Upper bound on the gluino mass in supersymmetric models with extra matters
Upper bound on the gluino mass in supersymmetric models with extra matters
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DOI：
10.1016/j.physletb.2016.07.061
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发表时间：
2016-06
影响因子：
4.4
通讯作者：
T. Moroi;T. Yanagida;N. Yokozaki
中科院分区：
文献类型：
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作者：
T. Moroi;T. Yanagida;N. Yokozaki
本文讨论了具有类矢量额外物质的超对称模型中胶子质量的上界。为了实现观测到的125 GeV的希格斯质量，在超对称模型中，胶子质量从上到下是有界的。在TeV附近的矢量状额外物质的存在下，我们表明，这样的上限上的胶子质量显着减少的情况下，最小的超对称标准模型。这是由于这样的事实，即辐射产生的停止质量，以及停止三线性耦合增强的矢量样多重峰的存在下。在含有额外物质的模型的参数空间中，特别是在相当大的tan δ β（两个希格斯玻色子的真空期望值之比）的情况下，要求胶子的质量轻于103 TeV，这很可能在即将到来的LHC实验的范围内。
We discuss the upper bound on the gluino mass in supersymmetric models with vector-like extra matters. In order to realize the observed Higgs mass of 125 GeV, the gluino mass is bounded from above in supersymmetric models. With the existence of the vector-like extra matters at around TeV, we show that such an upper bound on the gluino mass is significantly reduced compared to the case of minimal supersymmetric standard model. This is due to the fact that radiatively generated stop masses as well the stop trilinear coupling are enhanced in the presence of the vector-like multiplets. In a wide range of parameter space of the model with extra matters, particularly with sizable tan β (which is the ratio of the vacuum expectation values of the two Higgs bosons), the gluino is required to be lighter than∼ 3 TeV, which is likely to be within the reach of forthcoming LHC experiment.