Muon Charge-Ratio Measurement and Comparison with Prediction from Hadronic Scaling

Abstract

The cosmic-ray muon charge ratio has been measured for muon momenta 0.7-4.5 TeV/c. It has also been calculated for a constant primary composition by applying scaling to nuclear-target data. The measurements, together with those at lower energies, are in good agreement with our predictions for primary collision energies up to 40 TeV.