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Improving the Composition of Ultra High Energy Cosmic Rays with Ground Detector Data

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arxiv 2304.11197 v2 pith:Y76R3KSV submitted 2023-04-21 astro-ph.HE hep-ph

classification astro-ph.HEhep-ph
keywords augmentedbuildingcompositioncorrelationcosmicdataenergymapping
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We show that the maximum shower depth distributions of Ultra-High Energy Cosmic Rays (UHECRs), as measured by fluorescence telescopes, can be augmented by building a mapping to observables collected by surface detectors. The resulting statistical improvement of such augmented dataset depends in a universal way on the strength of the correlation exhibited by the mapping. Building upon the publicly available data on "golden hybrid" events from the Pierre Auger Observatory we project possible improvements in the inferred composition of UHECRs for a range of possible mappings with varying correlation strengths.

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  1. Ultra High Energy Cosmic Rays versus Models of High Energy Hadronic Interactions

    astro-ph.HE 2024-11 conditional novelty 5.0 of 10

    Using higher moments of air-shower depth distributions, the authors project that the full Pierre Auger dataset could reject the EPOS and Sibyll hadronic models at high confidence.

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