Experimental study of single-particle inclusive hadron scattering and associated multiplicities

An experiment using the Fermilab Single Arm Spectrometer (SAS) facility and an associated nonmagnetic vertex detector studied the reactions $a+p\to c+X$, where $a$ and $c$ were ${\pi }^{\pm }$, $K^{\pm }$, $p$, or $\overline{p}$. Extensive measurements were made at 100 and 175 GeV/c beam momenta with the outgoing hadrons detected in the SAS covering a kinematic range $0.12<x<\mathrm{}1.0\mathrm{}$ and $p_T<1.25\mathrm{}$ GeV/c. Additional data covering a more restricted range in $x$ were also gathered at 70 GeV/c incident momentum. In this high-statistics experiment, the identification of both the incoming and outgoing charged hadrons were made with a total of eight Čerenkov counters. New and extensive single-particle inclusive data for charged-particle production in low-$p_T$ hadronic fragmentation are presented. The average associated charged-particle multiplicity and pseudorapidity distributions are also given.