Interpretation of the Meson Spectrum Near Sea-Level

Abstract

THE spectrum of the mesons near their place of production can be deduced from the spectrum observed near sea-level. The probability of a meson reaching sea-level with a final momentum p is, according to Euler and Heisenberg¹, given as follows: All quantities have been expressed in terms of momenta, the symbols having the following meaning: q = 2,000 Mev./c., the momentum loss on traversing the atmosphere. p₁ = 200 Mev./c, the momentum loss on traversing the atmosphere lying above the meson-producing layer. , with H the height of the homogeneous atmosphere, ï the average life of the meson, μ mass of the meson.