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arXiv · 0706.2086

On the relation between the proton-air cross section and fluctuations of the shower longitudinal profile

R. Ulrich·J. Blümer·R. Engel·F. Schüssler·M. Unger
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Abstract

The current status and prospects of deducing the proton-air cross section from fluorescence telescope measurements of extensive air showers are discussed. As it is not possible to observe the point of first interaction, $X_ {\rm 1}$, directly, other observables closely linked to $X_{\rm 1}$ must be inferred from the measured longitudinal profiles. This introduces a dependence on the models used to describe the shower development. Systematic uncertainties arising from this model dependence, from the reconstruction method itself and from a possible non-proton contamination of the selected shower sample are discussed.

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R. Ulrich, J. Blümer, R. Engel, F. Schüssler, M. Unger. 2007-06-14. On the relation between the proton-air cross section and fluctuations of the shower longitudinal profile. https://arxiv.org/abs/0706.2086

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