Abstract
A summary has been made of all the available data on the charge ratio of cosmic-ray muons at energies above 50 GeV. The data have been combined into zenith-angle bins and average values have been plotted for mean angles of approximately 0°, 60° and 80°. Following the method outlined by MacKeown and Wolfendale an approximate analysis has been made to determine limits on the ratio of kaons to pions (K/π) and K+/K− for energetic secondaries produced in the interactions of primary particles in the energy range (500÷10000) GeV. It is shown that there is no evidence for a dramatic change in these quantities over the next decade of energy above that available at the Intersecting Storage Ring experiment at CERN.
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