Media On the muon scale of air showers and its application to the AGASA data

On the muon scale of air showers and its application to the AGASA data

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  • uploaded June 25, 2021

Discussion timeslot (ZOOM-Meeting): 14. July 2021 - 18:00
ZOOM-Meeting URL: https://desy.zoom.us/j/92210078166
ZOOM-Meeting ID: 92210078166
ZOOM-Meeting Passcode: ICRC2021
Corresponding Session: https://icrc2021-venue.desy.de/channel/03-Muon-Puzzle-and-EAS-modeling-CRI/110
Live-Stream URL: https://icrc2021-venue.desy.de/livestream/Discussion-03/4

Abstract:
'Recently, several experiments reported a muon deficit in air-shower simulations with respect to the data. This problem can be studied using an estimator that quantifies the relative muon content of the data with respect to those of proton and iron Monte-Carlo air-shower simulations. We analyze two estimators. The first one, based on the logarithm of the mean of the muon content, is built from experimental considerations. It is ideal for comparing results from different experiments as it is independent of the detector resolution. The second estimator is based on the mean of the logarithm of the muon content, which implies that it depends on shower-to-shower fluctuations. It is linked to the mean-logarithmic mass $langle ln A rangle$ through the Heitler-Matthews model. We study the properties of the estimators and their biases considering the knowns and unknowns of typical experiments. Furthermore, we study these effects in measurements of the muon density at $1000$ m from the shower axis obtained by the Akeno Giant Air Shower Array (AGASA). Finally, we report the estimates of the relative muon content of the AGASA data, which support a muon deficit in simulations. These estimates constitute valuable additional information of the muon content of air-showers at the highest energies.'

Authors: Flavia Gesualdi
Co-Authors: Hans Dembinski | Kenji Shinozaki | Alberto Daniel Supanitsky | Tanguy Pierog | Lorenzo Cazon | Dennis Soldin | Ruben Conceição | for the Working group on Hadronic Interactions and Shower Physics (WHISP)
Collaboration: WHISP

Indico-ID: 859
Proceeding URL: https://pos.sissa.it/395/473

Tags:
Categories: Cosmic Ray Indirect, Scientific Contributions
Presenter: Flavia Gesualdi

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