Breakdown of scaling in high-energy accelerator and cosmic-ray interactions

Abstract
There is still argument about the extent to which the simple description of high energy nucleon-nucleon interactions first put forward by Feynman (1969) (Feynman 'scaling') is valid above about 1012 eV. The authors examine the latest data from the CERN pp experiments, which relate to equivalent laboratory energies up to approximately=4*1014 eV ( square root s=900 GeV), and cosmic-ray phenomena at similar energies, and coincide that the evidence for a breakdown of scaling is still strong.
Keywords