perspective, the bulk has N=2 supersymmetry which entails a special non-renormalization theorem giving rise to a significant numerical impact on the renormalization group running of various parameters. The brane supersymmetry corresponds to N=1 which we assume to be broken in an unspecified but phenomenologically acceptable way. Given this set-up, we study how the gauge and Yukawa couplings and the N=1 brane supersymmetry breaking soft masses run through the energy scale exciting the Kaluza-Klein states at regular interval. We present our results by showing the allowed/disallowed zone in the plane of the common scalar mass ($m_0$) and common gaugino mass ($M_{1/2}$). Our plots are the first 5d versions of the often displayed 4d $m_0$--$M_{1/2}$ plots, and we provide reasons behind the differences between the 4d and 5d plots.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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