论文标题

在CMS开放数据上对抗学到的异常检测:重新发现顶级夸克

Adversarially Learned Anomaly Detection on CMS Open Data: re-discovering the top quark

论文作者

Knapp, Oliver, Dissertori, Guenther, Cerri, Olmo, Nguyen, Thong Q., Vlimant, Jean-Roch, Pierini, Maurizio

论文摘要

我们在大型强生对撞机的质子 - 普罗顿碰撞中检测新物理过程的问题应用了对抗性学习的异常检测(ALAD)算法。基于ALAD的异常检测与变异自动编码器达到的性能相匹配,在某些情况下会有了很大的改善。在8个TEV CMS开放数据的4.4 fb-1上训练Alad算法,我们展示了数据驱动的异常检测和表征如何在现实生活中起作用,通过识别LHC的T-TBAR实验签名的主要特征来重新发现顶级夸克。

We apply an Adversarially Learned Anomaly Detection (ALAD) algorithm to the problem of detecting new physics processes in proton-proton collisions at the Large Hadron Collider. Anomaly detection based on ALAD matches performances reached by Variational Autoencoders, with a substantial improvement in some cases. Training the ALAD algorithm on 4.4 fb-1 of 8 TeV CMS Open Data, we show how a data-driven anomaly detection and characterization would work in real life, re-discovering the top quark by identifying the main features of the t-tbar experimental signature at the LHC.

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