VIOLATION OF FEYNMAN SCALING AND ENERGY-DEPENDENCE OF MULTIPLICITY FOR HIGH-ENERGY HADRON INTERACTIONS

We have analysed the momentum spectra of the secondary particles in p- p interactions predicted by different models, comparing them with acce lerator data from 19.7 GeV to 1.8 TeV (CMS). All models predicting asy mptotic behaviour of secondary spectra with Feynman scaling in the fra gmentation region lead to a rather slow increase of multiplicity in co ntradiction to the accelerator data. It is shown that the pure phenome nological model, which is based on the semi-inclusive spectra from ISR and FNAL collider experiments at 19.7 GeV, and extrapolated to higher energies by assuming violated Feynman scaling in the entire phase spa ce, describes the data well in the whole accelerator range. This model is also relevant for application in the study of cosmic rays at high energies.