Comparison Of The Production Of Charged Hadrons At Large Transverse-Momentum In Pi-P And Pp Collisions

Measurements of the production cross sections at large values of transverse momentum (P/sub T/) for ..pi../sup + -/, K/sup + -/, p, and p-bar in 200- and 300-GeV/c ..pi../sup -/p collisions are presented. The dependences of the cross section on P/sub T/, the transverse scaling variable x/sub T/ = 2P/sub T//..sqrt..s, and the production angle are discussed. The cross sections are compared with those from pp collisions and with theoretical predictions. While the ..pi../sup -/p and pp data are quite different, both agree qualitatively with hard-scattering calculations.