Dimopoulos Savas, Howe Kiel, March-Russell John
Department of Physics, Stanford University, Stanford, California 94305, USA.
Department of Physics, Stanford University, Stanford, California 94305, USA and SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
Phys Rev Lett. 2014 Sep 12;113(11):111802. doi: 10.1103/PhysRevLett.113.111802. Epub 2014 Sep 9.
We consider 4D weak scale theories arising from 5D supersymmetric (SUSY) theories with maximal Scherk-Schwarz breaking at a Kaluza-Klein scale of several TeV. Many of the problems of conventional SUSY are avoided. Apart from 3rd family sfermions the SUSY spectrum is heavy, with only ∼50% tuning at a gluino mass of ∼2 TeV and a stop mass of ∼650 GeV. A single Higgs doublet acquires a vacuum expectation value, so the physical Higgs boson is automatically standard-model-like. A new U(1)^{'} interaction raises m_{h} to 126 GeV. For minimal tuning the associated Z^{'}, as well as the 3rd family sfermions, must be accessible to LHC13. A gravitational wave signal consistent with hints from BICEP2 is possible if inflation occurs when the extra dimensions are small.
我们考虑源于五维超对称（SUSY）理论的四维弱标度理论，其在几个太电子伏特的卡鲁扎 - 克莱因标度处具有最大的谢尔 - 施瓦茨破缺。传统超对称的许多问题得以避免。除了第三代超对称费米子外，超对称谱很重，在胶微子质量约为2太电子伏特和顶夸克超对称伙伴质量约为650吉电子伏特时，仅有约50%的微调。单个希格斯二重态获得真空期望值，因此物理希格斯玻色子自动类似标准模型。一种新的U(1)'相互作用将希格斯玻色子质量提升至126吉电子伏特。为实现最小微调，相关的Z'以及第三代超对称费米子必须能在大型强子对撞机13（LHC13）中被探测到。如果在额外维度很小时发生暴胀，那么就有可能出现与BICEP2的暗示相一致的引力波信号。
