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arXiv 1201.4891hep-ph
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标度不变双Higgs模型中标量质量的辐射修正和混合

Radiative Corrections to Scalar Masses and Mixing in a Scale Invariant Two Higgs Doublet Model

Jae Sik Lee, Apostolos Pilaftsis

摘要:

本文研究了经典标度不变的双希格斯玻色子模型(SI-2 HDM)的质量谱。由于规范相互作用、希格斯自耦合和顶夸克汤川耦合的量子环效应,该理论的经典尺度对称性被明确打破。我们确定允许的参数空间与微扰么正性和电弱精密数据兼容。考虑到LEP和最近LHC对类标准模型希格斯玻色子H_SM的排斥限制,我们得到了SI-2 HDM重Higgs部分的质量谱的严格限制.特别是,如果M_{H_SM} \sim 125 GeV,SI-2 HDM强烈支持这样的情况,其中至少一个非标准中性希格斯玻色子的质量接近400 GeV,并且一般与带电的希格斯玻色子简并,而第三个中性希格斯标量比~ 500 GeV轻。

英文摘要:

We study the Higgs-boson mass spectrum of a classical scale-invariant realization of the two-Higgs-doublet model (SI-2HDM). The classical scale symmetry of the theory is explicitly broken by quantum loop effects due to gauge interactions, Higgs self-couplings and top-quark Yukawa couplings. We determine the allowed parameter space compatible with perturbative unitarity and electroweak precision data. Taking into account the LEP and the recent LHC exclusion limits on a Standard-Model-like Higgs boson H_SM, we obtain rather strict constraints on the mass spectrum of the heavy Higgs sector of the SI-2HDM. In particular, if M_{H_SM} \sim 125 GeV, the SI-2HDM strongly favours scenarios, in which at least one of the non-standard neutral Higgs bosons has a mass close to 400 GeV and is generically degenerate with the charged Higgs boson, whilst the third neutral Higgs scalar is lighter than ~ 500 GeV.

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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