Produced particle fluxes at very high energies

A conjecture, motivated by dual-resonance models and scaling laws, is presented which simply relates the production rates for various particles in the central region, at limiting high energies. At zero c.m. longitudinal momentum (x=0) and zero transverse momentum, the authors predict the kaon/pion ratio to be of order 0.02. An operational definition is proposed for the term 'central region'; it is used subsequently to determine the energy region of applicability of the predictions. The results given here may be useful for estimating secondary particle yields at the CERN Intersecting Storage Rings and the National Accelerator Laboratory. (17 refs).