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arXiv 1806.01263hep-phcs.CV
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一种神经网络顶部标记算法的红外安全性

Infrared Safety of a Neural-Net Top Tagging Algorithm

Korea University(高丽大学);Korea Institute for Advanced Study(韩国高等研究院);Cornell University(康奈尔大学)

Suyong Choi, Seung J. Lee, Maxim Perelstein

摘要:

基于神经网络的算法提供了一个很有前途的方法来射流分类问题,如助推顶部射流标记。到目前为止,基于NN的顶级标记器在Monte Carlo研究中表现出出色的性能。在本文中,我们构建了一个基于卷积神经网络(CNN)的top-jet标记器,并将其应用于部分子水平提升的top样本,有和没有一个额外的胶子在最终状态。我们表明,由CNN定义的喷流观测服从红外安全的规范定义:它不受额外胶子的存在,只要它是软的或与夸克之一共线。我们的研究结果表明,CNN标记器是强大的软和共线的最终状态辐射的蒙特卡罗发生器可能的错误建模。

英文摘要:

Neural network-based algorithms provide a promising approach to jet classification problems, such as boosted top jet tagging. To date, NN-based top taggers demonstrated excellent performance in Monte Carlo studies. In this paper, we construct a top-jet tagger based on a Convolutional Neural Network (CNN), and apply it to parton-level boosted top samples, with and without an additional gluon in the final state. We show that the jet observable defined by the CNN obeys the canonical definition of infrared safety: it is unaffected by the presence of the extra gluon, as long as it is soft or collinear with one of the quarks. Our results indicate that the CNN tagger is robust with respect to possible mis-modeling of soft and collinear final-state radiation by Monte Carlo generators.

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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