Hadronic multiparticle production at ultrahigh energies and extensive air showers
Hadronic multiparticle production at ultrahigh energies and extensive air showers
复制标题
超高能量和广泛空气簇射下的强子多粒子产生
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
M. Unger
中科院分区：
文献类型：
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作者：
R. Ulrich;R. Engel;M. Unger
对能量最高的宇宙线粒子的性质的研究是基于对大范围空气簇射的测量。因此，大多数宇宙线性质只能从空气簇射数据的解释中获得，因此依赖于对超高能强子相互作用模型的预测。我们讨论了从加速器数据到空气簇射能量的模式外推的不同情景，并研究了它们对相应的空气簇射预报的影响。为了探索强子相互作用模型对不同外推的影响，我们开发了一个特别模型。该模型基于对空气簇射模拟过程中标准强子相互作用事件产生器输出的修正，使我们能够研究相互作用特征的变化对空气簇射发展的影响。在一个系统的研究中，我们展示了重要的空气簇射观测值的变化，并根据空气簇射的海特勒模型的预测对它们进行了讨论。结果发现，我们的特别修正的结果在很大程度上与基本强子相互作用模型的选择无关。
Studies of the nature of cosmic ray particles at the highest energies are based on the measurement of extensive air showers. Most cosmic ray properties can therefore be obtained only from the interpretation of air shower data and are thus dependent on predictions of hadronic interaction models at ultrahigh energies. We discuss different scenarios of model extrapolations from accelerator data to air shower energies and investigate their impact on the corresponding air shower predictions. To explore the effect of different extrapolations by hadronic interaction models we developed an ad hoc model. This model is based on the modification of the output of standard hadronic interaction event generators within the air shower simulation process and allows us to study the impact of changing interaction features on the air shower development. In a systematic study we demonstrate the resulting changes of important air shower observables and also discuss them in terms of the predictions of the Heitler model of air shower cascades. It is found that the results of our ad hoc modifications are, to a large extent, independent of the choice of the underlying hadronic interaction model.