arXiv 0812.23622008-12-12hep-ph

喷流定义的最新进展

Recent progress in defining jets

Gregory Soyez

备注：: 10 pages, 6 figures. Contribution to the Ringberg Workshop New Trends in HERA Physics 2008, October 5-10 2008, Ringberg Castle, Tegernsee, Germany
DOI：: 10.1016/j.nuclphysbps.2009.03.120

摘要：

从专门的QCD研究到新的物理背景估计，喷流将在LHC无处不在。在这些会议记录中，我们讨论了最近的两个重要系列的改进。在第一个，我们介绍了新的算法和新的实现以前现有的算法，以治愈他们的前辈的局限性，并满足基本要求。在第二部分中，我们表明，它是最重要的仔细选择射流定义（算法和参数），以优化在大型强子对撞机的运动学重建。值得注意的是，我们表明，虽然在100 GeV左右的规模，R~0.5是一个适当的选择，在TeV规模的集群需要R~1的最佳效率。我们最后表明，我们的结果是有效的存在堆积，提供了一个减法程序。

英文摘要：

From dedicated QCD studies to new physics background estimation, jets will be everywhere at the LHC. In these proceedings, we discuss two important recent series of improvements. In the first one, we introduce new algorithms and new implementations of previously existing algorithms, in order to cure limitations of their predecessors and to satisfy fundamental requirements. In the second part, we show that it is of prime importance to carefully choose the jet definition (algorithm and parameters) to optimise kinematic reconstructions at the LHC. Noticeably, we show that while at scales around 100 GeV, R~0.5 is an appropriate choice, clustering at the TeV scale requires R~1 for optimal efficiency. We finally show that our results are valid in the presence of pileup, provided that a subtraction procedure is applied.

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。

摘要：

英文摘要：

相关论文