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arXiv 1807.01571hep-phhep-ex
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在高亮度LHC生产$VHH$

$VHH$ production at the High-Luminosity LHC

Karl Nordström, Andreas Papaefstathiou

摘要:

我们研究了在高亮度LHC上伴随产生一个矢量玻色子和一对希格斯玻色子($VHH$)的现象。尽管这个通道的速率很低,但截面的缩放表明,测量可能是三线性希格斯玻色子耦合和规范-希格斯扇区中异常相互作用的修改的有用探针。我们专注于$WHH$和$ZHH$生产,使用轻子($W \to l ν$,$Z \to ll$,$Z \to νν$)衰变模式的矢量玻色子和$HH \to 4b$二希格斯衰变模式。我们发现,顶对背景是有问题的$W \to l ν$和$Z \to νν$通道,留下$Z \to ll$作为最有前途的衰变模式。然而,即使对于这个通道,我们发现有限的灵敏度由于低信号速率。我们讨论了一些潜在的改进途径。

英文摘要:

We study the phenomenology of associated production of a vector boson with a pair of Higgs bosons ($VHH$) at the High-Luminosity LHC. Despite the low rate of this channel, the scaling of the cross section suggests a measurement could be a useful probe of modifications of the trilinear Higgs boson coupling and anomalous interactions in the gauge-Higgs sector. We focus on both $WHH$ and $ZHH$ production, using the leptonic ($W \to l ν$, $Z \to ll$, $Z \to νν$) decay modes of the vector bosons and the $HH \to 4b$ di-Higgs decay mode. We show that top pair backgrounds are problematic for the $W \to l ν$ and $Z \to νν$ channels, leaving $Z \to ll$ as the most promising decay mode. However, even for this channel, we find limited sensitivity due to a low signal rate. We discuss some potential avenues for improvement.

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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