Building a Better Boosted Top Tagger

Building a Better Boosted Top Tagger
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构建更好的增强型顶级标记器

DOI:
10.1103/physrevd.91.034035
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发表时间:
2014
期刊:
影响因子:
5
通讯作者:
D. Neill
D. Neill
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
A. Larkoski;I. Moult;D. Neill

文献摘要

被引文献

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在大型强子对撞机上,区分强子衰变的增强型顶夸克和大质量QCD喷注是一个重要的挑战。本文利用功率计数的方法研究了为顶部标记而设计的喷流子结构观测值,并对其性能进行了深入的分析。我们引入了一类由能量相关函数形成的强大的新的判别式,它的性能优于广泛使用的N-次突变性。这些观测数据以一种非常不平凡的形式出现,表明了系统化的方法对其构建的重要性。
Distinguishing hadronically decaying boosted top quarks from massive QCD jets is an important challenge at the Large Hadron Collider. In this paper we use the power counting method to study jet substructure observables designed for top tagging, and gain insight into their performance. We introduce a powerful new family of discriminants formed from the energy correlation functions which outperform the widely used N-subjettiness. These observables take a highly non-trivial form, demonstrating the importance of a systematic approach to their construction.