Comprehensive study of two Higgs doublet models in light of the new boson with mass around 125 GeV

被引：27

作者：

Chang, Sanghyeon ^{[1
]}

Kang, Sin Kyu ^{[2
,3
]}

Lee, Jong-Phil ^{[2
,3
]}

Lee, Kang Young ^{[4
]}

Park, Seong Chan ^{[5
]}

Song, Jeonghyeon ^{[1
]}

机构：

[1] Konkuk Univ, Div Quantum Phases & Devices, Sch Phys, Seoul 143701, South Korea

[2] Seoul Tech, Inst Convergence Fundamental Studies, Seoul 139743, South Korea

[3] Seoul Tech, Sch Liberal Arts, Seoul 139743, South Korea

[4] Gyeongsang Natl Univ, Dept Phys Educ, Jinju 660701, South Korea

[5] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 05期

基金：

新加坡国家研究基金会;

关键词：

Higgs Physics; Beyond Standard Model; FLAVOR; PHENOMENOLOGY; COLLIDERS;

D O I：

10.1007/JHEP05(2013)075

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A new boson of mass roughly 125 GeV has been recently reported by the ATLAS and CMS collaborations. Although its signals in various decay modes resemble those of the standard model (SM) Higgs boson, observed are the combinations of entangled information about the production, decay rates and total decay width of the new boson. In addition, some decay channels show non-negligible deviation from the SM expectation, such as the 2 sigma excess in the diphoton channel. In the four types (I, II, X and Y) of two Higgs doublet models, we perform the global chi(2) fit in three scenarios: (i) the new boson is the light CP-even Higgs boson h(0); (ii) it is the heavy CP-even Higgs boson H-0; (iii) the signals are from the degenerate state of h(0) and the pseudoscalar A(0). Considering other phenomenological constraints such as flavor physics, electroweak precision data, and the LEP search for the Higgs boson, we find that the first scenarios in Type II provides the best fit. And the other models are also as good as the SM in explaining the LHC Higgs data.

引用

页数：18

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