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arXiv 2108.08341astro-ph.HE
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九次空气簇射实验中μ子测量的联合分析的更新

Update on the Combined Analysis of Muon Measurements from Nine Air Shower Experiments

Dennis Soldin

摘要:

在过去的二十年里,各种实验已经测量了大量空气簇射中的μ子密度,其数量级超过了初级能量的几个数量级。虽然一些实验观察到模拟和实验测量的空气簇射之间的μ子密度差异,但其他实验报告没有差异。我们将提出一个更新的荟萃分析的μ子测量从9个空气簇射实验,包括簇射能量之间的几个PeV和几十个EeV和μ子的阈值能量从几个100兆电子伏到约10 GeV。为了比较不同实验的测量结果,对它们的能量尺度进行了交叉校准,并使用基于空气簇射模拟的通用参考尺度对实验数据进行了比较。超过10 PeV,我们发现一个μ子过剩相对于所有强子相互作用模型,这是增加淋浴能量的模拟。对于EPOS-LHC和QGSJet-II.04,在不同的实验不确定性假设下,详细分析了斜率增加的显著性。

英文摘要:

Over the last two decades, various experiments have measured muon densities in extensive air showers over several orders of magnitude in primary energy. While some experiments observed differences in the muon densities between simulated and experimentally measured air showers, others reported no discrepancies. We will present an update of the meta-analysis of muon measurements from nine air shower experiments, covering shower energies between a few PeV and tens of EeV and muon threshold energies from a few 100 MeV to about 10 GeV. In order to compare measurements from different experiments, their energy scale was cross-calibrated and the experimental data has been compared using a universal reference scale based on air shower simulations. Above 10 PeV, we find a muon excess with respect to simulations for all hadronic interaction models, which is increasing with shower energy. For EPOS-LHC and QGSJet-II.04 the significance of the slope of the increase is analyzed in detail under different assumptions of the individual experimental uncertainties.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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