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Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 80: Cosmic Rays IV

T 80.5: Talk

Thursday, March 18, 2021, 17:05–17:20, Te

EAS genealogy for muon productionTanguy Pierog1, •Maximilian Reininghaus1,2, and Ralf Ulrich11Institut für Astroteilchenphysik, KIT, Karlsruhe — 2Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires

Measurements of the muon content of extensive air showers at the highest energies show large discrepancies compared to simulations. This so-called muon puzzle is commonly attributed to a lack of understanding of the hadronic interactions in the shower development. Furthermore, measurements of the fluctuations of muon numbers suggest that the discrepancy is likely a cumulative effect of interactions of all energies in the cascade.

With the newly developed "history" extension of the air shower simulation code CORSIKA 8 we are able to relate interactions happening at any intermediate stage in the cascade to the final-state muons. With this technique we study "muon-number weighted" particle distributions of hadronic interactions in order to quantify the relevance of different phase space regions for muon production.

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