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arXiv 1204.2885hep-ph
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在大型强子对撞机上的一个类似顶部的等单线费米子的清晰信号

A clean signal for a top-like isosinglet fermion at the Large Hadron Collider

Aarti Girdhar, Biswarup Mukhopadhyaya

摘要:

我们预测在大型强子对撞机($\sqrt s)$ =14 TeV的情况下,有一个顶状,电荷+2/3矢量类等单线态费米子的干净的信号。这样的夸克,通过与标准模型顶部的混合,可以通过改变味道的Z玻色子耦合和改变味道的汤川相互作用经历衰变。我们集中在后一个通道,并研究的情况下,在其配对生产,重夸克对产生两个顶部和两个希格斯玻色子玻色子。我们表明,每个希格斯衰变的情况下,在$b\bar{b}$通道,可以有一个相当独特的和背景的自由信号,可以揭示这种矢量类的isosinglet夸克的存在。

英文摘要:

We predict a clean signal at the Large Hadron Collider ($\sqrt s)$=14 TeV for a scenario where there is a top-like, charge +2/3 vectorlike isosinglet fermion. Such a quark, via mixing with the standard model top, can undergo decays via both flavour-changing Z-boson coupling and flavour-changing Yukawa interactions. We concentrate on the latter channel, and study the situation where, following its pair-production, the heavy quark pair gives rise to two tops and two Higgs boson. We show that the case where each Higgs decays in the $b\bar{b}$ channel, there can be a rather distinct and background-free signal that can unveil the existence of the vectorlike isosinglet quark of this kind.

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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