Observable effects of the X-process muon source

The zenithal enhancements exhibited by calculated integral muon intensities at large zenith angles and high energies are examined for variations due to energy dependence of both the K/π ratio in the conventional meson source of muons and the percentage of X-process at production. These enhancements are compared with the Utah underground measurements over a wide range of depth and zenith angle. The indicated energy dependence of the percentage of X-process at production is determined, and the implications of the resulting spectra for experimental investigations are discussed.