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arXiv 1812.09121astro-ph.HE
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探测超高能量质子-空气相互作用中高$x$的$π^0$谱

Probing the $π^0$ spectrum at high-$x$ in proton-Air interactions at ultra-high energies

Lorenzo Cazon, Ruben Conceição, Miguel Alexandre Martins, Felix Riehn

摘要:

在空气簇射中μ介子的平均数及其与簇射发展的关系在过去已被广泛研究。随着即将到来的探测器升级,UHECR观测站将能够探测μ子数量分布的更高时刻。在这里的μ子内容的波动的物理研究。除了证明的波动必须由第一相互作用,我们表明,低$N_μ$尾的μ子数量的簇射分布是由高$x_{\rm L}$区域的中性π介子的生产截面在第一相互作用。

英文摘要:

The average number of muons in air showers and its connection with shower development has been studied extensively in the past. With the upcoming detector upgrades, UHECR observatories will be able to probe higher moments of the distribution of the number of muons. Here a study of the physics of the fluctuations of the muon content is presented. In addition to proving that the fluctuations must be dominated by the first interactions, we show that low-$N_μ$ tail of the shower-to-shower distribution of the number of muons is determined by the high-$x_{\rm L}$ region of the production cross-section of neutral pions in the first interaction.

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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