Jet energy scale and resolution measured in proton-proton collisions at s=13 TeV with the ATLAS detector
Jet energy scale and resolution measured in proton-proton collisions at s=13 TeV with the ATLAS detector
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DOI：
10.1140/epjc/s10052-021-09402-3
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发表时间：
2021-08-01
影响因子：
4.4
通讯作者：
Zwalinski, L.
中科院分区：
文献类型：
--
作者：
Aad, G.;Abbott, B.;Zwalinski, L.
喷流的能量尺度和分辨率测量与其相关的不确定性的报告使用36-81 fb-1的质子-质子碰撞数据的质量中心的能量为s=13 TeV的ATLAS探测器收集的大型强子对撞机。射流重建使用两种不同的输入类型：拓扑簇形成的能量沉积在量热计细胞，以及带电粒子轨道与这些拓扑簇的算法组合，被称为ATLAS粒子流重建方法。半径参数R=0.4的反KT喷流算法是用于两种喷流类型的主要喷流定义。这一结果提出了新的喷流能量尺度和分辨率的测量，在后期LHC运行2的高堆积条件下，以及在ATLAS中的粒子流喷流的全面校准。最初使用一系列基于模拟的校正来校准射流。接下来，采用几种原位技术来校正数据和模拟之间的差异，并测量射流的分辨率。中心喷流能量尺度的系统不确定性（|eta|
Jet energy scale and resolution measurements with their associated uncertainties are reported for jets using 36-81 fb-1 of proton-proton collision data with a centre-of-mass energy of s=13 TeV collected by the ATLAS detector at the LHC. Jets are reconstructed using two different input types: topo-clusters formed from energy deposits in calorimeter cells, as well as an algorithmic combination of charged-particle tracks with those topo-clusters, referred to as the ATLAS particle-flow reconstruction method. The anti-kt jet algorithm with radius parameter R=0.4 is the primary jet definition used for both jet types. This result presents new jet energy scale and resolution measurements in the high pile-up conditions of late LHC Run 2 as well as a full calibration of particle-flow jets in ATLAS. Jets are initially calibrated using a sequence of simulation-based corrections. Next, several in situ techniques are employed to correct for differences between data and simulation and to measure the resolution of jets. The systematic uncertainties in the jet energy scale for central jets (|eta|