Measurement of the proton-air cross-section with the Pierre Auger Observatory
1 Karlsruhe Institute of Technology, Germany
2 Observatorio Pierre Auger, Malargüe, Argentina
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We present the procedure to measure the proton-air cross-section at a center-of-mass energy per nucleon of 57 TeV developed by the Pierre Auger Collaboration. The conversion from proton-air to inelastic proton-proton cross-section with an extended Glauber calculation is discussed. The systematic uncertainties of the analysis are summarized and the final result compared to accelerator data and model predictions.
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