Tests of a Particle Flow Algorithm with CALICE test beam data
Tests of a Particle Flow Algorithm with CALICE test beam data
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DOI：
10.1088/1748-0221/6/07/p07005
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发表时间：
2011-07-01
影响因子：
1.3
通讯作者：
Takeshita, T.
中科院分区：
文献类型：
--
作者：
Adloff, C.;Blaha, J.;Takeshita, T.
本文所呈现的研究利用在高粒度量热计中记录的数据，对粒子流算法（PFA）概念进行了首次实验测试。来自CALICE 2007测试束数据的成对重叠π介子簇射，由为在未来的轻子对撞机中实现PFA而开发的PandoraPFA程序进行重建。研究了在带电强子附近中性强子能量的恢复情况。探讨了两个重叠强子簇射对能量分辨率的影响。针对代表100 GeV喷注的10 GeV和30 GeV的π介子能量，推导了混淆误差对10 GeV中性强子和带电π介子之间距离的依赖性。在GEANT4框架内，针对各种强子簇射模型，将这些测试束数据结果与蒙特卡罗模拟进行了比较。模拟粒子和束流数据的结果吻合良好，从而为先前关于未来轻子对撞机中粒子流量热法能力的模拟研究提供了支持。
The studies presented in this paper provide a first experimental test of the Particle Flow Algorithm (PFA) concept using data recorded in high granularity calorimeters. Pairs of overlaid pion showers from CALICE 2007 test beam data are reconstructed by the PandoraPFA program developed to implement PFA for a future lepton collider. Recovery of a neutral hadron's energy in the vicinity of a charged hadron is studied. The impact of the two overlapping hadron showers on energy resolution is investigated. The dependence of the confusion error on the distance between a 10 GeV neutral hadron and a charged pion is derived for pion energies of 10 and 30 GeV which are representative of a 100 GeV jet. The comparison of these test beam data results with Monte Carlo simulation is done for various hadron shower models within the GEANT4 framework. The results for simulated particles and for beam data are in good agreement thereby providing support for previous simulation studies of the power of Particle Flow Calorimetry at a future lepton collider.