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arXiv 1406.3294hep-ph
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非最小希格斯扇区的指纹

Fingerprinting non-minimal Higgs sectors

Shinya Kanemura, Koji Tsumura, Kei Yagyu, Hiroshi Yokoya

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摘要：

在大型强子对撞机上发现标准模型的希格斯玻色子后，希格斯区的结构仍然未知。我们将讨论如何在未来的对撞机实验中通过直接和间接搜索额外的希格斯玻色子来确定它。首先，我们评估了预期的排除区域的额外的中性希格斯玻色子的质量从直接搜索在LHC与14 TeV的碰撞能量在两个希格斯偶极子模型与软破缺$Z_2$对称性。其次，如果用规范玻色子测量的耦合常数与标准模型值略有偏差，则在未来的实验中对希格斯玻色子耦合的精确测量可用于间接搜索扩展的希格斯扇区。特别地，在离散对称性软破缺的双Higgs模型中，存在四种类型的Yukawa相互作用，因此可以通过测量Yukawa耦合常数的偏差来区分它们。此外，我们可以通过检测标准模型类希格斯玻色子的耦合常数的偏差模式，用未来的精确数据对各种扩展的希格斯扇区进行指纹识别。我们演示了如何模式的偏差可以是不同的希格斯部门预测的电弱ρ参数是统一的，如模型与额外的一个同位旋单线态，一个双峰，三重态或七重态。我们的结论是，只要希格斯玻色子的规范耦合常数与标准模型的预测略有不同，但足以在LHC及其高光度运行或在国际直线对撞机上检测到，我们可以确定非最小希格斯扇区，即使没有直接发现额外的希格斯玻色子玻色子在LHC。

英文摘要：

After the discovery of the standard-model-like Higgs boson at the LHC, the structure of the Higgs sector remains unknown. We discuss how it can be determined by the combination of direct and indirect searches for additional Higgs bosons at future collider experiments. First of all, we evaluate expected excluded regions for the mass of additional neutral Higgs bosons from direct searches at the LHC with the 14 TeV collision energy in the two Higgs doublet models with a softly-broken $Z_2$ symmetry. Second, precision measurements of the Higgs boson couplings at future experiments can be used for the indirect search of extended Higgs sectors if measured coupling constant with the gauge boson slightly deviates from the standard model value. In particular, in the two Higgs doublet model with the softly-broken discrete symmetry, there are four types of Yukawa interactions, so that they can be discriminated by measuring the pattern of deviations in Yukawa coupling constants. Furthermore, we can fingerprint various extended Higgs sectors with future precision data by detecting the pattern of deviations in the coupling constants of the standard-model-like Higgs boson. We demonstrate how the pattern of deviations can be different among various Higgs sectors which predict the electroweak rho parameter to be unity; such as models with additional an isospin singlet, a doublet, triplets or a septet. We conclude that as long as the gauge coupling constant of the Higgs boson slightly differs from the standard model prediction but is enough to be detected at the LHC and its high-luminosity run or at the International Linear Collider, we can identify the non-minimal Higgs sector even without direct discovery of additional Higgs bosons at the LHC.

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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