RATIOS OF SINGLE HADRONS PRODUCED AT HIGH TRANSVERSE MOMENTUM IN 400 GEV/C PROTON-NUCLEON COLLISIONS

We have measured ratios of single hadrons produced at high p(,T) in 400 GeV/c proton-hydrogen and proton-deuterium collisions. A Ring Imaging Cherenkov detector was employed to identify (pi)('(+OR-)), K('(+OR-)), p and p in the momentum range 80-150 GeV/c. Our acceptance was defined by the region 5.0 < p(,T) < 8.0 GeV/c and 65 < (theta)* < 95(DEGREES). We compare our measurements of the ratios K('+)/(pi)('+), p/(pi)('+), K('-)/(pi)('-), p/(pi)('-), and (pi)('+)/(pi)('-) to the results of the Chicago-Princeton experiment and to the Lund high p(,T) physics Monte Carlo.