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arXiv 0909.4894hep-ex
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在CMS上重建高横动量顶夸克

Reconstruction of High Transverse Momentum Top Quarks at CMS

Gavril Giurgiu

摘要:

在标准模型的许多扩展中,出现了衰减为ttbar对的高质量共振。这些衰变产生的顶夸克具有高横动量,并且它们的衰变产物由于进入实验室框架而高度准直。结果,重建ttbar事件的标准技术开始失效。在这次演讲中,我们将讨论在CMS上探测引导顶夸克的前景。提出了一种新的顶喷标记算法。该算法实现了46%的效率为助推顶部喷流和拒绝的一般QCD喷流与600 GeV/ $c$的横向动量为98.5%。

英文摘要:

High mass resonances decaying into ttbar pairs appear in many extensions of the Standard Model. The top quarks from these decays have high transverse momenta and their decay products are highly collimated due to the boost into the lab frame. As a result the standard techniques for reconstructing ttbar events begin to fail. In this talk we discuss the prospects for detecting booted top quarks at CMS. A new top jet tagging algorithm is presented. This algorithm achieves an efficiency of 46% for boosted top jets and rejection of 98.5% for generic QCD jets with transverse momenta of 600 GeV/$c$.

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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