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arXiv 0906.4113hep-phastro-ph.HEhep-ex
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Cosmic ray事件generator Sibyll 2.1

Cosmic ray event generator Sibyll 2.1

Eun-Joo Ahn, Ralph Engel, Thomas K. Gaisser, Paolo Lipari, Todor Stanev

摘要:

宇宙线相互作用事件发生器Sibyll被广泛用于广泛的空气簇射模拟。我们详细描述了Sibyll 2.1的属性以及与原始版本1.7的差异。主要的结构改进是有可能有多个软相互作用,引入新的部分子密度函数,并改进处理衍射。Sibyll 2.1给出了更好的协议与固定的目标和对撞机的数据,特别是非弹性截面和二次粒子的多重性。文中还讨论了存在的不足和今后改进的建议。

英文摘要:

The cosmic ray interaction event generator Sibyll is widely used in extensive air shower simulations. We describe in detail the properties of Sibyll 2.1 and the differences with the original version 1.7. The major structural improvements are the possibility to have multiple soft interactions, introduction of new parton density functions, and an improved treatment of diffraction. Sibyll 2.1 gives better agreement with fixed target and collider data, especially for the inelastic cross sections and multiplicities of secondary particles. Shortcomings and suggestions for future improvements are also discussed.

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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