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arXiv · 1609.05764

No muon excess in extensive air showers at 100-500 PeV primary energy: EAS-MSU results

Yu. A. Fomin·N. N. Kalmykov·I. S. Karpikov·G. V. Kulikov·M. Yu. Kuznetsov·G. I. Rubtsov·V. P. Sulakov·S. V. Troitsky
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Abstract

Some discrepancies have been reported between observed and simulated muon content of extensive air showers: the number of observed muons exceeded the expectations in HiRes-MIA, Yakutsk and Pierre Auger Observatory data. Here, we analyze the data of the Moscow State University Extensive Air Shower (EAS-MSU) array on E_mu>~10 GeV muons in showers caused by ~(10^17-10^18) eV primary particles and demonstrate that they agree with simulations (QGSJET-II-04 hadronic interaction model) once the primary composition inferred from the surface-detector data is assumed.

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Yu. A. Fomin, N. N. Kalmykov, I. S. Karpikov, G. V. Kulikov, M. Yu. Kuznetsov, G. I. Rubtsov, V. P. Sulakov, S. V. Troitsky. 2017-04-18. No muon excess in extensive air showers at 100-500 PeV primary energy: EAS-MSU results. https://doi.org/10.1016/j.astropartphys.2017.04.001

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