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The 〈?ln A?〉 study with the Muon tracking detector in the KASCADE-Grande experiment – comparison of hadronic interaction models

机译:在KASCADE-Grande实验中使用Muon跟踪检测器进行的“?ln A?”研究–强子相互作用模型的比较

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With the KASCADE-Grande Muon Tracking Detector it was possible to measure with high accuracy directions of EAS muons with energy above 0.8?GeV and up to 700?m distance from the shower centre. Reconstructed muon tracks allow investigation of muon pseudorapidity (η) distributions. These distributions are nearly identical to the pseudorapidity distributions of their parent mesons produced in hadronic interactions. Comparison of the η distributions from measured and simulated showers can be used to test the quality of the high energy hadronic interaction models. The pseudorapidity distributions reflect the longitudinal development of EAS and, as such, are sensitive to the mass of the cosmic ray primary particles. With various parameters of the η distribution, obtained from the Muon Tracking Detector data, it is possible to calculate the average logarithm of mass of the primary cosmic ray particles. The results of the 〈 ln A 〉 analysis in the primary energy range 1016?eV–1017?eV with the 1st quartile and the mean value of the distributions will be presented for the QGSJet-II-2, QGSJet-II-4, EPOS 1.99 and EPOS LHC models in combination with the FLUKA model.
机译:使用KASCADE-Grande Muon跟踪检测器,可以以0.8?GeV以上的能量和距淋浴中心最远700?m的距离高精度地测量EASμs方向。重构的μ子轨迹可以研究μ子伪快速性(η)分布。这些分布几乎与强子相互作用中产生的其父介子的假快速分布相同。来自实测和模拟阵雨的η分布比较可用于测试高能强子相互作用模型的质量。伪快速分布反映了EAS的纵向发展,因此对宇宙射线一次粒子的质量敏感。使用从Muon跟踪检测器数据获得的η分布的各种参数,可以计算一次宇宙射线粒子质量的平均对数。将给出QGSJet-II-2,QGSJet-II-4,EPOS在第一个四分位数的一次能量范围1016?eV–1017?eV中的ln A分析结果和分布平均值。 1.99和EPOS LHC模型与FLUKA模型结合使用。

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