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Measurement of the proton-air cross-section at sqrt{s}=57 TeV with the Pierre Auger Observatory

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arxiv 1208.1520 v2 pith:PNU6F747 submitted 2012-08-07 hep-ex astro-ph.HE

Measurement of the proton-air cross-section at sqrt{s}=57 TeV with the Pierre Auger Observatory

classification hep-ex astro-ph.HE
keywords cross-sectionproton-airaugerdistributionmaximameasurementobservatorypierre
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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. Analysing the tail of the distribution of the shower maxima, a proton-air cross-section of $[505\pm22(stat)^{+28}_{-36}(sys)]$ mb is found.

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  1. Measurement of charged-particle production in $\sqrt{s_\text{NN}}=9.62$ TeV proton-oxygen collisions as a probe of cosmic-ray air showers with the ATLAS detector

    hep-ex 2026-04 accept novelty 7.0

    ATLAS measured charged-particle production in 9.62 TeV p-O collisions, yielding a fiducial pO cross section of 396 mb and extrapolated p-air inelastic cross section of 406 mb, with distributions an order of magnitude ...