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arXiv 1912.03300hep-phastro-ph.HE
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强子相互作用模型Sibyll 2.3d和广泛的空气簇射

Hadronic interaction model Sibyll 2.3d and extensive air showers

Felix Riehn, Ralph Engel, Anatoli Fedynitch, Thomas K. Gaisser, Todor Stanev

摘要:

我们提出了一个新版本的强子相互作用事件发生器Sibyll。虽然保留了模型的核心思想,但新版本以新的方式处理重子对和领先粒子的产生。此外,还包括粲强子的产生。模型的更新是由LHC前向探测器对总截面和非弹性截面的高精度测量提供的,这些测量将外推限制在超高能量。粒子光谱和多重性的最小偏差测量支持碎裂参数的调整。本文展示了这些变化对空气簇射观测值的影响,如$X_{\rm max}$和$N_μ$,与其他当代宇宙线相互作用模型进行比较。

英文摘要:

We present a new version of the hadron interaction event generator Sibyll. While the core ideas of the model have been preserved, the new version handles the production of baryon pairs and leading particles in a new way. In addition, production of charmed hadrons is included. Updates to the model are informed by high-precision measurements of the total and inelastic cross sections with the forward detectors at the LHC that constrain the extrapolation to ultra-high energy. Minimum-bias measurements of particle spectra and multiplicities support the tuning of fragmentation parameters. This paper demonstrates the impact of these changes on air shower observables such as $X_{\rm max}$ and $N_μ$, drawing comparisons with other contemporary cosmic ray interaction models.

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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