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arXiv 1802.04666hep-ph
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LHC希格斯玻色子的发现:有限统一理论和SUSY破缺尺度的更新含义

The LHC Higgs Boson Discovery: Updated implications for Finite Unified Theories and the SUSY breaking scale

S. Heinemeyer, M. Mondragon, G. Patellis, N. Tracas, G. Zoupanos

摘要:

有限统一理论(英语:Finite Unified Theories,简称FUTs)是N = 1超对称大统一理论,基于耦合简化原理,在微扰理论中可以使其在所有阶次都是有限的。后者是在微扰论的所有阶次下寻找可重整化理论参数间的重整化群不变关系。到目前为止,FUT已经证明非常成功。特别是,他们在实验发现前一年半就预测了顶夸克的质量,而在发现希格斯玻色子的五年前,一个特殊的FUT预测了质量范围为121 - 126 GeV的轻希格斯玻色子,与LHC的发现惊人地一致。在这里,我们审查的基本性质的超对称理论,特别是有限理论的应用程序的方法减少耦合在其无量纲和量纲部门。然后,我们分析唯象学青睐的FUT,基于SU(5)。这个特殊的FUT导致了MSSM的有限性约束版本,它自然地预测了一个相对较重的光谱,其中包含超过2.7 TeV的有色超对称粒子,这与LHC没有观测到这些粒子相一致。电弱超对称光谱开始低于1 TeV和大部分的允许的光谱的打火机可能是可访问的CLIC。FCC-hh将能够完全测试预测的光谱。

英文摘要:

Finite Unified Theories (FUTs) are N = 1 supersymmetric Grand Unified Theories which can be made finite to all orders in perturbation theory, based on the principle of reduction of couplings. The latter consists in searching for renormalization group invariant relations among parameters of a renormalizable theory holding to all orders in perturbation theory. FUTs have proven very successful so far. In particular, they predicted the top quark mass one and half years before its experimental discovery, while around five years before the Higgs boson discovery a particular FUT was predicting the light Higgs boson in the mass range ~ 121 - 126 GeV, in striking agreement with the discovery at LHC. Here we review the basic properties of the supersymmetric theories and in particular finite theories resulting from the application of the method of reduction of couplings in their dimensionless and dimensionful sectors. Then we analyse the phenomenologically favoured FUT, based on SU(5). This particular FUT leads to a finiteness constrained version of the MSSM, which naturally predicts a relatively heavy spectrum with coloured supersymmetric particles above 2.7 TeV, consistent with the non-observation of those particles at the LHC. The electroweak supersymmetric spectrum starts below 1 TeV and large parts of the allowed spectrum of the lighter might be accessible at CLIC. The FCC-hh will be able to fully test the predicted spectrum.

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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