Study of the heavy CP-even Higgs with mass 125 GeV in two-Higgs-doublet models at the LHC and ILC

Study of the heavy CP-even Higgs with mass 125 GeV in two-Higgs-doublet models at the LHC and ILC
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在 LHC 和 ILC 的双希格斯双峰模型中研究质量为 125 GeV 的重 CP 偶希格斯粒子

DOI:
10.1007/jhep11(2014)085
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发表时间:
2014-04
期刊:
The Journal of High Energy Physics
影响因子:
--
通讯作者:
Xiao-Fang Han
Xiao-Fang Han
中科院分区:
其他
文献类型:
--
作者:
Lei Wang;Xiao-Fang Han

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本文假设在LHC上发现的125 GeV的Higgs粒子是双Higgs偶态模型中的重CP偶Higgs粒子,并在最新的Higgs信号数据所允许的条件下,考察了I型、II型、轻子特异性和Flipped模型中的参数空间,以及相关的实验和理论约束。此外,我们还展示了LHC和ILC未来对125 GeV希格斯粒子的测量中tan β、sin(β − α)、Hff <$$ Hf\overline{f} $$和HV V耦合的预测极限,包括LHC的积分光度为300 fb−1 LHC-300 fb−1和3000 fb−1(LHC-3000 fb−1)以及s=250$$ \sqrt{s}=250 $$ GeV的ILC(ILC-250 GeV),s=500$$ \sqrt{s}=500 $$ GeV(ILC-500 GeV)和s=1000$$ \sqrt{s}=1000 $$ GeV(ILC-1000 GeV)。假设未来的希格斯信号数据与SM的期望值没有偏差,LHC-300 fb−1、LHC-3000 fb−1和ILC-1000 GeV可以分别在2σ水平上排除II型、翻转和轻子特定模型的错误符号汤川耦合区。在LHC和ILC的未来实验将限制希格斯耦合非常接近SM值,特别是对于HV-V耦合。
A bstractWe assume that the 125 GeV Higgs discovered at the LHC is the heavy CP-even Higgs of the two-Higgs-doublet models, and examine the parameter space in the Type-I, Type-II, Lepton-specific and Flipped models allowed by the latest Higgs signal data, the relevant experimental and theoretical constraints. Further, we show the projected limits on tan β, sin(β − α), Hff¯$$ Hf\overline{f} $$ and HV V couplings from the future measurements of the 125 GeV Higgs at the LHC and ILC, including the LHC with integrated luminosity of 300 fb−1 (LHC-300 fb−1) and 3000 fb−1 (LHC-3000 fb−1) as well as the ILC at s=250$$ \sqrt{s}=250 $$ GeV (ILC-250 GeV), s=500$$ \sqrt{s}=500 $$ GeV (ILC-500 GeV) and s=1000$$ \sqrt{s}=1000 $$ GeV (ILC-1000 GeV). Assuming that the future Higgs signal data have no deviation from the SM expectation, the LHC-300 fb−1, LHC-3000 fb−1 and ILC-1000 GeV can exclude the wrong-sign Yukawa coupling regions of the Type-II, Flipped and Lepton-specific models at the 2σ level, respectively. The future experiments at the LHC and ILC will constrain the Higgs couplings to be very close to SM values, especially for the HV V coupling.
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