No muon excess in extensive air showers at 100-500 PeV primary energy: EAS-MSU results
arXiv:1609.05764 · doi:10.1016/j.astropartphys.2017.04.001
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.
10 pages, 6 figures, elsart.sty. V2: extended discussion of systematic errors, numerous clarifications (results unchanged). V3: minor changes, version accepted by Astroparticle Physics