The Meson Spectrum Near Sea-Level

Abstract

L. Janossy and J. C. Wilson determined, some time ago¹, from a comparison of theoretical and experimental spectra at sea-level the exponent γ in the production spectrum of mesons dN = const. p ^γ dp ; they find a value γ = 3.3. As this value differs appreciably from the ordinarily accepted one, we have thought it worth while to check the above result by a more accurate method, taking account of the variable energy-loss of mesons through the atmosphere.