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arXiv 0712.2693hep-ph
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CERN大型强子对撞机上的普适双单重态Higgs耦合和唯象

Universal Doublet-Singlet Higgs Couplings and phenomenology at the CERN Large Hadron Collider

Gautam Bhattacharyya, Gustavo C. Branco, S. Nandi

摘要:

我们考虑一个最小的标准模型的扩展,其中一个真正的,规范单标量场被添加到标准谱。引入标量耦合普适性的假设,我们得到了一个具有一组非常独特和可检验的预言的场景:(i)标准模型Higgs和新态之间的混合接近最大值,(ii)两个Higgs质量本征态的比率是固定的($\sim \sqrt{3}$),(iii)两个本征态中的每一个的衰变模式都是标准模型样的。我们还研究了电弱精度测试如何约束这种情况。我们预测较轻的希格斯粒子在114和145 GeV之间,因此较重的希格斯粒子在198和250 GeV之间。该模型的预测可以在即将到来的LHC上进行测试。

英文摘要:

We consider a minimal extension of the standard model where a real, gauge singlet scalar field is added to the standard spectrum. Introducing the Ansatz of universality of scalar couplings, we are led to a scenario which has a set of very distinctive and testable predictions: (i) the mixing between the standard model Higgs and the new state is near maximal, (ii) the ratio of the two Higgs mass eigenstates is fixed ($\sim \sqrt{3}$), (iii) the decay modes of each of the two eigenstates are standard model like. We also study how electroweak precision tests constrain this scenario. We predict the lighter Higgs to lie in the range of 114 and 145 GeV, and hence the heavier one between 198 and 250 GeV. The predictions of the model can be tested at the upcoming 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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