Abstract
We report a measurement of the proton-air cross section for particle production at the center-of-mass energy per nucleon of 57 TeV. This is derived from the distribution of the depths of shower maxima observed with the Pierre Auger Observatory: systematic uncertainties are studied in detail. Analyzing the tail of the distribution of the shower maxima, a proton-air cross section of [505±22(stat)-36+28(syst)]mb is found. © 2012 American Physical Society.
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CITATION STYLE
Abreu, P., Aglietta, M., Ahn, E. J., Albuquerque, I. F. M., Allard, D., Allekotte, I., … Ziolkowski, M. (2012). Measurement of the proton-air cross section at √s=57TeV with the Pierre Auger observatory. Physical Review Letters, 109(6). https://doi.org/10.1103/PhysRevLett.109.062002
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