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arXiv 0806.2608hep-ph
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LHC上的孤独希格斯

Lone Higgs at the LHC

Ken Hsieh, C. -P. Yuan

摘要:

我们讨论了大型强子对撞机(LHC)运行10 fb^{-1}后只发现一个希格斯玻色子的可能情况,并试图将这个希格斯玻色子确定为标准模型(SM)、最小普适额外维模型(MUED)、最小T宇称希格斯模型(LHT)或最小超对称标准模型(MSSM)的希格斯玻色子,仅使用胶子熔合产生截面积和双光子分支比的测量。在MUED中,通过解耦任何新的物理足以逃避LHC的发现,信号与SM的偏差在统计上并不显著。然而,在LHT和MSSM中,有可能在与这种“孤希格斯场景”一致的信号中存在显著偏差,并且,在非常大的抑制的情况下,我们可以在发现任何新的共振之前区分MSSM和LHT。从单独的希格斯粒子场景和标准模型预测的测量偏差(无论是否具有统计学意义)开始,我们提供了测试,可以区分发现新的物理特征的模型和搜索策略,随着积分亮度的增加。

英文摘要:

We address the possible scenario that the Large Hadron Collider (LHC) discovers only a Higgs boson after 10 fb^{-1} of operation, and attempt to identify this Higgs boson as that of the Standard Model (SM), the minimal universal extra dimension model (MUED), the littlest Higgs model with T-parity (LHT), or the minimal supersymmetric Standard Model (MSSM), using only the measurement of the product of gluon-fusion production cross section and the di-photon branching ratio. In MUED, by decoupling any new physics sufficiently to evade the discovery reach at the LHC, the deviation of the signal from the SM is not statistically significant. However, in LHT and MSSM, it is possible to have a significant deviation in the signal that is consistent with this "lone Higgs scenario", and, in the case of a very large suppression, we can distinguish MSSM and LHT before the discovery of any new resonances. Starting with the lone Higgs scenario and the deviation in this measurement from the Standard Model prediction (whether or not statistically significant), we offer tests that may discriminate the models and search strategies of discovering new physics signatures with increasing integrated luminosity.

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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