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双Higgs模型中带电Higgs的产生--τν通道

Charged-Higgs production in the Two-Higgs-Doublet Model --- the τνchannel

Lorenzo Basso, Per Osland, Giovanni Marco Pruna

备注：
26 pages, 13 figures. v2 Version published in JHEP
发表信息：
JHEP 1506 (2015) 083
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摘要：

我们更新了允许的参数空间的CP违反2 HDM与II型汤川耦合，生存目前的实验和理论约束的模型。对于一组有代表性的允许参数点，我们研究了生产带电希格斯玻色子，无论是在大型强子对撞机在14 TeV和在未来可能的强子对撞机在30 TeV。考虑了两类产生机制，“玻色子”（pp \to H^ \pm W^ \mp X）和“费米子”（pp \to H^+ \bar t（b）X）。在评述了我们以前对H^ \pm \to W^ \pm H_1的研究之后，我们着重于对H^ \pm \to τν的研究，在部分子水平上进行了详细的信号背景分析。考虑到CP破坏时提供的增加功能，即，参数空间的扩展和可能的CP-奇标量玻色子的混合仅略微增加了发现前景，当考虑增加的亮度和更高的能量时，发现前景仍然非常具有挑战性。

英文摘要：

We update the allowed parameter space of the CP-violating 2HDM with Type II Yukawa couplings, that survives the current experimental and theoretical constraints on the model. For a representative set of allowed parameter points, we study the production of charged Higgs bosons, both at the LHC at 14 TeV and at a possible future hadronic collider at 30 TeV. Two classes of production mechanisms are considered, "bosonic" (pp\to H^\pm W^\mp X) and "fermionic" (pp \to H^+ \bar t (b) X). After commenting on our previous H^\pm\to W^\pm H_1 investigation, we focus on the tauonic decay mode, H^\pm \to τν, performing a detailed signal-over-background analysis at the parton level. The increased features provided when considering CP violation, i.e., the extension of the parameter space and the mixing of the would-be CP-odd scalar boson, only marginally increase the discovery prospects, which remain very challenging both when increased luminosities and higher energies are considered.

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