Ratios of single hadrons produced at high transverse momentum in 400 GeV/c proton-nucleon collisions

The authors have measured ratios of single hadrons produced at high p/sub T/ in 400 GeV/c proton-hydrogen and proton-deuterium collisions. A Ring Imaging Cherenkov detector was employed to identify π/sup +/-/, K/sup +/-/, p and anti-p in the momentum range 80-150 GeV/c. Our acceptance was defined by the region 5.0 < p/sub T/ < 8.0 GeV/c and 65 < theta/sup */ < 950. The authors compare the measurements of the ratios K+/π+, p/π+, K-/π-, anti-p/π-, and π+/π- to the results of the Chicago-Princeton experiment and to the Lund high p/sub T/ physics Monte Carlo