Simulated and Reconstructed Jets with CMS and DELPHES

We provide data used for fast simulation studies. The subject of the study is simulated CMS single light-jet data. The data is split by the parton pT range in slices 470-600 GeV, 600-800 GeV, 800-1000 GeV, 1000-1400 GeV, 1400-1800 GeV, and > 1800 GeV. The file names are indicated by the lower bound. Each file contains the branch with stable input particles before detector simulation and the branch with the reconstructed particle flow candidates jet. A 1 GeV cut is applied to the particle flow candidates. Our model was trained on two slices covering the 800 - 1400 GeV region and evaluated on all slices. Each train, validation, and test file contains 1.7 M, 240 k, and 480 k jets. For comparison, we provide the detector simulation obtained with DELPHES 3.5 for the same set of truth-level events in each jet energy slice. We used the CMS card with pileup and an average of 6.35 pileup vertices per event. The particle flow objects are clustered into anti-kT R-0.5 jets and only constituents of the leading jet in each event are kept. Each file contains 250k jets.

本数据集面向快速模拟研究场景。本次研究的对象为紧凑型缪子谱仪（Compact Muon Solenoid，CMS）模拟单轻喷注数据。数据集按照部分子横向动量（parton pT）区间划分为7个子集，区间分别为470-600 GeV、600-800 GeV、800-1000 GeV、1000-1400 GeV、1400-1800 GeV以及>1800 GeV。文件名以对应区间的下限值命名。每个数据文件包含探测器模拟前的稳定输入粒子分支，以及重建后的粒子流候选喷注分支，并对粒子流候选体施加1 GeV的截断筛选。本模型在覆盖800-1400 GeV区间的两个子数据集中完成训练，并在全部子集上进行评估。每个训练、验证与测试文件分别包含170万、24万以及48万喷注事件。为便于对比验证，我们为每个喷注能量区间内的全部真实层级事件提供了基于DELPHES 3.5生成的探测器模拟结果。本次模拟采用搭载叠加事件设置的CMS配置文件，每个事件平均包含6.35个叠加顶点。粒子流对象被聚类为anti-kT R=0.5喷注，且仅保留每个事件中领头喷注的组成部分。每个DELPHES模拟文件包含25万喷注事件。