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arXiv 1303.4490hep-phhep-ex
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Y=0的Higgs三重态模型中的LHC双光子和Z+光子Higgs信号

LHC diphoton and Z+photon Higgs signals in the Higgs triplet model with Y=0

Lei Wang, Xiao-Fang Han

摘要:

我们研究了LHC双光子和Z+光子Higgs信号对Y=0的Higgs三重态模型的影响。我们讨论了三种不同的情况:(i)观察到的玻色子是轻希格斯玻色子$h$ ;(ii)它是重希格斯玻色子$H$ ;(iii)观察到的信号是从几乎简并的$h$和$H$。我们发现前两种情况下的Higgs双光子率相对于SM值可以被增强或抑制,这两种情况下的Higgs双光子率可以分别在$1σ$范围内拟合ATLAS和CMS双光子数据.包含性$ZZ^*$发生率被抑制,其超出ATLAS数据的$1σ$范围,但在CMS数据的$1σ$范围内。与此同时,另一个CP偶希格斯玻色子玻色子的产生速率可以被抑制到在对撞机上观察不到。对于第三种情况,Higgs双光子率被抑制,超出了ATLAS数据的$1σ$范围,$ZZ^*$率近似等于SM值。此外,我们发现在三种情景下,$h\to γγ$和$h\to Zγ$的两个比率都呈正相关。

英文摘要:

We study the implications of the LHC diphoton and Z+photon Higgs signals on the Higgs triplet model with Y=0. We discuss three different scenarios: (i) the observed boson is the light Higgs boson $h$; (ii) it is the heavy Higgs boson $H$; (iii) the observed signal is from the almost degenerate $h$ and $H$. We find that the inclusive Higgs diphoton rates in the first two scenarios can be enhanced or suppressed compared to the SM value, which can respectively fit the ATLAS and CMS diphoton data within $1σ$ range. The inclusive $ZZ^*$ rates are suppressed, which are outside $1σ$ range of ATLAS data and within $1σ$ range of CMS data. Meanwhile, another CP-even Higgs boson production rate can be suppressed enough not to be observed at the collider. For the third scenario, the Higgs diphoton rate is suppressed, which is outside $1σ$ range of ATLAS data, and the $ZZ^*$ rate equals to SM value approximately. In addition, we find that the two rates of $h\to γγ$ and $h\to Zγ$ have the positive correlations for the three scenarios.

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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