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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

Pierre Auger Collaboration This is my paper · ORCID
classification hep-exastro-ph.HE
keywords cross-sectionproton-airaugerdistributionmaximameasurementobservatorypierre
verification ladder T0 review T1 audit T2 compute T3 formal

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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. 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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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Astrophysical Neutrino Sources as Colliders

    hep-ph 2026-07 conditional novelty 7.0 of 10

    Neutrino point-source observations (IceCube, KM3NeT) can bound inelastic pp and pγ cross sections from √s ≈ 1 GeV to ~10^5 GeV, extending beyond LHC/HERA and sometimes below unitarity limits.

  2. Modified hadronic interactions in 3-dimensional simulations

    astro-ph.HE 2026-01 conditional novelty 6.0 of 10

    A 3D air-shower simulation framework with ad-hoc modified hadronic interactions is validated against 1D CONEX and full CORSIKA, with important 3D lateral effects demonstrated.

  3. A New Method for Measuring the Pion-Air Cross Section at Multi-TeV Energies Using Muon Bundle Properties in Deep Underground Detectors

    astro-ph.HE 2025-07 conditional novelty 5.0 of 10

    Simulations show that underground muon bundle counts could constrain the inelastic pion-air cross section to roughly 10-15% near 1-2 TeV.

  4. Modified Hadronic Interactions and the future of UHECR observations

    astro-ph.HE 2025-02 conditional novelty 4.0 of 10

    A systematic library of modified hadronic simulations shows that matching Auger muon and Xmax data is possible only with a combination of cross-section, multiplicity, and elasticity changes that conflicts with other m...

  5. Probing the high energy spectrum of neutral pions in ultra-high energy proton-Air interactions

    hep-ph 2019-08 conditional novelty 4.0 of 10

    The low-muon-number tail slope in simulated air showers is presented as a direct observable for the high-energy neutral-pion spectrum of the first proton-air interaction.

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